diff options
Diffstat (limited to 'ext/lz4/bench.c')
| -rw-r--r-- | ext/lz4/bench.c | 477 |
1 files changed, 0 insertions, 477 deletions
diff --git a/ext/lz4/bench.c b/ext/lz4/bench.c deleted file mode 100644 index d1858116..00000000 --- a/ext/lz4/bench.c +++ /dev/null @@ -1,477 +0,0 @@ -/*
- bench.c - Demo program to benchmark open-source compression algorithm
- Copyright (C) Yann Collet 2012
- 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)
-# define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
-# define BMK_LEGACY_TIMER 1
-#endif
-
-// GCC does not support _rotl outside of Windows
-#if !defined(_WIN32)
-# define _rotl(x,r) ((x << r) | (x >> (32 - r)))
-#endif
-
-
-//**************************************
-// Includes
-//**************************************
-#include <stdlib.h> // malloc
-#include <stdio.h> // fprintf, fopen, ftello64
-#include <sys/types.h> // stat64
-#include <sys/stat.h> // stat64
-
-// 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"
-#define COMPRESSOR0 LZ4_compress
-#include "lz4hc.h"
-#define COMPRESSOR1 LZ4_compressHC
-#define DEFAULTCOMPRESSOR LZ4_compress
-
-
-
-//**************************************
-// Basic Types
-//**************************************
-#if defined(_MSC_VER) // Visual Studio does not support 'stdint' natively
-#define BYTE unsigned __int8
-#define U16 unsigned __int16
-#define U32 unsigned __int32
-#define S32 __int32
-#define U64 unsigned __int64
-#else
-#include <stdint.h>
-#define BYTE uint8_t
-#define U16 uint16_t
-#define U32 uint32_t
-#define S32 int32_t
-#define U64 uint64_t
-#endif
-
-
-//**************************************
-// Constants
-//**************************************
-#define NBLOOPS 3
-#define TIMELOOP 2000
-
-#define KNUTH 2654435761U
-#define MAX_MEM (1984<<20)
-#define DEFAULT_CHUNKSIZE (8<<20)
-
-
-//**************************************
-// Local structures
-//**************************************
-struct chunkParameters
-{
- U32 id;
- char* inputBuffer;
- char* outputBuffer;
- int inputSize;
- int outputSize;
-};
-
-struct compressionParameters
-{
- int (*compressionFunction)(const char*, char*, int);
- int (*decompressionFunction)(const char*, char*, int);
-};
-
-
-//**************************************
-// MACRO
-//**************************************
-#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
-
-
-
-//**************************************
-// Benchmark Parameters
-//**************************************
-static int chunkSize = DEFAULT_CHUNKSIZE;
-static int nbIterations = NBLOOPS;
-static int BMK_pause = 0;
-
-void BMK_SetBlocksize(int bsize)
-{
- chunkSize = bsize;
- DISPLAY("-Using Block Size of %i KB-", chunkSize>>10);
-}
-
-void BMK_SetNbIterations(int nbLoops)
-{
- nbIterations = nbLoops;
- DISPLAY("- %i iterations-", nbIterations);
-}
-
-void BMK_SetPause()
-{
- BMK_pause = 1;
-}
-
-//*********************************************************
-// Private functions
-//*********************************************************
-
-#if defined(BMK_LEGACY_TIMER)
-
-static int BMK_GetMilliStart()
-{
- // 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()
-{
- // 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 U32 BMK_checksum_MMH3A (char* buff, U32 length)
-{
- const BYTE* data = (const BYTE*)buff;
- const int nblocks = length >> 2;
-
- U32 h1 = KNUTH;
- U32 c1 = 0xcc9e2d51;
- U32 c2 = 0x1b873593;
-
- const U32* blocks = (const U32*)(data + nblocks*4);
- int i;
-
- for(i = -nblocks; i; i++)
- {
- U32 k1 = blocks[i];
-
- k1 *= c1;
- k1 = _rotl(k1,15);
- k1 *= c2;
-
- h1 ^= k1;
- h1 = _rotl(h1,13);
- h1 = h1*5+0xe6546b64;
- }
-
- {
- const BYTE* tail = (const BYTE*)(data + nblocks*4);
- U32 k1 = 0;
-
- switch(length & 3)
- {
- case 3: k1 ^= tail[2] << 16;
- case 2: k1 ^= tail[1] << 8;
- case 1: k1 ^= tail[0];
- k1 *= c1; k1 = _rotl(k1,15); k1 *= c2; h1 ^= k1;
- };
- }
-
- h1 ^= length;
- h1 ^= h1 >> 16;
- h1 *= 0x85ebca6b;
- h1 ^= h1 >> 13;
- h1 *= 0xc2b2ae35;
- h1 ^= h1 >> 16;
-
- return h1;
-}
-
-
-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 = 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;
-}
-
-
-//*********************************************************
-// Public function
-//*********************************************************
-
-int BMK_benchFile(char** fileNamesTable, int nbFiles, int cLevel)
-{
- int fileIdx=0;
- FILE* fileIn;
- char* infilename;
- U64 largefilesize;
- size_t benchedsize;
- int nbChunks;
- int maxCChunkSize;
- size_t readSize;
- char* in_buff;
- char* out_buff; int out_buff_size;
- struct chunkParameters* chunkP;
- U32 crcc, crcd=0;
- struct compressionParameters compP;
-
- U64 totals = 0;
- U64 totalz = 0;
- double totalc = 0.;
- double totald = 0.;
-
-
- // Init
- switch (cLevel)
- {
-#ifdef COMPRESSOR0
- case 0 : compP.compressionFunction = COMPRESSOR0; break;
-#endif
-#ifdef COMPRESSOR1
- case 1 : compP.compressionFunction = COMPRESSOR1; break;
-#endif
- default : compP.compressionFunction = DEFAULTCOMPRESSOR;
- }
- compP.decompressionFunction = LZ4_uncompress;
-
- // Loop for each file
- while (fileIdx<nbFiles)
- {
- // Check file existence
- infilename = fileNamesTable[fileIdx++];
- fileIn = fopen( infilename, "rb" );
- if (fileIn==NULL)
- {
- DISPLAY( "Pb opening %s\n", infilename);
- return 11;
- }
-
- // Memory allocation & restrictions
- largefilesize = BMK_GetFileSize(infilename);
- benchedsize = (size_t) BMK_findMaxMem(largefilesize) / 2;
- if ((U64)benchedsize > largefilesize) benchedsize = (size_t)largefilesize;
- if (benchedsize < largefilesize)
- {
- DISPLAY("Not enough memory for '%s' full size; testing %i MB only...\n", infilename, (int)(benchedsize>>20));
- }
-
- // Alloc
- chunkP = (struct chunkParameters*) malloc(((benchedsize / chunkSize)+1) * sizeof(struct chunkParameters));
- in_buff = malloc((size_t )benchedsize);
- nbChunks = (int) (benchedsize / chunkSize) + 1;
- maxCChunkSize = LZ4_compressBound(chunkSize);
- out_buff_size = nbChunks * maxCChunkSize;
- out_buff = malloc((size_t )out_buff_size);
-
-
- if(!in_buff || !out_buff)
- {
- DISPLAY("\nError: not enough memory!\n");
- free(in_buff);
- free(out_buff);
- fclose(fileIn);
- return 12;
- }
-
- // Init chunks data
- {
- int i;
- size_t remaining = benchedsize;
- char* in = in_buff;
- char* out = out_buff;
- for (i=0; i<nbChunks; i++)
- {
- chunkP[i].id = i;
- chunkP[i].inputBuffer = in; in += chunkSize;
- if ((int)remaining > chunkSize) { chunkP[i].inputSize = chunkSize; remaining -= chunkSize; } else { chunkP[i].inputSize = (int)remaining; remaining = 0; }
- chunkP[i].outputBuffer = out; out += maxCChunkSize;
- chunkP[i].outputSize = 0;
- }
- }
-
- // Fill input buffer
- DISPLAY("Loading %s... \r", infilename);
- readSize = fread(in_buff, 1, benchedsize, fileIn);
- fclose(fileIn);
-
- if(readSize != benchedsize)
- {
- DISPLAY("\nError: problem reading file '%s' !! \n", infilename);
- free(in_buff);
- free(out_buff);
- return 13;
- }
-
- // Calculating input Checksum
- crcc = BMK_checksum_MMH3A(in_buff, (unsigned int)benchedsize);
-
-
- // Bench
- {
- int loopNb, nb_loops, chunkNb;
- size_t cSize=0;
- int milliTime;
- double fastestC = 100000000., fastestD = 100000000.;
- double ratio=0.;
-
- DISPLAY("\r%79s\r", "");
- for (loopNb = 1; loopNb <= nbIterations; loopNb++)
- {
- // Compression
- DISPLAY("%1i-%-14.14s : %9i ->\r", loopNb, infilename, (int)benchedsize);
- { size_t i; for (i=0; i<benchedsize; i++) out_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)
- {
- for (chunkNb=0; chunkNb<nbChunks; chunkNb++)
- chunkP[chunkNb].outputSize = compP.compressionFunction(chunkP[chunkNb].inputBuffer, chunkP[chunkNb].outputBuffer, chunkP[chunkNb].inputSize);
- nb_loops++;
- }
- milliTime = BMK_GetMilliSpan(milliTime);
-
- if ((double)milliTime < fastestC*nb_loops) fastestC = (double)milliTime/nb_loops;
- cSize=0; for (chunkNb=0; chunkNb<nbChunks; chunkNb++) cSize += chunkP[chunkNb].outputSize;
- ratio = (double)cSize/(double)benchedsize*100.;
-
- DISPLAY("%1i-%-14.14s : %9i -> %9i (%5.2f%%),%7.1f MB/s\r", loopNb, infilename, (int)benchedsize, (int)cSize, ratio, (double)benchedsize / fastestC / 1000.);
-
- // Decompression
- { size_t i; for (i=0; i<benchedsize; i++) in_buff[i]=0; } // zeroing area, for CRC checking
-
- nb_loops = 0;
- milliTime = BMK_GetMilliStart();
- while(BMK_GetMilliStart() == milliTime);
- milliTime = BMK_GetMilliStart();
- while(BMK_GetMilliSpan(milliTime) < TIMELOOP)
- {
- for (chunkNb=0; chunkNb<nbChunks; chunkNb++)
- chunkP[chunkNb].outputSize = LZ4_uncompress(chunkP[chunkNb].outputBuffer, chunkP[chunkNb].inputBuffer, chunkP[chunkNb].inputSize);
- //chunkP[chunkNb].inputSize = LZ4_uncompress_unknownOutputSize(chunkP[chunkNb].outputBuffer, chunkP[chunkNb].inputBuffer, chunkP[chunkNb].outputSize, chunkSize);
- nb_loops++;
- }
- milliTime = BMK_GetMilliSpan(milliTime);
-
- if ((double)milliTime < fastestD*nb_loops) fastestD = (double)milliTime/nb_loops;
- DISPLAY("%1i-%-14.14s : %9i -> %9i (%5.2f%%),%7.1f MB/s ,%7.1f MB/s\r", loopNb, infilename, (int)benchedsize, (int)cSize, ratio, (double)benchedsize / fastestC / 1000., (double)benchedsize / fastestD / 1000.);
-
- // CRC Checking
- crcd = BMK_checksum_MMH3A(in_buff, (unsigned int)benchedsize);
- if (crcc!=crcd) { DISPLAY("\n!!! WARNING !!! %14s : Invalid Checksum : %x != %x\n", infilename, (unsigned)crcc, (unsigned)crcd); break; }
- }
-
- if (crcc==crcd)
- {
- if (ratio<100.)
- DISPLAY("%-16.16s : %9i -> %9i (%5.2f%%),%7.1f MB/s ,%7.1f MB/s\n", infilename, (int)benchedsize, (int)cSize, ratio, (double)benchedsize / fastestC / 1000., (double)benchedsize / fastestD / 1000.);
- else
- DISPLAY("%-16.16s : %9i -> %9i (%5.1f%%),%7.1f MB/s ,%7.1f MB/s \n", infilename, (int)benchedsize, (int)cSize, ratio, (double)benchedsize / fastestC / 1000., (double)benchedsize / fastestD / 1000.);
- }
- totals += benchedsize;
- totalz += cSize;
- totalc += fastestC;
- totald += fastestD;
- }
-
- free(in_buff);
- free(out_buff);
- free(chunkP);
- }
-
- if (nbFiles > 1)
- printf("%-16.16s :%10llu ->%10llu (%5.2f%%), %6.1f MB/s , %6.1f MB/s\n", " TOTAL", (long long unsigned int)totals, (long long unsigned int)totalz, (double)totalz/(double)totals*100., (double)totals/totalc/1000., (double)totals/totald/1000.);
-
- if (BMK_pause) { printf("press enter...\n"); getchar(); }
-
- return 0;
-}
-
-
-
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