--- /dev/null
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+
+/*-************************************
+* Compiler specific
+**************************************/
+#ifdef _MSC_VER /* Visual Studio */
+# define _CRT_SECURE_NO_WARNINGS /* fgets */
+# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
+# pragma warning(disable : 4204) /* disable: C4204: non-constant aggregate initializer */
+#endif
+
+
+/*-************************************
+* Includes
+**************************************/
+#include <stdlib.h> /* free */
+#include <stdio.h> /* fgets, sscanf */
+#include <string.h> /* strcmp */
+#include <time.h> /* time(), time_t */
+#undef NDEBUG /* always enable assert() */
+#include <assert.h>
+#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressContinue, ZSTD_compressBlock */
+#include "debug.h" /* DEBUG_STATIC_ASSERT */
+#include "fse.h"
+#define ZSTD_DISABLE_DEPRECATE_WARNINGS /* No deprecation warnings, we still test some deprecated functions */
+#include "zstd.h" /* ZSTD_VERSION_STRING */
+#include "zstd_errors.h" /* ZSTD_getErrorCode */
+#define ZDICT_STATIC_LINKING_ONLY
+#include "zdict.h" /* ZDICT_trainFromBuffer */
+#include "mem.h"
+#include "datagen.h" /* RDG_genBuffer */
+#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */
+#include "xxhash.h" /* XXH64 */
+#include "util.h"
+#include "timefn.h" /* SEC_TO_MICRO, UTIL_time_t, UTIL_TIME_INITIALIZER, UTIL_clockSpanMicro, UTIL_getTime */
+/* must be included after util.h, due to ERROR macro redefinition issue on Visual Studio */
+#include "zstd_internal.h" /* ZSTD_WORKSPACETOOLARGE_MAXDURATION, ZSTD_WORKSPACETOOLARGE_FACTOR, KB, MB */
+#include "threading.h" /* ZSTD_pthread_create, ZSTD_pthread_join */
+
+
+/*-************************************
+* Constants
+**************************************/
+#define GB *(1U<<30)
+
+static const int FUZ_compressibility_default = 50;
+static const int nbTestsDefault = 30000;
+
+
+/*-************************************
+* Display Macros
+**************************************/
+#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
+#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
+static U32 g_displayLevel = 2;
+
+static const U64 g_refreshRate = SEC_TO_MICRO / 6;
+static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
+
+#define DISPLAYUPDATE(l, ...) \
+ if (g_displayLevel>=l) { \
+ if ((UTIL_clockSpanMicro(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
+ { g_displayClock = UTIL_getTime(); DISPLAY(__VA_ARGS__); \
+ if (g_displayLevel>=4) fflush(stderr); } \
+ }
+
+
+/*-*******************************************************
+* Compile time test
+*********************************************************/
+#undef MIN
+#undef MAX
+/* Declaring the function, to avoid -Wmissing-prototype */
+void FUZ_bug976(void);
+void FUZ_bug976(void)
+{ /* these constants shall not depend on MIN() macro */
+ DEBUG_STATIC_ASSERT(ZSTD_HASHLOG_MAX < 31);
+ DEBUG_STATIC_ASSERT(ZSTD_CHAINLOG_MAX < 31);
+}
+
+
+/*-*******************************************************
+* Internal functions
+*********************************************************/
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#define MAX(a,b) ((a)>(b)?(a):(b))
+
+#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
+static U32 FUZ_rand(U32* src)
+{
+ static const U32 prime1 = 2654435761U;
+ static const U32 prime2 = 2246822519U;
+ U32 rand32 = *src;
+ rand32 *= prime1;
+ rand32 += prime2;
+ rand32 = FUZ_rotl32(rand32, 13);
+ *src = rand32;
+ return rand32 >> 5;
+}
+
+static U32 FUZ_highbit32(U32 v32)
+{
+ unsigned nbBits = 0;
+ if (v32==0) return 0;
+ while (v32) v32 >>= 1, nbBits++;
+ return nbBits;
+}
+
+
+/*=============================================
+* Test macros
+=============================================*/
+#define CHECK(fn) { if(!(fn)) { DISPLAYLEVEL(1, "Error : test (%s) failed \n", #fn); exit(1); } }
+
+#define CHECK_Z(f) { \
+ size_t const err = f; \
+ if (ZSTD_isError(err)) { \
+ DISPLAY("Error => %s : %s ", \
+ #f, ZSTD_getErrorName(err)); \
+ exit(1); \
+} }
+
+#define CHECK_VAR(var, fn) var = fn; if (ZSTD_isError(var)) { DISPLAYLEVEL(1, "%s : fails : %s \n", #fn, ZSTD_getErrorName(var)); exit(1); }
+#define CHECK_NEWV(var, fn) size_t const CHECK_VAR(var, fn)
+#define CHECKPLUS(var, fn, more) { CHECK_NEWV(var, fn); more; }
+
+#define CHECK_OP(op, lhs, rhs) { \
+ if (!((lhs) op (rhs))) { \
+ DISPLAY("Error L%u => FAILED %s %s %s ", __LINE__, #lhs, #op, #rhs); \
+ exit(1); \
+ } \
+}
+#define CHECK_EQ(lhs, rhs) CHECK_OP(==, lhs, rhs)
+#define CHECK_LT(lhs, rhs) CHECK_OP(<, lhs, rhs)
+
+
+/*=============================================
+* Memory Tests
+=============================================*/
+#if defined(__APPLE__) && defined(__MACH__)
+
+#include <malloc/malloc.h> /* malloc_size */
+
+typedef struct {
+ unsigned long long totalMalloc;
+ size_t currentMalloc;
+ size_t peakMalloc;
+ unsigned nbMalloc;
+ unsigned nbFree;
+} mallocCounter_t;
+
+static const mallocCounter_t INIT_MALLOC_COUNTER = { 0, 0, 0, 0, 0 };
+
+static void* FUZ_mallocDebug(void* counter, size_t size)
+{
+ mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
+ void* const ptr = malloc(size);
+ if (ptr==NULL) return NULL;
+ DISPLAYLEVEL(4, "allocating %u KB => effectively %u KB \n",
+ (unsigned)(size >> 10), (unsigned)(malloc_size(ptr) >> 10)); /* OS-X specific */
+ mcPtr->totalMalloc += size;
+ mcPtr->currentMalloc += size;
+ if (mcPtr->currentMalloc > mcPtr->peakMalloc)
+ mcPtr->peakMalloc = mcPtr->currentMalloc;
+ mcPtr->nbMalloc += 1;
+ return ptr;
+}
+
+static void FUZ_freeDebug(void* counter, void* address)
+{
+ mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
+ DISPLAYLEVEL(4, "freeing %u KB \n", (unsigned)(malloc_size(address) >> 10));
+ mcPtr->nbFree += 1;
+ mcPtr->currentMalloc -= malloc_size(address); /* OS-X specific */
+ free(address);
+}
+
+static void FUZ_displayMallocStats(mallocCounter_t count)
+{
+ DISPLAYLEVEL(3, "peak:%6u KB, nbMallocs:%2u, total:%6u KB \n",
+ (unsigned)(count.peakMalloc >> 10),
+ count.nbMalloc,
+ (unsigned)(count.totalMalloc >> 10));
+}
+
+static int FUZ_mallocTests_internal(unsigned seed, double compressibility, unsigned part,
+ void* inBuffer, size_t inSize, void* outBuffer, size_t outSize)
+{
+ /* test only played in verbose mode, as they are long */
+ if (g_displayLevel<3) return 0;
+
+ /* Create compressible noise */
+ if (!inBuffer || !outBuffer) {
+ DISPLAY("Not enough memory, aborting\n");
+ exit(1);
+ }
+ RDG_genBuffer(inBuffer, inSize, compressibility, 0. /*auto*/, seed);
+
+ /* simple compression tests */
+ if (part <= 1)
+ { int compressionLevel;
+ for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
+ mallocCounter_t malcount = INIT_MALLOC_COUNTER;
+ ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
+ CHECK_Z( ZSTD_compressCCtx(cctx, outBuffer, outSize, inBuffer, inSize, compressionLevel) );
+ ZSTD_freeCCtx(cctx);
+ DISPLAYLEVEL(3, "compressCCtx level %i : ", compressionLevel);
+ FUZ_displayMallocStats(malcount);
+ } }
+
+ /* streaming compression tests */
+ if (part <= 2)
+ { int compressionLevel;
+ for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
+ mallocCounter_t malcount = INIT_MALLOC_COUNTER;
+ ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
+ ZSTD_CCtx* const cstream = ZSTD_createCStream_advanced(cMem);
+ ZSTD_outBuffer out = { outBuffer, outSize, 0 };
+ ZSTD_inBuffer in = { inBuffer, inSize, 0 };
+ CHECK_Z( ZSTD_initCStream(cstream, compressionLevel) );
+ CHECK_Z( ZSTD_compressStream(cstream, &out, &in) );
+ CHECK_Z( ZSTD_endStream(cstream, &out) );
+ ZSTD_freeCStream(cstream);
+ DISPLAYLEVEL(3, "compressStream level %i : ", compressionLevel);
+ FUZ_displayMallocStats(malcount);
+ } }
+
+ /* advanced MT API test */
+ if (part <= 3)
+ { int nbThreads;
+ for (nbThreads=1; nbThreads<=4; nbThreads++) {
+ int compressionLevel;
+ for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
+ mallocCounter_t malcount = INIT_MALLOC_COUNTER;
+ ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) );
+ CHECK_Z( ZSTD_compress2(cctx, outBuffer, outSize, inBuffer, inSize) );
+ ZSTD_freeCCtx(cctx);
+ DISPLAYLEVEL(3, "compress_generic,-T%i,end level %i : ",
+ nbThreads, compressionLevel);
+ FUZ_displayMallocStats(malcount);
+ } } }
+
+ /* advanced MT streaming API test */
+ if (part <= 4)
+ { int nbThreads;
+ for (nbThreads=1; nbThreads<=4; nbThreads++) {
+ int compressionLevel;
+ for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
+ mallocCounter_t malcount = INIT_MALLOC_COUNTER;
+ ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
+ ZSTD_outBuffer out = { outBuffer, outSize, 0 };
+ ZSTD_inBuffer in = { inBuffer, inSize, 0 };
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) );
+ CHECK_Z( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue) );
+ while ( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) ) {}
+ ZSTD_freeCCtx(cctx);
+ DISPLAYLEVEL(3, "compress_generic,-T%i,continue level %i : ",
+ nbThreads, compressionLevel);
+ FUZ_displayMallocStats(malcount);
+ } } }
+
+ return 0;
+}
+
+static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
+{
+ size_t const inSize = 64 MB + 16 MB + 4 MB + 1 MB + 256 KB + 64 KB; /* 85.3 MB */
+ size_t const outSize = ZSTD_compressBound(inSize);
+ void* const inBuffer = malloc(inSize);
+ void* const outBuffer = malloc(outSize);
+ int result;
+
+ /* Create compressible noise */
+ if (!inBuffer || !outBuffer) {
+ DISPLAY("Not enough memory, aborting \n");
+ exit(1);
+ }
+
+ result = FUZ_mallocTests_internal(seed, compressibility, part,
+ inBuffer, inSize, outBuffer, outSize);
+
+ free(inBuffer);
+ free(outBuffer);
+ return result;
+}
+
+#else
+
+static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
+{
+ (void)seed; (void)compressibility; (void)part;
+ return 0;
+}
+
+#endif
+
+static void FUZ_decodeSequences(BYTE* dst, ZSTD_Sequence* seqs, size_t seqsSize,
+ BYTE* src, size_t size, ZSTD_sequenceFormat_e format)
+{
+ size_t i;
+ size_t j;
+ for(i = 0; i < seqsSize; ++i) {
+ assert(dst + seqs[i].litLength + seqs[i].matchLength <= dst + size);
+ assert(src + seqs[i].litLength + seqs[i].matchLength <= src + size);
+ if (format == ZSTD_sf_noBlockDelimiters) {
+ assert(seqs[i].matchLength != 0 || seqs[i].offset != 0);
+ }
+
+ memcpy(dst, src, seqs[i].litLength);
+ dst += seqs[i].litLength;
+ src += seqs[i].litLength;
+ size -= seqs[i].litLength;
+
+ if (seqs[i].offset != 0) {
+ for (j = 0; j < seqs[i].matchLength; ++j)
+ dst[j] = dst[j - seqs[i].offset];
+ dst += seqs[i].matchLength;
+ src += seqs[i].matchLength;
+ size -= seqs[i].matchLength;
+ }
+ }
+ if (format == ZSTD_sf_noBlockDelimiters) {
+ memcpy(dst, src, size);
+ }
+}
+
+#ifdef ZSTD_MULTITHREAD
+
+typedef struct {
+ ZSTD_CCtx* cctx;
+ ZSTD_threadPool* pool;
+ void* CNBuffer;
+ size_t CNBuffSize;
+ void* compressedBuffer;
+ size_t compressedBufferSize;
+ void* decodedBuffer;
+ int err;
+} threadPoolTests_compressionJob_payload;
+
+static void* threadPoolTests_compressionJob(void* payload) {
+ threadPoolTests_compressionJob_payload* args = (threadPoolTests_compressionJob_payload*)payload;
+ size_t cSize;
+ if (ZSTD_isError(ZSTD_CCtx_refThreadPool(args->cctx, args->pool))) args->err = 1;
+ cSize = ZSTD_compress2(args->cctx, args->compressedBuffer, args->compressedBufferSize, args->CNBuffer, args->CNBuffSize);
+ if (ZSTD_isError(cSize)) args->err = 1;
+ if (ZSTD_isError(ZSTD_decompress(args->decodedBuffer, args->CNBuffSize, args->compressedBuffer, cSize))) args->err = 1;
+ return payload;
+}
+
+static int threadPoolTests(void) {
+ int testResult = 0;
+ size_t err;
+
+ size_t const CNBuffSize = 5 MB;
+ void* const CNBuffer = malloc(CNBuffSize);
+ size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize);
+ void* const compressedBuffer = malloc(compressedBufferSize);
+ void* const decodedBuffer = malloc(CNBuffSize);
+
+ size_t const kPoolNumThreads = 8;
+
+ RDG_genBuffer(CNBuffer, CNBuffSize, 0.5, 0.5, 0);
+
+ DISPLAYLEVEL(3, "thread pool test : threadPool re-use roundtrips: ");
+ {
+ ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ ZSTD_threadPool* pool = ZSTD_createThreadPool(kPoolNumThreads);
+
+ size_t nbThreads = 1;
+ for (; nbThreads <= kPoolNumThreads; ++nbThreads) {
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, (int)nbThreads);
+ err = ZSTD_CCtx_refThreadPool(cctx, pool);
+ if (ZSTD_isError(err)) {
+ DISPLAYLEVEL(3, "refThreadPool error!\n");
+ ZSTD_freeCCtx(cctx);
+ goto _output_error;
+ }
+ err = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ if (ZSTD_isError(err)) {
+ DISPLAYLEVEL(3, "Compression error!\n");
+ ZSTD_freeCCtx(cctx);
+ goto _output_error;
+ }
+ err = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, err);
+ if (ZSTD_isError(err)) {
+ DISPLAYLEVEL(3, "Decompression error!\n");
+ ZSTD_freeCCtx(cctx);
+ goto _output_error;
+ }
+ }
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeThreadPool(pool);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "thread pool test : threadPool simultaneous usage: ");
+ {
+ void* const decodedBuffer2 = malloc(CNBuffSize);
+ void* const compressedBuffer2 = malloc(compressedBufferSize);
+ ZSTD_threadPool* pool = ZSTD_createThreadPool(kPoolNumThreads);
+ ZSTD_CCtx* cctx1 = ZSTD_createCCtx();
+ ZSTD_CCtx* cctx2 = ZSTD_createCCtx();
+
+ ZSTD_pthread_t t1;
+ ZSTD_pthread_t t2;
+ threadPoolTests_compressionJob_payload p1 = {cctx1, pool, CNBuffer, CNBuffSize,
+ compressedBuffer, compressedBufferSize, decodedBuffer, 0 /* err */};
+ threadPoolTests_compressionJob_payload p2 = {cctx2, pool, CNBuffer, CNBuffSize,
+ compressedBuffer2, compressedBufferSize, decodedBuffer2, 0 /* err */};
+
+ ZSTD_CCtx_setParameter(cctx1, ZSTD_c_nbWorkers, 2);
+ ZSTD_CCtx_setParameter(cctx2, ZSTD_c_nbWorkers, 2);
+ ZSTD_CCtx_refThreadPool(cctx1, pool);
+ ZSTD_CCtx_refThreadPool(cctx2, pool);
+
+ ZSTD_pthread_create(&t1, NULL, threadPoolTests_compressionJob, &p1);
+ ZSTD_pthread_create(&t2, NULL, threadPoolTests_compressionJob, &p2);
+ ZSTD_pthread_join(t1);
+ ZSTD_pthread_join(t2);
+
+ assert(!memcmp(decodedBuffer, decodedBuffer2, CNBuffSize));
+ free(decodedBuffer2);
+ free(compressedBuffer2);
+
+ ZSTD_freeThreadPool(pool);
+ ZSTD_freeCCtx(cctx1);
+ ZSTD_freeCCtx(cctx2);
+
+ if (p1.err || p2.err) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+_end:
+ free(CNBuffer);
+ free(compressedBuffer);
+ free(decodedBuffer);
+ return testResult;
+
+_output_error:
+ testResult = 1;
+ DISPLAY("Error detected in Unit tests ! \n");
+ goto _end;
+}
+#endif /* ZSTD_MULTITHREAD */
+
+/*=============================================
+* Unit tests
+=============================================*/
+
+static void test_compressBound(unsigned tnb)
+{
+ DISPLAYLEVEL(3, "test%3u : compressBound : ", tnb);
+
+ /* check ZSTD_compressBound == ZSTD_COMPRESSBOUND
+ * for a large range of known valid values */
+ DEBUG_STATIC_ASSERT(sizeof(size_t) >= 4);
+ { int s;
+ for (s=0; s<30; s++) {
+ size_t const w = (size_t)1 << s;
+ CHECK_EQ(ZSTD_compressBound(w), ZSTD_COMPRESSBOUND(w));
+ } }
+
+ /* Ensure error if srcSize too big */
+ { size_t const w = ZSTD_MAX_INPUT_SIZE + 1;
+ CHECK(ZSTD_isError(ZSTD_compressBound(w))); /* must fail */
+ CHECK_EQ(ZSTD_COMPRESSBOUND(w), 0);
+ }
+
+ DISPLAYLEVEL(3, "OK \n");
+}
+
+static void test_decompressBound(unsigned tnb)
+{
+ DISPLAYLEVEL(3, "test%3u : decompressBound : ", tnb);
+
+ /* Simple compression, with size : should provide size; */
+ { const char example[] = "abcd";
+ char cBuffer[ZSTD_COMPRESSBOUND(sizeof(example))];
+ size_t const cSize = ZSTD_compress(cBuffer, sizeof(cBuffer), example, sizeof(example), 0);
+ CHECK_Z(cSize);
+ CHECK_EQ(ZSTD_decompressBound(cBuffer, cSize), (unsigned long long)sizeof(example));
+ }
+
+ /* Simple small compression without size : should provide 1 block size */
+ { char cBuffer[ZSTD_COMPRESSBOUND(0)];
+ ZSTD_outBuffer out = { cBuffer, sizeof(cBuffer), 0 };
+ ZSTD_inBuffer in = { NULL, 0, 0 };
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ assert(cctx);
+ CHECK_Z( ZSTD_initCStream(cctx, 0) );
+ CHECK_Z( ZSTD_compressStream(cctx, &out, &in) );
+ CHECK_EQ( ZSTD_endStream(cctx, &out), 0 );
+ CHECK_EQ( ZSTD_decompressBound(cBuffer, out.pos), ZSTD_BLOCKSIZE_MAX );
+ ZSTD_freeCCtx(cctx);
+ }
+
+ /* Attempt to overflow 32-bit intermediate multiplication result
+ * This requires dBound >= 4 GB, aka 2^32.
+ * This requires 2^32 / 2^17 = 2^15 blocks
+ * => create 2^15 blocks (can be empty, or just 1 byte). */
+ { const char input[] = "a";
+ size_t const nbBlocks = (1 << 15) + 1;
+ size_t blockNb;
+ size_t const outCapacity = 1 << 18; /* large margin */
+ char* const outBuffer = malloc (outCapacity);
+ ZSTD_outBuffer out = { outBuffer, outCapacity, 0 };
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ assert(cctx);
+ assert(outBuffer);
+ CHECK_Z( ZSTD_initCStream(cctx, 0) );
+ for (blockNb=0; blockNb<nbBlocks; blockNb++) {
+ ZSTD_inBuffer in = { input, sizeof(input), 0 };
+ CHECK_Z( ZSTD_compressStream(cctx, &out, &in) );
+ CHECK_EQ( ZSTD_flushStream(cctx, &out), 0 );
+ }
+ CHECK_EQ( ZSTD_endStream(cctx, &out), 0 );
+ CHECK( ZSTD_decompressBound(outBuffer, out.pos) > 0x100000000LLU /* 4 GB */ );
+ ZSTD_freeCCtx(cctx);
+ free(outBuffer);
+ }
+
+ DISPLAYLEVEL(3, "OK \n");
+}
+
+static void test_setCParams(unsigned tnb)
+{
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_compressionParameters cparams;
+ assert(cctx);
+
+ DISPLAYLEVEL(3, "test%3u : ZSTD_CCtx_setCParams : ", tnb);
+
+ /* valid cparams */
+ cparams = ZSTD_getCParams(1, 0, 0);
+ CHECK_Z(ZSTD_CCtx_setCParams(cctx, cparams));
+
+ /* invalid cparams (must fail) */
+ cparams.windowLog = 99;
+ CHECK(ZSTD_isError(ZSTD_CCtx_setCParams(cctx, cparams)));
+
+ free(cctx);
+ DISPLAYLEVEL(3, "OK \n");
+}
+
+static int basicUnitTests(U32 const seed, double compressibility)
+{
+ size_t const CNBuffSize = 5 MB;
+ void* const CNBuffer = malloc(CNBuffSize);
+ size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize);
+ void* const compressedBuffer = malloc(compressedBufferSize);
+ void* const decodedBuffer = malloc(CNBuffSize);
+ int testResult = 0;
+ unsigned testNb=0;
+ size_t cSize;
+
+ /* Create compressible noise */
+ if (!CNBuffer || !compressedBuffer || !decodedBuffer) {
+ DISPLAY("Not enough memory, aborting\n");
+ testResult = 1;
+ goto _end;
+ }
+ RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed);
+
+ /* Basic tests */
+ DISPLAYLEVEL(3, "test%3u : ZSTD_getErrorName : ", testNb++);
+ { const char* errorString = ZSTD_getErrorName(0);
+ DISPLAYLEVEL(3, "OK : %s \n", errorString);
+ }
+
+ DISPLAYLEVEL(3, "test%3u : ZSTD_getErrorName with wrong value : ", testNb++);
+ { const char* errorString = ZSTD_getErrorName(499);
+ DISPLAYLEVEL(3, "OK : %s \n", errorString);
+ }
+
+ DISPLAYLEVEL(3, "test%3u : min compression level : ", testNb++);
+ { int const mcl = ZSTD_minCLevel();
+ DISPLAYLEVEL(3, "%i (OK) \n", mcl);
+ }
+
+ DISPLAYLEVEL(3, "test%3u : default compression level : ", testNb++);
+ { int const defaultCLevel = ZSTD_defaultCLevel();
+ if (defaultCLevel != ZSTD_CLEVEL_DEFAULT) goto _output_error;
+ DISPLAYLEVEL(3, "%i (OK) \n", defaultCLevel);
+ }
+
+ DISPLAYLEVEL(3, "test%3u : ZSTD_versionNumber : ", testNb++);
+ { unsigned const vn = ZSTD_versionNumber();
+ DISPLAYLEVEL(3, "%u (OK) \n", vn);
+ }
+
+ test_compressBound(testNb++);
+
+ test_decompressBound(testNb++);
+
+ test_setCParams(testNb++);
+
+ DISPLAYLEVEL(3, "test%3u : ZSTD_adjustCParams : ", testNb++);
+ {
+ ZSTD_compressionParameters params;
+ memset(¶ms, 0, sizeof(params));
+ params.windowLog = 10;
+ params.hashLog = 19;
+ params.chainLog = 19;
+ params = ZSTD_adjustCParams(params, 1000, 100000);
+ if (params.hashLog != 18) goto _output_error;
+ if (params.chainLog != 17) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3u : compress %u bytes : ", testNb++, (unsigned)CNBuffSize);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ if (cctx==NULL) goto _output_error;
+ CHECK_VAR(cSize, ZSTD_compressCCtx(cctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, 1) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : size of cctx for level 1 : ", testNb++);
+ { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
+ DISPLAYLEVEL(3, "%u bytes \n", (unsigned)cctxSize);
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : decompress skippable frame -8 size : ", testNb++);
+ {
+ char const skippable8[] = "\x50\x2a\x4d\x18\xf8\xff\xff\xff";
+ size_t const size = ZSTD_decompress(NULL, 0, skippable8, 8);
+ if (!ZSTD_isError(size)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_getFrameContentSize test : ", testNb++);
+ { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
+ if (rSize != CNBuffSize) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_getDecompressedSize test : ", testNb++);
+ { unsigned long long const rSize = ZSTD_getDecompressedSize(compressedBuffer, cSize);
+ if (rSize != CNBuffSize) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_findDecompressedSize test : ", testNb++);
+ { unsigned long long const rSize = ZSTD_findDecompressedSize(compressedBuffer, cSize);
+ if (rSize != CNBuffSize) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : tight ZSTD_decompressBound test : ", testNb++);
+ {
+ unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize);
+ if (bound != CNBuffSize) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with invalid srcSize : ", testNb++);
+ {
+ unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize - 1);
+ if (bound != ZSTD_CONTENTSIZE_ERROR) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress %u bytes with Huffman assembly disabled : ", testNb++, (unsigned)CNBuffSize);
+ {
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ size_t r;
+ CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_disableHuffmanAssembly, 1));
+ r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (r != CNBuffSize || memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error;
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
+ { size_t u;
+ for (u=0; u<CNBuffSize; u++) {
+ if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3u : invalid endDirective : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_inBuffer inb = { CNBuffer, CNBuffSize, 0 };
+ ZSTD_outBuffer outb = { compressedBuffer, compressedBufferSize, 0 };
+ if (cctx==NULL) goto _output_error;
+ CHECK( ZSTD_isError( ZSTD_compressStream2(cctx, &outb, &inb, (ZSTD_EndDirective) 3) ) ); /* must fail */
+ CHECK( ZSTD_isError( ZSTD_compressStream2(cctx, &outb, &inb, (ZSTD_EndDirective)-1) ) ); /* must fail */
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_checkCParams : ", testNb++);
+ {
+ ZSTD_parameters params = ZSTD_getParams(3, 0, 0);
+ assert(!ZSTD_checkCParams(params.cParams));
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_createDCtx_advanced and ZSTD_sizeof_DCtx: ", testNb++);
+ {
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx_advanced(ZSTD_defaultCMem);
+ assert(dctx != NULL);
+ assert(ZSTD_sizeof_DCtx(dctx) != 0);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : misc unaccounted for zstd symbols : ", testNb++);
+ {
+ /* %p takes a void*. In ISO C, it's illegal to cast a function pointer
+ * to a data pointer. (Although in POSIX you're required to be allowed
+ * to do it...) So we have to fall back to our trusty friend memcpy. */
+ unsigned (* const funcptr_getDictID)(const ZSTD_DDict* ddict) =
+ ZSTD_getDictID_fromDDict;
+ ZSTD_DStream* (* const funcptr_createDStream)(
+ ZSTD_customMem customMem) = ZSTD_createDStream_advanced;
+ void (* const funcptr_copyDCtx)(
+ ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx) = ZSTD_copyDCtx;
+ ZSTD_nextInputType_e (* const funcptr_nextInputType)(ZSTD_DCtx* dctx) =
+ ZSTD_nextInputType;
+ const void *voidptr_getDictID;
+ const void *voidptr_createDStream;
+ const void *voidptr_copyDCtx;
+ const void *voidptr_nextInputType;
+ DEBUG_STATIC_ASSERT(sizeof(funcptr_getDictID) == sizeof(voidptr_getDictID));
+ memcpy(
+ (void*)&voidptr_getDictID,
+ (const void*)&funcptr_getDictID,
+ sizeof(void*));
+ memcpy(
+ (void*)&voidptr_createDStream,
+ (const void*)&funcptr_createDStream,
+ sizeof(void*));
+ memcpy(
+ (void*)&voidptr_copyDCtx,
+ (const void*)&funcptr_copyDCtx,
+ sizeof(void*));
+ memcpy(
+ (void*)&voidptr_nextInputType,
+ (const void*)&funcptr_nextInputType,
+ sizeof(void*));
+ DISPLAYLEVEL(3, "%p ", voidptr_getDictID);
+ DISPLAYLEVEL(3, "%p ", voidptr_createDStream);
+ DISPLAYLEVEL(3, "%p ", voidptr_copyDCtx);
+ DISPLAYLEVEL(3, "%p ", voidptr_nextInputType);
+ }
+ DISPLAYLEVEL(3, ": OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress with null dict : ", testNb++);
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
+ { size_t const r = ZSTD_decompress_usingDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ NULL, 0);
+ if (r != CNBuffSize) goto _output_error;
+ }
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress with null DDict : ", testNb++);
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
+ { size_t const r = ZSTD_decompress_usingDDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ NULL);
+ if (r != CNBuffSize) goto _output_error;
+ }
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress with 1 missing byte : ", testNb++);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize-1);
+ if (!ZSTD_isError(r)) goto _output_error;
+ if (ZSTD_getErrorCode((size_t)r) != ZSTD_error_srcSize_wrong) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress with 1 too much byte : ", testNb++);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize+1);
+ if (!ZSTD_isError(r)) goto _output_error;
+ if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress too large input : ", testNb++);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, compressedBufferSize);
+ if (!ZSTD_isError(r)) goto _output_error;
+ if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress into NULL buffer : ", testNb++);
+ { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, compressedBufferSize);
+ if (!ZSTD_isError(r)) goto _output_error;
+ if (ZSTD_getErrorCode(r) != ZSTD_error_dstSize_tooSmall) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress with corrupted checksum : ", testNb++);
+ { /* create compressed buffer with checksumming enabled */
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ if (!cctx) {
+ DISPLAY("Not enough memory, aborting\n");
+ testResult = 1;
+ goto _end;
+ }
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1) );
+ CHECK_VAR(cSize, ZSTD_compress2(cctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize) );
+ ZSTD_freeCCtx(cctx);
+ }
+ { /* copy the compressed buffer and corrupt the checksum */
+ size_t r;
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ if (!dctx) {
+ DISPLAY("Not enough memory, aborting\n");
+ testResult = 1;
+ goto _end;
+ }
+
+ ((char*)compressedBuffer)[cSize-1] += 1;
+ r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (!ZSTD_isError(r)) goto _output_error;
+ if (ZSTD_getErrorCode(r) != ZSTD_error_checksum_wrong) goto _output_error;
+
+ CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_forceIgnoreChecksum, ZSTD_d_ignoreChecksum));
+ r = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize-1);
+ if (!ZSTD_isError(r)) goto _output_error; /* wrong checksum size should still throw error */
+ r = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (ZSTD_isError(r)) goto _output_error;
+
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with content size missing : ", testNb++);
+ { /* create compressed buffer with content size missing */
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0) );
+ CHECK_VAR(cSize, ZSTD_compress2(cctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize) );
+ ZSTD_freeCCtx(cctx);
+ }
+ { /* ensure frame content size is missing */
+ ZSTD_frameHeader zfh;
+ size_t const ret = ZSTD_getFrameHeader(&zfh, compressedBuffer, compressedBufferSize);
+ if (ret != 0 || zfh.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
+ }
+ { /* ensure CNBuffSize <= decompressBound */
+ unsigned long long const bound = ZSTD_decompressBound(compressedBuffer, compressedBufferSize);
+ if (CNBuffSize > bound) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d: check DCtx size is reduced after many oversized calls : ", testNb++);
+ {
+ size_t const largeFrameSrcSize = 200;
+ size_t const smallFrameSrcSize = 10;
+ size_t const nbFrames = 256;
+
+ size_t i = 0, consumed = 0, produced = 0, prevDCtxSize = 0;
+ int sizeReduced = 0;
+
+ BYTE* const dst = (BYTE*)compressedBuffer;
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+
+ /* create a large frame and then a bunch of small frames */
+ size_t srcSize = ZSTD_compress((void*)dst,
+ compressedBufferSize, CNBuffer, largeFrameSrcSize, 3);
+ for (i = 0; i < nbFrames; i++)
+ srcSize += ZSTD_compress((void*)(dst + srcSize),
+ compressedBufferSize - srcSize, CNBuffer,
+ smallFrameSrcSize, 3);
+
+ /* decompressStream and make sure that dctx size was reduced at least once */
+ while (consumed < srcSize) {
+ ZSTD_inBuffer in = {(void*)(dst + consumed), MIN(1, srcSize - consumed), 0};
+ ZSTD_outBuffer out = {(BYTE*)CNBuffer + produced, CNBuffSize - produced, 0};
+ ZSTD_decompressStream(dctx, &out, &in);
+ consumed += in.pos;
+ produced += out.pos;
+
+ /* success! size was reduced from the previous frame */
+ if (prevDCtxSize > ZSTD_sizeof_DCtx(dctx))
+ sizeReduced = 1;
+
+ prevDCtxSize = ZSTD_sizeof_DCtx(dctx);
+ }
+
+ assert(sizeReduced);
+
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ {
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, 100, 1);
+ ZSTD_parameters const params = ZSTD_getParams(1, 0, 0);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_format, ZSTD_f_zstd1_magicless) );
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressCCtx() doesn't use advanced parameters", testNb++);
+ CHECK_Z(ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, NULL, 0, 1));
+ if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingDict() doesn't use advanced parameters: ", testNb++);
+ CHECK_Z(ZSTD_compress_usingDict(cctx, compressedBuffer, compressedBufferSize, NULL, 0, NULL, 0, 1));
+ if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingCDict() doesn't use advanced parameters: ", testNb++);
+ CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, NULL, 0, cdict));
+ if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress_advanced() doesn't use advanced parameters: ", testNb++);
+ CHECK_Z(ZSTD_compress_advanced(cctx, compressedBuffer, compressedBufferSize, NULL, 0, NULL, 0, params));
+ if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingCDict_advanced() doesn't use advanced parameters: ", testNb++);
+ CHECK_Z(ZSTD_compress_usingCDict_advanced(cctx, compressedBuffer, compressedBufferSize, NULL, 0, cdict, params.fParams));
+ if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ ZSTD_freeCDict(cdict);
+ ZSTD_freeCCtx(cctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : ldm fill dict out-of-bounds check", testNb++);
+ {
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+
+ size_t const size = (1U << 10);
+ size_t const dstCapacity = ZSTD_compressBound(size);
+ void* dict = (void*)malloc(size);
+ void* src = (void*)malloc(size);
+ void* dst = (void*)malloc(dstCapacity);
+
+ RDG_genBuffer(dict, size, 0.5, 0.5, seed);
+ RDG_genBuffer(src, size, 0.5, 0.5, seed);
+
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
+ assert(!ZSTD_isError(ZSTD_compress_usingDict(cctx, dst, dstCapacity, src, size, dict, size, 3)));
+
+ ZSTD_freeCCtx(cctx);
+ free(dict);
+ free(src);
+ free(dst);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : testing dict compression with enableLdm and forceMaxWindow : ", testNb++);
+ {
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ void* dict = (void*)malloc(CNBuffSize);
+ int nbWorkers;
+
+ for (nbWorkers = 0; nbWorkers < 3; ++nbWorkers) {
+ RDG_genBuffer(dict, CNBuffSize, 0.5, 0.5, seed);
+ RDG_genBuffer(CNBuffer, CNBuffSize, 0.6, 0.6, seed);
+
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbWorkers));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceMaxWindow, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
+ CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, CNBuffSize));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, CNBuffSize));
+ }
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ free(dict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : testing dict compression for determinism : ", testNb++);
+ {
+ size_t const testSize = 1024;
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ char* dict = (char*)malloc(2 * testSize);
+ int ldmEnabled, level;
+
+ RDG_genBuffer(dict, testSize, 0.5, 0.5, seed);
+ RDG_genBuffer(CNBuffer, testSize, 0.6, 0.6, seed);
+ memcpy(dict + testSize, CNBuffer, testSize);
+ for (level = 1; level <= 5; ++level) {
+ for (ldmEnabled = ZSTD_ps_enable; ldmEnabled <= ZSTD_ps_disable; ++ldmEnabled) {
+ size_t cSize0;
+ XXH64_hash_t compressedChecksum0;
+
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, level));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ldmEnabled));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_deterministicRefPrefix, 1));
+
+ CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, testSize));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, testSize);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, testSize, compressedBuffer, cSize, dict, testSize));
+
+ cSize0 = cSize;
+ compressedChecksum0 = XXH64(compressedBuffer, cSize, 0);
+
+ CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, testSize));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, dict + testSize, testSize);
+ CHECK_Z(cSize);
+
+ if (cSize != cSize0) goto _output_error;
+ if (XXH64(compressedBuffer, cSize, 0) != compressedChecksum0) goto _output_error;
+ }
+ }
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ free(dict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : LDM + opt parser with small uncompressible block ", testNb++);
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ size_t const srcSize = 300 KB;
+ size_t const flushSize = 128 KB + 5;
+ size_t const dstSize = ZSTD_compressBound(srcSize);
+ char* src = (char*)CNBuffer;
+ char* dst = (char*)compressedBuffer;
+
+ ZSTD_outBuffer out = { dst, dstSize, 0 };
+ ZSTD_inBuffer in = { src, flushSize, 0 };
+
+ if (!cctx || !dctx) {
+ DISPLAY("Not enough memory, aborting\n");
+ testResult = 1;
+ goto _end;
+ }
+
+ RDG_genBuffer(src, srcSize, 0.5, 0.5, seed);
+ /* Force an LDM to exist that crosses block boundary into uncompressible block */
+ memcpy(src + 125 KB, src, 3 KB + 5);
+
+ /* Enable MT, LDM, and opt parser */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 19));
+
+ /* Flushes a block of 128 KB and block of 5 bytes */
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+
+ /* Compress the rest */
+ in.size = 300 KB;
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBuffSize, dst, out.pos));
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : testing ldm dictionary gets invalidated : ", testNb++);
+ {
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ void* dict = (void*)malloc(CNBuffSize);
+ size_t const kWindowLog = 10;
+ size_t const kWindowSize = (size_t)1 << kWindowLog;
+ size_t const dictSize = kWindowSize * 10;
+ size_t const srcSize1 = kWindowSize / 2;
+ size_t const srcSize2 = kWindowSize * 10;
+
+ if (CNBuffSize < dictSize) goto _output_error;
+
+ RDG_genBuffer(dict, dictSize, 0.5, 0.5, seed);
+ RDG_genBuffer(CNBuffer, srcSize1 + srcSize2, 0.5, 0.5, seed);
+
+ /* Enable checksum to verify round trip. */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ /* Disable content size to skip single-pass decompression. */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, (int)kWindowLog));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmMinMatch, 32));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmHashRateLog, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmHashLog, 16));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmBucketSizeLog, 3));
+
+ /* Round trip once with a dictionary. */
+ CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, dictSize));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, srcSize1);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, dictSize));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, srcSize2);
+ /* Streaming decompression to catch out of bounds offsets. */
+ {
+ ZSTD_inBuffer in = {compressedBuffer, cSize, 0};
+ ZSTD_outBuffer out = {decodedBuffer, CNBuffSize, 0};
+ size_t const dSize = ZSTD_decompressStream(dctx, &out, &in);
+ CHECK_Z(dSize);
+ if (dSize != 0) goto _output_error;
+ }
+
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2));
+ /* Round trip once with a dictionary. */
+ CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, dictSize));
+ {
+ ZSTD_inBuffer in = {CNBuffer, srcSize1, 0};
+ ZSTD_outBuffer out = {compressedBuffer, compressedBufferSize, 0};
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ cSize = out.pos;
+ }
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, dictSize));
+ {
+ ZSTD_inBuffer in = {CNBuffer, srcSize2, 0};
+ ZSTD_outBuffer out = {compressedBuffer, compressedBufferSize, 0};
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ cSize = out.pos;
+ }
+ /* Streaming decompression to catch out of bounds offsets. */
+ {
+ ZSTD_inBuffer in = {compressedBuffer, cSize, 0};
+ ZSTD_outBuffer out = {decodedBuffer, CNBuffSize, 0};
+ size_t const dSize = ZSTD_decompressStream(dctx, &out, &in);
+ CHECK_Z(dSize);
+ if (dSize != 0) goto _output_error;
+ }
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ free(dict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Note: this test takes 0.5 seconds to run */
+ DISPLAYLEVEL(3, "test%3i : testing refPrefx vs refPrefx + ldm (size comparison) : ", testNb++);
+ {
+ /* test a big buffer so that ldm can take effect */
+ size_t const size = 100 MB;
+ int const windowLog = 27;
+ size_t const dstSize = ZSTD_compressBound(size);
+
+ void* dict = (void*)malloc(size);
+ void* src = (void*)malloc(size);
+ void* dst = (void*)malloc(dstSize);
+ void* recon = (void*)malloc(size);
+
+ size_t refPrefixCompressedSize = 0;
+ size_t refPrefixLdmCompressedSize = 0;
+ size_t reconSize = 0;
+
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+
+ /* make dict and src the same uncompressible data */
+ RDG_genBuffer(src, size, 0, 0, seed);
+ memcpy(dict, src, size);
+ assert(!memcmp(dict, src, size));
+
+ /* set level 1 and windowLog to cover src */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, windowLog));
+
+ /* compress on level 1 using just refPrefix and no ldm */
+ ZSTD_CCtx_refPrefix(cctx, dict, size);
+ refPrefixCompressedSize = ZSTD_compress2(cctx, dst, dstSize, src, size);
+ assert(!ZSTD_isError(refPrefixCompressedSize));
+
+ /* test round trip just refPrefix */
+ ZSTD_DCtx_refPrefix(dctx, dict, size);
+ reconSize = ZSTD_decompressDCtx(dctx, recon, size, dst, refPrefixCompressedSize);
+ assert(!ZSTD_isError(reconSize));
+ assert(reconSize == size);
+ assert(!memcmp(recon, src, size));
+
+ /* compress on level 1 using refPrefix and ldm */
+ ZSTD_CCtx_refPrefix(cctx, dict, size);;
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable))
+ refPrefixLdmCompressedSize = ZSTD_compress2(cctx, dst, dstSize, src, size);
+ assert(!ZSTD_isError(refPrefixLdmCompressedSize));
+
+ /* test round trip refPrefix + ldm*/
+ ZSTD_DCtx_refPrefix(dctx, dict, size);
+ reconSize = ZSTD_decompressDCtx(dctx, recon, size, dst, refPrefixLdmCompressedSize);
+ assert(!ZSTD_isError(reconSize));
+ assert(reconSize == size);
+ assert(!memcmp(recon, src, size));
+
+ /* make sure that refPrefixCompressedSize is significantly greater */
+ assert(refPrefixCompressedSize > 10 * refPrefixLdmCompressedSize);
+ /* make sure the ldm compressed size is less than 1% of original */
+ assert((double)refPrefixLdmCompressedSize / (double)size < 0.01);
+
+ ZSTD_freeDCtx(dctx);
+ ZSTD_freeCCtx(cctx);
+ free(recon);
+ free(dict);
+ free(src);
+ free(dst);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : in-place decompression : ", testNb++);
+ cSize = ZSTD_compress(compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize, -ZSTD_BLOCKSIZE_MAX);
+ CHECK_Z(cSize);
+ CHECK_LT(CNBuffSize, cSize);
+ {
+ size_t const margin = ZSTD_decompressionMargin(compressedBuffer, cSize);
+ size_t const outputSize = (CNBuffSize + margin);
+ char* output = malloc(outputSize);
+ char* input = output + outputSize - cSize;
+ CHECK_LT(cSize, CNBuffSize + margin);
+ CHECK(output != NULL);
+ CHECK_Z(margin);
+ CHECK(margin <= ZSTD_DECOMPRESSION_MARGIN(CNBuffSize, ZSTD_BLOCKSIZE_MAX));
+ memcpy(input, compressedBuffer, cSize);
+
+ {
+ size_t const dSize = ZSTD_decompress(output, outputSize, input, cSize);
+ CHECK_Z(dSize);
+ CHECK_EQ(dSize, CNBuffSize);
+ }
+ CHECK(!memcmp(output, CNBuffer, CNBuffSize));
+ free(output);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : in-place decompression with 2 frames : ", testNb++);
+ cSize = ZSTD_compress(compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize / 3, -ZSTD_BLOCKSIZE_MAX);
+ CHECK_Z(cSize);
+ {
+ size_t const cSize2 = ZSTD_compress((char*)compressedBuffer + cSize, compressedBufferSize - cSize, (char const*)CNBuffer + (CNBuffSize / 3), CNBuffSize / 3, -ZSTD_BLOCKSIZE_MAX);
+ CHECK_Z(cSize2);
+ cSize += cSize2;
+ }
+ {
+ size_t const srcSize = (CNBuffSize / 3) * 2;
+ size_t const margin = ZSTD_decompressionMargin(compressedBuffer, cSize);
+ size_t const outputSize = (CNBuffSize + margin);
+ char* output = malloc(outputSize);
+ char* input = output + outputSize - cSize;
+ CHECK_LT(cSize, CNBuffSize + margin);
+ CHECK(output != NULL);
+ CHECK_Z(margin);
+ memcpy(input, compressedBuffer, cSize);
+
+ {
+ size_t const dSize = ZSTD_decompress(output, outputSize, input, cSize);
+ CHECK_Z(dSize);
+ CHECK_EQ(dSize, srcSize);
+ }
+ CHECK(!memcmp(output, CNBuffer, srcSize));
+ free(output);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Check block splitter with 64K literal length : ", testNb++);
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ size_t const srcSize = 256 * 1024;
+ U32 const compressibleLenU32 = 32 * 1024 / 4;
+ U32 const blockSizeU32 = 128 * 1024 / 4;
+ U32 const litLenU32 = 64 * 1024 / 4;
+ U32* data = (U32*)malloc(srcSize);
+ size_t dSize;
+
+ if (data == NULL || cctx == NULL) goto _output_error;
+
+ /* Generate data without any matches */
+ RDG_genBuffer(data, srcSize, 0.0, 0.01, 2654435761U);
+ /* Generate 32K of compressible data */
+ RDG_genBuffer(data, compressibleLenU32 * 4, 0.5, 0.5, 0xcafebabe);
+
+ /* Add a match of offset=12, length=8 at idx=16, 32, 48, 64 */
+ data[compressibleLenU32 + 0] = 0xFFFFFFFF;
+ data[compressibleLenU32 + 1] = 0xEEEEEEEE;
+ data[compressibleLenU32 + 4] = 0xFFFFFFFF;
+ data[compressibleLenU32 + 5] = 0xEEEEEEEE;
+
+ /* Add a match of offset=16, length=8 at idx=64K + 64.
+ * This generates a sequence with llen=64K, and repeat code 1.
+ * The block splitter thought this was ll0, and corrupted the
+ * repeat offset history.
+ */
+ data[compressibleLenU32 + litLenU32 + 2 + 0] = 0xDDDDDDDD;
+ data[compressibleLenU32 + litLenU32 + 2 + 1] = 0xCCCCCCCC;
+ data[compressibleLenU32 + litLenU32 + 2 + 4] = 0xDDDDDDDD;
+ data[compressibleLenU32 + litLenU32 + 2 + 5] = 0xCCCCCCCC;
+
+ /* Add a match of offset=16, length=8 at idx=128K + 16.
+ * This should generate a sequence with repeat code = 1.
+ * But the block splitters mistake caused zstd to generate
+ * repeat code = 2, corrupting the data.
+ */
+ data[blockSizeU32] = 0xBBBBBBBB;
+ data[blockSizeU32 + 1] = 0xAAAAAAAA;
+ data[blockSizeU32 + 4] = 0xBBBBBBBB;
+ data[blockSizeU32 + 5] = 0xAAAAAAAA;
+
+ /* Generate a golden file from this data in case datagen changes and
+ * doesn't generate the exact same data. We will also test this golden file.
+ */
+ if (0) {
+ FILE* f = fopen("golden-compression/PR-3517-block-splitter-corruption-test", "wb");
+ fwrite(data, 1, srcSize, f);
+ fclose(f);
+ }
+
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 19));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 7));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_useBlockSplitter, ZSTD_ps_enable));
+
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, data, srcSize);
+ CHECK_Z(cSize);
+ dSize = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ CHECK_Z(dSize);
+ CHECK_EQ(dSize, srcSize);
+ CHECK(!memcmp(decodedBuffer, data, srcSize));
+
+ free(data);
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d: superblock uncompressible data, too many nocompress superblocks : ", testNb++);
+ {
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ const BYTE* src = (BYTE*)CNBuffer; BYTE* dst = (BYTE*)compressedBuffer;
+ size_t srcSize = 321656; size_t dstCapacity = ZSTD_compressBound(srcSize);
+
+ /* This is the number of bytes to stream before ending. This value
+ * was obtained by trial and error :/. */
+
+ const size_t streamCompressThreshold = 161792;
+ const size_t streamCompressDelta = 1024;
+
+ /* The first 1/5 of the buffer is compressible and the last 4/5 is
+ * uncompressible. This is an approximation of the type of data
+ * the fuzzer generated to catch this bug. Streams like this were making
+ * zstd generate noCompress superblocks (which are larger than the src
+ * they come from). Do this enough times, and we'll run out of room
+ * and throw a dstSize_tooSmall error. */
+
+ const size_t compressiblePartSize = srcSize/5;
+ const size_t uncompressiblePartSize = srcSize-compressiblePartSize;
+ RDG_genBuffer(CNBuffer, compressiblePartSize, 0.5, 0.5, seed);
+ RDG_genBuffer((BYTE*)CNBuffer+compressiblePartSize, uncompressiblePartSize, 0, 0, seed);
+
+ /* Setting target block size so that superblock is used */
+
+ assert(cctx != NULL);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetCBlockSize, 81);
+
+ { size_t read;
+ for (read = 0; read < streamCompressThreshold; read += streamCompressDelta) {
+ ZSTD_inBuffer in = {src, streamCompressDelta, 0};
+ ZSTD_outBuffer out = {dst, dstCapacity, 0};
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue));
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ src += streamCompressDelta; srcSize -= streamCompressDelta;
+ dst += out.pos; dstCapacity -= out.pos;
+ } }
+
+ /* This is trying to catch a dstSize_tooSmall error */
+
+ { ZSTD_inBuffer in = {src, srcSize, 0};
+ ZSTD_outBuffer out = {dst, dstCapacity, 0};
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d: superblock with no literals : ", testNb++);
+ /* Generate the same data 20 times over */
+ { size_t const avgChunkSize = CNBuffSize / 20;
+ size_t b;
+ for (b = 0; b < CNBuffSize; b += avgChunkSize) {
+ size_t const chunkSize = MIN(CNBuffSize - b, avgChunkSize);
+ RDG_genBuffer((char*)CNBuffer + b, chunkSize, compressibility, 0. /* auto */, seed);
+ } }
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t const normalCSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ size_t const allowedExpansion = (CNBuffSize * 3 / 1000);
+ size_t superCSize;
+ CHECK_Z(normalCSize);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 19);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetCBlockSize, 1000);
+ superCSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(superCSize);
+ if (superCSize > normalCSize + allowedExpansion) {
+ DISPLAYLEVEL(1, "Superblock too big: %u > %u + %u \n", (U32)superCSize, (U32)normalCSize, (U32)allowedExpansion);
+ goto _output_error;
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0. /*auto*/, seed);
+ DISPLAYLEVEL(3, "test%3d: superblock enough room for checksum : ", testNb++)
+ /* This tests whether or not we leave enough room for the checksum at the end
+ * of the dst buffer. The bug that motivated this test was found by the
+ * stream_round_trip fuzzer but this crashes for the same reason and is
+ * far more compact than re-creating the stream_round_trip fuzzer's code path */
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetCBlockSize, 64);
+ assert(!ZSTD_isError(ZSTD_compress2(cctx, compressedBuffer, 1339, CNBuffer, 1278)));
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress a NULL input with each level : ", testNb++);
+ { int level = -1;
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ if (!cctx) goto _output_error;
+ for (level = -1; level <= ZSTD_maxCLevel(); ++level) {
+ CHECK_Z( ZSTD_compress(compressedBuffer, compressedBufferSize, NULL, 0, level) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, level) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, NULL, 0) );
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : check CCtx size after compressing empty input : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t const r = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, NULL, 0, 19);
+ if (ZSTD_isError(r)) goto _output_error;
+ if (ZSTD_sizeof_CCtx(cctx) > (1U << 20)) goto _output_error;
+ ZSTD_freeCCtx(cctx);
+ cSize = r;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : decompress empty frame into NULL : ", testNb++);
+ { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, cSize);
+ if (ZSTD_isError(r)) goto _output_error;
+ if (r != 0) goto _output_error;
+ }
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_outBuffer output;
+ if (cctx==NULL) goto _output_error;
+ output.dst = compressedBuffer;
+ output.size = compressedBufferSize;
+ output.pos = 0;
+ CHECK_Z( ZSTD_initCStream(cctx, 1) ); /* content size unknown */
+ CHECK_Z( ZSTD_flushStream(cctx, &output) ); /* ensure no possibility to "concatenate" and determine the content size */
+ CHECK_Z( ZSTD_endStream(cctx, &output) );
+ ZSTD_freeCCtx(cctx);
+ /* single scan decompression */
+ { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, output.pos);
+ if (ZSTD_isError(r)) goto _output_error;
+ if (r != 0) goto _output_error;
+ }
+ /* streaming decompression */
+ { ZSTD_DCtx* const dstream = ZSTD_createDStream();
+ ZSTD_inBuffer dinput;
+ ZSTD_outBuffer doutput;
+ size_t ipos;
+ if (dstream==NULL) goto _output_error;
+ dinput.src = compressedBuffer;
+ dinput.size = 0;
+ dinput.pos = 0;
+ doutput.dst = NULL;
+ doutput.size = 0;
+ doutput.pos = 0;
+ CHECK_Z ( ZSTD_initDStream(dstream) );
+ for (ipos=1; ipos<=output.pos; ipos++) {
+ dinput.size = ipos;
+ CHECK_Z ( ZSTD_decompressStream(dstream, &doutput, &dinput) );
+ }
+ if (doutput.pos != 0) goto _output_error;
+ ZSTD_freeDStream(dstream);
+ }
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : re-use CCtx with expanding block size : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_parameters const params = ZSTD_getParams(1, ZSTD_CONTENTSIZE_UNKNOWN, 0);
+ assert(params.fParams.contentSizeFlag == 1); /* block size will be adapted if pledgedSrcSize is enabled */
+ CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, 1 /*pledgedSrcSize*/) );
+ CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, compressedBufferSize, CNBuffer, 1) ); /* creates a block size of 1 */
+
+ CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN) ); /* re-use same parameters */
+ { size_t const inSize = 2* 128 KB;
+ size_t const outSize = ZSTD_compressBound(inSize);
+ CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, outSize, CNBuffer, inSize) );
+ /* will fail if blockSize is not resized */
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : re-using a CCtx should compress the same : ", testNb++);
+ { size_t const sampleSize = 30;
+ int i;
+ for (i=0; i<20; i++)
+ ((char*)CNBuffer)[i] = (char)i; /* ensure no match during initial section */
+ memcpy((char*)CNBuffer + 20, CNBuffer, 10); /* create one match, starting from beginning of sample, which is the difficult case (see #1241) */
+ for (i=1; i<=19; i++) {
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t size1, size2;
+ DISPLAYLEVEL(5, "l%i ", i);
+ size1 = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize, i);
+ CHECK_Z(size1);
+
+ size2 = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize, i);
+ CHECK_Z(size2);
+ CHECK_EQ(size1, size2);
+
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, i) );
+ size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize);
+ CHECK_Z(size2);
+ CHECK_EQ(size1, size2);
+
+ size2 = ZSTD_compress2(cctx, compressedBuffer, ZSTD_compressBound(sampleSize) - 1, CNBuffer, sampleSize); /* force streaming, as output buffer is not large enough to guarantee success */
+ CHECK_Z(size2);
+ CHECK_EQ(size1, size2);
+
+ { ZSTD_inBuffer inb;
+ ZSTD_outBuffer outb;
+ inb.src = CNBuffer;
+ inb.pos = 0;
+ inb.size = sampleSize;
+ outb.dst = compressedBuffer;
+ outb.pos = 0;
+ outb.size = ZSTD_compressBound(sampleSize) - 1; /* force streaming, as output buffer is not large enough to guarantee success */
+ CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) );
+ assert(inb.pos == inb.size);
+ CHECK_EQ(size1, outb.pos);
+ }
+
+ ZSTD_freeCCtx(cctx);
+ }
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : btultra2 & 1st block : ", testNb++);
+ { size_t const sampleSize = 1024;
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_inBuffer inb;
+ ZSTD_outBuffer outb;
+ inb.src = CNBuffer;
+ inb.pos = 0;
+ inb.size = 0;
+ outb.dst = compressedBuffer;
+ outb.pos = 0;
+ outb.size = compressedBufferSize;
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, ZSTD_maxCLevel()) );
+
+ inb.size = sampleSize; /* start with something, so that context is already used */
+ CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) ); /* will break internal assert if stats_init is not disabled */
+ assert(inb.pos == inb.size);
+ outb.pos = 0; /* cancel output */
+
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(cctx, sampleSize) );
+ inb.size = 4; /* too small size : compression will be skipped */
+ inb.pos = 0;
+ CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) );
+ assert(inb.pos == inb.size);
+
+ inb.size += 5; /* too small size : compression will be skipped */
+ CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) );
+ assert(inb.pos == inb.size);
+
+ inb.size += 11; /* small enough to attempt compression */
+ CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) );
+ assert(inb.pos == inb.size);
+
+ assert(inb.pos < sampleSize);
+ inb.size = sampleSize; /* large enough to trigger stats_init, but no longer at beginning */
+ CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) ); /* will break internal assert if stats_init is not disabled */
+ assert(inb.pos == inb.size);
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : ZSTD_CCtx_getParameter() : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_outBuffer out = {NULL, 0, 0};
+ ZSTD_inBuffer in = {NULL, 0, 0};
+ int value;
+
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
+ CHECK_EQ(value, 3);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, ZSTD_HASHLOG_MIN));
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
+ CHECK_EQ(value, 3);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, ZSTD_HASHLOG_MIN);
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7));
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
+ CHECK_EQ(value, 7);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, ZSTD_HASHLOG_MIN);
+ /* Start a compression job */
+ ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
+ CHECK_EQ(value, 7);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, ZSTD_HASHLOG_MIN);
+ /* Reset the CCtx */
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_only);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
+ CHECK_EQ(value, 7);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, ZSTD_HASHLOG_MIN);
+ /* Reset the parameters */
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_parameters);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value));
+ CHECK_EQ(value, 3);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, 0);
+
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : ZSTD_CCtx_setCParams() : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ int value;
+ ZSTD_compressionParameters cparams = ZSTD_getCParams(1, 0, 0);
+ cparams.strategy = -1;
+ /* Set invalid cParams == no change. */
+ CHECK(ZSTD_isError(ZSTD_CCtx_setCParams(cctx, cparams)));
+
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_windowLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_chainLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_searchLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_minMatch, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_targetLength, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_strategy, &value));
+ CHECK_EQ(value, 0);
+
+ cparams = ZSTD_getCParams(12, 0, 0);
+ CHECK_Z(ZSTD_CCtx_setCParams(cctx, cparams));
+
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_windowLog, &value));
+ CHECK_EQ(value, (int)cparams.windowLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_chainLog, &value));
+ CHECK_EQ(value, (int)cparams.chainLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, (int)cparams.hashLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_searchLog, &value));
+ CHECK_EQ(value, (int)cparams.searchLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_minMatch, &value));
+ CHECK_EQ(value, (int)cparams.minMatch);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_targetLength, &value));
+ CHECK_EQ(value, (int)cparams.targetLength);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_strategy, &value));
+ CHECK_EQ(value, (int)cparams.strategy);
+
+ ZSTD_freeCCtx(cctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3d : ZSTD_CCtx_setFParams() : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ int value;
+ ZSTD_frameParameters fparams = {0, 1, 1};
+
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_contentSizeFlag, &value));
+ CHECK_EQ(value, 1);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_checksumFlag, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_dictIDFlag, &value));
+ CHECK_EQ(value, 1);
+
+ CHECK_Z(ZSTD_CCtx_setFParams(cctx, fparams));
+
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_contentSizeFlag, &value));
+ CHECK_EQ(value, fparams.contentSizeFlag);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_checksumFlag, &value));
+ CHECK_EQ(value, fparams.checksumFlag);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_dictIDFlag, &value));
+ CHECK_EQ(value, !fparams.noDictIDFlag);
+
+ ZSTD_freeCCtx(cctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3d : ZSTD_CCtx_setCarams() : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ int value;
+ ZSTD_parameters params = ZSTD_getParams(1, 0, 0);
+ params.cParams.strategy = -1;
+ /* Set invalid params == no change. */
+ CHECK(ZSTD_isError(ZSTD_CCtx_setParams(cctx, params)));
+
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_windowLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_chainLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_searchLog, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_minMatch, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_targetLength, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_strategy, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_contentSizeFlag, &value));
+ CHECK_EQ(value, 1);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_checksumFlag, &value));
+ CHECK_EQ(value, 0);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_dictIDFlag, &value));
+ CHECK_EQ(value, 1);
+
+ params = ZSTD_getParams(12, 0, 0);
+ params.fParams.contentSizeFlag = 0;
+ params.fParams.checksumFlag = 1;
+ params.fParams.noDictIDFlag = 1;
+ CHECK_Z(ZSTD_CCtx_setParams(cctx, params));
+
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_windowLog, &value));
+ CHECK_EQ(value, (int)params.cParams.windowLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_chainLog, &value));
+ CHECK_EQ(value, (int)params.cParams.chainLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value));
+ CHECK_EQ(value, (int)params.cParams.hashLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_searchLog, &value));
+ CHECK_EQ(value, (int)params.cParams.searchLog);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_minMatch, &value));
+ CHECK_EQ(value, (int)params.cParams.minMatch);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_targetLength, &value));
+ CHECK_EQ(value, (int)params.cParams.targetLength);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_strategy, &value));
+ CHECK_EQ(value, (int)params.cParams.strategy);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_contentSizeFlag, &value));
+ CHECK_EQ(value, params.fParams.contentSizeFlag);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_checksumFlag, &value));
+ CHECK_EQ(value, params.fParams.checksumFlag);
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_dictIDFlag, &value));
+ CHECK_EQ(value, !params.fParams.noDictIDFlag);
+
+ ZSTD_freeCCtx(cctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3d : ldm conditionally enabled by default doesn't change cctx params: ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_outBuffer out = {NULL, 0, 0};
+ ZSTD_inBuffer in = {NULL, 0, 0};
+ int value;
+
+ /* Even if LDM will be enabled by default in the applied params (since wlog >= 27 and strategy >= btopt),
+ * we should not modify the actual parameter specified by the user within the CCtx
+ */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 27));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_strategy, ZSTD_btopt));
+
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue));
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_enableLongDistanceMatching, &value));
+ CHECK_EQ(value, 0);
+
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* this test is really too long, and should be made faster */
+ DISPLAYLEVEL(3, "test%3d : overflow protection with large windowLog : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_parameters params = ZSTD_getParams(-999, ZSTD_CONTENTSIZE_UNKNOWN, 0);
+ size_t const nbCompressions = ((1U << 31) / CNBuffSize) + 2; /* ensure U32 overflow protection is triggered */
+ size_t cnb;
+ assert(cctx != NULL);
+ params.fParams.contentSizeFlag = 0;
+ params.cParams.windowLog = ZSTD_WINDOWLOG_MAX;
+ for (cnb = 0; cnb < nbCompressions; ++cnb) {
+ DISPLAYLEVEL(6, "run %zu / %zu \n", cnb, nbCompressions);
+ CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN) ); /* re-use same parameters */
+ CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize) );
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : size down context : ", testNb++);
+ { ZSTD_CCtx* const largeCCtx = ZSTD_createCCtx();
+ assert(largeCCtx != NULL);
+ CHECK_Z( ZSTD_compressBegin(largeCCtx, 19) ); /* streaming implies ZSTD_CONTENTSIZE_UNKNOWN, which maximizes memory usage */
+ CHECK_Z( ZSTD_compressEnd(largeCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1) );
+ { size_t const largeCCtxSize = ZSTD_sizeof_CCtx(largeCCtx); /* size of context must be measured after compression */
+ { ZSTD_CCtx* const smallCCtx = ZSTD_createCCtx();
+ assert(smallCCtx != NULL);
+ CHECK_Z(ZSTD_compressCCtx(smallCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1, 1));
+ { size_t const smallCCtxSize = ZSTD_sizeof_CCtx(smallCCtx);
+ DISPLAYLEVEL(5, "(large) %zuKB > 32*%zuKB (small) : ",
+ largeCCtxSize>>10, smallCCtxSize>>10);
+ assert(largeCCtxSize > 32* smallCCtxSize); /* note : "too large" definition is handled within zstd_compress.c .
+ * make this test case extreme, so that it doesn't depend on a possibly fluctuating definition */
+ }
+ ZSTD_freeCCtx(smallCCtx);
+ }
+ { U32 const maxNbAttempts = 1100; /* nb of usages before triggering size down is handled within zstd_compress.c.
+ * currently defined as 128x, but could be adjusted in the future.
+ * make this test long enough so that it's not too much tied to the current definition within zstd_compress.c */
+ unsigned u;
+ for (u=0; u<maxNbAttempts; u++) {
+ CHECK_Z(ZSTD_compressCCtx(largeCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1, 1));
+ if (ZSTD_sizeof_CCtx(largeCCtx) < largeCCtxSize) break; /* sized down */
+ }
+ DISPLAYLEVEL(5, "size down after %u attempts : ", u);
+ if (u==maxNbAttempts) goto _output_error; /* no sizedown happened */
+ }
+ }
+ ZSTD_freeCCtx(largeCCtx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Static CCtx tests */
+#define STATIC_CCTX_LEVEL 4
+ DISPLAYLEVEL(3, "test%3i : create static CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL);
+ { size_t const staticCStreamSize = ZSTD_estimateCStreamSize(STATIC_CCTX_LEVEL);
+ void* const staticCCtxBuffer = malloc(staticCStreamSize);
+ size_t const staticDCtxSize = ZSTD_estimateDCtxSize();
+ void* const staticDCtxBuffer = malloc(staticDCtxSize);
+ DISPLAYLEVEL(4, "CStream size = %u, ", (U32)staticCStreamSize);
+ if (staticCCtxBuffer==NULL || staticDCtxBuffer==NULL) {
+ free(staticCCtxBuffer);
+ free(staticDCtxBuffer);
+ DISPLAY("Not enough memory, aborting\n");
+ testResult = 1;
+ goto _end;
+ }
+ { size_t const smallInSize = 32 KB;
+ ZSTD_compressionParameters const cparams_small = ZSTD_getCParams(STATIC_CCTX_LEVEL, smallInSize, 0);
+ size_t const smallCCtxSize = ZSTD_estimateCCtxSize_usingCParams(cparams_small);
+ size_t const staticCCtxSize = ZSTD_estimateCCtxSize(STATIC_CCTX_LEVEL);
+ ZSTD_CCtx* staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, smallCCtxSize);
+ ZSTD_DCtx* const staticDCtx = ZSTD_initStaticDCtx(staticDCtxBuffer, staticDCtxSize);
+ DISPLAYLEVEL(4, "Full CCtx size = %u, ", (U32)staticCCtxSize);
+ DISPLAYLEVEL(4, "CCtx for 32 KB = %u, ", (U32)smallCCtxSize);
+ if ((staticCCtx==NULL) || (staticDCtx==NULL)) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress small input with small static CCtx : ", testNb++);
+ CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, smallInSize, STATIC_CCTX_LEVEL) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n",
+ (unsigned)cSize, (double)cSize/smallInSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : compress large input with small static CCtx (must fail) : ", testNb++);
+ { size_t const r = ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL);
+ if (ZSTD_getErrorCode((size_t)r) != ZSTD_error_memory_allocation) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : resize context to full CCtx size : ", testNb++);
+ staticCCtx = ZSTD_initStaticCStream(staticCCtxBuffer, staticCCtxSize);
+ DISPLAYLEVEL(4, "staticCCtxBuffer = %p, staticCCtx = %p , ", staticCCtxBuffer, (void*)staticCCtx);
+ if (staticCCtx == NULL) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress large input with static CCtx : ", testNb++);
+ CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n",
+ (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : compress small input often enough to trigger context reduce : ", testNb++);
+ { int nbc;
+ assert(staticCCtxSize > smallCCtxSize * ZSTD_WORKSPACETOOLARGE_FACTOR); /* ensure size down scenario */
+ assert(CNBuffSize > smallInSize + ZSTD_WORKSPACETOOLARGE_MAXDURATION + 3);
+ for (nbc=0; nbc<ZSTD_WORKSPACETOOLARGE_MAXDURATION+2; nbc++) {
+ CHECK_Z(ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ (char*)CNBuffer + nbc, smallInSize,
+ STATIC_CCTX_LEVEL) );
+ } }
+ DISPLAYLEVEL(3, "OK \n")
+
+ DISPLAYLEVEL(3, "test%3i : init CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL);
+ CHECK_Z( ZSTD_compressBegin(staticCCtx, STATIC_CCTX_LEVEL) );
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compression again with static CCtx : ", testNb++);
+ CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n",
+ (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : simple decompression test with static DCtx : ", testNb++);
+ { size_t const r = ZSTD_decompressDCtx(staticDCtx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
+ if (memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : init CCtx for too large level (must fail) : ", testNb++);
+ { size_t const r = ZSTD_compressBegin(staticCCtx, ZSTD_maxCLevel());
+ if (!ZSTD_isError(r)) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : init CCtx for small level %u (should work again) : ", testNb++, 1);
+ CHECK_Z( ZSTD_compressBegin(staticCCtx, 1) );
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : use CStream on CCtx-sized static context (should fail) : ", testNb++);
+ CHECK_Z( ZSTD_initCStream(staticCCtx, STATIC_CCTX_LEVEL) ); /* note : doesn't allocate */
+ { ZSTD_outBuffer output = { compressedBuffer, compressedBufferSize, 0 };
+ ZSTD_inBuffer input = { CNBuffer, CNBuffSize, 0 };
+ size_t const r = ZSTD_compressStream(staticCCtx, &output, &input); /* now allocates, should fail */
+ if (!ZSTD_isError(r)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : resize context to CStream size, then stream compress : ", testNb++);
+ staticCCtx = ZSTD_initStaticCStream(staticCCtxBuffer, staticCStreamSize);
+ assert(staticCCtx != NULL);
+ CHECK_Z( ZSTD_initCStream(staticCCtx, STATIC_CCTX_LEVEL) ); /* note : doesn't allocate */
+ { ZSTD_outBuffer output = { compressedBuffer, compressedBufferSize, 0 };
+ ZSTD_inBuffer input = { CNBuffer, CNBuffSize, 0 };
+ CHECK_Z( ZSTD_compressStream(staticCCtx, &output, &input) );
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : CStream for small level %u : ", testNb++, 1);
+ CHECK_Z( ZSTD_initCStream(staticCCtx, 1) ); /* note : doesn't allocate */
+ { ZSTD_outBuffer output = { compressedBuffer, compressedBufferSize, 0 };
+ ZSTD_inBuffer input = { CNBuffer, CNBuffSize, 0 };
+ CHECK_Z( ZSTD_compressStream(staticCCtx, &output, &input) );
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : init static CStream with dictionary (should fail) : ", testNb++);
+ { size_t const r = ZSTD_initCStream_usingDict(staticCCtx, CNBuffer, 64 KB, 1);
+ if (!ZSTD_isError(r)) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : use DStream on DCtx-sized static context (should fail) : ", testNb++);
+ CHECK_Z( ZSTD_initDStream(staticDCtx) );
+ { ZSTD_outBuffer output = { decodedBuffer, CNBuffSize, 0 };
+ ZSTD_inBuffer input = { compressedBuffer, ZSTD_FRAMEHEADERSIZE_MAX+1, 0 };
+ size_t const r = ZSTD_decompressStream(staticDCtx, &output, &input);
+ if (!ZSTD_isError(r)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : test estimation functions with default cctx params : ", testNb++);
+ {
+ // Test ZSTD_estimateCCtxSize_usingCCtxParams
+ {
+ ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
+ size_t const cctxSizeDefault = ZSTD_estimateCCtxSize_usingCCtxParams(params);
+ staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, cctxSizeDefault);
+ CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, 3));
+
+ {
+ size_t const r = ZSTD_decompressDCtx(staticDCtx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error;
+ if (memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error;
+ }
+ ZSTD_freeCCtxParams(params);
+ }
+
+ // Test ZSTD_estimateCStreamSize_usingCCtxParams
+ {
+ ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
+ size_t const cctxSizeDefault = ZSTD_estimateCStreamSize_usingCCtxParams(params);
+ staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, cctxSizeDefault);
+ CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, 3) );
+
+ {
+ size_t const r = ZSTD_decompressDCtx(staticDCtx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error;
+ if (memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error;
+ }
+ ZSTD_freeCCtxParams(params);
+ }
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : test estimation functions with maxBlockSize = 0 : ", testNb++);
+ {
+ // Test ZSTD_estimateCCtxSize_usingCCtxParams
+ {
+ ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
+ size_t cctxSizeDefault;
+ CHECK_Z(ZSTD_CCtxParams_setParameter(params, ZSTD_c_maxBlockSize, 0));
+ cctxSizeDefault = ZSTD_estimateCCtxSize_usingCCtxParams(params);
+ staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, cctxSizeDefault);
+ CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, 3) );
+
+ {
+ size_t const r = ZSTD_decompressDCtx(staticDCtx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error;
+ if (memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error;
+ }
+ ZSTD_freeCCtxParams(params);
+ }
+
+ // Test ZSTD_estimateCStreamSize_usingCCtxParams
+ {
+ ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
+ size_t cctxSizeDefault;
+ CHECK_Z(ZSTD_CCtxParams_setParameter(params, ZSTD_c_maxBlockSize, 0));
+ cctxSizeDefault = ZSTD_estimateCStreamSize_usingCCtxParams(params);
+ staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, cctxSizeDefault);
+ CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, 3) );
+
+ {
+ size_t const r = ZSTD_decompressDCtx(staticDCtx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error;
+ if (memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error;
+ }
+ ZSTD_freeCCtxParams(params);
+ }
+ }
+ DISPLAYLEVEL(3, "OK \n");
+ }
+ free(staticCCtxBuffer);
+ free(staticDCtxBuffer);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : Static context sizes for negative levels : ", testNb++);
+ { size_t const cctxSizeN1 = ZSTD_estimateCCtxSize(-1);
+ size_t const cctxSizeP1 = ZSTD_estimateCCtxSize(1);
+ size_t const cstreamSizeN1 = ZSTD_estimateCStreamSize(-1);
+ size_t const cstreamSizeP1 = ZSTD_estimateCStreamSize(1);
+
+ if (!(0 < cctxSizeN1 && cctxSizeN1 <= cctxSizeP1)) goto _output_error;
+ if (!(0 < cstreamSizeN1 && cstreamSizeN1 <= cstreamSizeP1)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+
+ /* ZSTDMT simple MT compression test */
+ DISPLAYLEVEL(3, "test%3i : create ZSTDMT CCtx : ", testNb++);
+ { ZSTD_CCtx* const mtctx = ZSTD_createCCtx();
+ if (mtctx==NULL) {
+ DISPLAY("mtctx : not enough memory, aborting \n");
+ testResult = 1;
+ goto _end;
+ }
+ CHECK_Z( ZSTD_CCtx_setParameter(mtctx, ZSTD_c_nbWorkers, 2) );
+ CHECK_Z( ZSTD_CCtx_setParameter(mtctx, ZSTD_c_compressionLevel, 1) );
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3u : compress %u bytes with 2 threads : ", testNb++, (unsigned)CNBuffSize);
+ CHECK_VAR(cSize, ZSTD_compress2(mtctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : decompressed size test : ", testNb++);
+ { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
+ if (rSize != CNBuffSize) {
+ DISPLAY("ZSTD_getFrameContentSize incorrect : %u != %u \n", (unsigned)rSize, (unsigned)CNBuffSize);
+ goto _output_error;
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
+ { size_t u;
+ for (u=0; u<CNBuffSize; u++) {
+ if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress -T2 with checksum : ", testNb++);
+ CHECK_Z( ZSTD_CCtx_setParameter(mtctx, ZSTD_c_checksumFlag, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(mtctx, ZSTD_c_contentSizeFlag, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(mtctx, ZSTD_c_overlapLog, 3) );
+ CHECK_VAR(cSize, ZSTD_compress2(mtctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (r != CNBuffSize) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ ZSTD_freeCCtx(mtctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3u : compress empty string and decompress with small window log : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ char out[32];
+ if (cctx == NULL || dctx == NULL) goto _output_error;
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0) );
+ CHECK_VAR(cSize, ZSTD_compress2(cctx, out, sizeof(out), NULL, 0) );
+ DISPLAYLEVEL(3, "OK (%u bytes)\n", (unsigned)cSize);
+
+ CHECK_Z( ZSTD_DCtx_setParameter(dctx, ZSTD_d_windowLogMax, 10) );
+ { char const* outPtr = out;
+ ZSTD_inBuffer inBuffer = { outPtr, cSize, 0 };
+ ZSTD_outBuffer outBuffer = { NULL, 0, 0 };
+ size_t dSize;
+ CHECK_VAR(dSize, ZSTD_decompressStream(dctx, &outBuffer, &inBuffer) );
+ if (dSize != 0) goto _output_error;
+ }
+
+ ZSTD_freeDCtx(dctx);
+ ZSTD_freeCCtx(cctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : compress with block splitting : ", testNb++)
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_useBlockSplitter, ZSTD_ps_enable) );
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize);
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress -T2 with/without literals compression : ", testNb++)
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ size_t cSize1, cSize2;
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2) );
+ cSize1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize1);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_literalCompressionMode, ZSTD_ps_disable) );
+ cSize2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize2);
+ CHECK_LT(cSize1, cSize2);
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Multithreaded ZSTD_compress2() with rsyncable : ", testNb++)
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ /* Set rsyncable and don't give the ZSTD_compressBound(CNBuffSize) so
+ * ZSTDMT is forced to not take the shortcut.
+ */
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_rsyncable, 1) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize - 1, CNBuffer, CNBuffSize) );
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : setting multithreaded parameters : ", testNb++)
+ { ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
+ int const jobSize = 512 KB;
+ int value;
+ /* Check that the overlap log and job size are unset. */
+ CHECK_Z( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) );
+ CHECK_EQ(value, 0);
+ CHECK_Z( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) );
+ CHECK_EQ(value, 0);
+ /* Set and check the overlap log and job size. */
+ CHECK_Z( ZSTD_CCtxParams_setParameter(params, ZSTD_c_overlapLog, 5) );
+ CHECK_Z( ZSTD_CCtxParams_setParameter(params, ZSTD_c_jobSize, jobSize) );
+ CHECK_Z( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) );
+ CHECK_EQ(value, 5);
+ CHECK_Z( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) );
+ CHECK_EQ(value, jobSize);
+ /* Set the number of workers and check the overlap log and job size. */
+ CHECK_Z( ZSTD_CCtxParams_setParameter(params, ZSTD_c_nbWorkers, 2) );
+ CHECK_Z( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) );
+ CHECK_EQ(value, 5);
+ CHECK_Z( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) );
+ CHECK_EQ(value, jobSize);
+ ZSTD_freeCCtxParams(params);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Simple API multiframe test */
+ DISPLAYLEVEL(3, "test%3i : compress multiple frames : ", testNb++);
+ { size_t off = 0;
+ int i;
+ int const segs = 4;
+ /* only use the first half so we don't push against size limit of compressedBuffer */
+ size_t const segSize = (CNBuffSize / 2) / segs;
+
+ const U32 skipLen = 129 KB;
+ char* const skipBuff = (char*)malloc(skipLen);
+ assert(skipBuff != NULL);
+ memset(skipBuff, 0, skipLen);
+ for (i = 0; i < segs; i++) {
+ CHECK_NEWV(r, ZSTD_compress(
+ (BYTE*)compressedBuffer + off, CNBuffSize - off,
+ (BYTE*)CNBuffer + segSize * (size_t)i, segSize,
+ 5) );
+ off += r;
+ if (i == segs/2) {
+ /* insert skippable frame */
+ size_t const skippableSize =
+ ZSTD_writeSkippableFrame((BYTE*)compressedBuffer + off, compressedBufferSize,
+ skipBuff, skipLen, seed % 15);
+ CHECK_Z(skippableSize);
+ off += skippableSize;
+ }
+ }
+ cSize = off;
+ free(skipBuff);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : get decompressed size of multiple frames : ", testNb++);
+ { unsigned long long const r = ZSTD_findDecompressedSize(compressedBuffer, cSize);
+ if (r != CNBuffSize / 2) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : get tight decompressed bound of multiple frames : ", testNb++);
+ { unsigned long long const bound = ZSTD_decompressBound(compressedBuffer, cSize);
+ if (bound != CNBuffSize / 2) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress multiple frames : ", testNb++);
+ { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize));
+ if (r != CNBuffSize / 2) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
+ if (memcmp(decodedBuffer, CNBuffer, CNBuffSize / 2) != 0) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Simple API skippable frame test */
+ DISPLAYLEVEL(3, "test%3i : read/write a skippable frame : ", testNb++);
+ { U32 i;
+ unsigned readMagic;
+ unsigned long long receivedSize;
+ size_t skippableSize;
+ const U32 skipLen = 129 KB;
+ char* const skipBuff = (char*)malloc(skipLen);
+ assert(skipBuff != NULL);
+ for (i = 0; i < skipLen; i++)
+ skipBuff[i] = (char) ((seed + i) % 256);
+ skippableSize = ZSTD_writeSkippableFrame(
+ compressedBuffer, compressedBufferSize,
+ skipBuff, skipLen, seed % 15);
+ CHECK_Z(skippableSize);
+ CHECK_EQ(1, ZSTD_isSkippableFrame(compressedBuffer, skippableSize));
+ receivedSize = ZSTD_readSkippableFrame(decodedBuffer, CNBuffSize, &readMagic, compressedBuffer, skippableSize);
+ CHECK_EQ(skippableSize, receivedSize + ZSTD_SKIPPABLEHEADERSIZE);
+ CHECK_EQ(seed % 15, readMagic);
+ if (memcmp(decodedBuffer, skipBuff, skipLen) != 0) goto _output_error;
+
+ free(skipBuff);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : read/write an empty skippable frame : ", testNb++);
+ {
+ unsigned readMagic;
+ unsigned long long receivedSize;
+ size_t skippableSize;
+ skippableSize = ZSTD_writeSkippableFrame(
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, 0, seed % 15);
+ CHECK_EQ(ZSTD_SKIPPABLEHEADERSIZE, skippableSize);
+ CHECK_EQ(1, ZSTD_isSkippableFrame(compressedBuffer, skippableSize));
+ receivedSize = ZSTD_readSkippableFrame(NULL, 0, &readMagic, compressedBuffer, skippableSize);
+ CHECK_EQ(skippableSize, receivedSize + ZSTD_SKIPPABLEHEADERSIZE);
+ CHECK_EQ(seed % 15, readMagic);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Dictionary and CCtx Duplication tests */
+ { ZSTD_CCtx* const ctxOrig = ZSTD_createCCtx();
+ ZSTD_CCtx* const ctxDuplicated = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ static const size_t dictSize = 551;
+ assert(dctx != NULL); assert(ctxOrig != NULL); assert(ctxDuplicated != NULL);
+
+ DISPLAYLEVEL(3, "test%3i : copy context too soon : ", testNb++);
+ { size_t const copyResult = ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0);
+ if (!ZSTD_isError(copyResult)) goto _output_error; } /* error must be detected */
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : load dictionary into context : ", testNb++);
+ CHECK_Z( ZSTD_compressBegin_usingDict(ctxOrig, CNBuffer, dictSize, 2) );
+ CHECK_Z( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0) ); /* Begin_usingDict implies unknown srcSize, so match that */
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress with flat dictionary : ", testNb++);
+ cSize = 0;
+ CHECKPLUS(r, ZSTD_compressEnd(ctxOrig,
+ compressedBuffer, compressedBufferSize,
+ (const char*)CNBuffer + dictSize, CNBuffSize - dictSize),
+ cSize += r);
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : frame built with flat dictionary should be decompressible : ", testNb++);
+ CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ CNBuffer, dictSize),
+ if (r != CNBuffSize - dictSize) goto _output_error);
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress with duplicated context : ", testNb++);
+ { size_t const cSizeOrig = cSize;
+ cSize = 0;
+ CHECKPLUS(r, ZSTD_compressEnd(ctxDuplicated,
+ compressedBuffer, compressedBufferSize,
+ (const char*)CNBuffer + dictSize, CNBuffSize - dictSize),
+ cSize += r);
+ if (cSize != cSizeOrig) goto _output_error; /* should be identical ==> same size */
+ }
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : frame built with duplicated context should be decompressible : ", testNb++);
+ CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ CNBuffer, dictSize),
+ if (r != CNBuffSize - dictSize) goto _output_error);
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : decompress with DDict : ", testNb++);
+ { ZSTD_DDict* const ddict = ZSTD_createDDict(CNBuffer, dictSize);
+ size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict);
+ if (r != CNBuffSize - dictSize) goto _output_error;
+ DISPLAYLEVEL(3, "OK (size of DDict : %u) \n", (unsigned)ZSTD_sizeof_DDict(ddict));
+ ZSTD_freeDDict(ddict);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : decompress with static DDict : ", testNb++);
+ { size_t const ddictBufferSize = ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy);
+ void* const ddictBuffer = malloc(ddictBufferSize);
+ if (ddictBuffer == NULL) goto _output_error;
+ { const ZSTD_DDict* const ddict = ZSTD_initStaticDDict(ddictBuffer, ddictBufferSize, CNBuffer, dictSize, ZSTD_dlm_byCopy, ZSTD_dct_auto);
+ size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict);
+ if (r != CNBuffSize - dictSize) goto _output_error;
+ }
+ free(ddictBuffer);
+ DISPLAYLEVEL(3, "OK (size of static DDict : %u) \n", (unsigned)ddictBufferSize);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : check content size on duplicated context : ", testNb++);
+ { size_t const testSize = CNBuffSize / 3;
+ CHECK_Z( ZSTD_compressBegin(ctxOrig, ZSTD_defaultCLevel()) );
+ CHECK_Z( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, testSize) );
+
+ CHECK_VAR(cSize, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, ZSTD_compressBound(testSize),
+ (const char*)CNBuffer + dictSize, testSize) );
+ { ZSTD_frameHeader zfh;
+ if (ZSTD_getFrameHeader(&zfh, compressedBuffer, cSize)) goto _output_error;
+ if ((zfh.frameContentSize != testSize) && (zfh.frameContentSize != 0)) goto _output_error;
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Note : these tests should be replaced by proper regression tests,
+ * but existing ones do not focus on small data + dictionary + all levels.
+ */
+ if ((int)(compressibility * 100 + 0.1) == FUZ_compressibility_default) { /* test only valid with known input */
+ size_t const flatdictSize = 22 KB;
+ size_t const contentSize = 9 KB;
+ const void* const dict = (const char*)CNBuffer;
+ const void* const contentStart = (const char*)dict + flatdictSize;
+ /* These upper bounds are generally within a few bytes of the compressed size */
+ size_t target_nodict_cSize[22+1] = { 3840, 3770, 3870, 3830, 3770,
+ 3770, 3770, 3770, 3750, 3750,
+ 3742, 3675, 3674, 3665, 3664,
+ 3663, 3662, 3661, 3660, 3660,
+ 3660, 3660, 3660 };
+ size_t const target_wdict_cSize[22+1] = { 2830, 2896, 2893, 2820, 2940,
+ 2950, 2950, 2925, 2900, 2892,
+ 2910, 2910, 2910, 2780, 2775,
+ 2765, 2760, 2755, 2754, 2753,
+ 2753, 2753, 2753 };
+ int l = 1;
+ int const maxLevel = ZSTD_maxCLevel();
+ /* clevels with strategies that support rowhash on small inputs */
+ int rowLevel = 4;
+ int const rowLevelEnd = 8;
+
+ DISPLAYLEVEL(3, "test%3i : flat-dictionary efficiency test : \n", testNb++);
+ assert(maxLevel == 22);
+ RDG_genBuffer(CNBuffer, flatdictSize + contentSize, compressibility, 0., seed);
+ DISPLAYLEVEL(4, "content hash : %016llx; dict hash : %016llx \n",
+ (unsigned long long)XXH64(contentStart, contentSize, 0),
+ (unsigned long long)XXH64(dict, flatdictSize, 0));
+
+ for ( ; l <= maxLevel; l++) {
+ size_t const nodict_cSize = ZSTD_compress(compressedBuffer, compressedBufferSize,
+ contentStart, contentSize, l);
+ if (nodict_cSize > target_nodict_cSize[l]) {
+ DISPLAYLEVEL(1, "error : compression at level %i worse than expected (%u > %u) \n",
+ l, (unsigned)nodict_cSize, (unsigned)target_nodict_cSize[l]);
+ goto _output_error;
+ }
+ DISPLAYLEVEL(4, "level %i : max expected %u >= reached %u \n",
+ l, (unsigned)target_nodict_cSize[l], (unsigned)nodict_cSize);
+ }
+ for ( l=1 ; l <= maxLevel; l++) {
+ size_t const wdict_cSize = ZSTD_compress_usingDict(ctxOrig,
+ compressedBuffer, compressedBufferSize,
+ contentStart, contentSize,
+ dict, flatdictSize,
+ l);
+ if (wdict_cSize > target_wdict_cSize[l]) {
+ DISPLAYLEVEL(1, "error : compression with dictionary at level %i worse than expected (%u > %u) \n",
+ l, (unsigned)wdict_cSize, (unsigned)target_wdict_cSize[l]);
+ goto _output_error;
+ }
+ DISPLAYLEVEL(4, "level %i with dictionary : max expected %u >= reached %u \n",
+ l, (unsigned)target_wdict_cSize[l], (unsigned)wdict_cSize);
+ }
+ /* Compression with ZSTD_compress2 and row match finder force enabled.
+ * Give some slack for force-enabled row matchfinder since we're on a small input (9KB)
+ */
+ for ( ; rowLevel <= rowLevelEnd; ++rowLevel) target_nodict_cSize[rowLevel] += 5;
+ for (l=1 ; l <= maxLevel; l++) {
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t nodict_cSize;
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, l);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_useRowMatchFinder, ZSTD_ps_enable);
+ nodict_cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize,
+ contentStart, contentSize);
+ if (nodict_cSize > target_nodict_cSize[l]) {
+ DISPLAYLEVEL(1, "error : compression with compress2 at level %i worse than expected (%u > %u) \n",
+ l, (unsigned)nodict_cSize, (unsigned)target_nodict_cSize[l]);
+ ZSTD_freeCCtx(cctx);
+ goto _output_error;
+ }
+ DISPLAYLEVEL(4, "level %i with compress2 : max expected %u >= reached %u \n",
+ l, (unsigned)target_nodict_cSize[l], (unsigned)nodict_cSize);
+ ZSTD_freeCCtx(cctx);
+ }
+ /* Dict compression with DMS */
+ for ( l=1 ; l <= maxLevel; l++) {
+ size_t wdict_cSize;
+ CHECK_Z( ZSTD_CCtx_loadDictionary(ctxOrig, dict, flatdictSize) );
+ CHECK_Z( ZSTD_CCtx_setParameter(ctxOrig, ZSTD_c_compressionLevel, l) );
+ CHECK_Z( ZSTD_CCtx_setParameter(ctxOrig, ZSTD_c_enableDedicatedDictSearch, 0) );
+ CHECK_Z( ZSTD_CCtx_setParameter(ctxOrig, ZSTD_c_forceAttachDict, ZSTD_dictForceAttach) );
+ CHECK_Z( ZSTD_CCtx_setParameter(ctxOrig, ZSTD_c_prefetchCDictTables, seed % 3) );
+ wdict_cSize = ZSTD_compress2(ctxOrig, compressedBuffer, compressedBufferSize, contentStart, contentSize);
+ if (wdict_cSize > target_wdict_cSize[l]) {
+ DISPLAYLEVEL(1, "error : compression with dictionary and compress2 at level %i worse than expected (%u > %u) \n",
+ l, (unsigned)wdict_cSize, (unsigned)target_wdict_cSize[l]);
+ goto _output_error;
+ }
+ DISPLAYLEVEL(4, "level %i with dictionary and compress2 : max expected %u >= reached %u \n",
+ l, (unsigned)target_wdict_cSize[l], (unsigned)wdict_cSize);
+ }
+
+ DISPLAYLEVEL(4, "compression efficiency tests OK \n");
+ }
+
+ ZSTD_freeCCtx(ctxOrig);
+ ZSTD_freeCCtx(ctxDuplicated);
+ ZSTD_freeDCtx(dctx);
+ }
+
+ /* Dictionary and dictBuilder tests */
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t const dictBufferCapacity = 16 KB;
+ void* const dictBuffer = malloc(dictBufferCapacity);
+ size_t const totalSampleSize = 1 MB;
+ size_t const sampleUnitSize = 8 KB;
+ U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
+ size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
+ size_t dictSize;
+ U32 dictID;
+ size_t dictHeaderSize;
+ size_t dictBufferFixedSize = 144;
+ unsigned char const dictBufferFixed[144] = {0x37, 0xa4, 0x30, 0xec, 0x63, 0x00, 0x00, 0x00, 0x08, 0x10, 0x00, 0x1f,
+ 0x0f, 0x00, 0x28, 0xe5, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x80, 0x0f, 0x9e, 0x0f, 0x00, 0x00, 0x24, 0x40, 0x80, 0x00, 0x01,
+ 0x02, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0xde, 0x08,
+ 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+ 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+ 0x08, 0x08, 0x08, 0x08, 0xbc, 0xe1, 0x4b, 0x92, 0x0e, 0xb4, 0x7b, 0x18,
+ 0x86, 0x61, 0x18, 0xc6, 0x18, 0x63, 0x8c, 0x31, 0xc6, 0x18, 0x63, 0x8c,
+ 0x31, 0x66, 0x66, 0x66, 0x66, 0xb6, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x04,
+ 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x20, 0x73, 0x6f, 0x64, 0x61,
+ 0x6c, 0x65, 0x73, 0x20, 0x74, 0x6f, 0x72, 0x74, 0x6f, 0x72, 0x20, 0x65,
+ 0x6c, 0x65, 0x69, 0x66, 0x65, 0x6e, 0x64, 0x2e, 0x20, 0x41, 0x6c, 0x69};
+
+ if (dictBuffer==NULL || samplesSizes==NULL) {
+ free(dictBuffer);
+ free(samplesSizes);
+ goto _output_error;
+ }
+
+ DISPLAYLEVEL(3, "test%3i : dictBuilder on cyclic data : ", testNb++);
+ assert(compressedBufferSize >= totalSampleSize);
+ { U32 u; for (u=0; u<totalSampleSize; u++) ((BYTE*)decodedBuffer)[u] = (BYTE)u; }
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ { size_t const sDictSize = ZDICT_trainFromBuffer(dictBuffer, dictBufferCapacity,
+ decodedBuffer, samplesSizes, nbSamples);
+ if (ZDICT_isError(sDictSize)) goto _output_error;
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)sDictSize);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : dictBuilder : ", testNb++);
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ dictSize = ZDICT_trainFromBuffer(dictBuffer, dictBufferCapacity,
+ CNBuffer, samplesSizes, nbSamples);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
+
+ DISPLAYLEVEL(3, "test%3i : Multithreaded COVER dictBuilder : ", testNb++);
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ { ZDICT_cover_params_t coverParams;
+ memset(&coverParams, 0, sizeof(coverParams));
+ coverParams.steps = 8;
+ coverParams.nbThreads = 4;
+ dictSize = ZDICT_optimizeTrainFromBuffer_cover(
+ dictBuffer, dictBufferCapacity,
+ CNBuffer, samplesSizes, nbSamples/8, /* less samples for faster tests */
+ &coverParams);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
+
+ DISPLAYLEVEL(3, "test%3i : COVER dictBuilder with shrinkDict: ", testNb++);
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ { ZDICT_cover_params_t coverParams;
+ memset(&coverParams, 0, sizeof(coverParams));
+ coverParams.steps = 8;
+ coverParams.nbThreads = 4;
+ coverParams.shrinkDict = 1;
+ coverParams.shrinkDictMaxRegression = 1;
+ dictSize = ZDICT_optimizeTrainFromBuffer_cover(
+ dictBuffer, dictBufferCapacity,
+ CNBuffer, samplesSizes, nbSamples/8, /* less samples for faster tests */
+ &coverParams);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
+
+ DISPLAYLEVEL(3, "test%3i : Multithreaded FASTCOVER dictBuilder : ", testNb++);
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ { ZDICT_fastCover_params_t fastCoverParams;
+ memset(&fastCoverParams, 0, sizeof(fastCoverParams));
+ fastCoverParams.steps = 8;
+ fastCoverParams.nbThreads = 4;
+ dictSize = ZDICT_optimizeTrainFromBuffer_fastCover(
+ dictBuffer, dictBufferCapacity,
+ CNBuffer, samplesSizes, nbSamples,
+ &fastCoverParams);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
+
+ DISPLAYLEVEL(3, "test%3i : FASTCOVER dictBuilder with shrinkDict: ", testNb++);
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ { ZDICT_fastCover_params_t fastCoverParams;
+ memset(&fastCoverParams, 0, sizeof(fastCoverParams));
+ fastCoverParams.steps = 8;
+ fastCoverParams.nbThreads = 4;
+ fastCoverParams.shrinkDict = 1;
+ fastCoverParams.shrinkDictMaxRegression = 1;
+ dictSize = ZDICT_optimizeTrainFromBuffer_fastCover(
+ dictBuffer, dictBufferCapacity,
+ CNBuffer, samplesSizes, nbSamples,
+ &fastCoverParams);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
+
+ DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++);
+ dictID = ZDICT_getDictID(dictBuffer, dictSize);
+ if (dictID==0) goto _output_error;
+ DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID);
+
+ DISPLAYLEVEL(3, "test%3i : check dict header size no error : ", testNb++);
+ dictHeaderSize = ZDICT_getDictHeaderSize(dictBuffer, dictSize);
+ if (dictHeaderSize==0) goto _output_error;
+ DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictHeaderSize);
+
+ DISPLAYLEVEL(3, "test%3i : check dict header size correctness : ", testNb++);
+ { dictHeaderSize = ZDICT_getDictHeaderSize(dictBufferFixed, dictBufferFixedSize);
+ if (dictHeaderSize != 115) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictHeaderSize);
+
+ DISPLAYLEVEL(3, "test%3i : compress with dictionary : ", testNb++);
+ cSize = ZSTD_compress_usingDict(cctx, compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize,
+ dictBuffer, dictSize, 4);
+ if (ZSTD_isError(cSize)) goto _output_error;
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : retrieve dictID from dictionary : ", testNb++);
+ { U32 const did = ZSTD_getDictID_fromDict(dictBuffer, dictSize);
+ if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : retrieve dictID from frame : ", testNb++);
+ { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
+ if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : frame built with dictionary should be decompressible : ", testNb++);
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
+ CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ dictBuffer, dictSize),
+ if (r != CNBuffSize) goto _output_error);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : estimate CDict size : ", testNb++);
+ { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
+ size_t const estimatedSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byRef);
+ DISPLAYLEVEL(3, "OK : %u \n", (unsigned)estimatedSize);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : compress with CDict ", testNb++);
+ { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
+ ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize,
+ ZSTD_dlm_byRef, ZSTD_dct_auto,
+ cParams, ZSTD_defaultCMem);
+ assert(cdict != NULL);
+ DISPLAYLEVEL(3, "(size : %u) : ", (unsigned)ZSTD_sizeof_CDict(cdict));
+ assert(ZSTD_getDictID_fromDict(dictBuffer, dictSize) == ZSTD_getDictID_fromCDict(cdict));
+ cSize = ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize, cdict);
+ ZSTD_freeCDict(cdict);
+ if (ZSTD_isError(cSize)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : retrieve dictID from frame : ", testNb++);
+ { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
+ if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : frame built with dictionary should be decompressible : ", testNb++);
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
+ CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ dictBuffer, dictSize),
+ if (r != CNBuffSize) goto _output_error);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress with static CDict : ", testNb++);
+ { int const maxLevel = ZSTD_maxCLevel();
+ int level;
+ for (level = 1; level <= maxLevel; ++level) {
+ ZSTD_compressionParameters const cParams = ZSTD_getCParams(level, CNBuffSize, dictSize);
+ size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy);
+ void* const cdictBuffer = malloc(cdictSize);
+ if (cdictBuffer==NULL) goto _output_error;
+ { const ZSTD_CDict* const cdict = ZSTD_initStaticCDict(
+ cdictBuffer, cdictSize,
+ dictBuffer, dictSize,
+ ZSTD_dlm_byCopy, ZSTD_dct_auto,
+ cParams);
+ if (cdict == NULL) {
+ DISPLAY("ZSTD_initStaticCDict failed ");
+ goto _output_error;
+ }
+ cSize = ZSTD_compress_usingCDict(cctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, MIN(10 KB, CNBuffSize), cdict);
+ if (ZSTD_isError(cSize)) {
+ DISPLAY("ZSTD_compress_usingCDict failed ");
+ goto _output_error;
+ } }
+ free(cdictBuffer);
+ } }
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingCDict_advanced, no contentSize, no dictID : ", testNb++);
+ { ZSTD_frameParameters const fParams = { 0 /* frameSize */, 1 /* checksum */, 1 /* noDictID*/ };
+ ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
+ ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, cParams, ZSTD_defaultCMem);
+ assert(cdict != NULL);
+ cSize = ZSTD_compress_usingCDict_advanced(cctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize,
+ cdict, fParams);
+ ZSTD_freeCDict(cdict);
+ if (ZSTD_isError(cSize)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : try retrieving contentSize from frame : ", testNb++);
+ { U64 const contentSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
+ if (contentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK (unknown)\n");
+
+ DISPLAYLEVEL(3, "test%3i : frame built without dictID should be decompressible : ", testNb++);
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ assert(dctx != NULL);
+ CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ dictBuffer, dictSize),
+ if (r != CNBuffSize) goto _output_error);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress_advanced, no dictID : ", testNb++);
+ { ZSTD_parameters p = ZSTD_getParams(3, CNBuffSize, dictSize);
+ p.fParams.noDictIDFlag = 1;
+ cSize = ZSTD_compress_advanced(cctx, compressedBuffer, compressedBufferSize,
+ CNBuffer, CNBuffSize,
+ dictBuffer, dictSize, p);
+ if (ZSTD_isError(cSize)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
+
+ DISPLAYLEVEL(3, "test%3i : frame built without dictID should be decompressible : ", testNb++);
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
+ CHECKPLUS(r, ZSTD_decompress_usingDict(dctx,
+ decodedBuffer, CNBuffSize,
+ compressedBuffer, cSize,
+ dictBuffer, dictSize),
+ if (r != CNBuffSize) goto _output_error);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : dictionary containing only header should return error : ", testNb++);
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ assert(dctx != NULL);
+ { const size_t ret = ZSTD_decompress_usingDict(
+ dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize,
+ "\x37\xa4\x30\xec\x11\x22\x33\x44", 8);
+ if (ZSTD_getErrorCode(ret) != ZSTD_error_dictionary_corrupted)
+ goto _output_error;
+ }
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3d : bufferless api with cdict : ", testNb++);
+ { ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ ZSTD_frameParameters const fParams = { 0, 1, 0 };
+ size_t cBlockSize;
+ cSize = 0;
+ CHECK_Z(ZSTD_compressBegin_usingCDict_advanced(cctx, cdict, fParams, ZSTD_CONTENTSIZE_UNKNOWN));
+ cBlockSize = ZSTD_compressContinue(cctx, (char*)compressedBuffer + cSize, compressedBufferSize - cSize, CNBuffer, 1000);
+ CHECK_Z(cBlockSize);
+ cSize += cBlockSize;
+ cBlockSize = ZSTD_compressEnd(cctx, (char*)compressedBuffer + cSize, compressedBufferSize - cSize, (char const*)CNBuffer + 2000, 1000);
+ CHECK_Z(cBlockSize);
+ cSize += cBlockSize;
+
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dictBuffer, dictSize));
+
+ ZSTD_freeCDict(cdict);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Building cdict w/ ZSTD_dct_fullDict on a good dictionary : ", testNb++);
+ { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
+ ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem);
+ if (cdict==NULL) goto _output_error;
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Building cdict w/ ZSTD_dct_fullDict on a rawContent (must fail) : ", testNb++);
+ { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize);
+ ZSTD_CDict* const cdict = ZSTD_createCDict_advanced((const char*)dictBuffer+1, dictSize-1, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem);
+ if (cdict!=NULL) goto _output_error;
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ { char* rawDictBuffer = (char*)malloc(dictSize);
+ assert(rawDictBuffer);
+ memcpy(rawDictBuffer, (char*)dictBuffer + 2, dictSize - 2);
+ memset(rawDictBuffer + dictSize - 2, 0, 2);
+ MEM_writeLE32((char*)rawDictBuffer, ZSTD_MAGIC_DICTIONARY);
+
+ DISPLAYLEVEL(3, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dct_auto should fail : ", testNb++);
+ {
+ size_t ret;
+ /* Either operation is allowed to fail, but one must fail. */
+ ret = ZSTD_CCtx_loadDictionary_advanced(
+ cctx, (const char*)rawDictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto);
+ if (!ZSTD_isError(ret)) {
+ ret = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100));
+ if (!ZSTD_isError(ret)) goto _output_error;
+ }
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dct_rawContent should pass : ", testNb++);
+ {
+ size_t ret;
+ ret = ZSTD_CCtx_loadDictionary_advanced(
+ cctx, (const char*)rawDictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_rawContent);
+ if (ZSTD_isError(ret)) goto _output_error;
+ ret = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100));
+ if (ZSTD_isError(ret)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Testing non-attached CDict with ZSTD_dct_rawContent : ", testNb++);
+ { size_t const srcSize = MIN(CNBuffSize, 100);
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ /* Force the dictionary to be reloaded in raw content mode */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, ZSTD_dictForceLoad));
+ CHECK_Z(ZSTD_CCtx_loadDictionary_advanced(cctx, rawDictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_rawContent));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, srcSize);
+ CHECK_Z(cSize);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ free(rawDictBuffer);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_CCtx_refCDict() then set parameters : ", testNb++);
+ { ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, dictSize, 1);
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, 12 ));
+ CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, 12 ));
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading dictionary before setting parameters is the same as loading after : ", testNb++);
+ {
+ size_t size1, size2;
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7) );
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
+ size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
+ if (ZSTD_isError(size1)) goto _output_error;
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7) );
+ size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
+ if (ZSTD_isError(size2)) goto _output_error;
+
+ if (size1 != size2) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading a dictionary clears the prefix : ", testNb++);
+ {
+ CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading a dictionary clears the cdict : ", testNb++);
+ {
+ ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
+ CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading a cdict clears the prefix : ", testNb++);
+ {
+ ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
+ CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading a cdict clears the dictionary : ", testNb++);
+ {
+ ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading a prefix clears the dictionary : ", testNb++);
+ {
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loading a prefix clears the cdict : ", testNb++);
+ {
+ ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1);
+ CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) );
+ CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) );
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loaded dictionary persists across reset session : ", testNb++);
+ {
+ size_t size1, size2;
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
+ size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
+ if (ZSTD_isError(size1)) goto _output_error;
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_only);
+ size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
+ if (ZSTD_isError(size2)) goto _output_error;
+
+ if (size1 != size2) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Loaded dictionary is cleared after resetting parameters : ", testNb++);
+ {
+ size_t size1, size2;
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) );
+ size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
+ if (ZSTD_isError(size1)) goto _output_error;
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
+ if (ZSTD_isError(size2)) goto _output_error;
+
+ if (size1 == size2) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, dictBuffer, dictSize) );
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB));
+ CHECK_Z(cSize);
+ DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with dictionary : ", testNb++);
+ {
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ size_t ret;
+ /* We should fail to decompress without a dictionary. */
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (!ZSTD_isError(ret)) goto _output_error;
+ /* We should succeed to decompress with the dictionary. */
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_DCtx_loadDictionary(dctx, dictBuffer, dictSize) );
+ CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
+ /* The dictionary should persist across calls. */
+ CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
+ /* When we reset the context the dictionary is cleared. */
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (!ZSTD_isError(ret)) goto _output_error;
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with ddict : ", testNb++);
+ {
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ ZSTD_DDict* ddict = ZSTD_createDDict(dictBuffer, dictSize);
+ size_t ret;
+ /* We should succeed to decompress with the ddict. */
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_DCtx_refDDict(dctx, ddict) );
+ CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
+ /* The ddict should persist across calls. */
+ CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
+ /* When we reset the context the ddict is cleared. */
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (!ZSTD_isError(ret)) goto _output_error;
+ ZSTD_freeDCtx(dctx);
+ ZSTD_freeDDict(ddict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with prefix : ", testNb++);
+ {
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ size_t ret;
+ /* We should succeed to decompress with the prefix. */
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_DCtx_refPrefix_advanced(dctx, dictBuffer, dictSize, ZSTD_dct_auto) );
+ CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
+ /* The prefix should be cleared after the first compression. */
+ ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (!ZSTD_isError(ret)) goto _output_error;
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_fast attach dictionary with hashLog = 25 and chainLog = 25 : ", testNb++);
+ {
+ ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams();
+ ZSTD_customMem customMem = {NULL, NULL, NULL};
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ ZSTD_CDict* cdict;
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_strategy, ZSTD_fast));
+ /* Set windowLog to 25 so hash/chain logs don't get sized down */
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_windowLog, 25));
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_hashLog, 25));
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_chainLog, 25));
+ /* Set srcSizeHint to 2^25 so hash/chain logs don't get sized down */
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_srcSizeHint, 1u << 25));
+ cdict = ZSTD_createCDict_advanced2(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, cctxParams, customMem);
+ CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, ZSTD_dictForceAttach));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dictBuffer, dictSize));
+ ZSTD_freeCDict(cdict);
+ ZSTD_freeDCtx(dctx);
+ ZSTD_freeCCtxParams(cctxParams);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_dfast attach dictionary with hashLog = 25 and chainLog = 25 : ", testNb++);
+ {
+ ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams();
+ ZSTD_customMem customMem = {NULL, NULL, NULL};
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ ZSTD_CDict* cdict;
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_strategy, ZSTD_dfast));
+ /* Set windowLog to 25 so hash/chain logs don't get sized down */
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_windowLog, 25));
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_hashLog, 25));
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_chainLog, 25));
+ /* Set srcSizeHint to 2^25 so hash/chain logs don't get sized down */
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_srcSizeHint, 1u << 25));
+ cdict = ZSTD_createCDict_advanced2(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, cctxParams, customMem);
+ CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, ZSTD_dictForceAttach));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dictBuffer, dictSize));
+ ZSTD_freeCDict(cdict);
+ ZSTD_freeDCtx(dctx);
+ ZSTD_freeCCtxParams(cctxParams);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_lazy attach dictionary with hashLog = 29 and searchLog = 4 : ", testNb++);
+ if (MEM_64bits()) {
+ ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams();
+ ZSTD_customMem customMem = {NULL, NULL, NULL};
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ ZSTD_CDict* cdict;
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_strategy, ZSTD_lazy));
+ /* Force enable row based match finder, and disable dedicated dict search. */
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_useRowMatchFinder, ZSTD_ps_enable));
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_enableDedicatedDictSearch, 0));
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_searchLog, 4));
+ /* Set windowLog to 29 so hash/chain logs don't get sized down */
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_windowLog, 29));
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_hashLog, 29));
+ /* Set srcSizeHint to 2^29 so hash/chain logs don't get sized down */
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctxParams, ZSTD_c_srcSizeHint, 1u << 29));
+ cdict = ZSTD_createCDict_advanced2(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, cctxParams, customMem);
+ CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, ZSTD_dictForceAttach));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict));
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dictBuffer, dictSize));
+ ZSTD_freeCDict(cdict);
+ ZSTD_freeDCtx(dctx);
+ ZSTD_freeCCtxParams(cctxParams);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Dictionary with non-default repcodes : ", testNb++);
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize,
+ CNBuffer, samplesSizes, nbSamples);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ /* Set all the repcodes to non-default */
+ {
+ BYTE* dictPtr = (BYTE*)dictBuffer;
+ BYTE* dictLimit = dictPtr + dictSize - 12;
+ /* Find the repcodes */
+ while (dictPtr < dictLimit &&
+ (MEM_readLE32(dictPtr) != 1 || MEM_readLE32(dictPtr + 4) != 4 ||
+ MEM_readLE32(dictPtr + 8) != 8)) {
+ ++dictPtr;
+ }
+ if (dictPtr >= dictLimit) goto _output_error;
+ MEM_writeLE32(dictPtr + 0, 10);
+ MEM_writeLE32(dictPtr + 4, 10);
+ MEM_writeLE32(dictPtr + 8, 10);
+ /* Set the last 8 bytes to 'x' */
+ memset((BYTE*)dictBuffer + dictSize - 8, 'x', 8);
+ }
+ /* The optimal parser checks all the repcodes.
+ * Make sure at least one is a match >= targetLength so that it is
+ * immediately chosen. This will make sure that the compressor and
+ * decompressor agree on at least one of the repcodes.
+ */
+ { size_t dSize;
+ BYTE data[1024];
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ ZSTD_compressionParameters const cParams = ZSTD_getCParams(19, CNBuffSize, dictSize);
+ ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize,
+ ZSTD_dlm_byRef, ZSTD_dct_auto,
+ cParams, ZSTD_defaultCMem);
+ assert(dctx != NULL); assert(cdict != NULL);
+ memset(data, 'x', sizeof(data));
+ cSize = ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize,
+ data, sizeof(data), cdict);
+ ZSTD_freeCDict(cdict);
+ if (ZSTD_isError(cSize)) { DISPLAYLEVEL(5, "Compression error %s : ", ZSTD_getErrorName(cSize)); goto _output_error; }
+ dSize = ZSTD_decompress_usingDict(dctx, decodedBuffer, sizeof(data), compressedBuffer, cSize, dictBuffer, dictSize);
+ if (ZSTD_isError(dSize)) { DISPLAYLEVEL(5, "Decompression error %s : ", ZSTD_getErrorName(dSize)); goto _output_error; }
+ if (memcmp(data, decodedBuffer, sizeof(data))) { DISPLAYLEVEL(5, "Data corruption : "); goto _output_error; }
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with multiple ddicts : ", testNb++);
+ {
+ const size_t numDicts = 128;
+ const size_t numFrames = 4;
+ size_t i;
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+ ZSTD_DDict** ddictTable = (ZSTD_DDict**)malloc(sizeof(ZSTD_DDict*)*numDicts);
+ ZSTD_CDict** cdictTable = (ZSTD_CDict**)malloc(sizeof(ZSTD_CDict*)*numDicts);
+ U32 dictIDSeed = seed;
+ /* Create new compressed buffer that will hold frames with differing dictIDs */
+ char* dictBufferMulti = (char*)malloc(sizeof(char) * dictBufferFixedSize); /* Modifiable copy of fixed full dict buffer */
+
+ ZSTD_memcpy(dictBufferMulti, dictBufferFixed, dictBufferFixedSize);
+ /* Create a bunch of DDicts with random dict IDs */
+ for (i = 0; i < numDicts; ++i) {
+ U32 currDictID = FUZ_rand(&dictIDSeed);
+ MEM_writeLE32(dictBufferMulti+ZSTD_FRAMEIDSIZE, currDictID);
+ ddictTable[i] = ZSTD_createDDict(dictBufferMulti, dictBufferFixedSize);
+ cdictTable[i] = ZSTD_createCDict(dictBufferMulti, dictBufferFixedSize, 3);
+ if (!ddictTable[i] || !cdictTable[i] || ZSTD_getDictID_fromCDict(cdictTable[i]) != ZSTD_getDictID_fromDDict(ddictTable[i])) {
+ goto _output_error;
+ }
+ }
+ /* Compress a few frames using random CDicts */
+ {
+ size_t off = 0;
+ /* only use the first half so we don't push against size limit of compressedBuffer */
+ size_t const segSize = (CNBuffSize / 2) / numFrames;
+ for (i = 0; i < numFrames; i++) {
+ size_t dictIdx = FUZ_rand(&dictIDSeed) % numDicts;
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ { CHECK_NEWV(r, ZSTD_compress_usingCDict(cctx,
+ (BYTE*)compressedBuffer + off, CNBuffSize - off,
+ (BYTE*)CNBuffer + segSize * (size_t)i, segSize,
+ cdictTable[dictIdx]));
+ off += r;
+ }
+ }
+ cSize = off;
+ }
+
+ /* We should succeed to decompression even though different dicts were used on different frames */
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ ZSTD_DCtx_setParameter(dctx, ZSTD_d_refMultipleDDicts, ZSTD_rmd_refMultipleDDicts);
+ /* Reference every single ddict we made */
+ for (i = 0; i < numDicts; ++i) {
+ CHECK_Z( ZSTD_DCtx_refDDict(dctx, ddictTable[i]));
+ }
+ CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
+ /* Streaming decompression should also work */
+ {
+ ZSTD_inBuffer in = {compressedBuffer, cSize, 0};
+ ZSTD_outBuffer out = {decodedBuffer, CNBuffSize, 0};
+ while (in.pos < in.size) {
+ CHECK_Z(ZSTD_decompressStream(dctx, &out, &in));
+ }
+ }
+ ZSTD_freeDCtx(dctx);
+ for (i = 0; i < numDicts; ++i) {
+ ZSTD_freeCDict(cdictTable[i]);
+ ZSTD_freeDDict(ddictTable[i]);
+ }
+ free(dictBufferMulti);
+ free(ddictTable);
+ free(cdictTable);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ ZSTD_freeCCtx(cctx);
+ free(dictBuffer);
+ free(samplesSizes);
+ }
+
+ /* COVER dictionary builder tests */
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t dictSize = 16 KB;
+ size_t optDictSize = dictSize;
+ void* dictBuffer = malloc(dictSize);
+ size_t const totalSampleSize = 1 MB;
+ size_t const sampleUnitSize = 8 KB;
+ U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
+ size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
+ U32 seed32 = seed;
+ ZDICT_cover_params_t params;
+ U32 dictID;
+
+ if (dictBuffer==NULL || samplesSizes==NULL) {
+ free(dictBuffer);
+ free(samplesSizes);
+ goto _output_error;
+ }
+
+ DISPLAYLEVEL(3, "test%3i : ZDICT_trainFromBuffer_cover : ", testNb++);
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ memset(¶ms, 0, sizeof(params));
+ params.d = 1 + (FUZ_rand(&seed32) % 16);
+ params.k = params.d + (FUZ_rand(&seed32) % 256);
+ dictSize = ZDICT_trainFromBuffer_cover(dictBuffer, dictSize,
+ CNBuffer, samplesSizes, nbSamples,
+ params);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize);
+
+ DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++);
+ dictID = ZDICT_getDictID(dictBuffer, dictSize);
+ if (dictID==0) goto _output_error;
+ DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID);
+
+ DISPLAYLEVEL(3, "test%3i : ZDICT_optimizeTrainFromBuffer_cover : ", testNb++);
+ memset(¶ms, 0, sizeof(params));
+ params.steps = 4;
+ optDictSize = ZDICT_optimizeTrainFromBuffer_cover(dictBuffer, optDictSize,
+ CNBuffer, samplesSizes,
+ nbSamples / 4, ¶ms);
+ if (ZDICT_isError(optDictSize)) goto _output_error;
+ DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)optDictSize);
+
+ DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++);
+ dictID = ZDICT_getDictID(dictBuffer, optDictSize);
+ if (dictID==0) goto _output_error;
+ DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID);
+
+ ZSTD_freeCCtx(cctx);
+ free(dictBuffer);
+ free(samplesSizes);
+ }
+
+ /* Decompression defense tests */
+ DISPLAYLEVEL(3, "test%3i : Check input length for magic number : ", testNb++);
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 3); /* too small input */
+ if (!ZSTD_isError(r)) goto _output_error;
+ if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Check magic Number : ", testNb++);
+ ((char*)(CNBuffer))[0] = 1;
+ { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 4);
+ if (!ZSTD_isError(r)) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* content size verification test */
+ DISPLAYLEVEL(3, "test%3i : Content size verification : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t const srcSize = 5000;
+ size_t const wrongSrcSize = (srcSize + 1000);
+ ZSTD_parameters params = ZSTD_getParams(1, wrongSrcSize, 0);
+ params.fParams.contentSizeFlag = 1;
+ CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, wrongSrcSize) );
+ { size_t const result = ZSTD_compressEnd(cctx, decodedBuffer, CNBuffSize, CNBuffer, srcSize);
+ if (!ZSTD_isError(result)) goto _output_error;
+ if (ZSTD_getErrorCode(result) != ZSTD_error_srcSize_wrong) goto _output_error;
+ DISPLAYLEVEL(3, "OK : %s \n", ZSTD_getErrorName(result));
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+
+ /* negative compression level test : ensure simple API and advanced API produce same result */
+ DISPLAYLEVEL(3, "test%3i : negative compression level : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t const srcSize = CNBuffSize / 5;
+ int const compressionLevel = -1;
+
+ assert(cctx != NULL);
+ { size_t const cSize_1pass = ZSTD_compress(compressedBuffer, compressedBufferSize,
+ CNBuffer, srcSize, compressionLevel);
+ if (ZSTD_isError(cSize_1pass)) goto _output_error;
+
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
+ { size_t const compressionResult = ZSTD_compress2(cctx,
+ compressedBuffer, compressedBufferSize,
+ CNBuffer, srcSize);
+ DISPLAYLEVEL(5, "simple=%zu vs %zu=advanced : ", cSize_1pass, compressionResult);
+ if (ZSTD_isError(compressionResult)) goto _output_error;
+ if (compressionResult != cSize_1pass) goto _output_error;
+ } }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* parameters order test */
+ { size_t const inputSize = CNBuffSize / 2;
+ U64 xxh64;
+
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ DISPLAYLEVEL(3, "test%3i : parameters in order : ", testNb++);
+ assert(cctx != NULL);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 2) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 18) );
+ { size_t const compressedSize = ZSTD_compress2(cctx,
+ compressedBuffer, ZSTD_compressBound(inputSize),
+ CNBuffer, inputSize);
+ CHECK_Z(compressedSize);
+ cSize = compressedSize;
+ xxh64 = XXH64(compressedBuffer, compressedSize, 0);
+ }
+ DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)cSize);
+ ZSTD_freeCCtx(cctx);
+ }
+
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ DISPLAYLEVEL(3, "test%3i : parameters disordered : ", testNb++);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 18) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 2) );
+ { size_t const result = ZSTD_compress2(cctx,
+ compressedBuffer, ZSTD_compressBound(inputSize),
+ CNBuffer, inputSize);
+ CHECK_Z(result);
+ if (result != cSize) goto _output_error; /* must result in same compressed result, hence same size */
+ if (XXH64(compressedBuffer, result, 0) != xxh64) goto _output_error; /* must result in exactly same content, hence same hash */
+ DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)result);
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ }
+
+ /* advanced parameters for decompression */
+ { ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ assert(dctx != NULL);
+
+ DISPLAYLEVEL(3, "test%3i : get dParameter bounds ", testNb++);
+ { ZSTD_bounds const bounds = ZSTD_dParam_getBounds(ZSTD_d_windowLogMax);
+ CHECK_Z(bounds.error);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : wrong dParameter : ", testNb++);
+ { size_t const sr = ZSTD_DCtx_setParameter(dctx, (ZSTD_dParameter)999999, 0);
+ if (!ZSTD_isError(sr)) goto _output_error;
+ }
+ { ZSTD_bounds const bounds = ZSTD_dParam_getBounds((ZSTD_dParameter)999998);
+ if (!ZSTD_isError(bounds.error)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : out of bound dParameter : ", testNb++);
+ { size_t const sr = ZSTD_DCtx_setParameter(dctx, ZSTD_d_windowLogMax, 9999);
+ if (!ZSTD_isError(sr)) goto _output_error;
+ }
+ { size_t const sr = ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, (ZSTD_format_e)888);
+ if (!ZSTD_isError(sr)) goto _output_error;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ ZSTD_freeDCtx(dctx);
+ }
+
+
+ /* custom formats tests */
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ size_t const inputSize = CNBuffSize / 2; /* won't cause pb with small dict size */
+ assert(dctx != NULL); assert(cctx != NULL);
+
+ /* basic block compression */
+ DISPLAYLEVEL(3, "test%3i : magic-less format test : ", testNb++);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_format, ZSTD_f_zstd1_magicless) );
+ { ZSTD_inBuffer in = { CNBuffer, inputSize, 0 };
+ ZSTD_outBuffer out = { compressedBuffer, ZSTD_compressBound(inputSize), 0 };
+ size_t const result = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end);
+ if (result != 0) goto _output_error;
+ if (in.pos != in.size) goto _output_error;
+ cSize = out.pos;
+ }
+ DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)cSize);
+
+ DISPLAYLEVEL(3, "test%3i : decompress normally (should fail) : ", testNb++);
+ { size_t const decodeResult = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (ZSTD_getErrorCode(decodeResult) != ZSTD_error_prefix_unknown) goto _output_error;
+ DISPLAYLEVEL(3, "OK : %s \n", ZSTD_getErrorName(decodeResult));
+ }
+
+ DISPLAYLEVEL(3, "test%3i : decompress of magic-less frame : ", testNb++);
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, ZSTD_f_zstd1_magicless) );
+ { ZSTD_frameHeader zfh;
+ size_t const zfhrt = ZSTD_getFrameHeader_advanced(&zfh, compressedBuffer, cSize, ZSTD_f_zstd1_magicless);
+ if (zfhrt != 0) goto _output_error;
+ }
+ /* one shot */
+ { size_t const result = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (result != inputSize) goto _output_error;
+ DISPLAYLEVEL(3, "one-shot OK, ");
+ }
+ /* streaming */
+ { ZSTD_inBuffer in = { compressedBuffer, cSize, 0 };
+ ZSTD_outBuffer out = { decodedBuffer, CNBuffSize, 0 };
+ size_t const result = ZSTD_decompressStream(dctx, &out, &in);
+ if (result != 0) goto _output_error;
+ if (in.pos != in.size) goto _output_error;
+ if (out.pos != inputSize) goto _output_error;
+ DISPLAYLEVEL(3, "streaming OK : regenerated %u bytes \n", (unsigned)out.pos);
+ }
+
+ /* basic block compression */
+ DISPLAYLEVEL(3, "test%3i : empty magic-less format test : ", testNb++);
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_format, ZSTD_f_zstd1_magicless) );
+ { ZSTD_inBuffer in = { CNBuffer, 0, 0 };
+ ZSTD_outBuffer out = { compressedBuffer, ZSTD_compressBound(0), 0 };
+ size_t const result = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end);
+ if (result != 0) goto _output_error;
+ if (in.pos != in.size) goto _output_error;
+ cSize = out.pos;
+ }
+ DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)0, (unsigned)cSize);
+
+ DISPLAYLEVEL(3, "test%3i : decompress of empty magic-less frame : ", testNb++);
+ ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z( ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, ZSTD_f_zstd1_magicless) );
+ /* one shot */
+ { size_t const result = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
+ if (result != 0) goto _output_error;
+ DISPLAYLEVEL(3, "one-shot OK, ");
+ }
+ /* streaming */
+ { ZSTD_inBuffer in = { compressedBuffer, cSize, 0 };
+ ZSTD_outBuffer out = { decodedBuffer, CNBuffSize, 0 };
+ size_t const result = ZSTD_decompressStream(dctx, &out, &in);
+ if (result != 0) goto _output_error;
+ if (in.pos != in.size) goto _output_error;
+ if (out.pos != 0) goto _output_error;
+ DISPLAYLEVEL(3, "streaming OK : regenerated %u bytes \n", (unsigned)out.pos);
+ }
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ }
+
+ DISPLAYLEVEL(3, "test%3i : Decompression parameter reset test : ", testNb++);
+ {
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ /* Attempt to future proof this to new parameters. */
+ int const maxParam = 2000;
+ int param;
+ if (ZSTD_d_experimentalParam3 > maxParam) goto _output_error;
+ for (param = 0; param < maxParam; ++param) {
+ ZSTD_dParameter dParam = (ZSTD_dParameter)param;
+ ZSTD_bounds bounds = ZSTD_dParam_getBounds(dParam);
+ int value1;
+ int value2;
+ int check;
+ if (ZSTD_isError(bounds.error))
+ continue;
+ CHECK_Z(ZSTD_DCtx_getParameter(dctx, dParam, &value1));
+ value2 = (value1 != bounds.lowerBound) ? bounds.lowerBound : bounds.upperBound;
+ CHECK_Z(ZSTD_DCtx_setParameter(dctx, dParam, value2));
+ CHECK_Z(ZSTD_DCtx_getParameter(dctx, dParam, &check));
+ if (check != value2) goto _output_error;
+ CHECK_Z(ZSTD_DCtx_reset(dctx, ZSTD_reset_parameters));
+ CHECK_Z(ZSTD_DCtx_getParameter(dctx, dParam, &check));
+ if (check != value1) goto _output_error;
+ }
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* block API tests */
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ static const size_t dictSize = 65 KB;
+ static const size_t blockSize = 100 KB; /* won't cause pb with small dict size */
+ size_t cSize2;
+ assert(cctx != NULL); assert(dctx != NULL);
+
+ /* basic block compression */
+ DISPLAYLEVEL(3, "test%3i : Block compression test : ", testNb++);
+ CHECK_Z( ZSTD_compressBegin(cctx, 5) );
+ CHECK_Z( ZSTD_getBlockSize(cctx) >= blockSize);
+ CHECK_VAR(cSize, ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize) );
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Block decompression test : ", testNb++);
+ CHECK_Z( ZSTD_decompressBegin(dctx) );
+ { CHECK_NEWV(r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
+ if (r != blockSize) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* very long stream of block compression */
+ DISPLAYLEVEL(3, "test%3i : Huge block streaming compression test : ", testNb++);
+ CHECK_Z( ZSTD_compressBegin(cctx, -199) ); /* we just want to quickly overflow internal U32 index */
+ CHECK_Z( ZSTD_getBlockSize(cctx) >= blockSize);
+ { U64 const toCompress = 5000000000ULL; /* > 4 GB */
+ U64 compressed = 0;
+ while (compressed < toCompress) {
+ size_t const blockCSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize);
+ assert(blockCSize != 0);
+ if (ZSTD_isError(blockCSize)) goto _output_error;
+ compressed += blockCSize;
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* dictionary block compression */
+ DISPLAYLEVEL(3, "test%3i : Dictionary Block compression test : ", testNb++);
+ CHECK_Z( ZSTD_compressBegin_usingDict(cctx, CNBuffer, dictSize, 5) );
+ CHECK_VAR(cSize, ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize));
+ RDG_genBuffer((char*)CNBuffer+dictSize+blockSize, blockSize, 0.0, 0.0, seed); /* create a non-compressible second block */
+ { CHECK_NEWV(r, ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize+blockSize, blockSize) ); /* for cctx history consistency */
+ assert(r == 0); /* non-compressible block */ }
+ memcpy((char*)compressedBuffer+cSize, (char*)CNBuffer+dictSize+blockSize, blockSize); /* send non-compressed block (without header) */
+ CHECK_VAR(cSize2, ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize+blockSize, ZSTD_compressBound(blockSize),
+ (char*)CNBuffer+dictSize+2*blockSize, blockSize));
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Dictionary Block decompression test : ", testNb++);
+ CHECK_Z( ZSTD_decompressBegin_usingDict(dctx, CNBuffer, dictSize) );
+ { CHECK_NEWV( r, ZSTD_decompressBlock(dctx, decodedBuffer, blockSize, compressedBuffer, cSize) );
+ if (r != blockSize) {
+ DISPLAYLEVEL(1, "ZSTD_decompressBlock() with _usingDict() fails : %u, instead of %u expected \n", (unsigned)r, (unsigned)blockSize);
+ goto _output_error;
+ } }
+ memcpy((char*)decodedBuffer+blockSize, (char*)compressedBuffer+cSize, blockSize);
+ ZSTD_insertBlock(dctx, (char*)decodedBuffer+blockSize, blockSize); /* insert non-compressed block into dctx history */
+ { CHECK_NEWV( r, ZSTD_decompressBlock(dctx, (char*)decodedBuffer+2*blockSize, blockSize, (char*)compressedBuffer+cSize+blockSize, cSize2) );
+ if (r != blockSize) {
+ DISPLAYLEVEL(1, "ZSTD_decompressBlock() with _usingDict() and after insertBlock() fails : %u, instead of %u expected \n", (unsigned)r, (unsigned)blockSize);
+ goto _output_error;
+ } }
+ assert(memcpy((char*)CNBuffer+dictSize, decodedBuffer, blockSize*3)); /* ensure regenerated content is identical to origin */
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Block compression with CDict : ", testNb++);
+ { ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, dictSize, 3);
+ if (cdict==NULL) goto _output_error;
+ CHECK_Z( ZSTD_compressBegin_usingCDict(cctx, cdict) );
+ CHECK_Z( ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize) );
+ ZSTD_freeCDict(cdict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ }
+
+ /* long rle test */
+ { size_t sampleSize = 0;
+ size_t expectedCompressedSize = 39; /* block 1, 2: compressed, block 3: RLE, zstd 1.4.4 */
+ DISPLAYLEVEL(3, "test%3i : Long RLE test : ", testNb++);
+ memset((char*)CNBuffer+sampleSize, 'B', 256 KB - 1);
+ sampleSize += 256 KB - 1;
+ memset((char*)CNBuffer+sampleSize, 'A', 96 KB);
+ sampleSize += 96 KB;
+ cSize = ZSTD_compress(compressedBuffer, ZSTD_compressBound(sampleSize), CNBuffer, sampleSize, 1);
+ if (ZSTD_isError(cSize) || cSize > expectedCompressedSize) goto _output_error;
+ { CHECK_NEWV(regenSize, ZSTD_decompress(decodedBuffer, sampleSize, compressedBuffer, cSize));
+ if (regenSize!=sampleSize) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+ }
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_generateSequences decode from sequences test : ", testNb++);
+ {
+ size_t srcSize = 150 KB;
+ BYTE* src = (BYTE*)CNBuffer;
+ BYTE* decoded = (BYTE*)compressedBuffer;
+
+ ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ ZSTD_Sequence* seqs = (ZSTD_Sequence*)malloc(srcSize * sizeof(ZSTD_Sequence));
+ size_t seqsSize;
+
+ if (seqs == NULL) goto _output_error;
+ assert(cctx != NULL);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 19);
+ /* Populate src with random data */
+ RDG_genBuffer(CNBuffer, srcSize, compressibility, 0.5, seed);
+
+ /* Test with block delimiters roundtrip */
+ seqsSize = ZSTD_generateSequences(cctx, seqs, srcSize, src, srcSize);
+ FUZ_decodeSequences(decoded, seqs, seqsSize, src, srcSize, ZSTD_sf_explicitBlockDelimiters);
+ assert(!memcmp(CNBuffer, compressedBuffer, srcSize));
+
+ /* Test no block delimiters roundtrip */
+ seqsSize = ZSTD_mergeBlockDelimiters(seqs, seqsSize);
+ FUZ_decodeSequences(decoded, seqs, seqsSize, src, srcSize, ZSTD_sf_noBlockDelimiters);
+ assert(!memcmp(CNBuffer, compressedBuffer, srcSize));
+
+ ZSTD_freeCCtx(cctx);
+ free(seqs);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_getSequences followed by ZSTD_compressSequences : ", testNb++);
+ {
+ const size_t srcSize = 500 KB;
+ const BYTE* const src = (BYTE*)CNBuffer;
+ BYTE* const dst = (BYTE*)compressedBuffer;
+ const size_t dstCapacity = ZSTD_compressBound(srcSize);
+ const size_t decompressSize = srcSize;
+ char* const decompressBuffer = (char*)malloc(decompressSize);
+ size_t compressedSize;
+
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_Sequence* const seqs = (ZSTD_Sequence*)malloc(srcSize * sizeof(ZSTD_Sequence));
+ size_t nbSeqs;
+
+ if (seqs == NULL) goto _output_error;
+ assert(cctx != NULL);
+
+ /* Populate src with random data */
+ RDG_genBuffer(CNBuffer, srcSize, compressibility, 0., seed);
+
+ /* Roundtrip Test with block delimiters generated by ZSTD_generateSequences() */
+ nbSeqs = ZSTD_generateSequences(cctx, seqs, srcSize, src, srcSize);
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters);
+ compressedSize = ZSTD_compressSequences(cctx, dst, dstCapacity, seqs, nbSeqs, src, srcSize);
+ if (ZSTD_isError(compressedSize)) {
+ DISPLAY("Error in sequence compression with block delims\n");
+ goto _output_error;
+ }
+ { size_t const dSize = ZSTD_decompress(decompressBuffer, decompressSize, dst, compressedSize);
+ if (ZSTD_isError(dSize)) {
+ DISPLAY("Error in sequence compression roundtrip with block delims\n");
+ goto _output_error;
+ } }
+ assert(!memcmp(decompressBuffer, src, srcSize));
+
+ /* Roundtrip Test with no block delimiters */
+ { size_t const nbSeqsAfterMerge = ZSTD_mergeBlockDelimiters(seqs, nbSeqs);
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_noBlockDelimiters);
+ compressedSize = ZSTD_compressSequences(cctx, dst, dstCapacity, seqs, nbSeqsAfterMerge, src, srcSize);
+ }
+ if (ZSTD_isError(compressedSize)) {
+ DISPLAY("Error in sequence compression with no block delims\n");
+ goto _output_error;
+ }
+ { size_t const dSize = ZSTD_decompress(decompressBuffer, decompressSize, dst, compressedSize);
+ if (ZSTD_isError(dSize)) {
+ DISPLAY("Error in sequence compression roundtrip with no block delims\n");
+ goto _output_error;
+ } }
+ assert(!memcmp(decompressBuffer, src, srcSize));
+
+ ZSTD_freeCCtx(cctx);
+ free(decompressBuffer);
+ free(seqs);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Multiple blocks of zeros test */
+ #define LONGZEROSLENGTH 1000000 /* 1MB of zeros */
+ DISPLAYLEVEL(3, "test%3i : compress %u zeroes : ", testNb++, LONGZEROSLENGTH);
+ memset(CNBuffer, 0, LONGZEROSLENGTH);
+ CHECK_VAR(cSize, ZSTD_compress(compressedBuffer, ZSTD_compressBound(LONGZEROSLENGTH), CNBuffer, LONGZEROSLENGTH, 1) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/LONGZEROSLENGTH*100);
+
+ DISPLAYLEVEL(3, "test%3i : decompress %u zeroes : ", testNb++, LONGZEROSLENGTH);
+ { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, LONGZEROSLENGTH, compressedBuffer, cSize) );
+ if (r != LONGZEROSLENGTH) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* All zeroes test (test bug #137) */
+ #define ZEROESLENGTH 100
+ DISPLAYLEVEL(3, "test%3i : compress %u zeroes : ", testNb++, ZEROESLENGTH);
+ memset(CNBuffer, 0, ZEROESLENGTH);
+ CHECK_VAR(cSize, ZSTD_compress(compressedBuffer, ZSTD_compressBound(ZEROESLENGTH), CNBuffer, ZEROESLENGTH, 1) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/ZEROESLENGTH*100);
+
+ DISPLAYLEVEL(3, "test%3i : decompress %u zeroes : ", testNb++, ZEROESLENGTH);
+ { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, ZEROESLENGTH, compressedBuffer, cSize) );
+ if (r != ZEROESLENGTH) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* nbSeq limit test */
+ #define _3BYTESTESTLENGTH 131000
+ #define NB3BYTESSEQLOG 9
+ #define NB3BYTESSEQ (1 << NB3BYTESSEQLOG)
+ #define NB3BYTESSEQMASK (NB3BYTESSEQ-1)
+ /* creates a buffer full of 3-bytes sequences */
+ { BYTE _3BytesSeqs[NB3BYTESSEQ][3];
+ U32 rSeed = 1;
+
+ /* create batch of 3-bytes sequences */
+ { int i;
+ for (i=0; i < NB3BYTESSEQ; i++) {
+ _3BytesSeqs[i][0] = (BYTE)(FUZ_rand(&rSeed) & 255);
+ _3BytesSeqs[i][1] = (BYTE)(FUZ_rand(&rSeed) & 255);
+ _3BytesSeqs[i][2] = (BYTE)(FUZ_rand(&rSeed) & 255);
+ } }
+
+ /* randomly fills CNBuffer with prepared 3-bytes sequences */
+ { int i;
+ for (i=0; i < _3BYTESTESTLENGTH; i += 3) { /* note : CNBuffer size > _3BYTESTESTLENGTH+3 */
+ U32 const id = FUZ_rand(&rSeed) & NB3BYTESSEQMASK;
+ ((BYTE*)CNBuffer)[i+0] = _3BytesSeqs[id][0];
+ ((BYTE*)CNBuffer)[i+1] = _3BytesSeqs[id][1];
+ ((BYTE*)CNBuffer)[i+2] = _3BytesSeqs[id][2];
+ } } }
+ DISPLAYLEVEL(3, "test%3i : growing nbSeq : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t const maxNbSeq = _3BYTESTESTLENGTH / 3;
+ size_t const bound = ZSTD_compressBound(_3BYTESTESTLENGTH);
+ size_t nbSeq = 1;
+ while (nbSeq <= maxNbSeq) {
+ CHECK_Z(ZSTD_compressCCtx(cctx, compressedBuffer, bound, CNBuffer, nbSeq * 3, 19));
+ /* Check every sequence for the first 100, then skip more rapidly. */
+ if (nbSeq < 100) {
+ ++nbSeq;
+ } else {
+ nbSeq += (nbSeq >> 2);
+ }
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : compress lots 3-bytes sequences : ", testNb++);
+ CHECK_VAR(cSize, ZSTD_compress(compressedBuffer, ZSTD_compressBound(_3BYTESTESTLENGTH),
+ CNBuffer, _3BYTESTESTLENGTH, 19) );
+ DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/_3BYTESTESTLENGTH*100);
+
+ DISPLAYLEVEL(3, "test%3i : decompress lots 3-bytes sequence : ", testNb++);
+ { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, _3BYTESTESTLENGTH, compressedBuffer, cSize) );
+ if (r != _3BYTESTESTLENGTH) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+
+ DISPLAYLEVEL(3, "test%3i : growing literals buffer : ", testNb++);
+ RDG_genBuffer(CNBuffer, CNBuffSize, 0.0, 0.1, seed);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ size_t const bound = ZSTD_compressBound(CNBuffSize);
+ size_t size = 1;
+ while (size <= CNBuffSize) {
+ CHECK_Z(ZSTD_compressCCtx(cctx, compressedBuffer, bound, CNBuffer, size, 3));
+ /* Check every size for the first 100, then skip more rapidly. */
+ if (size < 100) {
+ ++size;
+ } else {
+ size += (size >> 2);
+ }
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : incompressible data and ill suited dictionary : ", testNb++);
+ { /* Train a dictionary on low characters */
+ size_t dictSize = 16 KB;
+ void* const dictBuffer = malloc(dictSize);
+ size_t const totalSampleSize = 1 MB;
+ size_t const sampleUnitSize = 8 KB;
+ U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize);
+ size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t));
+ if (!dictBuffer || !samplesSizes) goto _output_error;
+ { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; }
+ dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize, CNBuffer, samplesSizes, nbSamples);
+ if (ZDICT_isError(dictSize)) goto _output_error;
+ /* Reverse the characters to make the dictionary ill suited */
+ { U32 u;
+ for (u = 0; u < CNBuffSize; ++u) {
+ ((BYTE*)CNBuffer)[u] = 255 - ((BYTE*)CNBuffer)[u];
+ } }
+ { /* Compress the data */
+ size_t const inputSize = 500;
+ size_t const outputSize = ZSTD_compressBound(inputSize);
+ void* const outputBuffer = malloc(outputSize);
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ if (!outputBuffer || !cctx) goto _output_error;
+ CHECK_Z(ZSTD_compress_usingDict(cctx, outputBuffer, outputSize, CNBuffer, inputSize, dictBuffer, dictSize, 1));
+ free(outputBuffer);
+ ZSTD_freeCCtx(cctx);
+ }
+
+ free(dictBuffer);
+ free(samplesSizes);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+
+ /* findFrameCompressedSize on skippable frames */
+ DISPLAYLEVEL(3, "test%3i : frame compressed size of skippable frame : ", testNb++);
+ { const char* frame = "\x50\x2a\x4d\x18\x05\x0\x0\0abcde";
+ size_t const frameSrcSize = 13;
+ if (ZSTD_findFrameCompressedSize(frame, frameSrcSize) != frameSrcSize) goto _output_error; }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* error string tests */
+ DISPLAYLEVEL(3, "test%3i : testing ZSTD error code strings : ", testNb++);
+ if (strcmp("No error detected", ZSTD_getErrorName((ZSTD_ErrorCode)(0-ZSTD_error_no_error))) != 0) goto _output_error;
+ if (strcmp("No error detected", ZSTD_getErrorString(ZSTD_error_no_error)) != 0) goto _output_error;
+ if (strcmp("Unspecified error code", ZSTD_getErrorString((ZSTD_ErrorCode)(0-ZSTD_error_GENERIC))) != 0) goto _output_error;
+ if (strcmp("Error (generic)", ZSTD_getErrorName((size_t)0-ZSTD_error_GENERIC)) != 0) goto _output_error;
+ if (strcmp("Error (generic)", ZSTD_getErrorString(ZSTD_error_GENERIC)) != 0) goto _output_error;
+ if (strcmp("No error detected", ZSTD_getErrorName(ZSTD_error_GENERIC)) != 0) goto _output_error;
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : testing ZSTD dictionary sizes : ", testNb++);
+ RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed);
+ {
+ size_t const size = MIN(128 KB, CNBuffSize);
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_CDict* const lgCDict = ZSTD_createCDict(CNBuffer, size, 1);
+ ZSTD_CDict* const smCDict = ZSTD_createCDict(CNBuffer, 1 KB, 1);
+ ZSTD_frameHeader lgHeader;
+ ZSTD_frameHeader smHeader;
+
+ CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, CNBuffer, size, lgCDict));
+ CHECK_Z(ZSTD_getFrameHeader(&lgHeader, compressedBuffer, compressedBufferSize));
+ CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, CNBuffer, size, smCDict));
+ CHECK_Z(ZSTD_getFrameHeader(&smHeader, compressedBuffer, compressedBufferSize));
+
+ if (lgHeader.windowSize != smHeader.windowSize) goto _output_error;
+
+ ZSTD_freeCDict(smCDict);
+ ZSTD_freeCDict(lgCDict);
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : testing FSE_normalizeCount() PR#1255: ", testNb++);
+ {
+ short norm[32];
+ unsigned count[32];
+ unsigned const tableLog = 5;
+ size_t const nbSeq = 32;
+ unsigned const maxSymbolValue = 31;
+ size_t i;
+
+ for (i = 0; i < 32; ++i)
+ count[i] = 1;
+ /* Calling FSE_normalizeCount() on a uniform distribution should not
+ * cause a division by zero.
+ */
+ FSE_normalizeCount(norm, tableLog, count, nbSeq, maxSymbolValue, /* useLowProbCount */ 1);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : testing FSE_writeNCount() PR#2779: ", testNb++);
+ {
+ size_t const outBufSize = 9;
+ short const count[11] = {1, 0, 1, 0, 1, 0, 1, 0, 1, 9, 18};
+ unsigned const tableLog = 5;
+ unsigned const maxSymbolValue = 10;
+ BYTE* outBuf = (BYTE*)malloc(outBufSize*sizeof(BYTE));
+
+ /* Ensure that this write doesn't write out of bounds, and that
+ * FSE_writeNCount_generic() is *not* called with writeIsSafe == 1.
+ */
+ FSE_writeNCount(outBuf, outBufSize, count, maxSymbolValue, tableLog);
+ free(outBuf);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : testing bitwise intrinsics PR#3045: ", testNb++);
+ {
+ U32 seed_copy = seed; /* need non-const seed to avoid compiler warning for FUZ_rand(&seed) */
+ U32 rand32 = FUZ_rand(&seed_copy);
+ U64 rand64 = ((U64)FUZ_rand(&seed_copy) << 32) | FUZ_rand(&seed_copy);
+ U32 lowbit_only_32 = 1;
+ U64 lowbit_only_64 = 1;
+ U32 highbit_only_32 = (U32)1 << 31;
+ U64 highbit_only_64 = (U64)1 << 63;
+ U32 i;
+ if (rand32 == 0) rand32 = 1; /* CLZ and CTZ are undefined on 0 */
+ if (rand64 == 0) rand64 = 1; /* CLZ and CTZ are undefined on 0 */
+
+ /* Test ZSTD_countTrailingZeros32 */
+ CHECK_EQ(ZSTD_countTrailingZeros32(lowbit_only_32), 0u);
+ CHECK_EQ(ZSTD_countTrailingZeros32(highbit_only_32), 31u);
+ CHECK_EQ(ZSTD_countTrailingZeros32(rand32), ZSTD_countTrailingZeros32_fallback(rand32));
+
+ /* Test ZSTD_countLeadingZeros32 */
+ CHECK_EQ(ZSTD_countLeadingZeros32(lowbit_only_32), 31u);
+ CHECK_EQ(ZSTD_countLeadingZeros32(highbit_only_32), 0u);
+ CHECK_EQ(ZSTD_countLeadingZeros32(rand32), ZSTD_countLeadingZeros32_fallback(rand32));
+
+ /* Test ZSTD_countTrailingZeros64 */
+ CHECK_EQ(ZSTD_countTrailingZeros64(lowbit_only_64), 0u);
+ CHECK_EQ(ZSTD_countTrailingZeros64(highbit_only_64), 63u);
+
+ /* Test ZSTD_countLeadingZeros64 */
+ CHECK_EQ(ZSTD_countLeadingZeros64(lowbit_only_64), 63u);
+ CHECK_EQ(ZSTD_countLeadingZeros64(highbit_only_64), 0u);
+
+ /* Test ZSTD_highbit32 */
+ CHECK_EQ(ZSTD_highbit32(lowbit_only_32), 0u);
+ CHECK_EQ(ZSTD_highbit32(highbit_only_32), 31u);
+
+ /* Test ZSTD_NbCommonBytes */
+ if (MEM_isLittleEndian()) {
+ if (MEM_64bits()) {
+ CHECK_EQ(ZSTD_NbCommonBytes(lowbit_only_32), 0u);
+ CHECK_EQ(ZSTD_NbCommonBytes(highbit_only_32), 3u);
+ } else {
+ CHECK_EQ(ZSTD_NbCommonBytes(lowbit_only_32), 0u);
+ CHECK_EQ(ZSTD_NbCommonBytes(highbit_only_32), 3u);
+ }
+ } else {
+ if (MEM_64bits()) {
+ CHECK_EQ(ZSTD_NbCommonBytes(lowbit_only_32), 7u);
+ CHECK_EQ(ZSTD_NbCommonBytes(highbit_only_32), 4u);
+ } else {
+ CHECK_EQ(ZSTD_NbCommonBytes(lowbit_only_32), 3u);
+ CHECK_EQ(ZSTD_NbCommonBytes(highbit_only_32), 0u);
+ }
+ }
+
+ /* Test MEM_ intrinsics */
+ CHECK_EQ(MEM_swap32(rand32), MEM_swap32_fallback(rand32));
+ CHECK_EQ(MEM_swap64(rand64), MEM_swap64_fallback(rand64));
+
+ /* Test fallbacks vs intrinsics on a range of small integers */
+ for (i=1; i <= 1000; i++) {
+ CHECK_EQ(MEM_swap32(i), MEM_swap32_fallback(i));
+ CHECK_EQ(MEM_swap64((U64)i), MEM_swap64_fallback((U64)i));
+ CHECK_EQ(ZSTD_countTrailingZeros32(i), ZSTD_countTrailingZeros32_fallback(i));
+ CHECK_EQ(ZSTD_countLeadingZeros32(i), ZSTD_countLeadingZeros32_fallback(i));
+ }
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+#ifdef ZSTD_MULTITHREAD
+ DISPLAYLEVEL(3, "test%3i : passing wrong full dict should fail on compressStream2 refPrefix ", testNb++);
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ size_t const srcSize = 1 MB + 5; /* A little more than ZSTDMT_JOBSIZE_MIN */
+ size_t const dstSize = ZSTD_compressBound(srcSize);
+ void* const src = CNBuffer;
+ void* const dst = compressedBuffer;
+ void* dict = (void*)malloc(srcSize);
+
+ RDG_genBuffer(src, srcSize, compressibility, 0.5, seed);
+ RDG_genBuffer(dict, srcSize, compressibility, 0., seed);
+
+ /* Make sure there is no ZSTD_MAGIC_NUMBER */
+ memset(dict, 0, sizeof(U32));
+
+ /* something more than 1 */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2));
+ /* lie and claim this is a full dict */
+ CHECK_Z(ZSTD_CCtx_refPrefix_advanced(cctx, dict, srcSize, ZSTD_dct_fullDict));
+
+ { ZSTD_outBuffer out = {dst, dstSize, 0};
+ ZSTD_inBuffer in = {src, srcSize, 0};
+ /* should fail because its not a full dict like we said it was */
+ assert(ZSTD_isError(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush)));
+ }
+
+ ZSTD_freeCCtx(cctx);
+ free(dict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : small dictionary with multithreading and LDM ", testNb++);
+ { ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ size_t const srcSize = 1 MB + 5; /* A little more than ZSTDMT_JOBSIZE_MIN */
+ size_t const dictSize = 10;
+ size_t const dstSize = ZSTD_compressBound(srcSize);
+ void* const src = CNBuffer;
+ void* const dst = compressedBuffer;
+ void* dict = (void*)malloc(dictSize);
+
+ RDG_genBuffer(src, srcSize, compressibility, 0.5, seed);
+ RDG_genBuffer(dict, dictSize, compressibility, 0., seed);
+
+ /* Make sure there is no ZSTD_MAGIC_NUMBER */
+ memset(dict, 0, sizeof(U32));
+
+ /* Enable MT, LDM, and use refPrefix() for a small dict */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
+ CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, dictSize));
+
+ CHECK_Z(ZSTD_compress2(cctx, dst, dstSize, src, srcSize));
+
+ ZSTD_freeCCtx(cctx);
+ free(dict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_getCParams() + dictionary ", testNb++);
+ {
+ ZSTD_compressionParameters const medium = ZSTD_getCParams(1, 16*1024-1, 0);
+ ZSTD_compressionParameters const large = ZSTD_getCParams(1, 128*1024-1, 0);
+ ZSTD_compressionParameters const smallDict = ZSTD_getCParams(1, 0, 400);
+ ZSTD_compressionParameters const mediumDict = ZSTD_getCParams(1, 0, 10000);
+ ZSTD_compressionParameters const largeDict = ZSTD_getCParams(1, 0, 100000);
+
+ assert(!memcmp(&smallDict, &mediumDict, sizeof(smallDict)));
+ assert(!memcmp(&medium, &mediumDict, sizeof(medium)));
+ assert(!memcmp(&large, &largeDict, sizeof(large)));
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_adjustCParams() + dictionary ", testNb++);
+ {
+ ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, 0, 0);
+ ZSTD_compressionParameters const smallDict = ZSTD_adjustCParams(cParams, 0, 400);
+ ZSTD_compressionParameters const smallSrcAndDict = ZSTD_adjustCParams(cParams, 500, 400);
+
+ assert(smallSrcAndDict.windowLog == 10);
+ assert(!memcmp(&cParams, &smallDict, sizeof(cParams)));
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : check compression mem usage monotonicity over levels for estimateCCtxSize() : ", testNb++);
+ {
+ int level = 1;
+ size_t prevSize = 0;
+ for (; level < ZSTD_maxCLevel(); ++level) {
+ size_t const currSize = ZSTD_estimateCCtxSize(level);
+ if (prevSize > currSize) {
+ DISPLAYLEVEL(3, "Error! previous cctx size: %zu at level: %d is larger than current cctx size: %zu at level: %d",
+ prevSize, level-1, currSize, level);
+ goto _output_error;
+ }
+ prevSize = currSize;
+ }
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : check estimateCCtxSize() always larger or equal to ZSTD_estimateCCtxSize_usingCParams() : ", testNb++);
+ {
+ size_t const kSizeIncrement = 2 KB;
+ int level = -3;
+
+ for (; level <= ZSTD_maxCLevel(); ++level) {
+ size_t dictSize = 0;
+ for (; dictSize <= 256 KB; dictSize += 8 * kSizeIncrement) {
+ size_t srcSize = 2 KB;
+ for (; srcSize < 300 KB; srcSize += kSizeIncrement) {
+ ZSTD_compressionParameters const cParams = ZSTD_getCParams(level, srcSize, dictSize);
+ size_t const cctxSizeUsingCParams = ZSTD_estimateCCtxSize_usingCParams(cParams);
+ size_t const cctxSizeUsingLevel = ZSTD_estimateCCtxSize(level);
+ if (cctxSizeUsingLevel < cctxSizeUsingCParams
+ || ZSTD_isError(cctxSizeUsingCParams)
+ || ZSTD_isError(cctxSizeUsingLevel)) {
+ DISPLAYLEVEL(3, "error! l: %d dict: %zu srcSize: %zu cctx size cpar: %zu, cctx size level: %zu\n",
+ level, dictSize, srcSize, cctxSizeUsingCParams, cctxSizeUsingLevel);
+ goto _output_error;
+ } } } } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : thread pool API tests : \n", testNb++)
+ {
+ int const threadPoolTestResult = threadPoolTests();
+ if (threadPoolTestResult) {
+ goto _output_error;
+ }
+ }
+ DISPLAYLEVEL(3, "thread pool tests OK \n");
+
+#endif /* ZSTD_MULTITHREAD */
+
+_end:
+ free(CNBuffer);
+ free(compressedBuffer);
+ free(decodedBuffer);
+ return testResult;
+
+_output_error:
+ testResult = 1;
+ DISPLAY("Error detected in Unit tests ! \n");
+ goto _end;
+}
+
+static int longUnitTests(U32 const seed, double compressibility)
+{
+ size_t const CNBuffSize = 5 MB;
+ void* const CNBuffer = malloc(CNBuffSize);
+ size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize);
+ void* const compressedBuffer = malloc(compressedBufferSize);
+ void* const decodedBuffer = malloc(CNBuffSize);
+ int testResult = 0;
+ unsigned testNb=0;
+ size_t cSize;
+
+ /* Create compressible noise */
+ if (!CNBuffer || !compressedBuffer || !decodedBuffer) {
+ DISPLAY("Not enough memory, aborting\n");
+ testResult = 1;
+ goto _end;
+ }
+ RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed);
+
+ /* note : this test is rather long, it would be great to find a way to speed up its execution */
+ DISPLAYLEVEL(3, "longtest%3i : table cleanliness through index reduction : ", testNb++);
+ { int cLevel;
+ size_t approxIndex = 0;
+ size_t maxIndex = ((3U << 29) + (1U << ZSTD_WINDOWLOG_MAX)); /* ZSTD_CURRENT_MAX from zstd_compress_internal.h */
+
+ /* Provision enough space in a static context so that we can do all
+ * this without ever reallocating, which would reset the indices. */
+ size_t const staticCCtxSize = ZSTD_estimateCStreamSize(22);
+ void* const staticCCtxBuffer = malloc(staticCCtxSize);
+ ZSTD_CCtx* const cctx = ZSTD_initStaticCCtx(staticCCtxBuffer, staticCCtxSize);
+
+ /* bump the indices so the following compressions happen at high
+ * indices. */
+ { ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize, 0 };
+ ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 };
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, -500));
+ while (approxIndex <= (maxIndex / 4) * 3) {
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+ approxIndex += in.pos;
+ CHECK_Z(in.pos == in.size);
+ in.pos = 0;
+ out.pos = 0;
+ }
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ }
+
+ /* spew a bunch of stuff into the table area */
+ for (cLevel = 1; cLevel <= 22; cLevel++) {
+ ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize / (unsigned)cLevel, 0 };
+ ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 };
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, cLevel));
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ approxIndex += in.pos;
+ }
+
+ /* now crank the indices so we overflow */
+ { ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize, 0 };
+ ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 };
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, -500));
+ while (approxIndex <= maxIndex) {
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+ approxIndex += in.pos;
+ CHECK_Z(in.pos == in.size);
+ in.pos = 0;
+ out.pos = 0;
+ }
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ }
+
+ /* do a bunch of compressions again in low indices and ensure we don't
+ * hit untracked invalid indices */
+ for (cLevel = 1; cLevel <= 22; cLevel++) {
+ ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize / (unsigned)cLevel, 0 };
+ ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 };
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, cLevel));
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ approxIndex += in.pos;
+ }
+
+ free(staticCCtxBuffer);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "longtest%3i : testing ldm no regressions in size for opt parser : ", testNb++);
+ { size_t cSizeLdm;
+ size_t cSizeNoLdm;
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+
+ RDG_genBuffer(CNBuffer, CNBuffSize, 0.5, 0.5, seed);
+
+ /* Enable checksum to verify round trip. */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 19));
+
+ /* Round trip once with ldm. */
+ cSizeLdm = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSizeLdm);
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSizeLdm));
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_disable));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 19));
+
+ /* Round trip once without ldm. */
+ cSizeNoLdm = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSizeNoLdm);
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSizeNoLdm));
+
+ if (cSizeLdm > cSizeNoLdm) {
+ DISPLAY("Using long mode should not cause regressions for btopt+\n");
+ testResult = 1;
+ goto _end;
+ }
+
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "longtest%3i : testing cdict compression with different attachment strategies : ", testNb++);
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ size_t dictSize = CNBuffSize;
+ void* dict = (void*)malloc(dictSize);
+ ZSTD_CCtx_params* cctx_params = ZSTD_createCCtxParams();
+ ZSTD_dictAttachPref_e const attachPrefs[] = {
+ ZSTD_dictDefaultAttach,
+ ZSTD_dictForceAttach,
+ ZSTD_dictForceCopy,
+ ZSTD_dictForceLoad,
+ ZSTD_dictDefaultAttach,
+ ZSTD_dictForceAttach,
+ ZSTD_dictForceCopy,
+ ZSTD_dictForceLoad
+ };
+ int const enableDedicatedDictSearch[] = {0, 0, 0, 0, 1, 1, 1, 1};
+ int cLevel;
+ int i;
+
+ RDG_genBuffer(dict, dictSize, 0.5, 0.5, seed);
+ RDG_genBuffer(CNBuffer, CNBuffSize, 0.6, 0.6, seed);
+
+ CHECK_Z(cctx_params != NULL);
+
+ for (dictSize = CNBuffSize; dictSize; dictSize = dictSize >> 3) {
+ DISPLAYLEVEL(3, "\n Testing with dictSize %u ", (U32)dictSize);
+ for (cLevel = 4; cLevel < 13; cLevel++) {
+ for (i = 0; i < 8; ++i) {
+ ZSTD_dictAttachPref_e const attachPref = attachPrefs[i];
+ int const enableDDS = enableDedicatedDictSearch[i];
+ ZSTD_CDict* cdict;
+
+ DISPLAYLEVEL(5, "\n dictSize %u cLevel %d iter %d ", (U32)dictSize, cLevel, i);
+
+ ZSTD_CCtxParams_init(cctx_params, cLevel);
+ CHECK_Z(ZSTD_CCtxParams_setParameter(cctx_params, ZSTD_c_enableDedicatedDictSearch, enableDDS));
+
+ cdict = ZSTD_createCDict_advanced2(dict, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, cctx_params, ZSTD_defaultCMem);
+ CHECK(cdict != NULL);
+
+ CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, (int)attachPref));
+
+ cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, dictSize));
+
+ DISPLAYLEVEL(5, "compressed to %u bytes ", (U32)cSize);
+
+ CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
+ ZSTD_freeCDict(cdict);
+ } } }
+
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ ZSTD_freeCCtxParams(cctx_params);
+ free(dict);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+_end:
+ free(CNBuffer);
+ free(compressedBuffer);
+ free(decodedBuffer);
+ return testResult;
+}
+
+
+static size_t findDiff(const void* buf1, const void* buf2, size_t max)
+{
+ const BYTE* b1 = (const BYTE*)buf1;
+ const BYTE* b2 = (const BYTE*)buf2;
+ size_t u;
+ for (u=0; u<max; u++) {
+ if (b1[u] != b2[u]) break;
+ }
+ return u;
+}
+
+
+static ZSTD_parameters FUZ_makeParams(ZSTD_compressionParameters cParams, ZSTD_frameParameters fParams)
+{
+ ZSTD_parameters params;
+ params.cParams = cParams;
+ params.fParams = fParams;
+ return params;
+}
+
+static size_t FUZ_rLogLength(U32* seed, U32 logLength)
+{
+ size_t const lengthMask = ((size_t)1 << logLength) - 1;
+ return (lengthMask+1) + (FUZ_rand(seed) & lengthMask);
+}
+
+static size_t FUZ_randomLength(U32* seed, U32 maxLog)
+{
+ U32 const logLength = FUZ_rand(seed) % maxLog;
+ return FUZ_rLogLength(seed, logLength);
+}
+
+#undef CHECK
+#define CHECK(cond, ...) { \
+ if (cond) { \
+ DISPLAY("Error => "); \
+ DISPLAY(__VA_ARGS__); \
+ DISPLAY(" (seed %u, test nb %u) \n", (unsigned)seed, testNb); \
+ goto _output_error; \
+} }
+
+#undef CHECK_Z
+#define CHECK_Z(f) { \
+ size_t const err = f; \
+ if (ZSTD_isError(err)) { \
+ DISPLAY("Error => %s : %s ", \
+ #f, ZSTD_getErrorName(err)); \
+ DISPLAY(" (seed %u, test nb %u) \n", (unsigned)seed, testNb); \
+ goto _output_error; \
+} }
+
+
+static int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, U32 const maxDurationS, double compressibility, int bigTests)
+{
+ static const U32 maxSrcLog = 23;
+ static const U32 maxSampleLog = 22;
+ size_t const srcBufferSize = (size_t)1<<maxSrcLog;
+ size_t const dstBufferSize = (size_t)1<<maxSampleLog;
+ size_t const cBufferSize = ZSTD_compressBound(dstBufferSize);
+ BYTE* cNoiseBuffer[5];
+ BYTE* const cBuffer = (BYTE*) malloc (cBufferSize);
+ BYTE* const dstBuffer = (BYTE*) malloc (dstBufferSize);
+ BYTE* const mirrorBuffer = (BYTE*) malloc (dstBufferSize);
+ ZSTD_CCtx* const refCtx = ZSTD_createCCtx();
+ ZSTD_CCtx* const ctx = ZSTD_createCCtx();
+ ZSTD_DCtx* const dctx = ZSTD_createDCtx();
+ U32 result = 0;
+ unsigned testNb = 0;
+ U32 coreSeed = seed;
+ UTIL_time_t const startClock = UTIL_getTime();
+ U64 const maxClockSpan = maxDurationS * SEC_TO_MICRO;
+ int const cLevelLimiter = bigTests ? 3 : 2;
+
+ /* allocation */
+ cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
+ cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
+ CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4]
+ || !dstBuffer || !mirrorBuffer || !cBuffer || !refCtx || !ctx || !dctx,
+ "Not enough memory, fuzzer tests cancelled");
+
+ /* Create initial samples */
+ RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
+ RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
+ RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
+ RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
+ RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
+
+ /* catch up testNb */
+ for (testNb=1; testNb < startTest; testNb++) FUZ_rand(&coreSeed);
+
+ /* main test loop */
+ for ( ; (testNb <= nbTests) || (UTIL_clockSpanMicro(startClock) < maxClockSpan); testNb++ ) {
+ BYTE* srcBuffer; /* jumping pointer */
+ U32 lseed;
+ size_t sampleSize, maxTestSize, totalTestSize;
+ size_t cSize, totalCSize, totalGenSize;
+ U64 crcOrig;
+ BYTE* sampleBuffer;
+ const BYTE* dict;
+ size_t dictSize;
+
+ /* notification */
+ if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
+ else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
+
+ FUZ_rand(&coreSeed);
+ { U32 const prime1 = 2654435761U; lseed = coreSeed ^ prime1; }
+
+ /* srcBuffer selection [0-4] */
+ { U32 buffNb = FUZ_rand(&lseed) & 0x7F;
+ if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
+ else {
+ buffNb >>= 3;
+ if (buffNb & 7) {
+ const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
+ buffNb = tnb[buffNb >> 3];
+ } else {
+ const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
+ buffNb = tnb[buffNb >> 3];
+ } }
+ srcBuffer = cNoiseBuffer[buffNb];
+ }
+
+ /* select src segment */
+ sampleSize = FUZ_randomLength(&lseed, maxSampleLog);
+
+ /* create sample buffer (to catch read error with valgrind & sanitizers) */
+ sampleBuffer = (BYTE*)malloc(sampleSize);
+ CHECK(sampleBuffer==NULL, "not enough memory for sample buffer");
+ { size_t const sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize);
+ memcpy(sampleBuffer, srcBuffer + sampleStart, sampleSize); }
+ crcOrig = XXH64(sampleBuffer, sampleSize, 0);
+
+ /* compression tests */
+ { int const cLevelPositive = (int)
+ ( FUZ_rand(&lseed) %
+ ((U32)ZSTD_maxCLevel() - (FUZ_highbit32((U32)sampleSize) / (U32)cLevelLimiter)) )
+ + 1;
+ int const cLevel = ((FUZ_rand(&lseed) & 15) == 3) ?
+ - (int)((FUZ_rand(&lseed) & 7) + 1) : /* test negative cLevel */
+ cLevelPositive;
+ DISPLAYLEVEL(5, "fuzzer t%u: Simple compression test (level %i) \n", testNb, cLevel);
+ cSize = ZSTD_compressCCtx(ctx, cBuffer, cBufferSize, sampleBuffer, sampleSize, cLevel);
+ CHECK(ZSTD_isError(cSize), "ZSTD_compressCCtx failed : %s", ZSTD_getErrorName(cSize));
+
+ /* compression failure test : too small dest buffer */
+ assert(cSize > 3);
+ { const size_t missing = (FUZ_rand(&lseed) % (cSize-2)) + 1;
+ const size_t tooSmallSize = cSize - missing;
+ const unsigned endMark = 0x4DC2B1A9;
+ memcpy(dstBuffer+tooSmallSize, &endMark, sizeof(endMark));
+ DISPLAYLEVEL(5, "fuzzer t%u: compress into too small buffer of size %u (missing %u bytes) \n",
+ testNb, (unsigned)tooSmallSize, (unsigned)missing);
+ { size_t const errorCode = ZSTD_compressCCtx(ctx, dstBuffer, tooSmallSize, sampleBuffer, sampleSize, cLevel);
+ CHECK(ZSTD_getErrorCode(errorCode) != ZSTD_error_dstSize_tooSmall, "ZSTD_compressCCtx should have failed ! (buffer too small : %u < %u)", (unsigned)tooSmallSize, (unsigned)cSize); }
+ { unsigned endCheck; memcpy(&endCheck, dstBuffer+tooSmallSize, sizeof(endCheck));
+ CHECK(endCheck != endMark, "ZSTD_compressCCtx : dst buffer overflow (check.%08X != %08X.mark)", endCheck, endMark); }
+ } }
+
+ /* frame header decompression test */
+ { ZSTD_frameHeader zfh;
+ CHECK_Z( ZSTD_getFrameHeader(&zfh, cBuffer, cSize) );
+ CHECK(zfh.frameContentSize != sampleSize, "Frame content size incorrect");
+ }
+
+ /* Decompressed size test */
+ { unsigned long long const rSize = ZSTD_findDecompressedSize(cBuffer, cSize);
+ CHECK(rSize != sampleSize, "decompressed size incorrect");
+ }
+
+ /* successful decompression test */
+ DISPLAYLEVEL(5, "fuzzer t%u: simple decompression test \n", testNb);
+ { size_t const margin = (FUZ_rand(&lseed) & 1) ? 0 : (FUZ_rand(&lseed) & 31) + 1;
+ size_t const dSize = ZSTD_decompress(dstBuffer, sampleSize + margin, cBuffer, cSize);
+ CHECK(dSize != sampleSize, "ZSTD_decompress failed (%s) (srcSize : %u ; cSize : %u)", ZSTD_getErrorName(dSize), (unsigned)sampleSize, (unsigned)cSize);
+ { U64 const crcDest = XXH64(dstBuffer, sampleSize, 0);
+ CHECK(crcOrig != crcDest, "decompression result corrupted (pos %u / %u)", (unsigned)findDiff(sampleBuffer, dstBuffer, sampleSize), (unsigned)sampleSize);
+ } }
+
+ free(sampleBuffer); /* no longer useful after this point */
+
+ /* truncated src decompression test */
+ DISPLAYLEVEL(5, "fuzzer t%u: decompression of truncated source \n", testNb);
+ { size_t const missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
+ size_t const tooSmallSize = cSize - missing;
+ void* cBufferTooSmall = malloc(tooSmallSize); /* valgrind will catch read overflows */
+ CHECK(cBufferTooSmall == NULL, "not enough memory !");
+ memcpy(cBufferTooSmall, cBuffer, tooSmallSize);
+ { size_t const errorCode = ZSTD_decompress(dstBuffer, dstBufferSize, cBufferTooSmall, tooSmallSize);
+ CHECK(!ZSTD_isError(errorCode), "ZSTD_decompress should have failed ! (truncated src buffer)"); }
+ free(cBufferTooSmall);
+ }
+
+ /* too small dst decompression test */
+ DISPLAYLEVEL(5, "fuzzer t%u: decompress into too small dst buffer \n", testNb);
+ if (sampleSize > 3) {
+ size_t const missing = (FUZ_rand(&lseed) % (sampleSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */
+ size_t const tooSmallSize = sampleSize - missing;
+ static const BYTE token = 0xA9;
+ dstBuffer[tooSmallSize] = token;
+ { size_t const errorCode = ZSTD_decompress(dstBuffer, tooSmallSize, cBuffer, cSize);
+ CHECK(ZSTD_getErrorCode(errorCode) != ZSTD_error_dstSize_tooSmall, "ZSTD_decompress should have failed : %u > %u (dst buffer too small)", (unsigned)errorCode, (unsigned)tooSmallSize); }
+ CHECK(dstBuffer[tooSmallSize] != token, "ZSTD_decompress : dst buffer overflow");
+ }
+
+ /* noisy src decompression test */
+ if (cSize > 6) {
+ /* insert noise into src */
+ { U32 const maxNbBits = FUZ_highbit32((U32)(cSize-4));
+ size_t pos = 4; /* preserve magic number (too easy to detect) */
+ for (;;) {
+ /* keep some original src */
+ { U32 const nbBits = FUZ_rand(&lseed) % maxNbBits;
+ size_t const mask = (1<<nbBits) - 1;
+ size_t const skipLength = FUZ_rand(&lseed) & mask;
+ pos += skipLength;
+ }
+ if (pos >= cSize) break;
+ /* add noise */
+ { U32 const nbBitsCodes = FUZ_rand(&lseed) % maxNbBits;
+ U32 const nbBits = nbBitsCodes ? nbBitsCodes-1 : 0;
+ size_t const mask = (1<<nbBits) - 1;
+ size_t const rNoiseLength = (FUZ_rand(&lseed) & mask) + 1;
+ size_t const noiseLength = MIN(rNoiseLength, cSize-pos);
+ size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseLength);
+ memcpy(cBuffer + pos, srcBuffer + noiseStart, noiseLength);
+ pos += noiseLength;
+ } } }
+
+ /* decompress noisy source */
+ DISPLAYLEVEL(5, "fuzzer t%u: decompress noisy source \n", testNb);
+ { U32 const endMark = 0xA9B1C3D6;
+ memcpy(dstBuffer+sampleSize, &endMark, 4);
+ { size_t const decompressResult = ZSTD_decompress(dstBuffer, sampleSize, cBuffer, cSize);
+ /* result *may* be an unlikely success, but even then, it must strictly respect dst buffer boundaries */
+ CHECK((!ZSTD_isError(decompressResult)) && (decompressResult>sampleSize),
+ "ZSTD_decompress on noisy src : result is too large : %u > %u (dst buffer)", (unsigned)decompressResult, (unsigned)sampleSize);
+ }
+ { U32 endCheck; memcpy(&endCheck, dstBuffer+sampleSize, 4);
+ CHECK(endMark!=endCheck, "ZSTD_decompress on noisy src : dst buffer overflow");
+ } } } /* noisy src decompression test */
+
+ /*===== Bufferless streaming compression test, scattered segments and dictionary =====*/
+ DISPLAYLEVEL(5, "fuzzer t%u: Bufferless streaming compression test \n", testNb);
+ { U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
+ U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
+ int const cLevel = (int)(FUZ_rand(&lseed) %
+ ((U32)ZSTD_maxCLevel() -
+ (MAX(testLog, dictLog) / (U32)cLevelLimiter))) +
+ 1;
+ maxTestSize = FUZ_rLogLength(&lseed, testLog);
+ if (maxTestSize >= dstBufferSize) maxTestSize = dstBufferSize-1;
+
+ dictSize = FUZ_rLogLength(&lseed, dictLog); /* needed also for decompression */
+ dict = srcBuffer + (FUZ_rand(&lseed) % (srcBufferSize - dictSize));
+
+ DISPLAYLEVEL(6, "fuzzer t%u: Compressing up to <=%u bytes at level %i with dictionary size %u \n",
+ testNb, (unsigned)maxTestSize, cLevel, (unsigned)dictSize);
+
+ if (FUZ_rand(&lseed) & 0xF) {
+ CHECK_Z ( ZSTD_compressBegin_usingDict(refCtx, dict, dictSize, cLevel) );
+ } else {
+ ZSTD_compressionParameters const cPar = ZSTD_getCParams(cLevel, ZSTD_CONTENTSIZE_UNKNOWN, dictSize);
+ ZSTD_frameParameters const fPar = { FUZ_rand(&lseed)&1 /* contentSizeFlag */,
+ !(FUZ_rand(&lseed)&3) /* contentChecksumFlag*/,
+ 0 /*NodictID*/ }; /* note : since dictionary is fake, dictIDflag has no impact */
+ ZSTD_parameters const p = FUZ_makeParams(cPar, fPar);
+ CHECK_Z ( ZSTD_compressBegin_advanced(refCtx, dict, dictSize, p, 0) );
+ }
+ CHECK_Z( ZSTD_copyCCtx(ctx, refCtx, 0) );
+ }
+
+ { U32 const nbChunks = (FUZ_rand(&lseed) & 127) + 2;
+ U32 n;
+ XXH64_state_t xxhState;
+ XXH64_reset(&xxhState, 0);
+ for (totalTestSize=0, cSize=0, n=0 ; n<nbChunks ; n++) {
+ size_t const segmentSize = FUZ_randomLength(&lseed, maxSampleLog);
+ size_t const segmentStart = FUZ_rand(&lseed) % (srcBufferSize - segmentSize);
+
+ if (cBufferSize-cSize < ZSTD_compressBound(segmentSize)) break; /* avoid invalid dstBufferTooSmall */
+ if (totalTestSize+segmentSize > maxTestSize) break;
+
+ { size_t const compressResult = ZSTD_compressContinue(ctx, cBuffer+cSize, cBufferSize-cSize, srcBuffer+segmentStart, segmentSize);
+ CHECK (ZSTD_isError(compressResult), "multi-segments compression error : %s", ZSTD_getErrorName(compressResult));
+ cSize += compressResult;
+ }
+ XXH64_update(&xxhState, srcBuffer+segmentStart, segmentSize);
+ memcpy(mirrorBuffer + totalTestSize, srcBuffer+segmentStart, segmentSize);
+ totalTestSize += segmentSize;
+ }
+
+ { size_t const flushResult = ZSTD_compressEnd(ctx, cBuffer+cSize, cBufferSize-cSize, NULL, 0);
+ CHECK (ZSTD_isError(flushResult), "multi-segments epilogue error : %s", ZSTD_getErrorName(flushResult));
+ cSize += flushResult;
+ }
+ crcOrig = XXH64_digest(&xxhState);
+ }
+
+ /* streaming decompression test */
+ DISPLAYLEVEL(5, "fuzzer t%u: Bufferless streaming decompression test \n", testNb);
+ /* ensure memory requirement is good enough (should always be true) */
+ { ZSTD_frameHeader zfh;
+ CHECK( ZSTD_getFrameHeader(&zfh, cBuffer, ZSTD_FRAMEHEADERSIZE_MAX),
+ "ZSTD_getFrameHeader(): error retrieving frame information");
+ { size_t const roundBuffSize = ZSTD_decodingBufferSize_min(zfh.windowSize, zfh.frameContentSize);
+ CHECK_Z(roundBuffSize);
+ CHECK((roundBuffSize > totalTestSize) && (zfh.frameContentSize!=ZSTD_CONTENTSIZE_UNKNOWN),
+ "ZSTD_decodingBufferSize_min() requires more memory (%u) than necessary (%u)",
+ (unsigned)roundBuffSize, (unsigned)totalTestSize );
+ } }
+ if (dictSize<8) dictSize=0, dict=NULL; /* disable dictionary */
+ CHECK_Z( ZSTD_decompressBegin_usingDict(dctx, dict, dictSize) );
+ totalCSize = 0;
+ totalGenSize = 0;
+ while (totalCSize < cSize) {
+ size_t const inSize = ZSTD_nextSrcSizeToDecompress(dctx);
+ size_t const genSize = ZSTD_decompressContinue(dctx, dstBuffer+totalGenSize, dstBufferSize-totalGenSize, cBuffer+totalCSize, inSize);
+ CHECK (ZSTD_isError(genSize), "ZSTD_decompressContinue error : %s", ZSTD_getErrorName(genSize));
+ totalGenSize += genSize;
+ totalCSize += inSize;
+ }
+ CHECK (ZSTD_nextSrcSizeToDecompress(dctx) != 0, "frame not fully decoded");
+ CHECK (totalGenSize != totalTestSize, "streaming decompressed data : wrong size")
+ CHECK (totalCSize != cSize, "compressed data should be fully read")
+ { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
+ CHECK(crcOrig != crcDest, "streaming decompressed data corrupted (pos %u / %u)",
+ (unsigned)findDiff(mirrorBuffer, dstBuffer, totalTestSize), (unsigned)totalTestSize);
+ }
+ } /* for ( ; (testNb <= nbTests) */
+ DISPLAY("\r%u fuzzer tests completed \n", testNb-1);
+
+_cleanup:
+ ZSTD_freeCCtx(refCtx);
+ ZSTD_freeCCtx(ctx);
+ ZSTD_freeDCtx(dctx);
+ free(cNoiseBuffer[0]);
+ free(cNoiseBuffer[1]);
+ free(cNoiseBuffer[2]);
+ free(cNoiseBuffer[3]);
+ free(cNoiseBuffer[4]);
+ free(cBuffer);
+ free(dstBuffer);
+ free(mirrorBuffer);
+ return (int)result;
+
+_output_error:
+ result = 1;
+ goto _cleanup;
+}
+
+
+/*_*******************************************************
+* Command line
+*********************************************************/
+static int FUZ_usage(const char* programName)
+{
+ DISPLAY( "Usage :\n");
+ DISPLAY( " %s [args]\n", programName);
+ DISPLAY( "\n");
+ DISPLAY( "Arguments :\n");
+ DISPLAY( " -i# : Number of tests (default:%i)\n", nbTestsDefault);
+ DISPLAY( " -T# : Max duration to run for. Overrides number of tests. (e.g. -T1m or -T60s for one minute)\n");
+ DISPLAY( " -s# : Select seed (default:prompt user)\n");
+ DISPLAY( " -t# : Select starting test number (default:0)\n");
+ DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", FUZ_compressibility_default);
+ DISPLAY( " -v : verbose\n");
+ DISPLAY( " -p : pause at the end\n");
+ DISPLAY( " -h : display help and exit\n");
+ return 0;
+}
+
+/*! readU32FromChar() :
+ @return : unsigned integer value read from input in `char` format
+ allows and interprets K, KB, KiB, M, MB and MiB suffix.
+ Will also modify `*stringPtr`, advancing it to position where it stopped reading.
+ Note : function result can overflow if digit string > MAX_UINT */
+static unsigned readU32FromChar(const char** stringPtr)
+{
+ unsigned result = 0;
+ while ((**stringPtr >='0') && (**stringPtr <='9'))
+ result *= 10, result += (unsigned)(**stringPtr - '0'), (*stringPtr)++ ;
+ if ((**stringPtr=='K') || (**stringPtr=='M')) {
+ result <<= 10;
+ if (**stringPtr=='M') result <<= 10;
+ (*stringPtr)++ ;
+ if (**stringPtr=='i') (*stringPtr)++;
+ if (**stringPtr=='B') (*stringPtr)++;
+ }
+ return result;
+}
+
+/** longCommandWArg() :
+ * check if *stringPtr is the same as longCommand.
+ * If yes, @return 1 and advances *stringPtr to the position which immediately follows longCommand.
+ * @return 0 and doesn't modify *stringPtr otherwise.
+ */
+static int longCommandWArg(const char** stringPtr, const char* longCommand)
+{
+ size_t const comSize = strlen(longCommand);
+ int const result = !strncmp(*stringPtr, longCommand, comSize);
+ if (result) *stringPtr += comSize;
+ return result;
+}
+
+int main(int argc, const char** argv)
+{
+ U32 seed = 0;
+ int seedset = 0;
+ int argNb;
+ int nbTests = nbTestsDefault;
+ int testNb = 0;
+ int proba = FUZ_compressibility_default;
+ double probfloat;
+ int result = 0;
+ U32 mainPause = 0;
+ U32 maxDuration = 0;
+ int bigTests = 1;
+ int longTests = 0;
+ U32 memTestsOnly = 0;
+ const char* const programName = argv[0];
+
+ /* Check command line */
+ for (argNb=1; argNb<argc; argNb++) {
+ const char* argument = argv[argNb];
+ if(!argument) continue; /* Protection if argument empty */
+
+ /* Handle commands. Aggregated commands are allowed */
+ if (argument[0]=='-') {
+
+ if (longCommandWArg(&argument, "--memtest=")) { memTestsOnly = readU32FromChar(&argument); continue; }
+
+ if (!strcmp(argument, "--memtest")) { memTestsOnly=1; continue; }
+ if (!strcmp(argument, "--no-big-tests")) { bigTests=0; continue; }
+ if (!strcmp(argument, "--long-tests")) { longTests=1; continue; }
+ if (!strcmp(argument, "--no-long-tests")) { longTests=0; continue; }
+
+ argument++;
+ while (*argument!=0) {
+ switch(*argument)
+ {
+ case 'h':
+ return FUZ_usage(programName);
+
+ case 'v':
+ argument++;
+ g_displayLevel++;
+ break;
+
+ case 'q':
+ argument++;
+ g_displayLevel--;
+ break;
+
+ case 'p': /* pause at the end */
+ argument++;
+ mainPause = 1;
+ break;
+
+ case 'i':
+ argument++; maxDuration = 0;
+ nbTests = (int)readU32FromChar(&argument);
+ break;
+
+ case 'T':
+ argument++;
+ nbTests = 0;
+ maxDuration = readU32FromChar(&argument);
+ if (*argument=='s') argument++; /* seconds */
+ if (*argument=='m') maxDuration *= 60, argument++; /* minutes */
+ if (*argument=='n') argument++;
+ break;
+
+ case 's':
+ argument++;
+ seedset = 1;
+ seed = readU32FromChar(&argument);
+ break;
+
+ case 't':
+ argument++;
+ testNb = (int)readU32FromChar(&argument);
+ break;
+
+ case 'P': /* compressibility % */
+ argument++;
+ proba = (int)readU32FromChar(&argument);
+ if (proba>100) proba = 100;
+ break;
+
+ default:
+ return (FUZ_usage(programName), 1);
+ } } } } /* for (argNb=1; argNb<argc; argNb++) */
+
+ /* Get Seed */
+ DISPLAY("Starting zstd tester (%i-bits, %s)\n", (int)(sizeof(size_t)*8), ZSTD_VERSION_STRING);
+
+ if (!seedset) {
+ time_t const t = time(NULL);
+ U32 const h = XXH32(&t, sizeof(t), 1);
+ seed = h % 10000;
+ }
+
+ DISPLAY("Seed = %u\n", (unsigned)seed);
+ if (proba!=FUZ_compressibility_default) DISPLAY("Compressibility : %i%%\n", proba);
+
+ probfloat = ((double)proba) / 100;
+
+ if (memTestsOnly) {
+ g_displayLevel = MAX(3, g_displayLevel);
+ return FUZ_mallocTests(seed, probfloat, memTestsOnly);
+ }
+
+ if (nbTests < testNb) nbTests = testNb;
+
+ if (testNb==0) {
+ result = basicUnitTests(0, probfloat); /* constant seed for predictability */
+
+ if (!result && longTests) {
+ result = longUnitTests(0, probfloat);
+ }
+ }
+ if (!result)
+ result = fuzzerTests(seed, (unsigned)nbTests, (unsigned)testNb, maxDuration, ((double)proba) / 100, bigTests);
+ if (mainPause) {
+ int unused;
+ DISPLAY("Press Enter \n");
+ unused = getchar();
+ (void)unused;
+ }
+ return result;
+}
notaz.gp2x.de / pcsx_rearmed.git / blobdiff