liblash

A bianry tree implementation used for game development from scratch
git clone git://holbrook.no/liblash.git
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debug_timer.c (1107B)

      1 #include <time.h>
      2 
      3 #include "debug_timer.h"
      4 
      5 void debugTimerReset(debug_timer_t *time) {
      6 	time->running = 0;
      7 	time->paused = 0;
      8 	time->count = 0;
      9 	time->total = 0;
     10 }
     11 
     12 void debugTimerStart(debug_timer_t *time) {
     13 	clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(time->snap_start));
     14 	time->running = 1;
     15 }
     16 
     17 long debugTimerPause(debug_timer_t *time) {
     18 	if (!time->running)
     19 		return 0;
     20 		
     21 	if (time->paused) {
     22 		clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(time->snap_tmp));
     23 		time->snap_start.tv_nsec += time->snap_tmp.tv_nsec - time->snap_end.tv_nsec;
     24 		time->paused = 0;
     25 		return time->snap_tmp.tv_nsec;
     26 	} else {
     27 		clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(time->snap_end));
     28 		time->paused = 1;
     29 		return time->snap_end.tv_nsec;
     30 	}
     31 }
     32 
     33 void debugTimerStop(debug_timer_t * time) {
     34 	if (time->running == 0)
     35 		return;
     36 	
     37 	if (!time->paused)
     38 		clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &(time->snap_end));
     39 		
     40 	time->total = time->snap_end.tv_nsec - time->snap_start.tv_nsec;
     41 	time->count++;
     42 	time->running = 0;
     43 	time->paused = 0;
     44 }
     45 
     46 float debugTimerGetAverage(debug_timer_t *time) {
     47 	return time->total / (float)time->count;
     48 }