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lz4/programs/fullbench.c

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/*
bench.c - Demo program to benchmark open-source compression algorithm
Copyright (C) Yann Collet 2012-2014
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 :
- LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
- LZ4 source repository : http://code.google.com/p/lz4/
*/
//**************************************
// 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
//**************************************
// Includes
//**************************************
#include <stdlib.h> // malloc
#include <stdio.h> // fprintf, fopen, ftello64
#include <sys/types.h> // stat64
#include <sys/stat.h> // stat64
#include <string.h> // strcmp
// Use ftime() if gettimeofday() is not available on your target
#if defined(BMK_LEGACY_TIMER)
# include <sys/timeb.h> // timeb, ftime
#else
# include <sys/time.h> // gettimeofday
#endif
#include "lz4.h"
#include "lz4hc.h"
#include "lz4frame.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
// GCC does not support _rotl outside of Windows
#if !defined(_WIN32)
# define _rotl(x,r) ((x << r) | (x >> (32 - r)))
#endif
//**************************************
// Basic Types
//**************************************
#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L // C99
# include <stdint.h>
typedef uint8_t BYTE;
typedef uint16_t U16;
typedef uint32_t U32;
typedef int32_t S32;
typedef uint64_t U64;
#else
typedef unsigned char BYTE;
typedef unsigned short U16;
typedef unsigned int U32;
typedef signed int S32;
typedef unsigned long long U64;
#endif
//****************************
// Constants
//****************************
#define PROGRAM_DESCRIPTION "LZ4 speed analyzer"
#ifndef LZ4_VERSION
# define LZ4_VERSION ""
#endif
#define AUTHOR "Yann Collet"
#define WELCOME_MESSAGE "*** %s %s %i-bits, by %s (%s) ***\n", PROGRAM_DESCRIPTION, LZ4_VERSION, (int)(sizeof(void*)*8), AUTHOR, __DATE__
#define NBLOOPS 6
#define TIMELOOP 2500
#define KNUTH 2654435761U
#define MAX_MEM (1984<<20)
#define DEFAULT_CHUNKSIZE (4<<20)
#define ALL_COMPRESSORS 0
#define ALL_DECOMPRESSORS 0
//**************************************
// Local structures
//**************************************
struct chunkParameters
{
U32 id;
char* origBuffer;
char* compressedBuffer;
int origSize;
int compressedSize;
};
//**************************************
// MACRO
//**************************************
#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
#define PROGRESS(...) no_prompt ? 0 : DISPLAY(__VA_ARGS__)
//**************************************
// Benchmark Parameters
//**************************************
static int chunkSize = DEFAULT_CHUNKSIZE;
static int nbIterations = NBLOOPS;
static int BMK_pause = 0;
static int compressionTest = 1;
static int decompressionTest = 1;
static int compressionAlgo = ALL_COMPRESSORS;
static int decompressionAlgo = ALL_DECOMPRESSORS;
static int no_prompt = 0;
void BMK_SetBlocksize(int bsize)
{
chunkSize = bsize;
DISPLAY("-Using Block Size of %i KB-\n", chunkSize>>10);
}
void BMK_SetNbIterations(int nbLoops)
{
nbIterations = nbLoops;
DISPLAY("- %i iterations -\n", nbIterations);
}
void BMK_SetPause(void)
{
BMK_pause = 1;
}
//*********************************************************
// 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 = (64U<<20); // 64 MB
BYTE* testmem=NULL;
requiredMem = (((requiredMem >> 25) + 1) << 26);
if (requiredMem > MAX_MEM) requiredMem = MAX_MEM;
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;
}
/*********************************************************
Benchmark function
*********************************************************/
static int local_LZ4_compress_limitedOutput(const char* in, char* out, int inSize)
{
return LZ4_compress_limitedOutput(in, out, inSize, LZ4_compressBound(inSize));
}
static void* stateLZ4;
static int local_LZ4_compress_withState(const char* in, char* out, int inSize)
{
return LZ4_compress_withState(stateLZ4, in, out, inSize);
}
static int local_LZ4_compress_limitedOutput_withState(const char* in, char* out, int inSize)
{
return LZ4_compress_limitedOutput_withState(stateLZ4, in, out, inSize, LZ4_compressBound(inSize));
}
static void* ctx;
static int local_LZ4_compress_continue(const char* in, char* out, int inSize)
{
return LZ4_compress_continue(ctx, in, out, inSize);
}
static int local_LZ4_compress_limitedOutput_continue(const char* in, char* out, int inSize)
{
return LZ4_compress_limitedOutput_continue(ctx, in, out, inSize, LZ4_compressBound(inSize));
}
LZ4_stream_t LZ4_dict;
static void* local_LZ4_resetDictT(const char* fake)
{
(void)fake;
memset(&LZ4_dict, 0, sizeof(LZ4_stream_t));
return NULL;
}
int LZ4_compress_forceExtDict (LZ4_stream_t* LZ4_dict, const char* source, char* dest, int inputSize);
static int local_LZ4_compress_forceDict(const char* in, char* out, int inSize)
{
return LZ4_compress_forceExtDict(&LZ4_dict, in, out, inSize);
}
static void* stateLZ4HC;
static int local_LZ4_compressHC_withStateHC(const char* in, char* out, int inSize)
{
return LZ4_compressHC_withStateHC(stateLZ4HC, in, out, inSize);
}
static int local_LZ4_compressHC_limitedOutput_withStateHC(const char* in, char* out, int inSize)
{
return LZ4_compressHC_limitedOutput_withStateHC(stateLZ4HC, in, out, inSize, LZ4_compressBound(inSize));
}
static int local_LZ4_compressHC_limitedOutput(const char* in, char* out, int inSize)
{
return LZ4_compressHC_limitedOutput(in, out, inSize, LZ4_compressBound(inSize));
}
static int local_LZ4_compressHC_continue(const char* in, char* out, int inSize)
{
return LZ4_compressHC_continue(ctx, in, out, inSize);
}
static int local_LZ4_compressHC_limitedOutput_continue(const char* in, char* out, int inSize)
{
return LZ4_compressHC_limitedOutput_continue(ctx, in, out, inSize, LZ4_compressBound(inSize));
}
static int local_LZ4F_compressFrame(const char* in, char* out, int inSize)
{
return LZ4F_compressFrame(out, 2*inSize + 16, in, inSize, NULL);
}
static int local_LZ4_decompress_fast(const char* in, char* out, int inSize, int outSize)
{
(void)inSize;
LZ4_decompress_fast(in, out, outSize);
return outSize;
}
static int local_LZ4_decompress_fast_withPrefix64k(const char* in, char* out, int inSize, int outSize)
{
(void)inSize;
LZ4_decompress_fast_withPrefix64k(in, out, outSize);
return outSize;
}
static int local_LZ4_decompress_fast_usingDict(const char* in, char* out, int inSize, int outSize)
{
(void)inSize;
LZ4_decompress_fast_usingDict(in, out, outSize, in - 65536, 65536);
return outSize;
}
static int local_LZ4_decompress_safe_usingDict(const char* in, char* out, int inSize, int outSize)
{
(void)inSize;
LZ4_decompress_safe_usingDict(in, out, inSize, outSize, in - 65536, 65536);
return outSize;
}
static int local_LZ4_decompress_safe_partial(const char* in, char* out, int inSize, int outSize)
{
return LZ4_decompress_safe_partial(in, out, inSize, outSize - 5, outSize);
}
static LZ4F_decompressionContext_t g_dCtx;
static int local_LZ4F_decompress(const char* in, char* out, int inSize, int outSize)
{
size_t srcSize = inSize;
size_t dstSize = outSize;
size_t result;
result = LZ4F_decompress(g_dCtx, out, &dstSize, in, &srcSize, NULL);
if (result!=0) { DISPLAY("Error decompressing frame : unfinished frame\n"); exit(8); }
if (srcSize != (size_t)inSize) { DISPLAY("Error decompressing frame : read size incorrect\n"); exit(9); }
return dstSize;
}
int fullSpeedBench(char** fileNamesTable, int nbFiles)
{
int fileIdx=0;
char* orig_buff;
# define NB_COMPRESSION_ALGORITHMS 14
double totalCTime[NB_COMPRESSION_ALGORITHMS+1] = {0};
double totalCSize[NB_COMPRESSION_ALGORITHMS+1] = {0};
# define NB_DECOMPRESSION_ALGORITHMS 8
double totalDTime[NB_DECOMPRESSION_ALGORITHMS+1] = {0};
size_t errorCode;
errorCode = LZ4F_createDecompressionContext(&g_dCtx, LZ4F_VERSION);
if (LZ4F_isError(errorCode))
{
DISPLAY("dctx allocation issue \n");
return 10;
}
// Loop for each file
while (fileIdx<nbFiles)
{
FILE* inFile;
char* inFileName;
U64 inFileSize;
size_t benchedSize;
int nbChunks;
int maxCompressedChunkSize;
struct chunkParameters* chunkP;
size_t readSize;
char* compressed_buff; int compressedBuffSize;
U32 crcOriginal;
// Init
stateLZ4 = malloc(LZ4_sizeofState());
stateLZ4HC = malloc(LZ4_sizeofStateHC());
// Check file existence
inFileName = fileNamesTable[fileIdx++];
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) / 2;
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
chunkP = (struct chunkParameters*) malloc(((benchedSize / (size_t)chunkSize)+1) * sizeof(struct chunkParameters));
orig_buff = (char*) malloc((size_t)benchedSize);
nbChunks = (int) ((int)benchedSize / chunkSize) + 1;
maxCompressedChunkSize = LZ4_compressBound(chunkSize);
compressedBuffSize = nbChunks * maxCompressedChunkSize;
compressed_buff = (char*)malloc((size_t)compressedBuffSize);
if(!orig_buff || !compressed_buff)
{
DISPLAY("\nError: not enough memory!\n");
free(orig_buff);
free(compressed_buff);
free(chunkP);
fclose(inFile);
return 12;
}
// Fill input buffer
DISPLAY("Loading %s... \r", inFileName);
readSize = fread(orig_buff, 1, benchedSize, inFile);
fclose(inFile);
if(readSize != benchedSize)
{
DISPLAY("\nError: problem reading file '%s' !! \n", inFileName);
free(orig_buff);
free(compressed_buff);
free(chunkP);
return 13;
}
// Calculating input Checksum
crcOriginal = XXH32(orig_buff, (unsigned int)benchedSize,0);
// Bench
{
int loopNb, nb_loops, chunkNb, cAlgNb, dAlgNb;
size_t cSize=0;
double ratio=0.;
DISPLAY("\r%79s\r", "");
DISPLAY(" %s : \n", inFileName);
// Init chunks data
{
int i;
size_t remaining = benchedSize;
char* in = orig_buff;
char* out = compressed_buff;
nbChunks = (int) ((int)benchedSize / chunkSize) + 1;
for (i=0; i<nbChunks; i++)
{
chunkP[i].id = i;
chunkP[i].origBuffer = in; in += chunkSize;
if ((int)remaining > chunkSize) { chunkP[i].origSize = chunkSize; remaining -= chunkSize; } else { chunkP[i].origSize = (int)remaining; remaining = 0; }
chunkP[i].compressedBuffer = out; out += maxCompressedChunkSize;
chunkP[i].compressedSize = 0;
}
}
// Compression Algorithms
for (cAlgNb=1; (cAlgNb <= NB_COMPRESSION_ALGORITHMS) && (compressionTest); cAlgNb++)
{
const char* compressorName;
int (*compressionFunction)(const char*, char*, int);
void* (*initFunction)(const char*) = NULL;
double bestTime = 100000000.;
if ((compressionAlgo != ALL_COMPRESSORS) && (compressionAlgo != cAlgNb)) continue;
switch(cAlgNb)
{
case 1 : compressionFunction = LZ4_compress; compressorName = "LZ4_compress"; break;
case 2 : compressionFunction = local_LZ4_compress_limitedOutput; compressorName = "LZ4_compress_limitedOutput"; break;
case 3 : compressionFunction = local_LZ4_compress_withState; compressorName = "LZ4_compress_withState"; break;
case 4 : compressionFunction = local_LZ4_compress_limitedOutput_withState; compressorName = "LZ4_compress_limitedOutput_withState"; break;
case 5 : compressionFunction = local_LZ4_compress_continue; initFunction = LZ4_create; compressorName = "LZ4_compress_continue"; break;
case 6 : compressionFunction = local_LZ4_compress_limitedOutput_continue; initFunction = LZ4_create; compressorName = "LZ4_compress_limitedOutput_continue"; break;
case 7 : compressionFunction = LZ4_compressHC; compressorName = "LZ4_compressHC"; break;
case 8 : compressionFunction = local_LZ4_compressHC_limitedOutput; compressorName = "LZ4_compressHC_limitedOutput"; break;
case 9 : compressionFunction = local_LZ4_compressHC_withStateHC; compressorName = "LZ4_compressHC_withStateHC"; break;
case 10: compressionFunction = local_LZ4_compressHC_limitedOutput_withStateHC; compressorName = "LZ4_compressHC_limitedOutput_withStateHC"; break;
case 11: compressionFunction = local_LZ4_compressHC_continue; initFunction = LZ4_createHC; compressorName = "LZ4_compressHC_continue"; break;
case 12: compressionFunction = local_LZ4_compressHC_limitedOutput_continue; initFunction = LZ4_createHC; compressorName = "LZ4_compressHC_limitedOutput_continue"; break;
case 13: compressionFunction = local_LZ4_compress_forceDict; initFunction = local_LZ4_resetDictT; compressorName = "LZ4_compress_forceDict"; break;
case 14: compressionFunction = local_LZ4F_compressFrame; compressorName = "LZ4F_compressFrame";
chunkP[0].origSize = benchedSize; nbChunks=1;
break;
default : DISPLAY("ERROR ! Bad algorithm Id !! \n"); free(chunkP); return 1;
}
for (loopNb = 1; loopNb <= nbIterations; loopNb++)
{
double averageTime;
int milliTime;
PROGRESS("%1i-%-26.26s : %9i ->\r", loopNb, compressorName, (int)benchedSize);
{ size_t i; for (i=0; i<benchedSize; i++) compressed_buff[i]=(char)i; } // warmimg up memory
nb_loops = 0;
milliTime = BMK_GetMilliStart();
while(BMK_GetMilliStart() == milliTime);
milliTime = BMK_GetMilliStart();
while(BMK_GetMilliSpan(milliTime) < TIMELOOP)
{
if (initFunction!=NULL) ctx = initFunction(chunkP[0].origBuffer);
for (chunkNb=0; chunkNb<nbChunks; chunkNb++)
{
chunkP[chunkNb].compressedSize = compressionFunction(chunkP[chunkNb].origBuffer, chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origSize);
if (chunkP[chunkNb].compressedSize==0) DISPLAY("ERROR ! %s() = 0 !! \n", compressorName), exit(1);
}
if (initFunction!=NULL) free(ctx);
nb_loops++;
}
milliTime = BMK_GetMilliSpan(milliTime);
averageTime = (double)milliTime / nb_loops;
if (averageTime < bestTime) bestTime = averageTime;
cSize=0; for (chunkNb=0; chunkNb<nbChunks; chunkNb++) cSize += chunkP[chunkNb].compressedSize;
ratio = (double)cSize/(double)benchedSize*100.;
PROGRESS("%1i-%-26.26s : %9i -> %9i (%5.2f%%),%7.1f MB/s\r", loopNb, compressorName, (int)benchedSize, (int)cSize, ratio, (double)benchedSize / bestTime / 1000.);
}
if (ratio<100.)
DISPLAY("%-28.28s : %9i -> %9i (%5.2f%%),%7.1f MB/s\n", compressorName, (int)benchedSize, (int)cSize, ratio, (double)benchedSize / bestTime / 1000.);
else
DISPLAY("%-28.28s : %9i -> %9i (%5.1f%%),%7.1f MB/s\n", compressorName, (int)benchedSize, (int)cSize, ratio, (double)benchedSize / bestTime / 1000.);
totalCTime[cAlgNb] += bestTime;
totalCSize[cAlgNb] += cSize;
}
// Prepare layout for decompression
for (chunkNb=0; chunkNb<nbChunks; chunkNb++)
{
chunkP[chunkNb].compressedSize = LZ4_compress(chunkP[chunkNb].origBuffer, chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origSize);
if (chunkP[chunkNb].compressedSize==0) DISPLAY("ERROR ! %s() = 0 !! \n", "LZ4_compress"), exit(1);
}
// Decompression Algorithms
for (dAlgNb=1; (dAlgNb <= NB_DECOMPRESSION_ALGORITHMS) && (decompressionTest); dAlgNb++)
{
//const char* dName = decompressionNames[dAlgNb];
const char* dName;
int (*decompressionFunction)(const char*, char*, int, int);
double bestTime = 100000000.;
if ((decompressionAlgo != ALL_DECOMPRESSORS) && (decompressionAlgo != dAlgNb)) continue;
switch(dAlgNb)
{
case 1: decompressionFunction = local_LZ4_decompress_fast; dName = "LZ4_decompress_fast"; break;
case 2: decompressionFunction = local_LZ4_decompress_fast_withPrefix64k; dName = "LZ4_decompress_fast_withPrefix64k"; break;
case 3: decompressionFunction = local_LZ4_decompress_fast_usingDict; dName = "LZ4_decompress_fast_usingDict"; break;
case 4: decompressionFunction = LZ4_decompress_safe; dName = "LZ4_decompress_safe"; break;
case 5: decompressionFunction = LZ4_decompress_safe_withPrefix64k; dName = "LZ4_decompress_safe_withPrefix64k"; break;
case 6: decompressionFunction = local_LZ4_decompress_safe_usingDict; dName = "LZ4_decompress_safe_usingDict"; break;
case 7: decompressionFunction = local_LZ4_decompress_safe_partial; dName = "LZ4_decompress_safe_partial"; break;
case 8: decompressionFunction = local_LZ4F_decompress; dName = "LZ4F_decompress";
errorCode = LZ4F_compressFrame(compressed_buff, compressedBuffSize, orig_buff, benchedSize, NULL);
if (LZ4F_isError(errorCode)) { DISPLAY("Preparation error compressing frame\n"); return 1; }
chunkP[0].origSize = benchedSize;
chunkP[0].compressedSize = errorCode;
nbChunks = 1;
break;
default : DISPLAY("ERROR ! Bad decompression algorithm Id !! \n"); free(chunkP); return 1;
}
{ size_t i; for (i=0; i<benchedSize; i++) orig_buff[i]=0; } // zeroing source area, for CRC checking
for (loopNb = 1; loopNb <= nbIterations; loopNb++)
{
double averageTime;
int milliTime;
U32 crcDecoded;
PROGRESS("%1i-%-29.29s :%10i ->\r", loopNb, dName, (int)benchedSize);
nb_loops = 0;
milliTime = BMK_GetMilliStart();
while(BMK_GetMilliStart() == milliTime);
milliTime = BMK_GetMilliStart();
while(BMK_GetMilliSpan(milliTime) < TIMELOOP)
{
for (chunkNb=0; chunkNb<nbChunks; chunkNb++)
{
int decodedSize = decompressionFunction(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].compressedSize, chunkP[chunkNb].origSize);
if (chunkP[chunkNb].origSize != decodedSize) DISPLAY("ERROR ! %s() == %i != %i !! \n", dName, decodedSize, chunkP[chunkNb].origSize), exit(1);
}
nb_loops++;
}
milliTime = BMK_GetMilliSpan(milliTime);
averageTime = (double)milliTime / nb_loops;
if (averageTime < bestTime) bestTime = averageTime;
PROGRESS("%1i-%-29.29s :%10i -> %7.1f MB/s\r", loopNb, dName, (int)benchedSize, (double)benchedSize / bestTime / 1000.);
// CRC Checking
crcDecoded = XXH32(orig_buff, (int)benchedSize, 0);
if (crcOriginal!=crcDecoded) { DISPLAY("\n!!! WARNING !!! %14s : Invalid Checksum : %x != %x\n", inFileName, (unsigned)crcOriginal, (unsigned)crcDecoded); exit(1); }
}
DISPLAY("%-31.31s :%10i -> %7.1f MB/s\n", dName, (int)benchedSize, (double)benchedSize / bestTime / 1000.);
totalDTime[dAlgNb] += bestTime;
}
}
free(orig_buff);
free(compressed_buff);
free(chunkP);
}
if (BMK_pause) { printf("press enter...\n"); getchar(); }
return 0;
}
int usage(char* exename)
{
DISPLAY( "Usage :\n");
DISPLAY( " %s [arg] file1 file2 ... fileX\n", exename);
DISPLAY( "Arguments :\n");
DISPLAY( " -c : compression tests only\n");
DISPLAY( " -d : decompression tests only\n");
DISPLAY( " -H/-h : Help (this text + advanced options)\n");
return 0;
}
int usage_advanced(void)
{
DISPLAY( "\nAdvanced options :\n");
DISPLAY( " -c# : test only compression function # [1-%i]\n", NB_COMPRESSION_ALGORITHMS);
DISPLAY( " -d# : test only decompression function # [1-%i]\n", NB_DECOMPRESSION_ALGORITHMS);
DISPLAY( " -i# : iteration loops [1-9](default : %i)\n", NBLOOPS);
DISPLAY( " -B# : Block size [4-7](default : 7)\n");
//DISPLAY( " -BD : Block dependency (improve compression ratio)\n");
return 0;
}
int badusage(char* exename)
{
DISPLAY("Wrong parameters\n");
usage(exename);
return 0;
}
int main(int argc, char** argv)
{
int i,
filenamesStart=2;
char* exename=argv[0];
char* input_filename=0;
// Welcome message
DISPLAY(WELCOME_MESSAGE);
if (argc<2) { badusage(exename); return 1; }
for(i=1; i<argc; i++)
{
char* argument = argv[i];
if(!argument) continue; // Protection if argument empty
if (!strcmp(argument, "--no-prompt"))
{
no_prompt = 1;
continue;
}
// Decode command (note : aggregated commands are allowed)
if (argument[0]=='-')
{
while (argument[1]!=0)
{
argument ++;
switch(argument[0])
{
// Select compression algorithm only
case 'c':
decompressionTest = 0;
while ((argument[1]>= '0') && (argument[1]<= '9'))
{
compressionAlgo *= 10;
compressionAlgo += argument[1] - '0';
argument++;
}
break;
// Select decompression algorithm only
case 'd':
compressionTest = 0;
while ((argument[1]>= '0') && (argument[1]<= '9'))
{
decompressionAlgo *= 10;
decompressionAlgo += argument[1] - '0';
argument++;
}
break;
// Display help on usage
case 'h' :
case 'H': usage(exename); usage_advanced(); return 0;
// Modify Block Properties
case 'B':
while (argument[1]!=0)
switch(argument[1])
{
case '4':
case '5':
case '6':
case '7':
{
int B = argument[1] - '0';
int S = 1 << (8 + 2*B);
BMK_SetBlocksize(S);
argument++;
break;
}
case 'D': argument++; break;
default : goto _exit_blockProperties;
}
_exit_blockProperties:
break;
// Modify Nb Iterations
case 'i':
if ((argument[1] >='1') && (argument[1] <='9'))
{
int iters = argument[1] - '0';
BMK_SetNbIterations(iters);
argument++;
}
break;
// Pause at the end (hidden option)
case 'p': BMK_SetPause(); break;
// Unrecognised command
default : badusage(exename); return 1;
}
}
continue;
}
// first provided filename is input
if (!input_filename) { input_filename=argument; filenamesStart=i; continue; }
}
// No input filename ==> Error
if(!input_filename) { badusage(exename); return 1; }
return fullSpeedBench(argv+filenamesStart, argc-filenamesStart);
}
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