X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=deps%2Flibchdr%2Fdeps%2Fzstd-1.5.5%2Ftests%2Fzstreamtest.c;fp=deps%2Flibchdr%2Fdeps%2Fzstd-1.5.5%2Ftests%2Fzstreamtest.c;h=14c4af82fb76c1fb5675829668cc70a3e17b72ed;hb=648db22b0750712da893c306efcc8e4b2d3a4e3c;hp=0000000000000000000000000000000000000000;hpb=e2fb1389dc12376acb84e4993ed3b08760257252;p=pcsx_rearmed.git diff --git a/deps/libchdr/deps/zstd-1.5.5/tests/zstreamtest.c b/deps/libchdr/deps/zstd-1.5.5/tests/zstreamtest.c new file mode 100644 index 00000000..14c4af82 --- /dev/null +++ b/deps/libchdr/deps/zstd-1.5.5/tests/zstreamtest.c @@ -0,0 +1,3236 @@ +/* + * 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 : 4146) /* disable: C4146: minus unsigned expression */ +#endif + + +/*-************************************ + * Includes + **************************************/ +#include /* free */ +#include /* fgets, sscanf */ +#include /* strcmp */ +#include /* time_t, time(), to randomize seed */ +#include /* assert */ +#include "timefn.h" /* UTIL_time_t, UTIL_getTime */ +#include "mem.h" +#define ZSTD_DISABLE_DEPRECATE_WARNINGS /* No deprecation warnings, we still test some deprecated functions */ +#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_maxCLevel, ZSTD_customMem, ZSTD_getDictID_fromFrame */ +#include "zstd.h" /* ZSTD_compressBound */ +#include "zstd_errors.h" /* ZSTD_error_srcSize_wrong */ +#include "zdict.h" /* ZDICT_trainFromBuffer */ +#include "datagen.h" /* RDG_genBuffer */ +#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */ +#include "xxhash.h" /* XXH64_* */ +#include "seqgen.h" +#include "util.h" +#include "timefn.h" /* UTIL_time_t, UTIL_clockSpanMicro, UTIL_getTime */ +#include "external_matchfinder.h" /* zstreamSequenceProducer, EMF_testCase */ + +/*-************************************ + * Constants + **************************************/ +#define KB *(1U<<10) +#define MB *(1U<<20) +#define GB *(1U<<30) + +static const int nbTestsDefault = 10000; +static const U32 g_cLevelMax_smallTests = 10; +#define COMPRESSIBLE_NOISE_LENGTH (10 MB) +#define FUZ_COMPRESSIBILITY_DEFAULT 50 +static const U32 prime32 = 2654435761U; + + +/*-************************************ + * Display Macros + **************************************/ +#define DISPLAY(...) fprintf(stderr, __VA_ARGS__) +#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { \ + DISPLAY(__VA_ARGS__); \ + if (g_displayLevel>=4) fflush(stderr); } +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); } } + +static U64 g_clockTime = 0; + + +/*-******************************************************* + * Check macros + *********************************************************/ +#undef MIN +#undef MAX +#define MIN(a,b) ((a)<(b)?(a):(b)) +#define MAX(a,b) ((a)>(b)?(a):(b)) +/*! FUZ_rand() : + @return : a 27 bits random value, from a 32-bits `seed`. + `seed` is also modified */ +#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r))) +static U32 FUZ_rand(U32* seedPtr) +{ + static const U32 prime2 = 2246822519U; + U32 rand32 = *seedPtr; + rand32 *= prime32; + rand32 += prime2; + rand32 = FUZ_rotl32(rand32, 13); + *seedPtr = rand32; + return rand32 >> 5; +} + +#define CHECK(cond, ...) { \ + if (cond) { \ + DISPLAY("Error => "); \ + DISPLAY(__VA_ARGS__); \ + DISPLAY(" (seed %u, test nb %u, line %u) \n", \ + (unsigned)seed, testNb, __LINE__); \ + goto _output_error; \ +} } + +#define CHECK_Z(f) { \ + size_t const err = f; \ + CHECK(ZSTD_isError(err), "%s : %s ", \ + #f, ZSTD_getErrorName(err)); \ +} + +#define CHECK_RET(ret, cond, ...) { \ + if (cond) { \ + DISPLAY("Error %llu => ", (unsigned long long)ret); \ + DISPLAY(__VA_ARGS__); \ + DISPLAY(" (line %u)\n", __LINE__); \ + return ret; \ +} } + +#define CHECK_RET_Z(f) { \ + size_t const err = f; \ + CHECK_RET(err, ZSTD_isError(err), "%s : %s ", \ + #f, ZSTD_getErrorName(err)); \ +} + + +/*====================================================== + * Basic Unit tests + *======================================================*/ + +typedef struct { + void* start; + size_t size; + size_t filled; +} buffer_t; + +static const buffer_t kBuffNull = { NULL, 0 , 0 }; + +static void FUZ_freeDictionary(buffer_t dict) +{ + free(dict.start); +} + +static buffer_t FUZ_createDictionary(const void* src, size_t srcSize, size_t blockSize, size_t requestedDictSize) +{ + buffer_t dict = kBuffNull; + size_t const nbBlocks = (srcSize + (blockSize-1)) / blockSize; + size_t* const blockSizes = (size_t*)malloc(nbBlocks * sizeof(size_t)); + if (!blockSizes) return kBuffNull; + dict.start = malloc(requestedDictSize); + if (!dict.start) { free(blockSizes); return kBuffNull; } + { size_t nb; + for (nb=0; nbcParams.windowLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_hashLog, (int*)&savedParams->cParams.hashLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_chainLog, (int*)&savedParams->cParams.chainLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_searchLog, (int*)&savedParams->cParams.searchLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_minMatch, (int*)&savedParams->cParams.minMatch)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_targetLength, (int*)&savedParams->cParams.targetLength)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_strategy, &value)); + savedParams->cParams.strategy = value; + + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_checksumFlag, &savedParams->fParams.checksumFlag)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_contentSizeFlag, &savedParams->fParams.contentSizeFlag)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_dictIDFlag, &value)); + savedParams->fParams.noDictIDFlag = !value; + return 0; +} + +static U32 badParameters(ZSTD_CCtx* zc, ZSTD_parameters const savedParams) +{ + ZSTD_parameters params; + if (ZSTD_isError(getCCtxParams(zc, ¶ms))) return 10; + CHECK_RET(1, params.cParams.windowLog != savedParams.cParams.windowLog, "windowLog"); + CHECK_RET(2, params.cParams.hashLog != savedParams.cParams.hashLog, "hashLog"); + CHECK_RET(3, params.cParams.chainLog != savedParams.cParams.chainLog, "chainLog"); + CHECK_RET(4, params.cParams.searchLog != savedParams.cParams.searchLog, "searchLog"); + CHECK_RET(5, params.cParams.minMatch != savedParams.cParams.minMatch, "minMatch"); + CHECK_RET(6, params.cParams.targetLength != savedParams.cParams.targetLength, "targetLength"); + + CHECK_RET(7, params.fParams.checksumFlag != savedParams.fParams.checksumFlag, "checksumFlag"); + CHECK_RET(8, params.fParams.contentSizeFlag != savedParams.fParams.contentSizeFlag, "contentSizeFlag"); + CHECK_RET(9, params.fParams.noDictIDFlag != savedParams.fParams.noDictIDFlag, "noDictIDFlag"); + return 0; +} + +static int basicUnitTests(U32 seed, double compressibility, int bigTests) +{ + size_t const CNBufferSize = COMPRESSIBLE_NOISE_LENGTH; + void* CNBuffer = malloc(CNBufferSize); + size_t const skippableFrameSize = 200 KB; + size_t const compressedBufferSize = (8 + skippableFrameSize) + ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH); + void* compressedBuffer = malloc(compressedBufferSize); + size_t const decodedBufferSize = CNBufferSize; + void* decodedBuffer = malloc(decodedBufferSize); + size_t cSize; + int testResult = 0; + int testNb = 1; + U32 coreSeed = 0; /* this name to conform with CHECK_Z macro display */ + ZSTD_CStream* zc = ZSTD_createCStream(); + ZSTD_DStream* zd = ZSTD_createDStream(); + ZSTD_CCtx* mtctx = ZSTD_createCCtx(); + + ZSTD_inBuffer inBuff, inBuff2; + ZSTD_outBuffer outBuff; + buffer_t dictionary = kBuffNull; + size_t const dictSize = 128 KB; + unsigned dictID = 0; + + /* Create compressible test buffer */ + if (!CNBuffer || !compressedBuffer || !decodedBuffer || !zc || !zd || !mtctx) { + DISPLAY("Not enough memory, aborting \n"); + goto _output_error; + } + RDG_genBuffer(CNBuffer, CNBufferSize, compressibility, 0., seed); + + CHECK_Z(ZSTD_CCtx_setParameter(mtctx, ZSTD_c_nbWorkers, 2)); + + /* Create dictionary */ + DISPLAYLEVEL(3, "creating dictionary for unit tests \n"); + dictionary = FUZ_createDictionary(CNBuffer, CNBufferSize / 3, 16 KB, 48 KB); + if (!dictionary.start) { + DISPLAY("Error creating dictionary, aborting \n"); + goto _output_error; + } + dictID = ZDICT_getDictID(dictionary.start, dictionary.filled); + + /* Basic compression test */ + DISPLAYLEVEL(3, "test%3i : compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + CHECK_Z( ZSTD_initCStream(zc, 1 /* cLevel */) ); + outBuff.dst = (char*)(compressedBuffer); + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + DISPLAYLEVEL(3, "OK (%u bytes)\n", (unsigned)outBuff.pos); + + /* generate skippable frame */ + MEM_writeLE32(compressedBuffer, ZSTD_MAGIC_SKIPPABLE_START); + MEM_writeLE32(((char*)compressedBuffer)+4, (U32)skippableFrameSize); + cSize = skippableFrameSize + 8; + + /* Basic compression test using dict */ + DISPLAYLEVEL(3, "test%3i : skipframe + compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) ); + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, CNBuffer, dictSize) ); + outBuff.dst = (char*)(compressedBuffer)+cSize; + assert(compressedBufferSize > cSize); + outBuff.size = compressedBufferSize - cSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + cSize += outBuff.pos; + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", + (unsigned)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100); + + /* context size functions */ + DISPLAYLEVEL(3, "test%3i : estimate CStream size : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictSize); + size_t const cstreamSize = ZSTD_estimateCStreamSize_usingCParams(cParams); + size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy); /* uses ZSTD_initCStream_usingDict() */ + if (ZSTD_isError(cstreamSize)) goto _output_error; + if (ZSTD_isError(cdictSize)) goto _output_error; + DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)(cstreamSize + cdictSize)); + } + + /* context size functions */ + DISPLAYLEVEL(3, "test%3i : estimate CStream size using CCtxParams : ", testNb++); + { ZSTD_CCtx_params* const params = ZSTD_createCCtxParams(); + size_t cstreamSize, cctxSize; + CHECK_Z( ZSTD_CCtxParams_setParameter(params, ZSTD_c_compressionLevel, 19) ); + cstreamSize = ZSTD_estimateCStreamSize_usingCCtxParams(params); + CHECK_Z(cstreamSize); + cctxSize = ZSTD_estimateCCtxSize_usingCCtxParams(params); + CHECK_Z(cctxSize); + if (cstreamSize <= cctxSize + 2 * ZSTD_BLOCKSIZE_MAX) goto _output_error; + ZSTD_freeCCtxParams(params); + DISPLAYLEVEL(3, "OK \n"); + } + + DISPLAYLEVEL(3, "test%3i : check actual CStream size : ", testNb++); + { size_t const s = ZSTD_sizeof_CStream(zc); + if (ZSTD_isError(s)) goto _output_error; + DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s); + } + + /* Attempt bad compression parameters */ + DISPLAYLEVEL(3, "test%3i : use bad compression parameters with ZSTD_initCStream_advanced : ", testNb++); + { size_t r; + ZSTD_parameters params = ZSTD_getParams(1, 0, 0); + params.cParams.minMatch = 2; + r = ZSTD_initCStream_advanced(zc, NULL, 0, params, 0); + if (!ZSTD_isError(r)) goto _output_error; + DISPLAYLEVEL(3, "init error : %s \n", ZSTD_getErrorName(r)); + } + + /* skippable frame test */ + DISPLAYLEVEL(3, "test%3i : decompress skippable frame : ", testNb++); + CHECK_Z( ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize) ); + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + { size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + DISPLAYLEVEL(5, " ( ZSTD_decompressStream => %u ) ", (unsigned)r); + if (r != 0) goto _output_error; + } + if (outBuff.pos != 0) goto _output_error; /* skippable frame output len is 0 */ + DISPLAYLEVEL(3, "OK \n"); + + /* Basic decompression test */ + inBuff2 = inBuff; + DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize); + CHECK_Z( ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, ZSTD_WINDOWLOG_LIMIT_DEFAULT+1) ); /* large limit */ + { size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */ + if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */ + if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */ + DISPLAYLEVEL(3, "OK \n"); + + /* Re-use without init */ + DISPLAYLEVEL(3, "test%3i : decompress again without init (re-use previous settings): ", testNb++); + outBuff.pos = 0; + { size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff2); + if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */ + if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */ + if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */ + DISPLAYLEVEL(3, "OK \n"); + + /* check regenerated data is byte exact */ + DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++); + { size_t i; + for (i=0; i would trigger a no_forward_progress error */ + inBuff.size = inBuff.pos + inSize; + outBuff.size = outBuff.pos + outSize; + r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(r)) DISPLAYLEVEL(4, "ZSTD_decompressStream error : %s \n", ZSTD_getErrorName(r)); + if (ZSTD_isError(r)) goto _output_error; + } + } + if (outBuff.pos != CNBufferSize) DISPLAYLEVEL(4, "outBuff.pos != CNBufferSize : should have regenerated same amount ! \n"); + if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */ + if (inBuff.pos != cSize) DISPLAYLEVEL(4, "inBuff.pos != cSize : should have real all input ! \n"); + if (inBuff.pos != cSize) goto _output_error; /* should have read the entire frame */ + DISPLAYLEVEL(3, "OK \n"); + + /* check regenerated data is byte exact */ + DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++); + { size_t i; + for (i=0; i 100 bytes */ + DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); } + ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters); /* leave zd in good shape for next tests */ + + DISPLAYLEVEL(3, "test%3i : dictionary source size and level : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + int const maxLevel = 16; /* first level with zstd_opt */ + int level; + assert(maxLevel < ZSTD_maxCLevel()); + CHECK_Z( ZSTD_DCtx_loadDictionary_byReference(dctx, dictionary.start, dictionary.filled) ); + for (level = 1; level <= maxLevel; ++level) { + ZSTD_CDict* const cdict = ZSTD_createCDict(dictionary.start, dictionary.filled, level); + size_t const maxSize = MIN(1 MB, CNBufferSize); + size_t size; + for (size = 512; size <= maxSize; size <<= 1) { + U64 const crcOrig = XXH64(CNBuffer, size, 0); + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_parameters savedParams; + getCCtxParams(cctx, &savedParams); + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = size; + inBuff.pos = 0; + CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict)); + CHECK_Z(ZSTD_compressStream2(cctx, &outBuff, &inBuff, ZSTD_e_end)); + CHECK(badParameters(cctx, savedParams), "Bad CCtx params"); + if (inBuff.pos != inBuff.size) goto _output_error; + { ZSTD_outBuffer decOut = {decodedBuffer, size, 0}; + ZSTD_inBuffer decIn = {outBuff.dst, outBuff.pos, 0}; + CHECK_Z( ZSTD_decompressStream(dctx, &decOut, &decIn) ); + if (decIn.pos != decIn.size) goto _output_error; + if (decOut.pos != size) goto _output_error; + { U64 const crcDec = XXH64(decOut.dst, decOut.pos, 0); + if (crcDec != crcOrig) goto _output_error; + } } + ZSTD_freeCCtx(cctx); + } + ZSTD_freeCDict(cdict); + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK\n"); + + ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dictionary.start, dictionary.filled) ); + cSize = ZSTD_compress2(zc, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBufferSize, 100 KB)); + CHECK_Z(cSize); + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() with dictionary : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + /* We should fail to decompress without a dictionary. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + 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, dictionary.start, dictionary.filled) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should persist across calls. */ + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should not be cleared by ZSTD_reset_session_only. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* When we reset the context the dictionary is cleared. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + if (!ZSTD_isError(ret)) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_resetDStream() with dictionary : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + /* We should succeed to decompress with the dictionary. */ + ZSTD_resetDStream(dctx); + CHECK_Z( ZSTD_DCtx_loadDictionary(dctx, dictionary.start, dictionary.filled) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should not be cleared by ZSTD_resetDStream(). */ + ZSTD_resetDStream(dctx); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should be cleared by ZSTD_initDStream(). */ + CHECK_Z( ZSTD_initDStream(dctx) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + if (!ZSTD_isError(ret)) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() with ddict : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + ZSTD_DDict* ddict = ZSTD_createDDict(dictionary.start, dictionary.filled); + /* We should succeed to decompress with the ddict. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_DCtx_refDDict(dctx, ddict) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The ddict should persist across calls. */ + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* When we reset the context the ddict is cleared. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + 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(); + /* We should succeed to decompress with the prefix. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_DCtx_refPrefix_advanced(dctx, dictionary.start, dictionary.filled, ZSTD_dct_auto) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The prefix should be cleared after the first compression. */ + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + if (!ZSTD_isError(ret)) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initDStream*() with dictionary : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + ZSTD_DDict* ddict = ZSTD_createDDict(dictionary.start, dictionary.filled); + size_t ret; + /* We should succeed to decompress with the dictionary. */ + CHECK_Z( ZSTD_initDStream_usingDict(dctx, dictionary.start, dictionary.filled) ); + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* The dictionary should persist across calls. */ + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* We should succeed to decompress with the ddict. */ + CHECK_Z( ZSTD_initDStream_usingDDict(dctx, ddict) ); + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* The ddict should persist across calls. */ + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* When we reset the context the ddict is cleared. */ + CHECK_Z( ZSTD_initDStream(dctx) ); + ret = ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize); + if (!ZSTD_isError(ret)) goto _output_error; + ZSTD_freeDCtx(dctx); + ZSTD_freeDDict(ddict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_usingCDict_advanced with masked dictID : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictionary.filled); + ZSTD_frameParameters const fParams = { 1 /* contentSize */, 1 /* checksum */, 1 /* noDictID */}; + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, ZSTD_dlm_byRef, ZSTD_dct_auto, cParams, ZSTD_defaultCMem); + size_t const initError = ZSTD_initCStream_usingCDict_advanced(zc, cdict, fParams, CNBufferSize); + if (ZSTD_isError(initError)) goto _output_error; + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + cSize = outBuff.pos; + ZSTD_freeCDict(cdict); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBufferSize*100); + } + + DISPLAYLEVEL(3, "test%3i : try retrieving dictID from frame : ", testNb++); + { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize); + if (did != 0) goto _output_error; + } + DISPLAYLEVEL(3, "OK (not detected) \n"); + + DISPLAYLEVEL(3, "test%3i : decompress without dictionary : ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize); + if (!ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */ + DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); + } + + DISPLAYLEVEL(3, "test%3i : compress with ZSTD_CCtx_refPrefix : ", testNb++); + CHECK_Z( ZSTD_CCtx_refPrefix(zc, dictionary.start, dictionary.filled) ); + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + cSize = outBuff.pos; + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBufferSize*100); + + DISPLAYLEVEL(3, "test%3i : decompress with ZSTD_DCtx_refPrefix : ", testNb++); + CHECK_Z( ZSTD_DCtx_refPrefix(zd, dictionary.start, dictionary.filled) ); + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_decompressStream(zd, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + if (outBuff.pos != CNBufferSize) goto _output_error; /* must regenerate whole input */ + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress without dictionary (should fail): ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize); + if (!ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */ + DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); + } + + DISPLAYLEVEL(3, "test%3i : compress again with ZSTD_compressStream2 : ", testNb++); + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + cSize = outBuff.pos; + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBufferSize*100); + + DISPLAYLEVEL(3, "test%3i : decompress without dictionary (should work): ", testNb++); + CHECK_Z( ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize) ); + DISPLAYLEVEL(3, "OK \n"); + + /* Empty srcSize */ + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_advanced with pledgedSrcSize=0 and dict : ", testNb++); + { ZSTD_parameters params = ZSTD_getParams(5, 0, 0); + params.fParams.contentSizeFlag = 1; + CHECK_Z( ZSTD_initCStream_advanced(zc, dictionary.start, dictionary.filled, params, 0 /* pledgedSrcSize==0 means "empty" when params.fParams.contentSizeFlag is set */) ); + } /* cstream advanced shall write content size = 0 */ + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = 0; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; + cSize = outBuff.pos; + if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : pledgedSrcSize == 0 behaves properly with ZSTD_initCStream_advanced : ", testNb++); + { ZSTD_parameters params = ZSTD_getParams(5, 0, 0); + params.fParams.contentSizeFlag = 1; + CHECK_Z( ZSTD_initCStream_advanced(zc, NULL, 0, params, 0) ); + } /* cstream advanced shall write content size = 0 */ + inBuff.src = CNBuffer; + inBuff.size = 0; + inBuff.pos = 0; + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; + cSize = outBuff.pos; + if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error; + + CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) ); + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, ZSTD_CONTENTSIZE_UNKNOWN) ); + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = 0; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; + cSize = outBuff.pos; + if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + /* Basic multithreading compression test */ + DISPLAYLEVEL(3, "test%3i : compress %u bytes with multiple threads : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + { int jobSize; + CHECK_Z( ZSTD_CCtx_getParameter(mtctx, ZSTD_c_jobSize, &jobSize)); + CHECK(jobSize != 0, "job size non-zero"); + CHECK_Z( ZSTD_CCtx_getParameter(mtctx, ZSTD_c_jobSize, &jobSize)); + CHECK(jobSize != 0, "job size non-zero"); + } + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + { size_t const compressResult = ZSTD_compressStream2(mtctx, &outBuff, &inBuff, ZSTD_e_end); + if (compressResult != 0) goto _output_error; /* compression must be completed in a single round */ + } + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const compressedSize = ZSTD_findFrameCompressedSize(compressedBuffer, outBuff.pos); + if (compressedSize != outBuff.pos) goto _output_error; /* must be a full valid frame */ + } + DISPLAYLEVEL(3, "OK \n"); + + /* Complex multithreading + dictionary test */ + { U32 const nbWorkers = 2; + size_t const jobSize = 4 * 1 MB; + size_t const srcSize = jobSize * nbWorkers; /* we want each job to have predictable size */ + size_t const segLength = 2 KB; + size_t const offset = 600 KB; /* must be larger than window defined in cdict */ + size_t const start = jobSize + (offset-1); + const BYTE* const srcToCopy = (const BYTE*)CNBuffer + start; + BYTE* const dst = (BYTE*)CNBuffer + start - offset; + DISPLAYLEVEL(3, "test%3i : compress %u bytes with multiple threads + dictionary : ", testNb++, (unsigned)srcSize); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 3) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_nbWorkers, nbWorkers) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_jobSize, jobSize) ); + assert(start > offset); + assert(start + segLength < COMPRESSIBLE_NOISE_LENGTH); + memcpy(dst, srcToCopy, segLength); /* create a long repetition at long distance for job 2 */ + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = srcSize; assert(srcSize < COMPRESSIBLE_NOISE_LENGTH); + inBuff.pos = 0; + } + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, 4 KB, dictionary.filled); /* intentionally lies on estimatedSrcSize, to push cdict into targeting a small window size */ + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem); + DISPLAYLEVEL(5, "cParams.windowLog = %u : ", cParams.windowLog); + CHECK_Z( ZSTD_CCtx_refCDict(zc, cdict) ); + CHECK_Z( ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end) ); + CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) ); /* do not keep a reference to cdict, as its lifetime ends */ + ZSTD_freeCDict(cdict); + } + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + cSize = outBuff.pos; + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress large frame created from multiple threads + dictionary : ", testNb++); + { ZSTD_DStream* const dstream = ZSTD_createDCtx(); + ZSTD_frameHeader zfh; + ZSTD_getFrameHeader(&zfh, compressedBuffer, cSize); + DISPLAYLEVEL(5, "frame windowsize = %u : ", (unsigned)zfh.windowSize); + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + inBuff.src = compressedBuffer; + inBuff.pos = 0; + CHECK_Z( ZSTD_initDStream_usingDict(dstream, dictionary.start, dictionary.filled) ); + inBuff.size = 1; /* avoid shortcut to single-pass mode */ + CHECK_Z( ZSTD_decompressStream(dstream, &outBuff, &inBuff) ); + inBuff.size = cSize; + CHECK_Z( ZSTD_decompressStream(dstream, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + ZSTD_freeDStream(dstream); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : check dictionary FSE tables can represent every code : ", testNb++); + { unsigned const kMaxWindowLog = 24; + unsigned value; + ZSTD_compressionParameters cParams = ZSTD_getCParams(3, 1U << kMaxWindowLog, 1024); + ZSTD_CDict* cdict; + ZSTD_DDict* ddict; + SEQ_stream seq = SEQ_initStream(0x87654321); + SEQ_gen_type type; + XXH64_state_t xxh; + + XXH64_reset(&xxh, 0); + cParams.windowLog = kMaxWindowLog; + cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem); + ddict = ZSTD_createDDict(dictionary.start, dictionary.filled); + + if (!cdict || !ddict) goto _output_error; + + ZSTD_CCtx_reset(zc, ZSTD_reset_session_only); + ZSTD_resetDStream(zd); + CHECK_Z(ZSTD_CCtx_refCDict(zc, cdict)); + CHECK_Z(ZSTD_initDStream_usingDDict(zd, ddict)); + CHECK_Z(ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, kMaxWindowLog)); + /* Test all values < 300 */ + for (value = 0; value < 300; ++value) { + for (type = (SEQ_gen_type)0; type < SEQ_gen_max; ++type) { + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, type, value)); + } + } + /* Test values 2^8 to 2^17 */ + for (value = (1 << 8); value < (1 << 17); value <<= 1) { + for (type = (SEQ_gen_type)0; type < SEQ_gen_max; ++type) { + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, type, value)); + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, type, value + (value >> 2))); + } + } + /* Test offset values up to the max window log */ + for (value = 8; value <= kMaxWindowLog; ++value) { + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, SEQ_gen_of, (1U << value) - 1)); + } + + CHECK_Z(SEQ_roundTrip(zc, zd, &xxh, NULL, 0, ZSTD_e_end)); + CHECK(SEQ_digest(&seq) != XXH64_digest(&xxh), "SEQ XXH64 does not match"); + + ZSTD_freeCDict(cdict); + ZSTD_freeDDict(ddict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_srcSize sets requestedParams : ", testNb++); + { int level; + CHECK_Z(ZSTD_initCStream_srcSize(zc, 11, ZSTD_CONTENTSIZE_UNKNOWN)); + CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_compressionLevel, &level)); + CHECK(level != 11, "Compression level does not match"); + CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) ); + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, ZSTD_CONTENTSIZE_UNKNOWN) ); + CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_compressionLevel, &level)); + CHECK(level != 11, "Compression level does not match"); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_advanced sets requestedParams : ", testNb++); + { ZSTD_parameters const params = ZSTD_getParams(9, 0, 0); + CHECK_Z(ZSTD_initCStream_advanced(zc, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN)); + CHECK(badParameters(zc, params), "Compression parameters do not match"); + CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) ); + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, ZSTD_CONTENTSIZE_UNKNOWN) ); + CHECK(badParameters(zc, params), "Compression parameters do not match"); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_c_srcSizeHint bounds : ", testNb++); + ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_srcSizeHint, INT_MAX)); + { int srcSizeHint; + CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_srcSizeHint, &srcSizeHint)); + CHECK(!(srcSizeHint == INT_MAX), "srcSizeHint doesn't match"); + } + CHECK(!ZSTD_isError(ZSTD_CCtx_setParameter(zc, ZSTD_c_srcSizeHint, -1)), "Out of range doesn't error"); + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_lazy compress with hashLog = 29 and searchLog = 4 : ", testNb++); + if (MEM_64bits()) { + ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize, 0 }; + ZSTD_inBuffer in = { CNBuffer, CNBufferSize, 0 }; + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_strategy, ZSTD_lazy)); + /* Force enable the row based match finder */ + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_useRowMatchFinder, ZSTD_ps_enable)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_searchLog, 4)); + /* Set windowLog to 29 so the hashLog doesn't get sized down */ + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_windowLog, 29)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_hashLog, 29)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, 1)); + /* Compress with continue first so the hashLog doesn't get sized down */ + CHECK_Z(ZSTD_compressStream2(zc, &out, &in, ZSTD_e_continue)); + CHECK_Z(ZSTD_compressStream2(zc, &out, &in, ZSTD_e_end)); + cSize = out.pos; + CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize)); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Test offset == windowSize : ", testNb++); + { + int windowLog; + int const kMaxWindowLog = bigTests ? 29 : 26; + size_t const kNbSequences = 10000; + size_t const kMaxSrcSize = (1u << kMaxWindowLog) + 10 * kNbSequences; + char* src = calloc(kMaxSrcSize, 1); + ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences); + for (windowLog = ZSTD_WINDOWLOG_MIN; windowLog <= kMaxWindowLog; ++windowLog) { + size_t const srcSize = ((size_t)1 << windowLog) + 10 * (kNbSequences - 1); + + sequences[0].offset = 32; + sequences[0].litLength = 32; + sequences[0].matchLength = (1u << windowLog) - 32; + sequences[0].rep = 0; + { + size_t i; + for (i = 1; i < kNbSequences; ++i) { + sequences[i].offset = (1u << windowLog) - (FUZ_rand(&seed) % 8); + sequences[i].litLength = FUZ_rand(&seed) & 7; + sequences[i].matchLength = 10 - sequences[i].litLength; + sequences[i].rep = 0; + } + } + + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, 1)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_minMatch, 3)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_validateSequences, 1)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_windowLog, windowLog)); + assert(srcSize <= kMaxSrcSize); + cSize = ZSTD_compressSequences(zc, compressedBuffer, compressedBufferSize, sequences, kNbSequences, src, srcSize); + CHECK_Z(cSize); + CHECK_Z(ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters)); + CHECK_Z(ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, windowLog)) + { + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t decompressedBytes = 0; + for (;;) { + ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + size_t const ret = ZSTD_decompressStream(zd, &out, &in); + CHECK_Z(ret); + CHECK(decompressedBytes + out.pos > srcSize, "Output too large"); + CHECK(memcmp(out.dst, src + decompressedBytes, out.pos), "Corrupted"); + decompressedBytes += out.pos; + if (ret == 0) { + break; + } + } + CHECK(decompressedBytes != srcSize, "Output wrong size"); + } + } + free(sequences); + free(src); + } + DISPLAYLEVEL(3, "OK \n"); + + /* Overlen overwriting window data bug */ + DISPLAYLEVEL(3, "test%3i : wildcopy doesn't overwrite potential match data : ", testNb++); + { /* This test has a window size of 1024 bytes and consists of 3 blocks: + 1. 'a' repeated 517 times + 2. 'b' repeated 516 times + 3. a compressed block with no literals and 3 sequence commands: + litlength = 0, offset = 24, match length = 24 + litlength = 0, offset = 24, match length = 3 (this one creates an overlength write of length 2*WILDCOPY_OVERLENGTH - 3) + litlength = 0, offset = 1021, match length = 3 (this one will try to read from overwritten data if the buffer is too small) */ + + const char* testCase = + "\x28\xB5\x2F\xFD\x04\x00\x4C\x00\x00\x10\x61\x61\x01\x00\x00\x2A" + "\x80\x05\x44\x00\x00\x08\x62\x01\x00\x00\x2A\x20\x04\x5D\x00\x00" + "\x00\x03\x40\x00\x00\x64\x60\x27\xB0\xE0\x0C\x67\x62\xCE\xE0"; + ZSTD_DStream* const zds = ZSTD_createDStream(); + if (zds==NULL) goto _output_error; + + CHECK_Z( ZSTD_initDStream(zds) ); + inBuff.src = testCase; + inBuff.size = 47; + inBuff.pos = 0; + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + + while (inBuff.pos < inBuff.size) { + CHECK_Z( ZSTD_decompressStream(zds, &outBuff, &inBuff) ); + } + + ZSTD_freeDStream(zds); + } + DISPLAYLEVEL(3, "OK \n"); + + /* Small Sequence Section bug */ + DISPLAYLEVEL(3, "test%3i : decompress blocks with small sequences section : ", testNb++); + { /* This test consists of 3 blocks. Each block has one sequence. + The sequence has literal length of 10, match length of 10 and offset of 10. + The sequence value and compression mode for the blocks are following: + The order of values are ll, ml, of. + - First block : (10, 7, 13) (rle, rle, rle) + - size of sequences section: 6 bytes (1 byte for nbSeq, 1 byte for encoding mode, 3 bytes for rle, 1 byte bitstream) + - Second block : (10, 7, 1) (repeat, repeat, rle) + - size of sequences section: 4 bytes (1 byte for nbSeq, 1 byte for encoding mode, 1 bytes for rle, 1 byte bitstream) + - Third block : (10, 7, 1) (repeat, repeat, repeat) + - size of sequences section: 3 bytes (1 byte for nbSeq, 1 byte for encoding mode, 1 byte bitstream) */ + + unsigned char compressed[] = { + 0x28, 0xb5, 0x2f, 0xfd, 0x24, 0x3c, 0x35, 0x01, 0x00, 0xf0, 0x85, 0x08, + 0xc2, 0xc4, 0x70, 0xcf, 0xd7, 0xc0, 0x96, 0x7e, 0x4c, 0x6b, 0xa9, 0x8b, + 0xbc, 0xc5, 0xb6, 0xd9, 0x7f, 0x4c, 0xf1, 0x05, 0xa6, 0x54, 0xef, 0xac, + 0x69, 0x94, 0x89, 0x1c, 0x03, 0x44, 0x0a, 0x07, 0x00, 0xb4, 0x04, 0x80, + 0x40, 0x0a, 0xa4 + }; + unsigned int compressedSize = 51; + unsigned char decompressed[] = { + 0x85, 0x08, 0xc2, 0xc4, 0x70, 0xcf, 0xd7, 0xc0, 0x96, 0x7e, 0x85, 0x08, + 0xc2, 0xc4, 0x70, 0xcf, 0xd7, 0xc0, 0x96, 0x7e, 0x4c, 0x6b, 0xa9, 0x8b, + 0xbc, 0xc5, 0xb6, 0xd9, 0x7f, 0x4c, 0x4c, 0x6b, 0xa9, 0x8b, 0xbc, 0xc5, + 0xb6, 0xd9, 0x7f, 0x4c, 0xf1, 0x05, 0xa6, 0x54, 0xef, 0xac, 0x69, 0x94, + 0x89, 0x1c, 0xf1, 0x05, 0xa6, 0x54, 0xef, 0xac, 0x69, 0x94, 0x89, 0x1c + }; + unsigned int decompressedSize = 60; + + ZSTD_DStream* const zds = ZSTD_createDStream(); + if (zds==NULL) goto _output_error; + + CHECK_Z( ZSTD_initDStream(zds) ); + inBuff.src = compressed; + inBuff.size = compressedSize; + inBuff.pos = 0; + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + + CHECK(ZSTD_decompressStream(zds, &outBuff, &inBuff) != 0, + "Decompress did not reach the end of frame"); + CHECK(inBuff.pos != inBuff.size, "Decompress did not fully consume input"); + CHECK(outBuff.pos != decompressedSize, "Decompressed size does not match"); + CHECK(memcmp(outBuff.dst, decompressed, decompressedSize) != 0, + "Decompressed data does not match"); + + ZSTD_freeDStream(zds); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : raw block can be streamed: ", testNb++); + { size_t const inputSize = 10000; + size_t const compCapacity = ZSTD_compressBound(inputSize); + BYTE* const input = (BYTE*)malloc(inputSize); + BYTE* const comp = (BYTE*)malloc(compCapacity); + BYTE* const decomp = (BYTE*)malloc(inputSize); + + CHECK(input == NULL || comp == NULL || decomp == NULL, "failed to alloc buffers"); + + RDG_genBuffer(input, inputSize, 0.0, 0.0, seed); + { size_t const compSize = ZSTD_compress(comp, compCapacity, input, inputSize, -(int)inputSize); + ZSTD_inBuffer in = { comp, 0, 0 }; + ZSTD_outBuffer out = { decomp, 0, 0 }; + CHECK_Z(compSize); + CHECK_Z( ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters) ); + while (in.size < compSize) { + in.size = MIN(in.size + 100, compSize); + while (in.pos < in.size) { + size_t const outPos = out.pos; + if (out.pos == out.size) { + out.size = MIN(out.size + 10, inputSize); + } + CHECK_Z( ZSTD_decompressStream(zd, &out, &in) ); + CHECK(!(out.pos > outPos), "We are not streaming (no output generated)"); + } + } + CHECK(in.pos != compSize, "Not all input consumed!"); + CHECK(out.pos != inputSize, "Not all output produced!"); + } + CHECK(memcmp(input, decomp, inputSize), "round trip failed!"); + + free(input); + free(comp); + free(decomp); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : dictionary + uncompressible block + reusing tables checks offset table validity: ", testNb++); + { ZSTD_CDict* const cdict = ZSTD_createCDict_advanced( + dictionary.start, dictionary.filled, + ZSTD_dlm_byRef, ZSTD_dct_fullDict, + ZSTD_getCParams(3, 0, dictionary.filled), + ZSTD_defaultCMem); + const size_t inbufsize = 2 * 128 * 1024; /* 2 blocks */ + const size_t outbufsize = ZSTD_compressBound(inbufsize); + size_t inbufpos = 0; + size_t cursegmentlen; + BYTE *inbuf = (BYTE *)malloc(inbufsize); + BYTE *outbuf = (BYTE *)malloc(outbufsize); + BYTE *checkbuf = (BYTE *)malloc(inbufsize); + size_t ret; + + CHECK(cdict == NULL, "failed to alloc cdict"); + CHECK(inbuf == NULL, "failed to alloc input buffer"); + + /* first block is uncompressible */ + cursegmentlen = 128 * 1024; + RDG_genBuffer(inbuf + inbufpos, cursegmentlen, 0., 0., seed); + inbufpos += cursegmentlen; + + /* second block is compressible */ + cursegmentlen = 128 * 1024 - 256; + RDG_genBuffer(inbuf + inbufpos, cursegmentlen, 0.05, 0., seed); + inbufpos += cursegmentlen; + + /* and includes a very long backref */ + cursegmentlen = 128; + memcpy(inbuf + inbufpos, (BYTE*)dictionary.start + 256, cursegmentlen); + inbufpos += cursegmentlen; + + /* and includes a very long backref */ + cursegmentlen = 128; + memcpy(inbuf + inbufpos, (BYTE*)dictionary.start + 128, cursegmentlen); + inbufpos += cursegmentlen; + + ret = ZSTD_compress_usingCDict(zc, outbuf, outbufsize, inbuf, inbufpos, cdict); + CHECK_Z(ret); + + ret = ZSTD_decompress_usingDict(zd, checkbuf, inbufsize, outbuf, ret, dictionary.start, dictionary.filled); + CHECK_Z(ret); + + CHECK(memcmp(inbuf, checkbuf, inbufpos), "start and finish buffers don't match"); + + ZSTD_freeCDict(cdict); + free(inbuf); + free(outbuf); + free(checkbuf); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : dictionary + small blocks + reusing tables checks offset table validity: ", testNb++); + { ZSTD_CDict* const cdict = ZSTD_createCDict_advanced( + dictionary.start, dictionary.filled, + ZSTD_dlm_byRef, ZSTD_dct_fullDict, + ZSTD_getCParams(3, 0, dictionary.filled), + ZSTD_defaultCMem); + ZSTD_outBuffer out = {compressedBuffer, compressedBufferSize, 0}; + int remainingInput = 256 * 1024; + int offset; + + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + CHECK_Z(ZSTD_CCtx_refCDict(zc, cdict)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, 1)); + /* Write a bunch of 6 byte blocks */ + while (remainingInput > 0) { + char testBuffer[6] = "\xAA\xAA\xAA\xAA\xAA\xAA"; + const size_t kSmallBlockSize = sizeof(testBuffer); + ZSTD_inBuffer in = {testBuffer, kSmallBlockSize, 0}; + + CHECK_Z(ZSTD_compressStream2(zc, &out, &in, ZSTD_e_flush)); + CHECK(in.pos != in.size, "input not fully consumed"); + remainingInput -= kSmallBlockSize; + } + /* Write several very long offset matches into the dictionary */ + for (offset = 1024; offset >= 0; offset -= 128) { + ZSTD_inBuffer in = {(BYTE*)dictionary.start + offset, 128, 0}; + ZSTD_EndDirective flush = offset > 0 ? ZSTD_e_continue : ZSTD_e_end; + CHECK_Z(ZSTD_compressStream2(zc, &out, &in, flush)); + CHECK(in.pos != in.size, "input not fully consumed"); + } + /* Ensure decompression works */ + CHECK_Z(ZSTD_decompress_usingDict(zd, decodedBuffer, CNBufferSize, out.dst, out.pos, dictionary.start, dictionary.filled)); + + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Block-Level External Sequence Producer API: ", testNb++); + { + size_t const dstBufSize = ZSTD_compressBound(CNBufferSize); + BYTE* const dstBuf = (BYTE*)malloc(ZSTD_compressBound(dstBufSize)); + size_t const checkBufSize = CNBufferSize; + BYTE* const checkBuf = (BYTE*)malloc(checkBufSize); + int enableFallback; + EMF_testCase sequenceProducerState; + + CHECK(dstBuf == NULL || checkBuf == NULL, "allocation failed"); + + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + + /* Reference external matchfinder outside the test loop to + * check that the reference is preserved across compressions */ + ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer); + + for (enableFallback = 0; enableFallback <= 1; enableFallback++) { + size_t testCaseId; + size_t const numTestCases = 9; + + EMF_testCase const testCases[] = { + EMF_ONE_BIG_SEQ, + EMF_LOTS_OF_SEQS, + EMF_ZERO_SEQS, + EMF_BIG_ERROR, + EMF_SMALL_ERROR, + EMF_INVALID_OFFSET, + EMF_INVALID_MATCHLEN, + EMF_INVALID_LITLEN, + EMF_INVALID_LAST_LITS + }; + + ZSTD_ErrorCode const errorCodes[] = { + ZSTD_error_no_error, + ZSTD_error_no_error, + ZSTD_error_sequenceProducer_failed, + ZSTD_error_sequenceProducer_failed, + ZSTD_error_sequenceProducer_failed, + ZSTD_error_externalSequences_invalid, + ZSTD_error_externalSequences_invalid, + ZSTD_error_externalSequences_invalid, + ZSTD_error_externalSequences_invalid + }; + + for (testCaseId = 0; testCaseId < numTestCases; testCaseId++) { + size_t res; + + int const compressionShouldSucceed = ( + (errorCodes[testCaseId] == ZSTD_error_no_error) || + (enableFallback && errorCodes[testCaseId] == ZSTD_error_sequenceProducer_failed) + ); + + int const testWithSequenceValidation = ( + testCases[testCaseId] == EMF_INVALID_OFFSET + ); + + sequenceProducerState = testCases[testCaseId]; + + ZSTD_CCtx_reset(zc, ZSTD_reset_session_only); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_validateSequences, testWithSequenceValidation)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, enableFallback)); + res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize); + + if (compressionShouldSucceed) { + CHECK(ZSTD_isError(res), "EMF: Compression error: %s", ZSTD_getErrorName(res)); + CHECK_Z(ZSTD_decompress(checkBuf, checkBufSize, dstBuf, res)); + CHECK(memcmp(CNBuffer, checkBuf, CNBufferSize) != 0, "EMF: Corruption!"); + } else { + CHECK(!ZSTD_isError(res), "EMF: Should have raised an error!"); + CHECK( + ZSTD_getErrorCode(res) != errorCodes[testCaseId], + "EMF: Wrong error code: %s", ZSTD_getErrorName(res) + ); + } + } + + /* Test compression with external matchfinder + empty src buffer */ + { + size_t res; + sequenceProducerState = EMF_ZERO_SEQS; + ZSTD_CCtx_reset(zc, ZSTD_reset_session_only); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, enableFallback)); + res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, 0); + CHECK(ZSTD_isError(res), "EMF: Compression error: %s", ZSTD_getErrorName(res)); + CHECK(ZSTD_decompress(checkBuf, checkBufSize, dstBuf, res) != 0, "EMF: Empty src round trip failed!"); + } + } + + /* Test that reset clears the external matchfinder */ + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + sequenceProducerState = EMF_BIG_ERROR; /* ensure zstd will fail if the matchfinder wasn't cleared */ + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, 0)); + CHECK_Z(ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize)); + + /* Test that registering mFinder == NULL clears the external matchfinder */ + ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters); + ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer); + sequenceProducerState = EMF_BIG_ERROR; /* ensure zstd will fail if the matchfinder wasn't cleared */ + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, 0)); + ZSTD_registerSequenceProducer(zc, NULL, NULL); /* clear the external matchfinder */ + CHECK_Z(ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize)); + + /* Test that external matchfinder doesn't interact with older APIs */ + ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters); + ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer); + sequenceProducerState = EMF_BIG_ERROR; /* ensure zstd will fail if the matchfinder is used */ + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, 0)); + CHECK_Z(ZSTD_compressCCtx(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize, 3)); + + /* Test that compression returns the correct error with LDM */ + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + { + size_t res; + ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable)); + res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize); + CHECK(!ZSTD_isError(res), "EMF: Should have raised an error!"); + CHECK( + ZSTD_getErrorCode(res) != ZSTD_error_parameter_combination_unsupported, + "EMF: Wrong error code: %s", ZSTD_getErrorName(res) + ); + } + +#ifdef ZSTD_MULTITHREAD + /* Test that compression returns the correct error with nbWorkers > 0 */ + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + { + size_t res; + ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_nbWorkers, 1)); + res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize); + CHECK(!ZSTD_isError(res), "EMF: Should have raised an error!"); + CHECK( + ZSTD_getErrorCode(res) != ZSTD_error_parameter_combination_unsupported, + "EMF: Wrong error code: %s", ZSTD_getErrorName(res) + ); + } +#endif + + free(dstBuf); + free(checkBuf); + } + DISPLAYLEVEL(3, "OK \n"); + + + /* Test maxBlockSize cctx param functionality */ + DISPLAYLEVEL(3, "test%3i : Testing maxBlockSize PR#3418: ", testNb++); + { + ZSTD_CCtx* cctx = ZSTD_createCCtx(); + + /* Quick test to make sure maxBlockSize bounds are enforced */ + assert(ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, ZSTD_BLOCKSIZE_MAX_MIN - 1))); + assert(ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, ZSTD_BLOCKSIZE_MAX + 1))); + + /* Test maxBlockSize < windowSize and windowSize < maxBlockSize*/ + { + size_t srcSize = 2 << 10; + void* const src = CNBuffer; + size_t dstSize = ZSTD_compressBound(srcSize); + void* const dst1 = compressedBuffer; + void* const dst2 = (BYTE*)compressedBuffer + dstSize; + size_t size1, size2; + void* const checkBuf = malloc(srcSize); + memset(src, 'x', srcSize); + + /* maxBlockSize = 1KB */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 1u << 10)); + size1 = ZSTD_compress2(cctx, dst1, dstSize, src, srcSize); + + if (ZSTD_isError(size1)) goto _output_error; + CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst1, size1)); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + + /* maxBlockSize = 3KB */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 3u << 10)); + size2 = ZSTD_compress2(cctx, dst2, dstSize, src, srcSize); + + if (ZSTD_isError(size2)) goto _output_error; + CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst2, size2)); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + + assert(size1 - size2 == 4); /* We add another RLE block with header + character */ + assert(memcmp(dst1, dst2, size2) != 0); /* Compressed output should not be equal */ + + /* maxBlockSize = 1KB, windowLog = 10 */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 1u << 10)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 10)); + size1 = ZSTD_compress2(cctx, dst1, dstSize, src, srcSize); + + if (ZSTD_isError(size1)) goto _output_error; + CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst1, size1)); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + + /* maxBlockSize = 3KB, windowLog = 10 */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 3u << 10)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 10)); + size2 = ZSTD_compress2(cctx, dst2, dstSize, src, srcSize); + + if (ZSTD_isError(size2)) goto _output_error; + CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst2, size2)); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + + assert(size1 == size2); + assert(memcmp(dst1, dst2, size1) == 0); /* Compressed output should be equal */ + + free(checkBuf); + } + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + + /* Test maxBlockSize = 0 is valid */ + { size_t srcSize = 256 << 10; + void* const src = CNBuffer; + size_t dstSize = ZSTD_compressBound(srcSize); + void* const dst1 = compressedBuffer; + void* const dst2 = (BYTE*)compressedBuffer + dstSize; + size_t size1, size2; + void* const checkBuf = malloc(srcSize); + + /* maxBlockSize = 0 */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 0)); + size1 = ZSTD_compress2(cctx, dst1, dstSize, src, srcSize); + + if (ZSTD_isError(size1)) goto _output_error; + CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst1, size1)); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + + /* maxBlockSize = ZSTD_BLOCKSIZE_MAX */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, ZSTD_BLOCKSIZE_MAX)); + size2 = ZSTD_compress2(cctx, dst2, dstSize, src, srcSize); + + if (ZSTD_isError(size2)) goto _output_error; + CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst2, size2)); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + + assert(size1 == size2); + assert(memcmp(dst1, dst2, size1) == 0); /* Compressed output should be equal */ + free(checkBuf); + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + /* Test Sequence Validation */ + DISPLAYLEVEL(3, "test%3i : Testing sequence validation: ", testNb++); + { + ZSTD_CCtx* cctx = ZSTD_createCCtx(); + + /* Test minMatch >= 4, matchLength < 4 */ + { + size_t srcSize = 11; + void* const src = CNBuffer; + size_t dstSize = ZSTD_compressBound(srcSize); + void* const dst = compressedBuffer; + size_t const kNbSequences = 4; + ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences); + + memset(src, 'x', srcSize); + + sequences[0] = (ZSTD_Sequence) {1, 1, 3, 0}; + sequences[1] = (ZSTD_Sequence) {1, 0, 3, 0}; + sequences[2] = (ZSTD_Sequence) {1, 0, 3, 0}; + sequences[3] = (ZSTD_Sequence) {0, 1, 0, 0}; + + /* Test with sequence validation */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 1)); + + cSize = ZSTD_compressSequences(cctx, dst, dstSize, + sequences, kNbSequences, + src, srcSize); + + CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */ + CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */ + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + + /* Test without sequence validation */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 0)); + + cSize = ZSTD_compressSequences(cctx, dst, dstSize, + sequences, kNbSequences, + src, srcSize); + + CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */ + CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */ + + free(sequences); + } + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + + + /* Test with no block delim */ + { + size_t srcSize = 4; + void* const src = CNBuffer; + size_t dstSize = ZSTD_compressBound(srcSize); + void* const dst = compressedBuffer; + size_t const kNbSequences = 1; + ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences); + void* const checkBuf = malloc(srcSize); + + memset(src, 'x', srcSize); + + sequences[0] = (ZSTD_Sequence) {1, 1, 3, 0}; + + /* Test with sequence validation */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 3)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_noBlockDelimiters)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 1)); + + cSize = ZSTD_compressSequences(cctx, dst, dstSize, + sequences, kNbSequences, + src, srcSize); + + CHECK(ZSTD_isError(cSize), "Should not throw an error"); + CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst, cSize)); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + + free(sequences); + free(checkBuf); + } + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + + { /* Test case with two additional sequences */ + size_t srcSize = 19; + void* const src = CNBuffer; + size_t dstSize = ZSTD_compressBound(srcSize); + void* const dst = compressedBuffer; + size_t const kNbSequences = 7; + ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences); + + memset(src, 'x', srcSize); + + sequences[0] = (ZSTD_Sequence) {1, 1, 3, 0}; + sequences[1] = (ZSTD_Sequence) {1, 0, 3, 0}; + sequences[2] = (ZSTD_Sequence) {1, 0, 3, 0}; + sequences[3] = (ZSTD_Sequence) {1, 0, 3, 0}; + sequences[4] = (ZSTD_Sequence) {1, 0, 3, 0}; + sequences[5] = (ZSTD_Sequence) {1, 0, 3, 0}; + sequences[6] = (ZSTD_Sequence) {0, 0, 0, 0}; + + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 1)); + + cSize = ZSTD_compressSequences(cctx, dst, dstSize, + sequences, kNbSequences, + src, srcSize); + + CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */ + CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */ + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + + /* Test without sequence validation */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 0)); + + cSize = ZSTD_compressSequences(cctx, dst, dstSize, + sequences, kNbSequences, + src, srcSize); + + CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */ + CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */ + + free(sequences); + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + + DISPLAYLEVEL(3, "test%3i : Testing large offset with small window size: ", testNb++); + { + ZSTD_CCtx* cctx = ZSTD_createCCtx(); + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + + /* Test large offset, small window size*/ + { + size_t srcSize = 21; + void* const src = CNBuffer; + size_t dstSize = ZSTD_compressBound(srcSize); + void* const dst = compressedBuffer; + size_t const kNbSequences = 4; + ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences); + void* const checkBuf = malloc(srcSize); + const size_t largeDictSize = 1 << 25; + ZSTD_CDict* cdict = NULL; + ZSTD_DDict* ddict = NULL; + + /* Generate large dictionary */ + void* dictBuffer = calloc(largeDictSize, 1); + ZSTD_compressionParameters cParams = ZSTD_getCParams(1, srcSize, largeDictSize); + cParams.minMatch = ZSTD_MINMATCH_MIN; + cParams.hashLog = ZSTD_HASHLOG_MIN; + cParams.chainLog = ZSTD_CHAINLOG_MIN; + + cdict = ZSTD_createCDict_advanced(dictBuffer, largeDictSize, ZSTD_dlm_byRef, ZSTD_dct_rawContent, cParams, ZSTD_defaultCMem); + ddict = ZSTD_createDDict_advanced(dictBuffer, largeDictSize, ZSTD_dlm_byRef, ZSTD_dct_rawContent, ZSTD_defaultCMem); + + ZSTD_CCtx_refCDict(cctx, cdict); + ZSTD_DCtx_refDDict(dctx, ddict); + + sequences[0] = (ZSTD_Sequence) {3, 3, 3, 0}; + sequences[1] = (ZSTD_Sequence) {1 << 25, 0, 3, 0}; + sequences[2] = (ZSTD_Sequence) {1 << 25, 0, 9, 0}; + sequences[3] = (ZSTD_Sequence) {3, 0, 3, 0}; + + cSize = ZSTD_compressSequences(cctx, dst, dstSize, + sequences, kNbSequences, + src, srcSize); + + CHECK(ZSTD_isError(cSize), "Should not throw an error"); + + { + size_t dSize = ZSTD_decompressDCtx(dctx, checkBuf, srcSize, dst, cSize); + CHECK(ZSTD_isError(dSize), "Should not throw an error"); + CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!"); + } + + free(sequences); + free(checkBuf); + free(dictBuffer); + ZSTD_freeCDict(cdict); + ZSTD_freeDDict(ddict); + } + ZSTD_freeCCtx(cctx); + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + +_end: + FUZ_freeDictionary(dictionary); + ZSTD_freeCStream(zc); + ZSTD_freeDStream(zd); + ZSTD_freeCCtx(mtctx); + free(CNBuffer); + free(compressedBuffer); + free(decodedBuffer); + return testResult; + +_output_error: + testResult = 1; + DISPLAY("Error detected in Unit tests ! \n"); + goto _end; +} + + +/* ====== Fuzzer tests ====== */ + +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 No difference detected within %u bytes \n", (unsigned)max); + return u; + } + DISPLAY("Error at position %u / %u \n", (unsigned)u, (unsigned)max); + if (u>=3) + DISPLAY(" %02X %02X %02X ", + b1[u-3], b1[u-2], b1[u-1]); + DISPLAY(" :%02X: %02X %02X %02X %02X %02X \n", + b1[u], b1[u+1], b1[u+2], b1[u+3], b1[u+4], b1[u+5]); + if (u>=3) + DISPLAY(" %02X %02X %02X ", + b2[u-3], b2[u-2], b2[u-1]); + DISPLAY(" :%02X: %02X %02X %02X %02X %02X \n", + b2[u], b2[u+1], b2[u+2], b2[u+3], b2[u+4], b2[u+5]); + return u; +} + +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); +} + +/* Return value in range minVal <= v <= maxVal */ +static U32 FUZ_randomClampedLength(U32* seed, U32 minVal, U32 maxVal) +{ + U32 const mod = maxVal < minVal ? 1 : (maxVal + 1) - minVal; + return (U32)((FUZ_rand(seed) % mod) + minVal); +} + +static int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, double compressibility, int bigTests) +{ + U32 const maxSrcLog = bigTests ? 24 : 22; + static const U32 maxSampleLog = 19; + size_t const srcBufferSize = (size_t)1<= testNb) { + DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); + } else { + DISPLAYUPDATE(2, "\r%6u ", testNb); + } + + /* states full reset (deliberately not synchronized) */ + /* some issues can only happen when reusing states */ + if ((FUZ_rand(&lseed) & 0xFF) == 131) { + ZSTD_freeCStream(zc); + zc = ZSTD_createCStream(); + CHECK(zc==NULL, "ZSTD_createCStream : allocation error"); + resetAllowed=0; + } + if ((FUZ_rand(&lseed) & 0xFF) == 132) { + ZSTD_freeDStream(zd); + zd = ZSTD_createDStream(); + CHECK(zd==NULL, "ZSTD_createDStream : allocation error"); + CHECK_Z( ZSTD_initDStream_usingDict(zd, NULL, 0) ); /* ensure at least one init */ + } + + /* 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]; + } + + /* compression init */ + if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */ + && oldTestLog /* at least one test happened */ && resetAllowed) { + maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2); + maxTestSize = MIN(maxTestSize, srcBufferSize-16); + { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize; + CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) ); + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) ); + } + } else { + U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const cLevelCandidate = ( FUZ_rand(&lseed) % + (ZSTD_maxCLevel() - + (MAX(testLog, dictLog) / 3))) + + 1; + U32 const cLevel = MIN(cLevelCandidate, cLevelMax); + maxTestSize = FUZ_rLogLength(&lseed, testLog); + oldTestLog = testLog; + /* random dictionary selection */ + dictSize = ((FUZ_rand(&lseed)&7)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0; + { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize); + dict = srcBuffer + dictStart; + } + { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize; + CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, cLevel) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, FUZ_rand(&lseed) & 1) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_contentSizeFlag, FUZ_rand(&lseed) & 1) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_dictIDFlag, FUZ_rand(&lseed) & 1) ); + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) ); + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dict, dictSize) ); + } } + + /* multi-segments compression test */ + XXH64_reset(&xxhState, 0); + { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ; + cSize=0; + totalTestSize=0; + while(totalTestSize < maxTestSize) { + /* compress random chunks into randomly sized dst buffers */ + { size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const srcSize = MIN(maxTestSize-totalTestSize, randomSrcSize); + size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize); + ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 }; + outBuff.size = outBuff.pos + dstBuffSize; + + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + + XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos); + memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos); + totalTestSize += inBuff.pos; + } + + /* random flush operation, to mess around */ + if ((FUZ_rand(&lseed) & 15) == 0) { + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize); + outBuff.size = outBuff.pos + adjustedDstSize; + CHECK_Z( ZSTD_flushStream(zc, &outBuff) ); + } } + + /* final frame epilogue */ + { size_t remainingToFlush = (size_t)(-1); + while (remainingToFlush) { + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize); + outBuff.size = outBuff.pos + adjustedDstSize; + remainingToFlush = ZSTD_endStream(zc, &outBuff); + CHECK (ZSTD_isError(remainingToFlush), "end error : %s", ZSTD_getErrorName(remainingToFlush)); + } } + crcOrig = XXH64_digest(&xxhState); + cSize = outBuff.pos; + } + + /* multi - fragments decompression test */ + if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) { + CHECK_Z ( ZSTD_resetDStream(zd) ); + } else { + CHECK_Z ( ZSTD_initDStream_usingDict(zd, dict, dictSize) ); + } + { size_t decompressionResult = 1; + ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + for (totalGenSize = 0 ; decompressionResult ; ) { + size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize); + inBuff.size = inBuff.pos + readCSrcSize; + outBuff.size = outBuff.pos + dstBuffSize; + decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_getErrorCode(decompressionResult) == ZSTD_error_checksum_wrong) { + DISPLAY("checksum error : \n"); + findDiff(copyBuffer, dstBuffer, totalTestSize); + } + CHECK( ZSTD_isError(decompressionResult), "decompression error : %s", + ZSTD_getErrorName(decompressionResult) ); + } + CHECK (decompressionResult != 0, "frame not fully decoded"); + CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", + (unsigned)outBuff.pos, (unsigned)totalTestSize); + CHECK (inBuff.pos != cSize, "compressed data should be fully read") + { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0); + if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize); + CHECK (crcDest!=crcOrig, "decompressed data corrupted"); + } } + + /*===== noisy/erroneous src decompression test =====*/ + + /* add some noise */ + { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2; + U32 nn; for (nn=0; nn= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); } + else { DISPLAYUPDATE(2, "\r%6u ", testNb); } + FUZ_rand(&coreSeed); + lseed = coreSeed ^ prime32; + DISPLAYLEVEL(5, " *** Test %u *** \n", testNb); + opaqueAPI = FUZ_rand(&lseed) & 1; + + /* states full reset (deliberately not synchronized) */ + /* some issues can only happen when reusing states */ + if ((FUZ_rand(&lseed) & 0xFF) == 131) { + DISPLAYLEVEL(5, "Creating new context \n"); + ZSTD_freeCCtx(zc); + zc = ZSTD_createCCtx(); + CHECK(zc == NULL, "ZSTD_createCCtx allocation error"); + resetAllowed = 0; + } + if ((FUZ_rand(&lseed) & 0xFF) == 132) { + ZSTD_freeDStream(zd); + zd = ZSTD_createDStream(); + CHECK(zd == NULL, "ZSTD_createDStream allocation error"); + ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */ + } + + /* 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]; + } + + /* compression init */ + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, NULL, 0) ); /* cancel previous dict /*/ + if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */ + && oldTestLog /* at least one test happened */ + && resetAllowed) { + /* just set a compression level */ + maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2); + if (maxTestSize >= srcBufferSize) maxTestSize = srcBufferSize-1; + { int const compressionLevel = (FUZ_rand(&lseed) % 5) + 1; + DISPLAYLEVEL(5, "t%u : compression level : %i \n", testNb, compressionLevel); + CHECK_Z (setCCtxParameter(zc, cctxParams, ZSTD_c_compressionLevel, compressionLevel, opaqueAPI) ); + } + } else { + U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const cLevelCandidate = (FUZ_rand(&lseed) % + (ZSTD_maxCLevel() - + (MAX(testLog, dictLog) / 2))) + + 1; + int const cLevel = MIN(cLevelCandidate, cLevelMax); + DISPLAYLEVEL(5, "t%i: base cLevel : %u \n", testNb, cLevel); + maxTestSize = FUZ_rLogLength(&lseed, testLog); + DISPLAYLEVEL(5, "t%i: maxTestSize : %u \n", testNb, (unsigned)maxTestSize); + oldTestLog = testLog; + /* random dictionary selection */ + dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0; + { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize); + dict = srcBuffer + dictStart; + if (!dictSize) dict=NULL; + } + pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize; + { ZSTD_compressionParameters cParams = ZSTD_getCParams(cLevel, pledgedSrcSize, dictSize); + const U32 windowLogMax = bigTests ? 24 : 20; + const U32 searchLogMax = bigTests ? 15 : 13; + if (dictSize) + DISPLAYLEVEL(5, "t%u: with dictionary of size : %zu \n", testNb, dictSize); + + /* mess with compression parameters */ + cParams.windowLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.windowLog = MIN(windowLogMax, cParams.windowLog); + cParams.hashLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.chainLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.searchLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.searchLog = MIN(searchLogMax, cParams.searchLog); + cParams.minMatch += (FUZ_rand(&lseed) & 3) - 1; + cParams.targetLength = (U32)((cParams.targetLength + 1 ) * (0.5 + ((double)(FUZ_rand(&lseed) & 127) / 128))); + cParams = ZSTD_adjustCParams(cParams, pledgedSrcSize, dictSize); + + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: windowLog : %u \n", testNb, cParams.windowLog); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_windowLog, cParams.windowLog, opaqueAPI) ); + assert(cParams.windowLog >= ZSTD_WINDOWLOG_MIN); /* guaranteed by ZSTD_adjustCParams() */ + windowLogMalus = (cParams.windowLog - ZSTD_WINDOWLOG_MIN) / 5; + } + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: hashLog : %u \n", testNb, cParams.hashLog); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_hashLog, cParams.hashLog, opaqueAPI) ); + } + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: chainLog : %u \n", testNb, cParams.chainLog); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_chainLog, cParams.chainLog, opaqueAPI) ); + } + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_searchLog, cParams.searchLog, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_minMatch, cParams.minMatch, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_targetLength, cParams.targetLength, opaqueAPI) ); + + /* mess with long distance matching parameters */ + if (bigTests) { + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_enableLongDistanceMatching, FUZ_randomClampedLength(&lseed, ZSTD_ps_auto, ZSTD_ps_disable), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmHashLog, FUZ_randomClampedLength(&lseed, ZSTD_HASHLOG_MIN, 23), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmMinMatch, FUZ_randomClampedLength(&lseed, ZSTD_LDM_MINMATCH_MIN, ZSTD_LDM_MINMATCH_MAX), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmBucketSizeLog, FUZ_randomClampedLength(&lseed, ZSTD_LDM_BUCKETSIZELOG_MIN, ZSTD_LDM_BUCKETSIZELOG_MAX), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmHashRateLog, FUZ_randomClampedLength(&lseed, ZSTD_LDM_HASHRATELOG_MIN, ZSTD_LDM_HASHRATELOG_MAX), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_srcSizeHint, FUZ_randomClampedLength(&lseed, ZSTD_SRCSIZEHINT_MIN, ZSTD_SRCSIZEHINT_MAX), opaqueAPI) ); + } + + /* mess with frame parameters */ + if (FUZ_rand(&lseed) & 1) { + int const checksumFlag = FUZ_rand(&lseed) & 1; + DISPLAYLEVEL(5, "t%u: frame checksum : %u \n", testNb, checksumFlag); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_checksumFlag, checksumFlag, opaqueAPI) ); + } + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_dictIDFlag, FUZ_rand(&lseed) & 1, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_contentSizeFlag, FUZ_rand(&lseed) & 1, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: pledgedSrcSize : %u \n", testNb, (unsigned)pledgedSrcSize); + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) ); + } else { + pledgedSrcSize = ZSTD_CONTENTSIZE_UNKNOWN; + } + + /* multi-threading parameters. Only adjust occasionally for small tests. */ + if (bigTests || (FUZ_rand(&lseed) & 0xF) == 0xF) { + U32 const nbThreadsCandidate = (FUZ_rand(&lseed) & 4) + 1; + U32 const nbThreadsAdjusted = (windowLogMalus < nbThreadsCandidate) ? nbThreadsCandidate - windowLogMalus : 1; + int const nbThreads = MIN(nbThreadsAdjusted, nbThreadsMax); + DISPLAYLEVEL(5, "t%i: nbThreads : %u \n", testNb, nbThreads); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_nbWorkers, nbThreads, opaqueAPI) ); + if (nbThreads > 1) { + U32 const jobLog = FUZ_rand(&lseed) % (testLog+1); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_overlapLog, FUZ_rand(&lseed) % 10, opaqueAPI) ); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_jobSize, (U32)FUZ_rLogLength(&lseed, jobLog), opaqueAPI) ); + } + } + /* Enable rsyncable mode 1 in 4 times. */ + { + int const rsyncable = (FUZ_rand(&lseed) % 4 == 0); + DISPLAYLEVEL(5, "t%u: rsyncable : %d \n", testNb, rsyncable); + setCCtxParameter(zc, cctxParams, ZSTD_c_rsyncable, rsyncable, opaqueAPI); + } + + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_forceMaxWindow, FUZ_rand(&lseed) & 1, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_deterministicRefPrefix, FUZ_rand(&lseed) & 1, opaqueAPI) ); + + /* Apply parameters */ + if (opaqueAPI) { + DISPLAYLEVEL(5, "t%u: applying CCtxParams \n", testNb); + CHECK_Z (ZSTD_CCtx_setParametersUsingCCtxParams(zc, cctxParams) ); + } + + if (FUZ_rand(&lseed) & 1) { + if (FUZ_rand(&lseed) & 1) { + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dict, dictSize) ); + } else { + CHECK_Z( ZSTD_CCtx_loadDictionary_byReference(zc, dict, dictSize) ); + } + } else { + isRefPrefix = 1; + CHECK_Z( ZSTD_CCtx_refPrefix(zc, dict, dictSize) ); + } + } } + + CHECK_Z(getCCtxParams(zc, &savedParams)); + + /* multi-segments compression test */ + { int iter; + int const startSeed = lseed; + XXH64_hash_t compressedCrcs[2]; + for (iter = 0; iter < 2; ++iter, lseed = startSeed) { + ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ; + int const singlePass = (FUZ_rand(&lseed) & 3) == 0; + int nbWorkers; + + XXH64_reset(&xxhState, 0); + + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) ); + if (isRefPrefix) { + DISPLAYLEVEL(6, "t%u: Reloading prefix\n", testNb); + /* Need to reload the prefix because it gets dropped after one compression */ + CHECK_Z( ZSTD_CCtx_refPrefix(zc, dict, dictSize) ); + } + + /* Adjust number of workers occasionally - result must be deterministic independent of nbWorkers */ + CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_nbWorkers, &nbWorkers)); + if (nbWorkers > 0 && (FUZ_rand(&lseed) & 7) == 0) { + DISPLAYLEVEL(6, "t%u: Modify nbWorkers: %d -> %d \n", testNb, nbWorkers, nbWorkers + iter); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_nbWorkers, nbWorkers + iter)); + } + + if (singlePass) { + ZSTD_inBuffer inBuff = { srcBuffer, maxTestSize, 0 }; + CHECK_Z(ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end)); + DISPLAYLEVEL(6, "t%u: Single pass compression: consumed %u bytes ; produced %u bytes \n", + testNb, (unsigned)inBuff.pos, (unsigned)outBuff.pos); + CHECK(inBuff.pos != inBuff.size, "Input not consumed!"); + crcOrig = XXH64(srcBuffer, maxTestSize, 0); + totalTestSize = maxTestSize; + } else { + outBuff.size = 0; + for (totalTestSize=0 ; (totalTestSize < maxTestSize) ; ) { + /* compress random chunks into randomly sized dst buffers */ + size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const srcSize = MIN(maxTestSize-totalTestSize, randomSrcSize); + size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize); + ZSTD_EndDirective const flush = (FUZ_rand(&lseed) & 15) ? ZSTD_e_continue : ZSTD_e_flush; + ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 }; + int forwardProgress; + do { + size_t const ipos = inBuff.pos; + size_t const opos = outBuff.pos; + size_t ret; + if (outBuff.pos == outBuff.size) { + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog+1); + size_t const dstBuffSize = MIN(cBufferSize - outBuff.pos, randomDstSize); + outBuff.size = outBuff.pos + dstBuffSize; + } + CHECK_Z( ret = ZSTD_compressStream2(zc, &outBuff, &inBuff, flush) ); + DISPLAYLEVEL(6, "t%u: compress consumed %u bytes (total : %u) ; flush: %u (total : %u) \n", + testNb, (unsigned)inBuff.pos, (unsigned)(totalTestSize + inBuff.pos), (unsigned)flush, (unsigned)outBuff.pos); + + /* We've completed the flush */ + if (flush == ZSTD_e_flush && ret == 0) + break; + + /* Ensure maximal forward progress for determinism */ + forwardProgress = (inBuff.pos != ipos) || (outBuff.pos != opos); + } while (forwardProgress); + assert(inBuff.pos == inBuff.size); + + XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos); + memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos); + totalTestSize += inBuff.pos; + } + + /* final frame epilogue */ + { size_t remainingToFlush = 1; + while (remainingToFlush) { + ZSTD_inBuffer inBuff = { NULL, 0, 0 }; + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog+1); + size_t const adjustedDstSize = MIN(cBufferSize - outBuff.pos, randomDstSize); + outBuff.size = outBuff.pos + adjustedDstSize; + DISPLAYLEVEL(6, "t%u: End-flush into dst buffer of size %u \n", testNb, (unsigned)adjustedDstSize); + /* ZSTD_e_end guarantees maximal forward progress */ + remainingToFlush = ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end); + DISPLAYLEVEL(6, "t%u: Total flushed so far : %u bytes \n", testNb, (unsigned)outBuff.pos); + CHECK( ZSTD_isError(remainingToFlush), + "ZSTD_compressStream2 w/ ZSTD_e_end error : %s", + ZSTD_getErrorName(remainingToFlush) ); + } } + crcOrig = XXH64_digest(&xxhState); + } + cSize = outBuff.pos; + compressedCrcs[iter] = XXH64(cBuffer, cSize, 0); + DISPLAYLEVEL(5, "Frame completed : %zu bytes \n", cSize); + } + CHECK(!(compressedCrcs[0] == compressedCrcs[1]), "Compression is not deterministic!"); + } + + CHECK(badParameters(zc, savedParams), "CCtx params are wrong"); + + /* multi - fragments decompression test */ + if (FUZ_rand(&lseed) & 1) { + CHECK_Z(ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters)); + } + if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) { + DISPLAYLEVEL(5, "resetting DCtx (dict:%p) \n", (void const*)dict); + CHECK_Z( ZSTD_resetDStream(zd) ); + } else { + if (dictSize) + DISPLAYLEVEL(5, "using dictionary of size %zu \n", dictSize); + CHECK_Z( ZSTD_initDStream_usingDict(zd, dict, dictSize) ); + } + if (FUZ_rand(&lseed) & 1) { + CHECK_Z(ZSTD_DCtx_setParameter(zd, ZSTD_d_disableHuffmanAssembly, FUZ_rand(&lseed) & 1)); + } + { size_t decompressionResult = 1; + ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + for (totalGenSize = 0 ; decompressionResult ; ) { + size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize); + inBuff.size = inBuff.pos + readCSrcSize; + outBuff.size = outBuff.pos + dstBuffSize; + DISPLAYLEVEL(6, "decompression presented %u new bytes (pos:%u/%u)\n", + (unsigned)readCSrcSize, (unsigned)inBuff.pos, (unsigned)cSize); + decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff); + DISPLAYLEVEL(6, "so far: consumed = %u, produced = %u \n", + (unsigned)inBuff.pos, (unsigned)outBuff.pos); + if (ZSTD_isError(decompressionResult)) { + DISPLAY("ZSTD_decompressStream error : %s \n", ZSTD_getErrorName(decompressionResult)); + findDiff(copyBuffer, dstBuffer, totalTestSize); + } + CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult)); + CHECK (inBuff.pos > cSize, "ZSTD_decompressStream consumes too much input : %u > %u ", (unsigned)inBuff.pos, (unsigned)cSize); + } + CHECK (inBuff.pos != cSize, "compressed data should be fully read (%u != %u)", (unsigned)inBuff.pos, (unsigned)cSize); + CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", (unsigned)outBuff.pos, (unsigned)totalTestSize); + { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0); + if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize); + CHECK (crcDest!=crcOrig, "decompressed data corrupted"); + } } + + /*===== noisy/erroneous src decompression test =====*/ + + /* add some noise */ + { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2; + U32 nn; for (nn=0; nn='0') && (*argument<='9')) { + nbTests *= 10; + nbTests += *argument - '0'; + argument++; + } + break; + + case 'T': /* limit tests by time */ + argument++; + nbTests=0; g_clockTime=0; + while ((*argument>='0') && (*argument<='9')) { + g_clockTime *= 10; + g_clockTime += *argument - '0'; + argument++; + } + if (*argument=='m') { /* -T1m == -T60 */ + g_clockTime *=60, argument++; + if (*argument=='n') argument++; /* -T1mn == -T60 */ + } else if (*argument=='s') argument++; /* -T10s == -T10 */ + g_clockTime *= SEC_TO_MICRO; + break; + + case 's': /* manually select seed */ + argument++; + seedset=1; + seed=0; + while ((*argument>='0') && (*argument<='9')) { + seed *= 10; + seed += *argument - '0'; + argument++; + } + break; + + case 't': /* select starting test number */ + argument++; + testNb=0; + while ((*argument>='0') && (*argument<='9')) { + testNb *= 10; + testNb += *argument - '0'; + argument++; + } + break; + + case 'P': /* compressibility % */ + argument++; + proba=0; + while ((*argument>='0') && (*argument<='9')) { + proba *= 10; + proba += *argument - '0'; + argument++; + } + if (proba<0) proba=0; + if (proba>100) proba=100; + break; + + default: + return FUZ_usage(programName); + } + } } } /* for(argNb=1; argNb