2024年1月30日发(作者：)

#include #include #include #include "zlib.h"void MyDoMinus64(LARGE_INTEGER *R,LARGE_INTEGER A,LARGE_INTEGER B){ R->HighPart = rt - rt; if (t >= t) R->LowPart = t - t; else { R->LowPart = t - t; R->HighPart --; }}#ifdef _M_X64// see /library/twchhe95(en-us,vs.80).aspx for __rdtscunsigned __int64 __rdtsc(void);void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64){ // printf("rdtsc = %I64xn",__rdtsc()); pbeginTime64->QuadPart=__rdtsc();}LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf){ LARGE_INTEGER LIres; unsigned _int64 res=__rdtsc()-((unsigned _int64)(rt)); rt=res; // printf("rdtsc = %I64xn",__rdtsc()); return LIres;}#else#ifdef _M_IX86void myGetRDTSC32(LARGE_INTEGER * pbeginTime64){ DWORD dwEdx,dwEax; _asm { rdtsc mov dwEax,eax mov dwEdx,edx } pbeginTime64->LowPart=dwEax; pbeginTime64->HighPart=dwEdx;}void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64){ myGetRDTSC32(pbeginTime64);}LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf){ LARGE_INTEGER LIres,endTime64; myGetRDTSC32(&endTime64); t=rt=0; MyDoMinus64(&LIres,endTime64,beginTime64); return LIres;}#else

void myGetRDTSC32(LARGE_INTEGER * pbeginTime64){}void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64){}LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf){ LARGE_INTEGER lr; rt=0; return lr;}#endif#endifvoid BeginCountPerfCounter(LARGE_INTEGER * pbeginTime64,BOOL fComputeTimeQueryPerf){ if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(pbeginTime64))) { pbeginTime64->LowPart = GetTickCount(); pbeginTime64->HighPart = 0; }}DWORD GetMsecSincePerfCounter(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf){ LARGE_INTEGER endTime64,ticksPerSecond,ticks; DWORDLONG ticksShifted,tickSecShifted; DWORD dwLog=16+0; DWORD dwRet; if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(&endTime64))) dwRet = (GetTickCount() - t)*1; else { MyDoMinus64(&ticks,endTime64,beginTime64); QueryPerformanceFrequency(&ticksPerSecond); { ticksShifted = Int64ShrlMod32(*(DWORDLONG*)&ticks,dwLog); tickSecShifted = Int64ShrlMod32(*(DWORDLONG*)&ticksPerSecond,dwLog); } dwRet = (DWORD)((((DWORD)ticksShifted)*1000)/(DWORD)(tickSecShifted)); dwRet *=1; } return dwRet;}int ReadFileMemory(const char* filename,long* plFileSize,unsigned char** pFilePtr){ FILE* stream; unsigned char* ptr; int retVal=1; stream=fopen(filename, "rb"); if (stream==NULL) return 0; fseek(stream,0,SEEK_END); *plFileSize=ftell(stream); fseek(stream,0,SEEK_SET);

ptr=malloc((*plFileSize)+1); if (ptr==NULL) retVal=0; else { if (fread(ptr, 1, *plFileSize,stream) != (*plFileSize)) retVal=0; } fclose(stream); *pFilePtr=ptr; return retVal;}int main(int argc, char *argv[]){ int BlockSizeCompress=256; int BlockSizeUncompress = 256;//0x8000; 注意需为256 int cprLevel=Z_DEFAULT_COMPRESSION ; long lFileSize; unsigned char* FilePtr; long lBufferSizeCpr; long lBufferSizeUncpr; long lCompressedSize=0; unsigned char* CprPtr; unsigned char* UncprPtr; long lSizeCpr,lSizeUncpr; DWORD dwGetTick,dwMsecQP; LARGE_INTEGER li_qp,li_rdtsc,dwResRdtsc; if (argc<=1) { printf("run TestZlib [BlockSizeCompress] [BlockSizeUncompress] [compres. level]n"); return 0; } if (ReadFileMemory(argv[1],&lFileSize,&FilePtr)==0) { printf("error reading %sn",argv[1]); return 1; } else printf("file %s read, %u bytesn",argv[1],lFileSize); if (argc>=3) BlockSizeCompress=atol(argv[2]); if (argc>=4) BlockSizeUncompress=atol(argv[3]); if (argc>=5) cprLevel=(int)atol(argv[4]); lBufferSizeCpr = lFileSize + (lFileSize/0x10) + 0x200; lBufferSizeUncpr = lBufferSizeCpr; CprPtr=(unsigned char*)malloc(lBufferSizeCpr + BlockSizeCompress); BeginCountPerfCounter(&li_qp,TRUE); dwGetTick=GetTickCount(); BeginCountRdtsc(&li_rdtsc); { z_stream zcpr; int ret=Z_OK; long lOrigToDo = lFileSize; long lOrigDone = 0; int step=0;

memset(&zcpr,0,sizeof(z_stream)); deflateInit(&zcpr,cprLevel); _in = FilePtr; _out = CprPtr; do { long all_read_before = _in; _in = min(lOrigToDo,BlockSizeCompress); _out = BlockSizeCompress; ret=deflate(&zcpr,(_in==lOrigToDo) ? Z_FINISH : Z_SYNC_FLUSH); lOrigDone += (_in-all_read_before); lOrigToDo -= (_in-all_read_before); step++; } while (ret==Z_OK); lSizeCpr=_out; deflateEnd(&zcpr); dwGetTick=GetTickCount()-dwGetTick; dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE); dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE); printf("total compress size = %u, in %u stepn",lSizeCpr,step); printf("time = %u msec = %f secn",dwGetTick,dwGetTick/(double)1000.); printf("defcpr time QP = %u msec = %f secn",dwMsecQP,dwMsecQP/(double)1000.); printf("defcpr result rdtsc = %I64xnn",rt); } CprPtr=(unsigned char*)realloc(CprPtr,lSizeCpr); UncprPtr=(unsigned char*)malloc(lBufferSizeUncpr + BlockSizeUncompress); BeginCountPerfCounter(&li_qp,TRUE); dwGetTick=GetTickCount(); BeginCountRdtsc(&li_rdtsc); { z_stream zcpr; int ret=Z_OK; long lOrigToDo = lSizeCpr; long lOrigDone = 0; int step=0; memset(&zcpr,0,sizeof(z_stream)); inflateInit(&zcpr); _in = CprPtr; _out = UncprPtr; do { long all_read_before = _in; _in = min(lOrigToDo,BlockSizeUncompress); _out = BlockSizeUncompress; ret=inflate(&zcpr,Z_SYNC_FLUSH); lOrigDone += (_in-all_read_before); lOrigToDo -= (_in-all_read_before); step++; } while (ret==Z_OK); lSizeUncpr=_out; inflateEnd(&zcpr); dwGetTick=GetTickCount()-dwGetTick; dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE); dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE); printf("total uncompress size = %u, in %u stepn",lSizeUncpr,step);