deps/libchdr/deps/zstd-1.5.5/zlibWrapper/examples/zwrapbench.c

   1 /*
   2  * Copyright (c) Meta Platforms, Inc. and affiliates.
   3  * All rights reserved.
   4  *
   5  * This source code is licensed under both the BSD-style license (found in the
   6  * LICENSE file in the root directory of this source tree) and the GPLv2 (found
   7  * in the COPYING file in the root directory of this source tree).
   8  */
   9
  10
  11 /* *************************************
  12 *  Includes
  13 ***************************************/
  14 #include "util.h"        /* Compiler options, UTIL_GetFileSize, UTIL_sleep */
  15 #include <stdlib.h>      /* malloc, free */
  16 #include <string.h>      /* memset */
  17 #include <stdio.h>       /* fprintf, fopen, ftello64 */
  18 #include <time.h>        /* clock_t, clock, CLOCKS_PER_SEC */
  19 #include <ctype.h>       /* toupper */
  20 #include <errno.h>       /* errno */
  21
  22 #include "timefn.h"      /* UTIL_time_t, UTIL_getTime, UTIL_clockSpanMicro, UTIL_waitForNextTick */
  23 #include "mem.h"
  24 #define ZSTD_STATIC_LINKING_ONLY
  25 #include "zstd.h"
  26 #include "datagen.h"     /* RDG_genBuffer */
  27 #include "xxhash.h"
  28
  29 #include "../zstd_zlibwrapper.h"
  30
  31
  32
  33 /*-************************************
  34 *  Tuning parameters
  35 **************************************/
  36 #ifndef ZSTDCLI_CLEVEL_DEFAULT
  37 #  define ZSTDCLI_CLEVEL_DEFAULT 3
  38 #endif
  39
  40
  41 /*-************************************
  42 *  Constants
  43 **************************************/
  44 #define COMPRESSOR_NAME "Zstandard wrapper for zlib command line interface"
  45 #ifndef ZSTD_VERSION
  46 #  define ZSTD_VERSION "v" ZSTD_VERSION_STRING
  47 #endif
  48 #define AUTHOR "Yann Collet"
  49 #define WELCOME_MESSAGE "*** %s %i-bits %s, by %s ***\n", COMPRESSOR_NAME, (int)(sizeof(size_t)*8), ZSTD_VERSION, AUTHOR
  50
  51 #ifndef ZSTD_GIT_COMMIT
  52 #  define ZSTD_GIT_COMMIT_STRING ""
  53 #else
  54 #  define ZSTD_GIT_COMMIT_STRING ZSTD_EXPAND_AND_QUOTE(ZSTD_GIT_COMMIT)
  55 #endif
  56
  57 #define NBLOOPS               3
  58 #define TIMELOOP_MICROSEC     1*1000000ULL /* 1 second */
  59 #define ACTIVEPERIOD_MICROSEC 70*1000000ULL /* 70 seconds */
  60 #define COOLPERIOD_SEC        10
  61
  62 #define KB *(1 <<10)
  63 #define MB *(1 <<20)
  64 #define GB *(1U<<30)
  65
  66 static const size_t maxMemory = (sizeof(size_t)==4)  ?  (2 GB - 64 MB) : (size_t)(1ULL << ((sizeof(size_t)*8)-31));
  67
  68 static U32 g_compressibilityDefault = 50;
  69
  70
  71 /* *************************************
  72 *  console display
  73 ***************************************/
  74 #define DEFAULT_DISPLAY_LEVEL 2
  75 #define DISPLAY(...)         fprintf(displayOut, __VA_ARGS__)
  76 #define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
  77 static unsigned g_displayLevel = DEFAULT_DISPLAY_LEVEL;   /* 0 : no display;   1: errors;   2 : + result + interaction + warnings;   3 : + progression;   4 : + information */
  78 static FILE* displayOut;
  79
  80 #define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
  81             if ((clock() - g_time > refreshRate) || (g_displayLevel>=4)) \
  82             { g_time = clock(); DISPLAY(__VA_ARGS__); \
  83             if (g_displayLevel>=4) fflush(displayOut); } }
  84 static const clock_t refreshRate = CLOCKS_PER_SEC * 15 / 100;
  85 static clock_t g_time = 0;
  86
  87
  88 /* *************************************
  89 *  Exceptions
  90 ***************************************/
  91 #ifndef DEBUG
  92 #  define DEBUG 0
  93 #endif
  94 #define DEBUGOUTPUT(...) { if (DEBUG) DISPLAY(__VA_ARGS__); }
  95 #define EXM_THROW(error, ...)                                             \
  96 {                                                                         \
  97     DEBUGOUTPUT("Error defined at %s, line %i : \n", __FILE__, __LINE__); \
  98     DISPLAYLEVEL(1, "Error %i : ", error);                                \
  99     DISPLAYLEVEL(1, __VA_ARGS__);                                         \
 100     DISPLAYLEVEL(1, "\n");                                                \
 101     exit(error);                                                          \
 102 }
 103
 104
 105 /* *************************************
 106 *  Benchmark Parameters
 107 ***************************************/
 108 static unsigned g_nbIterations = NBLOOPS;
 109 static size_t g_blockSize = 0;
 110 int g_additionalParam = 0;
 111
 112 static void BMK_setNotificationLevel(unsigned level) { g_displayLevel=level; }
 113
 114 static void BMK_setAdditionalParam(int additionalParam) { g_additionalParam=additionalParam; }
 115
 116 static void BMK_SetNbIterations(unsigned nbLoops)
 117 {
 118     g_nbIterations = nbLoops;
 119     DISPLAYLEVEL(3, "- test >= %u seconds per compression / decompression -\n", g_nbIterations);
 120 }
 121
 122 static void BMK_SetBlockSize(size_t blockSize)
 123 {
 124     g_blockSize = blockSize;
 125     DISPLAYLEVEL(2, "using blocks of size %u KB \n", (unsigned)(blockSize>>10));
 126 }
 127
 128
 129 /* ********************************************************
 130 *  Bench functions
 131 **********************************************************/
 132 #undef MIN
 133 #undef MAX
 134 #define MIN(a,b) ((a)<(b) ? (a) : (b))
 135 #define MAX(a,b) ((a)>(b) ? (a) : (b))
 136
 137 typedef struct
 138 {
 139     z_const char* srcPtr;
 140     size_t srcSize;
 141     char*  cPtr;
 142     size_t cRoom;
 143     size_t cSize;
 144     char*  resPtr;
 145     size_t resSize;
 146 } blockParam_t;
 147
 148 typedef enum { BMK_ZSTD, BMK_ZSTD_STREAM, BMK_ZLIB, BMK_ZWRAP_ZLIB, BMK_ZWRAP_ZSTD, BMK_ZLIB_REUSE, BMK_ZWRAP_ZLIB_REUSE, BMK_ZWRAP_ZSTD_REUSE } BMK_compressor;
 149
 150
 151 static int BMK_benchMem(z_const void* srcBuffer, size_t srcSize,
 152                         const char* displayName, int cLevel,
 153                         const size_t* fileSizes, U32 nbFiles,
 154                         const void* dictBuffer, size_t dictBufferSize, BMK_compressor compressor)
 155 {
 156     size_t const blockSize = (g_blockSize>=32 ? g_blockSize : srcSize) + (!srcSize) /* avoid div by 0 */ ;
 157     size_t const avgSize = MIN(g_blockSize, (srcSize / nbFiles));
 158     U32 const maxNbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize) + nbFiles;
 159     blockParam_t* const blockTable = (blockParam_t*) malloc(maxNbBlocks * sizeof(blockParam_t));
 160     size_t const maxCompressedSize = ZSTD_compressBound(srcSize) + (maxNbBlocks * 1024);   /* add some room for safety */
 161     void* const compressedBuffer = malloc(maxCompressedSize);
 162     void* const resultBuffer = malloc(srcSize);
 163     ZSTD_CCtx* const ctx = ZSTD_createCCtx();
 164     ZSTD_DCtx* const dctx = ZSTD_createDCtx();
 165     U32 nbBlocks;
 166
 167     /* checks */
 168     if (!compressedBuffer || !resultBuffer || !blockTable || !ctx || !dctx)
 169         EXM_THROW(31, "allocation error : not enough memory");
 170
 171     /* init */
 172     if (strlen(displayName)>17) displayName += strlen(displayName)-17;   /* can only display 17 characters */
 173
 174     /* Init blockTable data */
 175     {   z_const char* srcPtr = (z_const char*)srcBuffer;
 176         char* cPtr = (char*)compressedBuffer;
 177         char* resPtr = (char*)resultBuffer;
 178         U32 fileNb;
 179         for (nbBlocks=0, fileNb=0; fileNb<nbFiles; fileNb++) {
 180             size_t remaining = fileSizes[fileNb];
 181             U32 const nbBlocksforThisFile = (U32)((remaining + (blockSize-1)) / blockSize);
 182             U32 const blockEnd = nbBlocks + nbBlocksforThisFile;
 183             for ( ; nbBlocks<blockEnd; nbBlocks++) {
 184                 size_t const thisBlockSize = MIN(remaining, blockSize);
 185                 blockTable[nbBlocks].srcPtr = srcPtr;
 186                 blockTable[nbBlocks].cPtr = cPtr;
 187                 blockTable[nbBlocks].resPtr = resPtr;
 188                 blockTable[nbBlocks].srcSize = thisBlockSize;
 189                 blockTable[nbBlocks].cRoom = ZSTD_compressBound(thisBlockSize);
 190                 srcPtr += thisBlockSize;
 191                 cPtr += blockTable[nbBlocks].cRoom;
 192                 resPtr += thisBlockSize;
 193                 remaining -= thisBlockSize;
 194     }   }   }
 195
 196     /* warming up memory */
 197     RDG_genBuffer(compressedBuffer, maxCompressedSize, 0.10, 0.50, 1);
 198
 199     /* Bench */
 200     {   U64 fastestC = (U64)(-1LL), fastestD = (U64)(-1LL);
 201         U64 const crcOrig = XXH64(srcBuffer, srcSize, 0);
 202         UTIL_time_t coolTime;
 203         U64 const maxTime = (g_nbIterations * TIMELOOP_MICROSEC) + 100;
 204         U64 totalCTime=0, totalDTime=0;
 205         U32 cCompleted=0, dCompleted=0;
 206 #       define NB_MARKS 4
 207         const char* const marks[NB_MARKS] = { " |", " /", " =",  "\\" };
 208         U32 markNb = 0;
 209         size_t cSize = 0;
 210         double ratio = 0.;
 211
 212         coolTime = UTIL_getTime();
 213         DISPLAYLEVEL(2, "\r%79s\r", "");
 214         while (!cCompleted | !dCompleted) {
 215             UTIL_time_t clockStart;
 216             U64 clockLoop = g_nbIterations ? TIMELOOP_MICROSEC : 1;
 217
 218             /* overheat protection */
 219             if (UTIL_clockSpanMicro(coolTime) > ACTIVEPERIOD_MICROSEC) {
 220                 DISPLAYLEVEL(2, "\rcooling down ...    \r");
 221                 UTIL_sleep(COOLPERIOD_SEC);
 222                 coolTime = UTIL_getTime();
 223             }
 224
 225             /* Compression */
 226             DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->\r", marks[markNb], displayName, (unsigned)srcSize);
 227             if (!cCompleted) memset(compressedBuffer, 0xE5, maxCompressedSize);  /* warm up and erase result buffer */
 228
 229             UTIL_sleepMilli(1);  /* give processor time to other processes */
 230             UTIL_waitForNextTick();
 231             clockStart = UTIL_getTime();
 232
 233             if (!cCompleted) {   /* still some time to do compression tests */
 234                 U32 nbLoops = 0;
 235                 if (compressor == BMK_ZSTD) {
 236                     ZSTD_parameters const zparams = ZSTD_getParams(cLevel, avgSize, dictBufferSize);
 237                     ZSTD_customMem const cmem = { NULL, NULL, NULL };
 238                     ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictBufferSize, ZSTD_dlm_byRef, ZSTD_dct_auto, zparams.cParams, cmem);
 239                     if (cdict==NULL) EXM_THROW(1, "ZSTD_createCDict_advanced() allocation failure");
 240
 241                     do {
 242                         U32 blockNb;
 243                         size_t rSize;
 244                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 245                             if (dictBufferSize) {
 246                                 rSize = ZSTD_compress_usingCDict(ctx,
 247                                                 blockTable[blockNb].cPtr,  blockTable[blockNb].cRoom,
 248                                                 blockTable[blockNb].srcPtr,blockTable[blockNb].srcSize,
 249                                                 cdict);
 250                             } else {
 251                                 rSize = ZSTD_compressCCtx (ctx,
 252                                                 blockTable[blockNb].cPtr,  blockTable[blockNb].cRoom,
 253                                                 blockTable[blockNb].srcPtr,blockTable[blockNb].srcSize, cLevel);
 254                             }
 255                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_compress_usingCDict() failed : %s", ZSTD_getErrorName(rSize));
 256                             blockTable[blockNb].cSize = rSize;
 257                         }
 258                         nbLoops++;
 259                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 260                     ZSTD_freeCDict(cdict);
 261                 } else if (compressor == BMK_ZSTD_STREAM) {
 262                     ZSTD_parameters const zparams = ZSTD_getParams(cLevel, avgSize, dictBufferSize);
 263                     ZSTD_inBuffer inBuffer;
 264                     ZSTD_outBuffer outBuffer;
 265                     ZSTD_CStream* zbc = ZSTD_createCStream();
 266                     size_t rSize;
 267                     ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams();
 268
 269                     if (!cctxParams) EXM_THROW(1, "ZSTD_createCCtxParams() allocation failure");
 270                     if (zbc == NULL) EXM_THROW(1, "ZSTD_createCStream() allocation failure");
 271
 272                     {   int initErr = 0;
 273                         initErr |= ZSTD_isError(ZSTD_CCtx_reset(zbc, ZSTD_reset_session_only));
 274                         initErr |= ZSTD_isError(ZSTD_CCtxParams_init_advanced(cctxParams, zparams));
 275                         initErr |= ZSTD_isError(ZSTD_CCtx_setParametersUsingCCtxParams(zbc, cctxParams));
 276                         initErr |= ZSTD_isError(ZSTD_CCtx_setPledgedSrcSize(zbc, avgSize));
 277                         initErr |= ZSTD_isError(ZSTD_CCtx_loadDictionary(zbc, dictBuffer, dictBufferSize));
 278
 279                         ZSTD_freeCCtxParams(cctxParams);
 280                         if (initErr) EXM_THROW(1, "CCtx init failed!");
 281                     }
 282
 283                     do {
 284                         U32 blockNb;
 285                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 286                             rSize = ZSTD_CCtx_reset(zbc, ZSTD_reset_session_only);
 287                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_CCtx_reset() failed : %s", ZSTD_getErrorName(rSize));
 288                             rSize = ZSTD_CCtx_setPledgedSrcSize(zbc, blockTable[blockNb].srcSize);
 289                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_CCtx_setPledgedSrcSize() failed : %s", ZSTD_getErrorName(rSize));
 290                             inBuffer.src = blockTable[blockNb].srcPtr;
 291                             inBuffer.size = blockTable[blockNb].srcSize;
 292                             inBuffer.pos = 0;
 293                             outBuffer.dst = blockTable[blockNb].cPtr;
 294                             outBuffer.size = blockTable[blockNb].cRoom;
 295                             outBuffer.pos = 0;
 296                             rSize = ZSTD_compressStream(zbc, &outBuffer, &inBuffer);
 297                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_compressStream() failed : %s", ZSTD_getErrorName(rSize));
 298                             rSize = ZSTD_endStream(zbc, &outBuffer);
 299                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_endStream() failed : %s", ZSTD_getErrorName(rSize));
 300                             blockTable[blockNb].cSize = outBuffer.pos;
 301                         }
 302                         nbLoops++;
 303                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 304                     ZSTD_freeCStream(zbc);
 305                 } else if (compressor == BMK_ZWRAP_ZLIB_REUSE || compressor == BMK_ZWRAP_ZSTD_REUSE || compressor == BMK_ZLIB_REUSE) {
 306                     z_stream def;
 307                     int ret;
 308                     int useSetDict = (dictBuffer != NULL);
 309                     if (compressor == BMK_ZLIB_REUSE || compressor == BMK_ZWRAP_ZLIB_REUSE) ZWRAP_useZSTDcompression(0);
 310                     else ZWRAP_useZSTDcompression(1);
 311                     def.zalloc = Z_NULL;
 312                     def.zfree = Z_NULL;
 313                     def.opaque = Z_NULL;
 314                     ret = deflateInit(&def, cLevel);
 315                     if (ret != Z_OK) EXM_THROW(1, "deflateInit failure");
 316                  /*   if (ZWRAP_isUsingZSTDcompression()) {
 317                         ret = ZWRAP_setPledgedSrcSize(&def, avgSize);
 318                         if (ret != Z_OK) EXM_THROW(1, "ZWRAP_setPledgedSrcSize failure");
 319                     } */
 320                     do {
 321                         U32 blockNb;
 322                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 323                             if (ZWRAP_isUsingZSTDcompression())
 324                                 ret = ZWRAP_deflateReset_keepDict(&def); /* reuse dictionary to make compression faster */
 325                             else
 326                                 ret = deflateReset(&def);
 327                             if (ret != Z_OK) EXM_THROW(1, "deflateReset failure");
 328                             if (useSetDict) {
 329                                 ret = deflateSetDictionary(&def, (const z_Bytef*)dictBuffer, dictBufferSize);
 330                                 if (ret != Z_OK) EXM_THROW(1, "deflateSetDictionary failure");
 331                                 if (ZWRAP_isUsingZSTDcompression()) useSetDict = 0; /* zstd doesn't require deflateSetDictionary after ZWRAP_deflateReset_keepDict */
 332                             }
 333                             def.next_in = (z_const z_Bytef*) blockTable[blockNb].srcPtr;
 334                             def.avail_in = (uInt)blockTable[blockNb].srcSize;
 335                             def.total_in = 0;
 336                             def.next_out = (z_Bytef*) blockTable[blockNb].cPtr;
 337                             def.avail_out = (uInt)blockTable[blockNb].cRoom;
 338                             def.total_out = 0;
 339                             ret = deflate(&def, Z_FINISH);
 340                             if (ret != Z_STREAM_END) EXM_THROW(1, "deflate failure ret=%d srcSize=%d" , ret, (int)blockTable[blockNb].srcSize);
 341                             blockTable[blockNb].cSize = def.total_out;
 342                         }
 343                         nbLoops++;
 344                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 345                     ret = deflateEnd(&def);
 346                     if (ret != Z_OK) EXM_THROW(1, "deflateEnd failure");
 347                 } else {
 348                     z_stream def;
 349                     if (compressor == BMK_ZLIB || compressor == BMK_ZWRAP_ZLIB) ZWRAP_useZSTDcompression(0);
 350                     else ZWRAP_useZSTDcompression(1);
 351                     do {
 352                         U32 blockNb;
 353                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 354                             int ret;
 355                             def.zalloc = Z_NULL;
 356                             def.zfree = Z_NULL;
 357                             def.opaque = Z_NULL;
 358                             ret = deflateInit(&def, cLevel);
 359                             if (ret != Z_OK) EXM_THROW(1, "deflateInit failure");
 360                             if (dictBuffer) {
 361                                 ret = deflateSetDictionary(&def, (const z_Bytef*)dictBuffer, dictBufferSize);
 362                                 if (ret != Z_OK) EXM_THROW(1, "deflateSetDictionary failure");
 363                             }
 364                             def.next_in = (z_const z_Bytef*) blockTable[blockNb].srcPtr;
 365                             def.avail_in = (uInt)blockTable[blockNb].srcSize;
 366                             def.total_in = 0;
 367                             def.next_out = (z_Bytef*) blockTable[blockNb].cPtr;
 368                             def.avail_out = (uInt)blockTable[blockNb].cRoom;
 369                             def.total_out = 0;
 370                             ret = deflate(&def, Z_FINISH);
 371                             if (ret != Z_STREAM_END) EXM_THROW(1, "deflate failure");
 372                             ret = deflateEnd(&def);
 373                             if (ret != Z_OK) EXM_THROW(1, "deflateEnd failure");
 374                             blockTable[blockNb].cSize = def.total_out;
 375                         }
 376                         nbLoops++;
 377                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 378                 }
 379                 {   U64 const clockSpan = UTIL_clockSpanMicro(clockStart);
 380                     if (clockSpan < fastestC*nbLoops) fastestC = clockSpan / nbLoops;
 381                     totalCTime += clockSpan;
 382                     cCompleted = totalCTime>maxTime;
 383             }   }
 384
 385             cSize = 0;
 386             { U32 blockNb; for (blockNb=0; blockNb<nbBlocks; blockNb++) cSize += blockTable[blockNb].cSize; }
 387             ratio = (double)srcSize / (double)cSize;
 388             markNb = (markNb+1) % NB_MARKS;
 389             DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.3f),%6.1f MB/s\r",
 390                     marks[markNb], displayName, (unsigned)srcSize, (unsigned)cSize, ratio,
 391                     (double)srcSize / (double)fastestC );
 392
 393             (void)fastestD; (void)crcOrig;   /*  unused when decompression disabled */
 394 #if 1
 395             /* Decompression */
 396             if (!dCompleted) memset(resultBuffer, 0xD6, srcSize);  /* warm result buffer */
 397
 398             UTIL_sleepMilli(1); /* give processor time to other processes */
 399             UTIL_waitForNextTick();
 400             clockStart = UTIL_getTime();
 401
 402             if (!dCompleted) {
 403                 U32 nbLoops = 0;
 404                 if (compressor == BMK_ZSTD) {
 405                     ZSTD_DDict* ddict = ZSTD_createDDict(dictBuffer, dictBufferSize);
 406                     if (!ddict) EXM_THROW(2, "ZSTD_createDDict() allocation failure");
 407                     do {
 408                         unsigned blockNb;
 409                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 410                             size_t const regenSize = ZSTD_decompress_usingDDict(dctx,
 411                                 blockTable[blockNb].resPtr, blockTable[blockNb].srcSize,
 412                                 blockTable[blockNb].cPtr, blockTable[blockNb].cSize,
 413                                 ddict);
 414                             if (ZSTD_isError(regenSize)) {
 415                                 DISPLAY("ZSTD_decompress_usingDDict() failed on block %u : %s  \n",
 416                                           blockNb, ZSTD_getErrorName(regenSize));
 417                                 clockLoop = 0;   /* force immediate test end */
 418                                 break;
 419                             }
 420                             blockTable[blockNb].resSize = regenSize;
 421                         }
 422                         nbLoops++;
 423                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 424                     ZSTD_freeDDict(ddict);
 425                 } else if (compressor == BMK_ZSTD_STREAM) {
 426                     ZSTD_inBuffer inBuffer;
 427                     ZSTD_outBuffer outBuffer;
 428                     ZSTD_DStream* zbd = ZSTD_createDStream();
 429                     size_t rSize;
 430                     if (zbd == NULL) EXM_THROW(1, "ZSTD_createDStream() allocation failure");
 431                     rSize = ZSTD_DCtx_reset(zbd, ZSTD_reset_session_only);
 432                     if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_DCtx_reset() failed : %s", ZSTD_getErrorName(rSize));
 433                     rSize = ZSTD_DCtx_loadDictionary(zbd, dictBuffer, dictBufferSize);
 434                     if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_DCtx_loadDictionary() failed : %s", ZSTD_getErrorName(rSize));
 435                     do {
 436                         U32 blockNb;
 437                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 438                             rSize = ZSTD_DCtx_reset(zbd, ZSTD_reset_session_only);
 439                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_DCtx_reset() failed : %s", ZSTD_getErrorName(rSize));
 440                             inBuffer.src = blockTable[blockNb].cPtr;
 441                             inBuffer.size = blockTable[blockNb].cSize;
 442                             inBuffer.pos = 0;
 443                             outBuffer.dst = blockTable[blockNb].resPtr;
 444                             outBuffer.size = blockTable[blockNb].srcSize;
 445                             outBuffer.pos = 0;
 446                             rSize = ZSTD_decompressStream(zbd, &outBuffer, &inBuffer);
 447                             if (ZSTD_isError(rSize)) EXM_THROW(1, "ZSTD_decompressStream() failed : %s", ZSTD_getErrorName(rSize));
 448                             blockTable[blockNb].resSize = outBuffer.pos;
 449                         }
 450                         nbLoops++;
 451                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 452                     ZSTD_freeDStream(zbd);
 453                 } else if (compressor == BMK_ZWRAP_ZLIB_REUSE || compressor == BMK_ZWRAP_ZSTD_REUSE || compressor == BMK_ZLIB_REUSE) {
 454                     z_stream inf;
 455                     int ret;
 456                     if (compressor == BMK_ZLIB_REUSE) ZWRAP_setDecompressionType(ZWRAP_FORCE_ZLIB);
 457                     else ZWRAP_setDecompressionType(ZWRAP_AUTO);
 458                     inf.zalloc = Z_NULL;
 459                     inf.zfree = Z_NULL;
 460                     inf.opaque = Z_NULL;
 461                     ret = inflateInit(&inf);
 462                     if (ret != Z_OK) EXM_THROW(1, "inflateInit failure");
 463                     do {
 464                         U32 blockNb;
 465                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 466                             if (ZWRAP_isUsingZSTDdecompression(&inf))
 467                                 ret = ZWRAP_inflateReset_keepDict(&inf); /* reuse dictionary to make decompression faster; inflate will return Z_NEED_DICT only for the first time */
 468                             else
 469                                 ret = inflateReset(&inf);
 470                             if (ret != Z_OK) EXM_THROW(1, "inflateReset failure");
 471                             inf.next_in = (z_const z_Bytef*) blockTable[blockNb].cPtr;
 472                             inf.avail_in = (uInt)blockTable[blockNb].cSize;
 473                             inf.total_in = 0;
 474                             inf.next_out = (z_Bytef*) blockTable[blockNb].resPtr;
 475                             inf.avail_out = (uInt)blockTable[blockNb].srcSize;
 476                             inf.total_out = 0;
 477                             ret = inflate(&inf, Z_FINISH);
 478                             if (ret == Z_NEED_DICT) {
 479                                 ret = inflateSetDictionary(&inf, (const z_Bytef*)dictBuffer, dictBufferSize);
 480                                 if (ret != Z_OK) EXM_THROW(1, "inflateSetDictionary failure");
 481                                 ret = inflate(&inf, Z_FINISH);
 482                             }
 483                             if (ret != Z_STREAM_END) EXM_THROW(1, "inflate failure");
 484                             blockTable[blockNb].resSize = inf.total_out;
 485                         }
 486                         nbLoops++;
 487                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 488                     ret = inflateEnd(&inf);
 489                     if (ret != Z_OK) EXM_THROW(1, "inflateEnd failure");
 490                 } else {
 491                     z_stream inf;
 492                     if (compressor == BMK_ZLIB) ZWRAP_setDecompressionType(ZWRAP_FORCE_ZLIB);
 493                     else ZWRAP_setDecompressionType(ZWRAP_AUTO);
 494                     do {
 495                         U32 blockNb;
 496                         for (blockNb=0; blockNb<nbBlocks; blockNb++) {
 497                             int ret;
 498                             inf.zalloc = Z_NULL;
 499                             inf.zfree = Z_NULL;
 500                             inf.opaque = Z_NULL;
 501                             ret = inflateInit(&inf);
 502                             if (ret != Z_OK) EXM_THROW(1, "inflateInit failure");
 503                             inf.next_in = (z_const z_Bytef*) blockTable[blockNb].cPtr;
 504                             inf.avail_in = (uInt)blockTable[blockNb].cSize;
 505                             inf.total_in = 0;
 506                             inf.next_out = (z_Bytef*) blockTable[blockNb].resPtr;
 507                             inf.avail_out = (uInt)blockTable[blockNb].srcSize;
 508                             inf.total_out = 0;
 509                             ret = inflate(&inf, Z_FINISH);
 510                             if (ret == Z_NEED_DICT) {
 511                                 ret = inflateSetDictionary(&inf, (const z_Bytef*) dictBuffer, dictBufferSize);
 512                                 if (ret != Z_OK) EXM_THROW(1, "inflateSetDictionary failure");
 513                                 ret = inflate(&inf, Z_FINISH);
 514                             }
 515                             if (ret != Z_STREAM_END) EXM_THROW(1, "inflate failure");
 516                             ret = inflateEnd(&inf);
 517                             if (ret != Z_OK) EXM_THROW(1, "inflateEnd failure");
 518                             blockTable[blockNb].resSize = inf.total_out;
 519                         }
 520                         nbLoops++;
 521                     } while (UTIL_clockSpanMicro(clockStart) < clockLoop);
 522                 }
 523                 {   U64 const clockSpan = UTIL_clockSpanMicro(clockStart);
 524                     if (clockSpan < fastestD*nbLoops) fastestD = clockSpan / nbLoops;
 525                     totalDTime += clockSpan;
 526                     dCompleted = totalDTime>maxTime;
 527             }   }
 528
 529             markNb = (markNb+1) % NB_MARKS;
 530             DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.3f),%6.1f MB/s ,%6.1f MB/s\r",
 531                     marks[markNb], displayName, (unsigned)srcSize, (unsigned)cSize, ratio,
 532                     (double)srcSize / (double)fastestC,
 533                     (double)srcSize / (double)fastestD );
 534
 535             /* CRC Checking */
 536             {   U64 const crcCheck = XXH64(resultBuffer, srcSize, 0);
 537                 if (crcOrig!=crcCheck) {
 538                     size_t u;
 539                     DISPLAY("!!! WARNING !!! %14s : Invalid Checksum : %x != %x   \n", displayName, (unsigned)crcOrig, (unsigned)crcCheck);
 540                     for (u=0; u<srcSize; u++) {
 541                         if (((const BYTE*)srcBuffer)[u] != ((const BYTE*)resultBuffer)[u]) {
 542                             unsigned segNb, bNb, pos;
 543                             size_t bacc = 0;
 544                             DISPLAY("Decoding error at pos %u ", (unsigned)u);
 545                             for (segNb = 0; segNb < nbBlocks; segNb++) {
 546                                 if (bacc + blockTable[segNb].srcSize > u) break;
 547                                 bacc += blockTable[segNb].srcSize;
 548                             }
 549                             pos = (U32)(u - bacc);
 550                             bNb = pos / (128 KB);
 551                             DISPLAY("(block %u, sub %u, pos %u) \n", segNb, bNb, pos);
 552                             break;
 553                         }
 554                         if (u==srcSize-1) {  /* should never happen */
 555                             DISPLAY("no difference detected\n");
 556                     }   }
 557                     break;
 558             }   }   /* CRC Checking */
 559 #endif
 560         }   /* for (testNb = 1; testNb <= (g_nbIterations + !g_nbIterations); testNb++) */
 561
 562         if (g_displayLevel == 1) {
 563             double cSpeed = (double)srcSize / (double)fastestC;
 564             double dSpeed = (double)srcSize / (double)fastestD;
 565             if (g_additionalParam)
 566                 DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s  %s (param=%d)\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName, g_additionalParam);
 567             else
 568                 DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s  %s\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName);
 569         }
 570         DISPLAYLEVEL(2, "%2i#\n", cLevel);
 571     }   /* Bench */
 572
 573     /* clean up */
 574     free(blockTable);
 575     free(compressedBuffer);
 576     free(resultBuffer);
 577     ZSTD_freeCCtx(ctx);
 578     ZSTD_freeDCtx(dctx);
 579     return 0;
 580 }
 581
 582
 583 static size_t BMK_findMaxMem(U64 requiredMem)
 584 {
 585     size_t const step = 64 MB;
 586     BYTE* testmem = NULL;
 587
 588     requiredMem = (((requiredMem >> 26) + 1) << 26);
 589     requiredMem += step;
 590     if (requiredMem > maxMemory) requiredMem = maxMemory;
 591
 592     do {
 593         testmem = (BYTE*)malloc((size_t)requiredMem);
 594         requiredMem -= step;
 595     } while (!testmem && requiredMem);   /* do not allocate zero bytes */
 596
 597     free(testmem);
 598     return (size_t)(requiredMem+1);  /* avoid zero */
 599 }
 600
 601 static void BMK_benchCLevel(void* srcBuffer, size_t benchedSize,
 602                             const char* displayName, int cLevel, int cLevelLast,
 603                             const size_t* fileSizes, unsigned nbFiles,
 604                             const void* dictBuffer, size_t dictBufferSize)
 605 {
 606     int l;
 607
 608     const char* pch = strrchr(displayName, '\\'); /* Windows */
 609     if (!pch) pch = strrchr(displayName, '/'); /* Linux */
 610     if (pch) displayName = pch+1;
 611
 612     SET_REALTIME_PRIORITY;
 613
 614     if (g_displayLevel == 1 && !g_additionalParam)
 615         DISPLAY("bench %s %s: input %u bytes, %u seconds, %u KB blocks\n",
 616                 ZSTD_VERSION_STRING, ZSTD_GIT_COMMIT_STRING,
 617                 (unsigned)benchedSize, g_nbIterations, (unsigned)(g_blockSize>>10));
 618
 619     if (cLevelLast < cLevel) cLevelLast = cLevel;
 620
 621     DISPLAY("benchmarking zstd %s (using ZSTD_CStream)\n", ZSTD_VERSION_STRING);
 622     for (l=cLevel; l <= cLevelLast; l++) {
 623         BMK_benchMem(srcBuffer, benchedSize,
 624                      displayName, l,
 625                      fileSizes, nbFiles,
 626                      dictBuffer, dictBufferSize, BMK_ZSTD_STREAM);
 627     }
 628
 629     DISPLAY("benchmarking zstd %s (using ZSTD_CCtx)\n", ZSTD_VERSION_STRING);
 630     for (l=cLevel; l <= cLevelLast; l++) {
 631         BMK_benchMem(srcBuffer, benchedSize,
 632                      displayName, l,
 633                      fileSizes, nbFiles,
 634                      dictBuffer, dictBufferSize, BMK_ZSTD);
 635     }
 636
 637     DISPLAY("benchmarking zstd %s (using zlibWrapper)\n", ZSTD_VERSION_STRING);
 638     for (l=cLevel; l <= cLevelLast; l++) {
 639         BMK_benchMem(srcBuffer, benchedSize,
 640                      displayName, l,
 641                      fileSizes, nbFiles,
 642                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZSTD_REUSE);
 643     }
 644
 645     DISPLAY("benchmarking zstd %s (zlibWrapper not reusing a context)\n", ZSTD_VERSION_STRING);
 646     for (l=cLevel; l <= cLevelLast; l++) {
 647         BMK_benchMem(srcBuffer, benchedSize,
 648                      displayName, l,
 649                      fileSizes, nbFiles,
 650                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZSTD);
 651     }
 652
 653
 654     if (cLevelLast > Z_BEST_COMPRESSION) cLevelLast = Z_BEST_COMPRESSION;
 655
 656     DISPLAY("\n");
 657     DISPLAY("benchmarking zlib %s\n", ZLIB_VERSION);
 658     for (l=cLevel; l <= cLevelLast; l++) {
 659         BMK_benchMem(srcBuffer, benchedSize,
 660                      displayName, l,
 661                      fileSizes, nbFiles,
 662                      dictBuffer, dictBufferSize, BMK_ZLIB_REUSE);
 663     }
 664
 665     DISPLAY("benchmarking zlib %s (zlib not reusing a context)\n", ZLIB_VERSION);
 666     for (l=cLevel; l <= cLevelLast; l++) {
 667         BMK_benchMem(srcBuffer, benchedSize,
 668                      displayName, l,
 669                      fileSizes, nbFiles,
 670                      dictBuffer, dictBufferSize, BMK_ZLIB);
 671     }
 672
 673     DISPLAY("benchmarking zlib %s (using zlibWrapper)\n", ZLIB_VERSION);
 674     for (l=cLevel; l <= cLevelLast; l++) {
 675         BMK_benchMem(srcBuffer, benchedSize,
 676                      displayName, l,
 677                      fileSizes, nbFiles,
 678                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZLIB_REUSE);
 679     }
 680
 681     DISPLAY("benchmarking zlib %s (zlibWrapper not reusing a context)\n", ZLIB_VERSION);
 682     for (l=cLevel; l <= cLevelLast; l++) {
 683         BMK_benchMem(srcBuffer, benchedSize,
 684                      displayName, l,
 685                      fileSizes, nbFiles,
 686                      dictBuffer, dictBufferSize, BMK_ZWRAP_ZLIB);
 687     }
 688 }
 689
 690
 691 /*! BMK_loadFiles() :
 692     Loads `buffer` with content of files listed within `fileNamesTable`.
 693     At most, fills `buffer` entirely */
 694 static void BMK_loadFiles(void* buffer, size_t bufferSize,
 695                           size_t* fileSizes,
 696                           const char** fileNamesTable, unsigned nbFiles)
 697 {
 698     size_t pos = 0, totalSize = 0;
 699     unsigned n;
 700     for (n=0; n<nbFiles; n++) {
 701         FILE* f;
 702         U64 fileSize = UTIL_getFileSize(fileNamesTable[n]);
 703         if (UTIL_isDirectory(fileNamesTable[n])) {
 704             DISPLAYLEVEL(2, "Ignoring %s directory...       \n", fileNamesTable[n]);
 705             fileSizes[n] = 0;
 706             continue;
 707         }
 708         if (fileSize == UTIL_FILESIZE_UNKNOWN) {
 709             DISPLAYLEVEL(2, "Cannot determine size of %s ...    \n", fileNamesTable[n]);
 710             fileSizes[n] = 0;
 711             continue;
 712         }
 713         f = fopen(fileNamesTable[n], "rb");
 714         if (f==NULL) EXM_THROW(10, "impossible to open file %s", fileNamesTable[n]);
 715         DISPLAYUPDATE(2, "Loading %s...       \r", fileNamesTable[n]);
 716         if (fileSize > bufferSize-pos) fileSize = bufferSize-pos, nbFiles=n;   /* buffer too small - stop after this file */
 717         { size_t const readSize = fread(((char*)buffer)+pos, 1, (size_t)fileSize, f);
 718           if (readSize != (size_t)fileSize) EXM_THROW(11, "could not read %s", fileNamesTable[n]);
 719           pos += readSize; }
 720         fileSizes[n] = (size_t)fileSize;
 721         totalSize += (size_t)fileSize;
 722         fclose(f);
 723     }
 724
 725     if (totalSize == 0) EXM_THROW(12, "no data to bench");
 726 }
 727
 728 static void BMK_benchFileTable(const char** fileNamesTable, unsigned nbFiles,
 729                                const char* dictFileName, int cLevel, int cLevelLast)
 730 {
 731     void* srcBuffer;
 732     size_t benchedSize;
 733     void* dictBuffer = NULL;
 734     size_t dictBufferSize = 0;
 735     size_t* fileSizes = (size_t*)malloc(nbFiles * sizeof(size_t));
 736     U64 const totalSizeToLoad = UTIL_getTotalFileSize(fileNamesTable, nbFiles);
 737     char mfName[20] = {0};
 738
 739     if (!fileSizes) EXM_THROW(12, "not enough memory for fileSizes");
 740
 741     /* Load dictionary */
 742     if (dictFileName != NULL) {
 743         U64 const dictFileSize = UTIL_getFileSize(dictFileName);
 744         if (dictFileSize > 64 MB)
 745             EXM_THROW(10, "dictionary file %s too large", dictFileName);
 746         dictBufferSize = (size_t)dictFileSize;
 747         dictBuffer = malloc(dictBufferSize);
 748         if (dictBuffer==NULL)
 749             EXM_THROW(11, "not enough memory for dictionary (%u bytes)", (unsigned)dictBufferSize);
 750         BMK_loadFiles(dictBuffer, dictBufferSize, fileSizes, &dictFileName, 1);
 751     }
 752
 753     /* Memory allocation & restrictions */
 754     benchedSize = BMK_findMaxMem(totalSizeToLoad * 3) / 3;
 755     if ((U64)benchedSize > totalSizeToLoad) benchedSize = (size_t)totalSizeToLoad;
 756     if (benchedSize < totalSizeToLoad)
 757         DISPLAY("Not enough memory; testing %u MB only...\n", (unsigned)(benchedSize >> 20));
 758     srcBuffer = malloc(benchedSize + !benchedSize);
 759     if (!srcBuffer) EXM_THROW(12, "not enough memory");
 760
 761     /* Load input buffer */
 762     BMK_loadFiles(srcBuffer, benchedSize, fileSizes, fileNamesTable, nbFiles);
 763
 764     /* Bench */
 765     snprintf (mfName, sizeof(mfName), " %u files", nbFiles);
 766     {   const char* displayName = (nbFiles > 1) ? mfName : fileNamesTable[0];
 767         BMK_benchCLevel(srcBuffer, benchedSize,
 768                         displayName, cLevel, cLevelLast,
 769                         fileSizes, nbFiles,
 770                         dictBuffer, dictBufferSize);
 771     }
 772
 773     /* clean up */
 774     free(srcBuffer);
 775     free(dictBuffer);
 776     free(fileSizes);
 777 }
 778
 779
 780 static void BMK_syntheticTest(int cLevel, int cLevelLast, double compressibility)
 781 {
 782     char name[20] = {0};
 783     size_t benchedSize = 10000000;
 784     void* const srcBuffer = malloc(benchedSize);
 785
 786     /* Memory allocation */
 787     if (!srcBuffer) EXM_THROW(21, "not enough memory");
 788
 789     /* Fill input buffer */
 790     RDG_genBuffer(srcBuffer, benchedSize, compressibility, 0.0, 0);
 791
 792     /* Bench */
 793     snprintf (name, sizeof(name), "Synthetic %2u%%", (unsigned)(compressibility*100));
 794     BMK_benchCLevel(srcBuffer, benchedSize, name, cLevel, cLevelLast, &benchedSize, 1, NULL, 0);
 795
 796     /* clean up */
 797     free(srcBuffer);
 798 }
 799
 800
 801 static int BMK_benchFiles(const char** fileNamesTable, unsigned nbFiles,
 802                    const char* dictFileName, int cLevel, int cLevelLast)
 803 {
 804     double const compressibility = (double)g_compressibilityDefault / 100;
 805
 806     if (nbFiles == 0)
 807         BMK_syntheticTest(cLevel, cLevelLast, compressibility);
 808     else
 809         BMK_benchFileTable(fileNamesTable, nbFiles, dictFileName, cLevel, cLevelLast);
 810     return 0;
 811 }
 812
 813
 814
 815
 816 /*-************************************
 817 *  Command Line
 818 **************************************/
 819 static int usage(const char* programName)
 820 {
 821     DISPLAY(WELCOME_MESSAGE);
 822     DISPLAY( "Usage :\n");
 823     DISPLAY( "      %s [args] [FILE(s)] [-o file]\n", programName);
 824     DISPLAY( "\n");
 825     DISPLAY( "FILE    : a filename\n");
 826     DISPLAY( "          with no FILE, or when FILE is - , read standard input\n");
 827     DISPLAY( "Arguments :\n");
 828     DISPLAY( " -D file: use `file` as Dictionary \n");
 829     DISPLAY( " -h/-H  : display help/long help and exit\n");
 830     DISPLAY( " -V     : display Version number and exit\n");
 831     DISPLAY( " -v     : verbose mode; specify multiple times to increase log level (default:%d)\n", DEFAULT_DISPLAY_LEVEL);
 832     DISPLAY( " -q     : suppress warnings; specify twice to suppress errors too\n");
 833 #ifdef UTIL_HAS_CREATEFILELIST
 834     DISPLAY( " -r     : operate recursively on directories\n");
 835 #endif
 836     DISPLAY( "\n");
 837     DISPLAY( "Benchmark arguments :\n");
 838     DISPLAY( " -b#    : benchmark file(s), using # compression level (default : %d) \n", ZSTDCLI_CLEVEL_DEFAULT);
 839     DISPLAY( " -e#    : test all compression levels from -bX to # (default: %d)\n", ZSTDCLI_CLEVEL_DEFAULT);
 840     DISPLAY( " -i#    : minimum evaluation time in seconds (default : 3s)\n");
 841     DISPLAY( " -B#    : cut file into independent chunks of size # (default: no chunking)\n");
 842     return 0;
 843 }
 844
 845 static int badusage(const char* programName)
 846 {
 847     DISPLAYLEVEL(1, "Incorrect parameters\n");
 848     if (g_displayLevel >= 1) usage(programName);
 849     return 1;
 850 }
 851
 852 static void waitEnter(void)
 853 {
 854     int unused;
 855     DISPLAY("Press enter to continue...\n");
 856     unused = getchar();
 857     (void)unused;
 858 }
 859
 860 /*! readU32FromChar() :
 861     @return : unsigned integer value reach from input in `char` format
 862     Will also modify `*stringPtr`, advancing it to position where it stopped reading.
 863     Note : this function can overflow if digit string > MAX_UINT */
 864 static unsigned readU32FromChar(const char** stringPtr)
 865 {
 866     unsigned result = 0;
 867     while ((**stringPtr >='0') && (**stringPtr <='9'))
 868         result *= 10, result += (unsigned)(**stringPtr - '0'), (*stringPtr)++ ;
 869     return result;
 870 }
 871
 872
 873 #define CLEAN_RETURN(i) { operationResult = (i); goto _end; }
 874
 875 int main(int argCount, char** argv)
 876 {
 877     int argNb,
 878         main_pause=0,
 879         nextEntryIsDictionary=0,
 880         operationResult=0,
 881         nextArgumentIsFile=0;
 882     int cLevel = ZSTDCLI_CLEVEL_DEFAULT;
 883     int cLevelLast = 1;
 884     unsigned recursive = 0;
 885     FileNamesTable* filenames = UTIL_allocateFileNamesTable((size_t)argCount);
 886     const char* programName = argv[0];
 887     const char* dictFileName = NULL;
 888     char* dynNameSpace = NULL;
 889
 890     /* init */
 891     if (filenames==NULL) { DISPLAY("zstd: %s \n", strerror(errno)); exit(1); }
 892     displayOut = stderr;
 893
 894     /* Pick out program name from path. Don't rely on stdlib because of conflicting behavior */
 895     {   size_t pos;
 896         for (pos = strlen(programName); pos > 0; pos--) { if (programName[pos] == '/') { pos++; break; } }
 897         programName += pos;
 898     }
 899
 900      /* command switches */
 901     for(argNb=1; argNb<argCount; argNb++) {
 902         const char* argument = argv[argNb];
 903         if(!argument) continue;   /* Protection if argument empty */
 904
 905         if (nextArgumentIsFile==0) {
 906
 907             /* long commands (--long-word) */
 908             if (!strcmp(argument, "--")) { nextArgumentIsFile=1; continue; }
 909             if (!strcmp(argument, "--version")) { displayOut=stdout; DISPLAY(WELCOME_MESSAGE); CLEAN_RETURN(0); }
 910             if (!strcmp(argument, "--help")) { displayOut=stdout; CLEAN_RETURN(usage(programName)); }
 911             if (!strcmp(argument, "--verbose")) { g_displayLevel++; continue; }
 912             if (!strcmp(argument, "--quiet")) { g_displayLevel--; continue; }
 913
 914             /* Decode commands (note : aggregated commands are allowed) */
 915             if (argument[0]=='-') {
 916                 argument++;
 917
 918                 while (argument[0]!=0) {
 919                     switch(argument[0])
 920                     {
 921                         /* Display help */
 922                     case 'V': displayOut=stdout; DISPLAY(WELCOME_MESSAGE); CLEAN_RETURN(0);   /* Version Only */
 923                     case 'H':
 924                     case 'h': displayOut=stdout; CLEAN_RETURN(usage(programName));
 925
 926                         /* Use file content as dictionary */
 927                     case 'D': nextEntryIsDictionary = 1; argument++; break;
 928
 929                         /* Verbose mode */
 930                     case 'v': g_displayLevel++; argument++; break;
 931
 932                         /* Quiet mode */
 933                     case 'q': g_displayLevel--; argument++; break;
 934
 935 #ifdef UTIL_HAS_CREATEFILELIST
 936                         /* recursive */
 937                     case 'r': recursive=1; argument++; break;
 938 #endif
 939
 940                         /* Benchmark */
 941                     case 'b':
 942                             /* first compression Level */
 943                             argument++;
 944                             cLevel = (int)readU32FromChar(&argument);
 945                             break;
 946
 947                         /* range bench (benchmark only) */
 948                     case 'e':
 949                             /* last compression Level */
 950                             argument++;
 951                             cLevelLast = (int)readU32FromChar(&argument);
 952                             break;
 953
 954                         /* Modify Nb Iterations (benchmark only) */
 955                     case 'i':
 956                         argument++;
 957                         {   U32 const iters = readU32FromChar(&argument);
 958                             BMK_setNotificationLevel(g_displayLevel);
 959                             BMK_SetNbIterations(iters);
 960                         }
 961                         break;
 962
 963                         /* cut input into blocks (benchmark only) */
 964                     case 'B':
 965                         argument++;
 966                         {   size_t bSize = readU32FromChar(&argument);
 967                             if (toupper(*argument)=='K') bSize<<=10, argument++;  /* allows using KB notation */
 968                             if (toupper(*argument)=='M') bSize<<=20, argument++;
 969                             if (toupper(*argument)=='B') argument++;
 970                             BMK_setNotificationLevel(g_displayLevel);
 971                             BMK_SetBlockSize(bSize);
 972                         }
 973                         break;
 974
 975                         /* Pause at the end (-p) or set an additional param (-p#) (hidden option) */
 976                     case 'p': argument++;
 977                         if ((*argument>='0') && (*argument<='9')) {
 978                             BMK_setAdditionalParam((int)readU32FromChar(&argument));
 979                         } else
 980                             main_pause=1;
 981                         break;
 982                         /* unknown command */
 983                     default : CLEAN_RETURN(badusage(programName));
 984                     }
 985                 }
 986                 continue;
 987             }   /* if (argument[0]=='-') */
 988
 989         }   /* if (nextArgumentIsAFile==0) */
 990
 991         if (nextEntryIsDictionary) {
 992             nextEntryIsDictionary = 0;
 993             dictFileName = argument;
 994             continue;
 995         }
 996
 997         /* add filename to list */
 998         UTIL_refFilename(filenames, argument);
 999     }
1000
1001     /* Welcome message (if verbose) */
1002     DISPLAYLEVEL(3, WELCOME_MESSAGE);
1003
1004 #ifdef UTIL_HAS_CREATEFILELIST
1005     if (recursive) {
1006         UTIL_expandFNT(&filenames, 1);
1007     }
1008 #endif
1009
1010     BMK_setNotificationLevel(g_displayLevel);
1011     BMK_benchFiles(filenames->fileNames, (unsigned)filenames->tableSize, dictFileName, cLevel, cLevelLast);
1012
1013 _end:
1014     if (main_pause) waitEnter();
1015     free(dynNameSpace);
1016     UTIL_freeFileNamesTable(filenames);
1017     return operationResult;
1018 }