/* paramgrill.c - parameter tester for zstd Copyright (C) Yann Collet 2015-2016 GPL v2 License This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. You can contact the author at : - zstd homepage : http://www.zstd.net/ */ /*-************************************ * Compiler Options **************************************/ /* Disable some Visual warning messages */ #define _CRT_SECURE_NO_WARNINGS #define _CRT_SECURE_NO_DEPRECATE /* VS2005 */ /* Unix Large Files support (>4GB) */ #if (defined(__sun__) && (!defined(__LP64__))) /* Sun Solaris 32-bits requires specific definitions */ # define _LARGEFILE_SOURCE # define _FILE_OFFSET_BITS 64 #elif ! defined(__LP64__) /* No point defining Large file for 64 bit */ # define _LARGEFILE64_SOURCE #endif /* S_ISREG & gettimeofday() are not supported by MSVC */ #if defined(_MSC_VER) || defined(_WIN32) # define BMK_LEGACY_TIMER 1 #endif #if defined(_MSC_VER) # define snprintf _snprintf /* snprintf unsupported by Visual <= 2012 */ #endif /*-************************************ * Dependencies **************************************/ #include /* malloc */ #include /* fprintf, fopen, ftello64 */ #include /* stat64 */ #include /* stat64 */ #include /* strcmp */ #include /* log */ /* Use ftime() if gettimeofday() is not available on your target */ #if defined(BMK_LEGACY_TIMER) # include /* timeb, ftime */ #else # include /* gettimeofday */ #endif #include "mem.h" #include "zstd_static.h" #include "datagen.h" #include "xxhash.h" /*-************************************ * Compiler Options **************************************/ /* S_ISREG & gettimeofday() are not supported by MSVC */ #if !defined(S_ISREG) # define S_ISREG(x) (((x) & S_IFMT) == S_IFREG) #endif /*-************************************ * Constants **************************************/ #define PROGRAM_DESCRIPTION "ZSTD_HC parameters tester" #ifndef ZSTD_VERSION # define ZSTD_VERSION "" #endif #define AUTHOR "Yann Collet" #define WELCOME_MESSAGE "*** %s %s %i-bits, by %s (%s) ***\n", PROGRAM_DESCRIPTION, ZSTD_VERSION, (int)(sizeof(void*)*8), AUTHOR, __DATE__ #define KB *(1<<10) #define MB *(1<<20) #define GB *(1ULL<<30) #define NBLOOPS 2 #define TIMELOOP 2000 #define NB_LEVELS_TRACKED 30 static const size_t maxMemory = (sizeof(size_t)==4) ? (2 GB - 64 MB) : (size_t)(1ULL << ((sizeof(size_t)*8)-31)); #define DEFAULT_CHUNKSIZE (4<<20) #define COMPRESSIBILITY_DEFAULT 0.50 static const size_t sampleSize = 10000000; static const int g_grillDuration = 50000000; /* about 13 hours */ static const int g_maxParamTime = 15000; /* 15 sec */ static const int g_maxVariationTime = 60000; /* 60 sec */ static const int g_maxNbVariations = 64; /*-************************************ * Macros **************************************/ #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) /*-************************************ * Benchmark Parameters **************************************/ static U32 g_nbIterations = NBLOOPS; static double g_compressibility = COMPRESSIBILITY_DEFAULT; static U32 g_blockSize = 0; static U32 g_rand = 1; static U32 g_singleRun = 0; static U32 g_target = 0; static U32 g_noSeed = 0; static ZSTD_parameters g_params = { 0, 0, 0, 0, 0, 0, 0, ZSTD_greedy }; void BMK_SetNbIterations(int nbLoops) { g_nbIterations = nbLoops; DISPLAY("- %u iterations -\n", g_nbIterations); } /*-******************************************************* * Private functions *********************************************************/ #if defined(BMK_LEGACY_TIMER) static int BMK_GetMilliStart(void) { /* Based on Legacy ftime() * Rolls over every ~ 12.1 days (0x100000/24/60/60) * Use GetMilliSpan to correct for rollover */ struct timeb tb; int nCount; ftime( &tb ); nCount = (int) (tb.millitm + (tb.time & 0xfffff) * 1000); return nCount; } #else static int BMK_GetMilliStart(void) { /* Based on newer gettimeofday() * Use GetMilliSpan to correct for rollover */ struct timeval tv; int nCount; gettimeofday(&tv, NULL); nCount = (int) (tv.tv_usec/1000 + (tv.tv_sec & 0xfffff) * 1000); return nCount; } #endif static int BMK_GetMilliSpan( int nTimeStart ) { int nSpan = BMK_GetMilliStart() - nTimeStart; if ( nSpan < 0 ) nSpan += 0x100000 * 1000; return nSpan; } static size_t BMK_findMaxMem(U64 requiredMem) { size_t step = 64 MB; BYTE* testmem=NULL; requiredMem = (((requiredMem >> 26) + 1) << 26); if (requiredMem > maxMemory) requiredMem = maxMemory; requiredMem += 2*step; while (!testmem) { requiredMem -= step; testmem = (BYTE*) malloc ((size_t)requiredMem); } free (testmem); return (size_t) (requiredMem - step); } static U64 BMK_GetFileSize(char* infilename) { int r; #if defined(_MSC_VER) struct _stat64 statbuf; r = _stat64(infilename, &statbuf); #else struct stat statbuf; r = stat(infilename, &statbuf); #endif if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */ return (U64)statbuf.st_size; } # define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r))) U32 FUZ_rand(U32* src) { const U32 prime1 = 2654435761U; const U32 prime2 = 2246822519U; U32 rand32 = *src; rand32 *= prime1; rand32 += prime2; rand32 = FUZ_rotl32(rand32, 13); *src = rand32; return rand32 >> 5; } /*-******************************************************* * Bench functions *********************************************************/ typedef struct { size_t cSize; U32 cSpeed; U32 dSpeed; } BMK_result_t; typedef struct { const char* srcPtr; size_t srcSize; char* cPtr; size_t cRoom; size_t cSize; char* resPtr; size_t resSize; } blockParam_t; #define MIN(a,b) ( (a) < (b) ? (a) : (b) ) static size_t BMK_benchParam(BMK_result_t* resultPtr, const void* srcBuffer, size_t srcSize, ZSTD_CCtx* ctx, const ZSTD_parameters params) { const size_t blockSize = g_blockSize ? g_blockSize : srcSize; const U32 nbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize); blockParam_t* const blockTable = (blockParam_t*) malloc(nbBlocks * sizeof(blockParam_t)); const size_t maxCompressedSize = (size_t)nbBlocks * ZSTD_compressBound(blockSize); void* const compressedBuffer = malloc(maxCompressedSize); void* const resultBuffer = malloc(srcSize); U32 Wlog = params.windowLog; U32 Clog = params.contentLog; U32 Hlog = params.hashLog; U32 Slog = params.searchLog; U32 Slength = params.searchLength; U32 Tlength = params.targetLength; ZSTD_strategy strat = params.strategy; char name[30] = { 0 }; U64 crcOrig; /* Memory allocation & restrictions */ snprintf(name, 30, "Sw%02uc%02uh%02us%02ul%1ut%03uS%1u", Wlog, Clog, Hlog, Slog, Slength, Tlength, strat); if (!compressedBuffer || !resultBuffer || !blockTable) { DISPLAY("\nError: not enough memory!\n"); free(compressedBuffer); free(resultBuffer); free(blockTable); return 12; } /* Calculating input Checksum */ crcOrig = XXH64(srcBuffer, srcSize, 0); /* Init blockTable data */ { U32 i; size_t remaining = srcSize; const char* srcPtr = (const char*)srcBuffer; char* cPtr = (char*)compressedBuffer; char* resPtr = (char*)resultBuffer; for (i=0; i g_maxParamTime) break; /* Compression */ DISPLAY("\r%1u-%s : %9u ->", loopNb, name, (U32)srcSize); memset(compressedBuffer, 0xE5, maxCompressedSize); nbLoops = 0; milliTime = BMK_GetMilliStart(); while (BMK_GetMilliStart() == milliTime); milliTime = BMK_GetMilliStart(); while (BMK_GetMilliSpan(milliTime) < TIMELOOP) { for (blockNb=0; blockNb", loopNb, name, (U32)srcSize); DISPLAY(" %9u (%4.3f),%7.1f MB/s", (U32)cSize, ratio, (double)srcSize / fastestC / 1000.); resultPtr->cSize = cSize; resultPtr->cSpeed = (U32)((double)srcSize / fastestC); #if 1 /* Decompression */ memset(resultBuffer, 0xD6, srcSize); nbLoops = 0; milliTime = BMK_GetMilliStart(); while (BMK_GetMilliStart() == milliTime); milliTime = BMK_GetMilliStart(); for ( ; BMK_GetMilliSpan(milliTime) < TIMELOOP; nbLoops++) { for (blockNb=0; blockNb ", loopNb, name, (U32)srcSize); DISPLAY("%9u (%4.3f),%7.1f MB/s, ", (U32)cSize, ratio, (double)srcSize / fastestC / 1000.); DISPLAY("%7.1f MB/s", (double)srcSize / fastestD / 1000.); resultPtr->dSpeed = (U32)((double)srcSize / fastestD); /* CRC Checking */ crcCheck = XXH64(resultBuffer, srcSize, 0); if (crcOrig!=crcCheck) { unsigned u; unsigned eBlockSize = (unsigned)(MIN(65536*2, blockSize)); DISPLAY("\n!!! WARNING !!! Invalid Checksum : %x != %x\n", (unsigned)crcOrig, (unsigned)crcCheck); for (u=0; u O_ratio) DISPLAY ("Decompression Memory : %5.3f @ %4.1f MB vs %5.3f @ %4.1f MB : not enough for level %i\n", W_ratio, (double)(W_DMemUsed) / 1024 / 1024, O_ratio, (double)(O_DMemUsed) / 1024 / 1024, cLevel); continue; } if (W_CMemUsed_note < O_CMemUsed_note) { /* uses too much memory for compression for too little benefit */ if (W_ratio > O_ratio) DISPLAY ("Compression Memory : %5.3f @ %4.1f MB vs %5.3f @ %4.1f MB : not enough for level %i\n", W_ratio, (double)(W_CMemUsed) / 1024 / 1024, O_ratio, (double)(O_CMemUsed) / 1024 / 1024, cLevel); continue; } if (W_CSpeed_note < O_CSpeed_note ) { /* too large compression speed difference for the compression benefit */ if (W_ratio > O_ratio) DISPLAY ("Compression Speed : %5.3f @ %4.1f MB/s vs %5.3f @ %4.1f MB/s : not enough for level %i\n", W_ratio, (double)(testResult.cSpeed) / 1000., O_ratio, (double)(winners[cLevel].result.cSpeed) / 1000., cLevel); continue; } if (W_DSpeed_note < O_DSpeed_note ) { /* too large decompression speed difference for the compression benefit */ if (W_ratio > O_ratio) DISPLAY ("Decompression Speed : %5.3f @ %4.1f MB/s vs %5.3f @ %4.1f MB/s : not enough for level %i\n", W_ratio, (double)(testResult.dSpeed) / 1000., O_ratio, (double)(winners[cLevel].result.dSpeed) / 1000., cLevel); continue; } if (W_ratio < O_ratio) DISPLAY("Solution %4.3f selected over %4.3f at level %i, due to better secondary statistics \n", W_ratio, O_ratio, cLevel); winners[cLevel].result = testResult; winners[cLevel].params = params; BMK_printWinner(stdout, cLevel, testResult, params, srcSize); better = 1; } } return better; } /* nullified useless params, to ensure count stats */ static ZSTD_parameters* sanitizeParams(ZSTD_parameters params) { g_params = params; if (params.strategy == ZSTD_fast) g_params.contentLog = 0, g_params.searchLog = 0; if ((params.strategy != ZSTD_opt) && (params.strategy != ZSTD_opt_bt)) g_params.targetLength = 0; return &g_params; } static void paramVariation(ZSTD_parameters* p) { U32 nbChanges = (FUZ_rand(&g_rand) & 3) + 1; for (; nbChanges; nbChanges--) { const U32 changeID = FUZ_rand(&g_rand) % 14; switch(changeID) { case 0: p->contentLog++; break; case 1: p->contentLog--; break; case 2: p->hashLog++; break; case 3: p->hashLog--; break; case 4: p->searchLog++; break; case 5: p->searchLog--; break; case 6: p->windowLog++; break; case 7: p->windowLog--; break; case 8: p->searchLength++; break; case 9: p->searchLength--; break; case 10: p->strategy = (ZSTD_strategy)(((U32)p->strategy)+1); break; case 11: p->strategy = (ZSTD_strategy)(((U32)p->strategy)-1); break; case 12: p->targetLength *= 1 + ((double)(FUZ_rand(&g_rand)&255)) / 256.; break; case 13: p->targetLength /= 1 + ((double)(FUZ_rand(&g_rand)&255)) / 256.; break; } } ZSTD_validateParams(p); } #define PARAMTABLELOG 25 #define PARAMTABLESIZE (1<> 3) & PARAMTABLEMASK] #define MAX(a,b) ( (a) > (b) ? (a) : (b) ) static void playAround(FILE* f, winnerInfo_t* winners, ZSTD_parameters params, const void* srcBuffer, size_t srcSize, ZSTD_CCtx* ctx) { int nbVariations = 0; const int startTime = BMK_GetMilliStart(); while (BMK_GetMilliSpan(startTime) < g_maxVariationTime) { ZSTD_parameters p = params; if (nbVariations++ > g_maxNbVariations) break; paramVariation(&p); /* exclude faster if already played params */ if (FUZ_rand(&g_rand) & ((1 << NB_TESTS_PLAYED(p))-1)) continue; /* test */ NB_TESTS_PLAYED(p)++; if (!BMK_seed(winners, p, srcBuffer, srcSize, ctx)) continue; /* improvement found => search more */ BMK_printWinners(f, winners, srcSize); playAround(f, winners, p, srcBuffer, srcSize, ctx); } } static void potentialRandomParams(ZSTD_parameters* p, U32 inverseChance) { U32 chance = (FUZ_rand(&g_rand) % (inverseChance+1)); if (!chance) { /* totally random entry */ p->contentLog = FUZ_rand(&g_rand) % (ZSTD_CONTENTLOG_MAX+1 - ZSTD_CONTENTLOG_MIN) + ZSTD_CONTENTLOG_MIN; p->hashLog = FUZ_rand(&g_rand) % (ZSTD_HASHLOG_MAX+1 - ZSTD_HASHLOG_MIN) + ZSTD_HASHLOG_MIN; p->searchLog = FUZ_rand(&g_rand) % (ZSTD_SEARCHLOG_MAX+1 - ZSTD_SEARCHLOG_MIN) + ZSTD_SEARCHLOG_MIN; p->windowLog = FUZ_rand(&g_rand) % (ZSTD_WINDOWLOG_MAX+1 - ZSTD_WINDOWLOG_MIN) + ZSTD_WINDOWLOG_MIN; p->searchLength=FUZ_rand(&g_rand) % (ZSTD_SEARCHLENGTH_MAX+1 - ZSTD_SEARCHLENGTH_MIN) + ZSTD_SEARCHLENGTH_MIN; p->targetLength=FUZ_rand(&g_rand) % (ZSTD_TARGETLENGTH_MAX+1 - ZSTD_TARGETLENGTH_MIN) + ZSTD_TARGETLENGTH_MIN; p->strategy = (ZSTD_strategy) (FUZ_rand(&g_rand) % (ZSTD_opt_bt+1)); ZSTD_validateParams(p); } } static void BMK_selectRandomStart( FILE* f, winnerInfo_t* winners, const void* srcBuffer, size_t srcSize, ZSTD_CCtx* ctx) { U32 id = (FUZ_rand(&g_rand) % (ZSTD_maxCLevel()+1)); if ((id==0) || (winners[id].params.windowLog==0)) { /* totally random entry */ ZSTD_parameters p; potentialRandomParams(&p, 1); p.srcSize = srcSize; ZSTD_validateParams(&p); playAround(f, winners, p, srcBuffer, srcSize, ctx); } else playAround(f, winners, winners[id].params, srcBuffer, srcSize, ctx); } static void BMK_benchMem(void* srcBuffer, size_t srcSize) { ZSTD_CCtx* ctx = ZSTD_createCCtx(); ZSTD_parameters params; winnerInfo_t winners[NB_LEVELS_TRACKED]; int i; unsigned u; const char* rfName = "grillResults.txt"; FILE* f; const size_t blockSize = g_blockSize ? g_blockSize : srcSize; if (g_singleRun) { BMK_result_t testResult; g_params.srcSize = blockSize; ZSTD_validateParams(&g_params); BMK_benchParam(&testResult, srcBuffer, srcSize, ctx, g_params); DISPLAY("\n"); return; } /* init */ memset(winners, 0, sizeof(winners)); f = fopen(rfName, "w"); if (f==NULL) { DISPLAY("error opening %s \n", rfName); exit(1); } if (g_target) g_cSpeedTarget[1] = g_target * 1000; else { /* baseline config for level 1 */ BMK_result_t testResult; params = ZSTD_getParams(1, blockSize); BMK_benchParam(&testResult, srcBuffer, srcSize, ctx, params); g_cSpeedTarget[1] = (testResult.cSpeed * 31) >> 5; } /* establish speed objectives (relative to level 1) */ for (u=2; u<=ZSTD_maxCLevel(); u++) g_cSpeedTarget[u] = (g_cSpeedTarget[u-1] * 25) >> 5; /* populate initial solution */ { const int maxSeeds = g_noSeed ? 1 : ZSTD_maxCLevel(); for (i=1; i<=maxSeeds; i++) { params = ZSTD_getParams(i, blockSize); ZSTD_validateParams(¶ms); BMK_seed(winners, params, srcBuffer, srcSize, ctx); } } BMK_printWinners(f, winners, srcSize); /* start tests */ { const int milliStart = BMK_GetMilliStart(); do { BMK_selectRandomStart(f, winners, srcBuffer, srcSize, ctx); } while (BMK_GetMilliSpan(milliStart) < g_grillDuration); } /* end summary */ BMK_printWinners(f, winners, srcSize); DISPLAY("grillParams operations completed \n"); /* clean up*/ fclose(f); ZSTD_freeCCtx(ctx); } static int benchSample(void) { void* origBuff; size_t benchedSize = sampleSize; const char* name = "Sample 10MiB"; /* Allocation */ origBuff = malloc(benchedSize); if (!origBuff) { DISPLAY("\nError: not enough memory!\n"); return 12; } /* Fill buffer */ RDG_genBuffer(origBuff, benchedSize, g_compressibility, 0.0, 0); /* bench */ DISPLAY("\r%79s\r", ""); DISPLAY("using %s %i%%: \n", name, (int)(g_compressibility*100)); BMK_benchMem(origBuff, benchedSize); free(origBuff); return 0; } int benchFiles(char** fileNamesTable, int nbFiles) { int fileIdx=0; /* Loop for each file */ while (fileIdx inFileSize) benchedSize = (size_t)inFileSize; if (benchedSize < inFileSize) DISPLAY("Not enough memory for '%s' full size; testing %i MB only...\n", inFileName, (int)(benchedSize>>20)); /* Alloc */ origBuff = (char*) malloc((size_t)benchedSize); if(!origBuff) { DISPLAY("\nError: not enough memory!\n"); fclose(inFile); return 12; } /* Fill input buffer */ DISPLAY("Loading %s... \r", inFileName); readSize = fread(origBuff, 1, benchedSize, inFile); fclose(inFile); if(readSize != benchedSize) { DISPLAY("\nError: problem reading file '%s' !! \n", inFileName); free(origBuff); return 13; } /* bench */ DISPLAY("\r%79s\r", ""); DISPLAY("using %s : \n", inFileName); BMK_benchMem(origBuff, benchedSize); } return 0; } int optimizeForSize(char* inFileName) { FILE* inFile; U64 inFileSize; size_t benchedSize; size_t readSize; char* origBuff; /* Check file existence */ inFile = fopen( inFileName, "rb" ); if (inFile==NULL) { DISPLAY( "Pb opening %s\n", inFileName); return 11; } /* Memory allocation & restrictions */ inFileSize = BMK_GetFileSize(inFileName); benchedSize = (size_t) BMK_findMaxMem(inFileSize*3) / 3; if ((U64)benchedSize > inFileSize) benchedSize = (size_t)inFileSize; if (benchedSize < inFileSize) DISPLAY("Not enough memory for '%s' full size; testing %i MB only...\n", inFileName, (int)(benchedSize>>20)); /* Alloc */ origBuff = (char*) malloc((size_t)benchedSize); if(!origBuff) { DISPLAY("\nError: not enough memory!\n"); fclose(inFile); return 12; } /* Fill input buffer */ DISPLAY("Loading %s... \r", inFileName); readSize = fread(origBuff, 1, benchedSize, inFile); fclose(inFile); if(readSize != benchedSize) { DISPLAY("\nError: problem reading file '%s' !! \n", inFileName); free(origBuff); return 13; } /* bench */ DISPLAY("\r%79s\r", ""); DISPLAY("optimizing for %s : \n", inFileName); { ZSTD_CCtx* ctx = ZSTD_createCCtx(); ZSTD_parameters params; winnerInfo_t winner; BMK_result_t candidate; const size_t blockSize = g_blockSize ? g_blockSize : benchedSize; int i; /* init */ memset(&winner, 0, sizeof(winner)); winner.result.cSize = (size_t)(-1); /* find best solution from default params */ { const int maxSeeds = g_noSeed ? 1 : ZSTD_maxCLevel(); for (i=1; i<=maxSeeds; i++) { params = ZSTD_getParams(i, blockSize); BMK_benchParam(&candidate, origBuff, benchedSize, ctx, params); if ( (candidate.cSize < winner.result.cSize) ||((candidate.cSize == winner.result.cSize) && (candidate.cSpeed > winner.result.cSpeed)) ) { winner.params = params; winner.result = candidate; BMK_printWinner(stdout, i, winner.result, winner.params, benchedSize); } } } BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize); /* start tests */ { const int milliStart = BMK_GetMilliStart(); do { params = winner.params; paramVariation(¶ms); potentialRandomParams(¶ms, 16); /* exclude faster if already played set of params */ if (FUZ_rand(&g_rand) & ((1 << NB_TESTS_PLAYED(params))-1)) continue; /* test */ NB_TESTS_PLAYED(params)++; BMK_benchParam(&candidate, origBuff, benchedSize, ctx, params); /* improvement found => new winner */ if ( (candidate.cSize < winner.result.cSize) ||((candidate.cSize == winner.result.cSize) && (candidate.cSpeed > winner.result.cSpeed)) ) { winner.params = params; winner.result = candidate; BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize); } } while (BMK_GetMilliSpan(milliStart) < g_grillDuration); } /* end summary */ BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize); DISPLAY("grillParams size - optimizer completed \n"); /* clean up*/ ZSTD_freeCCtx(ctx); } return 0; } static int usage(char* exename) { DISPLAY( "Usage :\n"); DISPLAY( " %s [arg] file\n", exename); DISPLAY( "Arguments :\n"); DISPLAY( " file : path to the file used as reference (if none, generates a compressible sample)\n"); DISPLAY( " -H/-h : Help (this text + advanced options)\n"); return 0; } static int usage_advanced(void) { DISPLAY( "\nAdvanced options :\n"); DISPLAY( " -i# : iteration loops [1-9](default : %i)\n", NBLOOPS); DISPLAY( " -B# : cut input into blocks of size # (default : single block)\n"); DISPLAY( " -P# : generated sample compressibility (default : %.1f%%)\n", COMPRESSIBILITY_DEFAULT * 100); DISPLAY( " -S : Single run\n"); return 0; } static int badusage(char* exename) { DISPLAY("Wrong parameters\n"); usage(exename); return 1; } int main(int argc, char** argv) { int i, filenamesStart=0, result; char* exename=argv[0]; char* input_filename=0; U32 optimizer = 0; U32 main_pause = 0; /* checks */ if (NB_LEVELS_TRACKED <= ZSTD_maxCLevel()) { DISPLAY("Error : NB_LEVELS_TRACKED <= ZSTD_maxCLevel() \n"); exit(1); } /* Welcome message */ DISPLAY(WELCOME_MESSAGE); if (argc<1) { badusage(exename); return 1; } for(i=1; i='0') && (argument[0] <='9')) g_nbIterations = *argument++ - '0'; break; /* Sample compressibility (when no file provided) */ case 'P': argument++; { U32 proba32 = 0; while ((argument[0]>= '0') && (argument[0]<= '9')) { proba32 *= 10; proba32 += argument[0] - '0'; argument++; } g_compressibility = (double)proba32 / 100.; } break; case 'O': argument++; optimizer=1; break; /* Run Single conf */ case 'S': g_singleRun = 1; argument++; g_params = ZSTD_getParams(2, g_blockSize); for ( ; ; ) { switch(*argument) { case 'w': g_params.windowLog = 0; argument++; while ((*argument>= '0') && (*argument<='9')) g_params.windowLog *= 10, g_params.windowLog += *argument++ - '0'; continue; case 'c': g_params.contentLog = 0; argument++; while ((*argument>= '0') && (*argument<='9')) g_params.contentLog *= 10, g_params.contentLog += *argument++ - '0'; continue; case 'h': g_params.hashLog = 0; argument++; while ((*argument>= '0') && (*argument<='9')) g_params.hashLog *= 10, g_params.hashLog += *argument++ - '0'; continue; case 's': g_params.searchLog = 0; argument++; while ((*argument>= '0') && (*argument<='9')) g_params.searchLog *= 10, g_params.searchLog += *argument++ - '0'; continue; case 'l': /* search length */ g_params.searchLength = 0; argument++; while ((*argument>= '0') && (*argument<='9')) g_params.searchLength *= 10, g_params.searchLength += *argument++ - '0'; continue; case 't': /* target length */ g_params.targetLength = 0; argument++; while ((*argument>= '0') && (*argument<='9')) g_params.targetLength *= 10, g_params.targetLength += *argument++ - '0'; continue; case 'S': /* strategy */ argument++; while ((*argument>= '0') && (*argument<='9')) g_params.strategy = (ZSTD_strategy)(*argument++ - '0'); continue; case 'L': { int cLevel = 0; argument++; while ((*argument>= '0') && (*argument<='9')) cLevel *= 10, cLevel += *argument++ - '0'; g_params = ZSTD_getParams(cLevel, g_blockSize); continue; } default : ; } break; } break; /* target level1 speed objective, in MB/s */ case 'T': argument++; g_target = 0; while ((*argument >= '0') && (*argument <= '9')) { g_target *= 10; g_target += *argument - '0'; argument++; } break; /* cut input into blocks */ case 'B': { g_blockSize = 0; argument++; while ((*argument >='0') && (*argument <='9')) g_blockSize *= 10, g_blockSize += *argument++ - '0'; if (*argument=='K') g_blockSize<<=10, argument++; /* allows using KB notation */ if (*argument=='M') g_blockSize<<=20, argument++; if (*argument=='B') argument++; DISPLAY("using %u KB block size \n", g_blockSize>>10); } break; /* Unknown command */ default : return badusage(exename); } } continue; } /* first provided filename is input */ if (!input_filename) { input_filename=argument; filenamesStart=i; continue; } } if (filenamesStart==0) result = benchSample(); else { if (optimizer) result = optimizeForSize(input_filename); else result = benchFiles(argv+filenamesStart, argc-filenamesStart); } if (main_pause) { int unused; printf("press enter...\n"); unused = getchar(); (void)unused; } return result; }