istereo2
annotate src/timer.c @ 22:c6971ff4795e
screenshot helper code
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Fri, 02 Oct 2015 07:10:19 +0300 |
| parents | |
| children |
| rev | line source |
|---|---|
| nuclear@8 | 1 #include "timer.h" |
| nuclear@8 | 2 |
| nuclear@8 | 3 #if defined(__APPLE__) && !defined(__unix__) |
| nuclear@8 | 4 #define __unix__ |
| nuclear@8 | 5 #endif |
| nuclear@8 | 6 |
| nuclear@8 | 7 #ifdef __unix__ |
| nuclear@8 | 8 #include <time.h> |
| nuclear@8 | 9 #include <unistd.h> |
| nuclear@8 | 10 #include <sys/time.h> |
| nuclear@8 | 11 |
| nuclear@8 | 12 #ifdef CLOCK_MONOTONIC |
| nuclear@8 | 13 unsigned long get_time_msec(void) |
| nuclear@8 | 14 { |
| nuclear@8 | 15 struct timespec ts; |
| nuclear@8 | 16 static struct timespec ts0; |
| nuclear@8 | 17 |
| nuclear@8 | 18 clock_gettime(CLOCK_MONOTONIC, &ts); |
| nuclear@8 | 19 if(ts0.tv_sec == 0 && ts0.tv_nsec == 0) { |
| nuclear@8 | 20 ts0 = ts; |
| nuclear@8 | 21 return 0; |
| nuclear@8 | 22 } |
| nuclear@8 | 23 return (ts.tv_sec - ts0.tv_sec) * 1000 + (ts.tv_nsec - ts0.tv_nsec) / 1000000; |
| nuclear@8 | 24 } |
| nuclear@8 | 25 #else /* no fancy POSIX clocks, fallback to good'ol gettimeofday */ |
| nuclear@8 | 26 unsigned long get_time_msec(void) |
| nuclear@8 | 27 { |
| nuclear@8 | 28 struct timeval tv; |
| nuclear@8 | 29 static struct timeval tv0; |
| nuclear@8 | 30 |
| nuclear@8 | 31 gettimeofday(&tv, 0); |
| nuclear@8 | 32 if(tv0.tv_sec == 0 && tv0.tv_usec == 0) { |
| nuclear@8 | 33 tv0 = tv; |
| nuclear@8 | 34 return 0; |
| nuclear@8 | 35 } |
| nuclear@8 | 36 return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000; |
| nuclear@8 | 37 } |
| nuclear@8 | 38 #endif /* !posix clock */ |
| nuclear@8 | 39 |
| nuclear@8 | 40 void sleep_msec(unsigned long msec) |
| nuclear@8 | 41 { |
| nuclear@8 | 42 usleep(msec * 1000); |
| nuclear@8 | 43 } |
| nuclear@8 | 44 #endif |
| nuclear@8 | 45 |
| nuclear@8 | 46 #ifdef WIN32 |
| nuclear@8 | 47 #include <windows.h> |
| nuclear@8 | 48 #pragma comment(lib, "winmm.lib") |
| nuclear@8 | 49 |
| nuclear@8 | 50 unsigned long get_time_msec(void) |
| nuclear@8 | 51 { |
| nuclear@8 | 52 return timeGetTime(); |
| nuclear@8 | 53 } |
| nuclear@8 | 54 |
| nuclear@8 | 55 void sleep_msec(unsigned long msec) |
| nuclear@8 | 56 { |
| nuclear@8 | 57 Sleep(msec); |
| nuclear@8 | 58 } |
| nuclear@8 | 59 #endif |
| nuclear@8 | 60 |
| nuclear@8 | 61 double get_time_sec(void) |
| nuclear@8 | 62 { |
| nuclear@8 | 63 return get_time_msec() / 1000.0f; |
| nuclear@8 | 64 } |
| nuclear@8 | 65 |
| nuclear@8 | 66 void sleep_sec(double sec) |
| nuclear@8 | 67 { |
| nuclear@8 | 68 if(sec > 0.0f) { |
| nuclear@8 | 69 sleep_msec(sec * 1000.0f); |
| nuclear@8 | 70 } |
| nuclear@8 | 71 } |