Mercurial > MadButterfly
annotate src/timertool.c @ 776:77b561bb7929
Implement new algorithm to calculate the origin of the SVG elemnts so that we can implement object resize without changing the position of the object.
However, the image does not work here since it does not use the transformation of the group.
| author | wycc |
|---|---|
| date | Mon, 30 Aug 2010 08:56:44 +0800 |
| parents | 530bb7728546 |
| children | 586e50f82c1f |
| rev | line source |
|---|---|
|
92
3f619ae03678
Improve calcuator example program.
Thinker K.F. Li <thinker@branda.to>
parents:
78
diff
changeset
|
1 #include <stdio.h> |
| 77 | 2 #include <sys/time.h> |
| 3 #ifdef __FreeBSD__ | |
| 4 #include <machine/cpufunc.h> | |
| 5 #include <sys/types.h> | |
| 6 #include <sys/sysctl.h> | |
| 7 #endif | |
|
186
530bb7728546
Move header files to $(top_srcdir)/include/ and prefixed with 'mb_'.
Thinker K.F. Li <thinker@branda.to>
parents:
185
diff
changeset
|
8 #include "mb_timer.h" |
| 77 | 9 |
| 10 | |
| 11 #ifdef __FreeBSD__ | |
| 12 void get_now(mb_timeval_t *tmo) { | |
| 13 struct timeval tv; | |
| 14 static uint64_t cpufreq; | |
| 120 | 15 static uint64_t diff; |
| 77 | 16 static mb_timeval_t tm = {0, 0}; |
| 17 static uint64_t last_ts; | |
| 18 mb_timeval_t diff_tm; | |
| 120 | 19 uint64_t ts, udiff, sdiff; |
| 77 | 20 size_t sysctl_sz; |
| 78 | 21 int r; |
| 77 | 22 |
| 23 if(MB_TIMEVAL_SEC(&tm) == 0) { | |
| 24 sysctl_sz = sizeof(uint64_t); | |
| 78 | 25 r = sysctlbyname("kern.timecounter.tc.TSC.frequency", |
| 26 &cpufreq, &sysctl_sz, | |
| 27 NULL, 0); | |
| 28 if(r == -1) { | |
| 29 perror("sysctl"); | |
| 30 return; | |
| 31 } | |
| 77 | 32 |
| 33 gettimeofday(&tv, NULL); | |
| 34 last_ts = rdtsc(); | |
| 35 | |
| 36 MB_TIMEVAL_SET(tmo, tv.tv_sec, tv.tv_usec); | |
| 37 MB_TIMEVAL_CP(&tm, tmo); | |
| 38 diff = 0; | |
| 39 } else { | |
| 40 ts = rdtsc(); | |
| 120 | 41 diff += ts - last_ts; |
| 77 | 42 sdiff = diff / cpufreq; |
| 43 udiff = (diff % cpufreq) * 1000000 / cpufreq; | |
| 44 | |
| 45 MB_TIMEVAL_SET(&diff_tm, sdiff, udiff); | |
| 46 MB_TIMEVAL_CP(tmo, &tm); | |
| 47 MB_TIMEVAL_ADD(tmo, &diff_tm); | |
| 48 | |
| 49 MB_TIMEVAL_SET(&diff_tm, sdiff, 0); | |
| 50 MB_TIMEVAL_ADD(&tm, &diff_tm); | |
| 51 | |
| 120 | 52 diff %= cpufreq; |
| 53 last_ts = ts; | |
| 77 | 54 } |
| 55 } | |
| 56 #else /* __FreeBSD__ */ | |
| 57 void get_now(mb_timeval_t *tmo) { | |
| 58 struct timeval tv; | |
| 59 | |
| 60 gettimeofday(&tv, NULL); | |
| 61 MB_TIMEVAL_SET(tmo, tv.tv_sec, tv.tv_usec); | |
| 62 } | |
| 63 #endif /* __FreeBSD__ */ | |
| 64 |