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comparison profile.c @ 0:435ac1cdb64e

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create task dandy directry.
author koba <koba@cr.ie.u-ryukyu.ac.jp>
date Sat, 11 Dec 2010 21:25:28 +0900
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-1:000000000000 0:435ac1cdb64e
1 #include<stdio.h>
2 #include<stdlib.h>
3 #include<string.h>
4 #include<sys/time.h>
5 #include<unistd.h>
6 #include"profile.h"
7
8 static unsigned long timeprof_overhead;
9
10 #define timeprof_get_time(t) {\
11 struct timeval t0;\
12 gettimeofday(&t0,NULL);\
13 (t).sec=t0.tv_sec;\
14 (t).usec=t0.tv_usec;}
15
16 void timeprof_begin(Timeprof t)
17 {
18 timeprof_get_time(t->begin);
19 }
20
21 int timeprof_end(Timeprof t)
22 {
23 unsigned int etime;
24 timeprof_get_time(t->end);
25 if (t->begin.usec > t->end.usec) {
26 t->end.usec += 1000000;
27 t->end.sec--;
28 }
29 etime = ((t->end.sec - t->begin.sec) * 1000000 +
30 (t->end.usec - t->begin.usec)) - timeprof_overhead;
31 if (etime > t->peak) {
32 t->peak = etime;
33 }
34 if (t->average > 0) {
35 t->average += etime;
36 t->average /= 2;
37 } else {
38 t->average = etime;
39 }
40 return etime;
41 }
42
43 void timeprof_sprint(char *s, const char *profname, Timeprof t)
44 {
45 sprintf(s, "%s: average:%dusec, peak:%dusec", profname, t->average,
46 t->peak);
47 }
48
49 void timeprof_init()
50 {
51 struct time_profile t;
52 timeprof_begin(&t);
53 timeprof_overhead = timeprof_end(&t);
54 }
55
56 Timeprof timeprof_new()
57 {
58 Timeprof t = (Timeprof) malloc(sizeof(struct time_profile));
59 memset(t, 0, sizeof(struct time_profile));
60 return t;
61 }