70 lines
1.2 KiB
C++
70 lines
1.2 KiB
C++
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#include "timing.h"
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#ifdef TIMING
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#ifndef __alpha
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#include <stdio.h>
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static struct {
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unsigned int st_time[2];
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unsigned int cycles;
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unsigned int calls;
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} timingInfo[64];
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static int timingEnters;
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static void rdtsc(unsigned int t[2])
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{
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__asm
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{
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mov esi, t
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_emit 0xf
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_emit 0x31
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mov [esi], eax
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mov [esi+4], edx
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}
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}
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void _timingInit(void)
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{
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memset(timingInfo,0,sizeof(timingInfo));
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}
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void _timingEnter(int which)
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{
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// if (!timingEnters++) __asm cli
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rdtsc(timingInfo[which].st_time);
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}
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void _timingLeave(int which)
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{
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unsigned int t[2];
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rdtsc(t);
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// if (!--timingEnters) __asm sti
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if (t[1]==timingInfo[which].st_time[1])
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{
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timingInfo[which].cycles += t[0]-timingInfo[which].st_time[0];
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}
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else
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{
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timingInfo[which].cycles += t[0]+(0xffffffff-timingInfo[which].st_time[0]);
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}
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timingInfo[which].calls++;
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}
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void _timingPrint(void)
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{
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int x;
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FILE *fp = fopen("C:\\timings.txt","wt");
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for (x = 0; x < sizeof(timingInfo)/sizeof(timingInfo[0]); x ++)
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{
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if (timingInfo[x].calls)
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fprintf(fp,"%d: %d calls, %d clocks/call\n",x,timingInfo[x].calls,timingInfo[x].cycles/timingInfo[x].calls);
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}
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timingInit();
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fclose(fp);
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}
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#endif
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#endif
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