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annotate src/timer.cc @ 2:334d17aed7de

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visual studio project files
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 02 Feb 2014 18:36:38 +0200
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nuclear@0 1 #include "timer.h"
nuclear@0 2
nuclear@0 3 #if defined(__APPLE__) && !defined(__unix__)
nuclear@0 4 #define __unix__
nuclear@0 5 #endif
nuclear@0 6
nuclear@0 7 #ifdef __unix__
nuclear@0 8 #include <time.h>
nuclear@0 9 #include <unistd.h>
nuclear@0 10 #include <sys/time.h>
nuclear@0 11
nuclear@0 12 #ifdef CLOCK_MONOTONIC
nuclear@0 13 unsigned long get_time_msec(void)
nuclear@0 14 {
nuclear@0 15 struct timespec ts;
nuclear@0 16 static struct timespec ts0;
nuclear@0 17
nuclear@0 18 clock_gettime(CLOCK_MONOTONIC, &ts);
nuclear@0 19 if(ts0.tv_sec == 0 && ts0.tv_nsec == 0) {
nuclear@0 20 ts0 = ts;
nuclear@0 21 return 0;
nuclear@0 22 }
nuclear@0 23 return (ts.tv_sec - ts0.tv_sec) * 1000 + (ts.tv_nsec - ts0.tv_nsec) / 1000000;
nuclear@0 24 }
nuclear@0 25 #else /* no fancy POSIX clocks, fallback to good'ol gettimeofday */
nuclear@0 26 unsigned long get_time_msec(void)
nuclear@0 27 {
nuclear@0 28 struct timeval tv;
nuclear@0 29 static struct timeval tv0;
nuclear@0 30
nuclear@0 31 gettimeofday(&tv, 0);
nuclear@0 32 if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
nuclear@0 33 tv0 = tv;
nuclear@0 34 return 0;
nuclear@0 35 }
nuclear@0 36 return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
nuclear@0 37 }
nuclear@0 38 #endif /* !posix clock */
nuclear@0 39
nuclear@0 40 void sleep_msec(unsigned long msec)
nuclear@0 41 {
nuclear@0 42 usleep(msec * 1000);
nuclear@0 43 }
nuclear@0 44 #endif
nuclear@0 45
nuclear@0 46 #ifdef WIN32
nuclear@0 47 #include <windows.h>
nuclear@0 48 #pragma comment(lib, "winmm.lib")
nuclear@0 49
nuclear@0 50 unsigned long get_time_msec(void)
nuclear@0 51 {
nuclear@0 52 return timeGetTime();
nuclear@0 53 }
nuclear@0 54
nuclear@0 55 void sleep_msec(unsigned long msec)
nuclear@0 56 {
nuclear@0 57 Sleep(msec);
nuclear@0 58 }
nuclear@0 59 #endif
nuclear@0 60
nuclear@0 61 double get_time_sec(void)
nuclear@0 62 {
nuclear@0 63 return get_time_msec() / 1000.0f;
nuclear@0 64 }
nuclear@0 65
nuclear@0 66 void sleep_sec(double sec)
nuclear@0 67 {
nuclear@0 68 if(sec > 0.0f) {
nuclear@0 69 sleep_msec(sec * 1000.0f);
nuclear@0 70 }
nuclear@0 71 }
nuclear@0 72
nuclear@0 73
nuclear@0 74 Timer::Timer()
nuclear@0 75 {
nuclear@0 76 reset();
nuclear@0 77 }
nuclear@0 78
nuclear@0 79 void Timer::reset()
nuclear@0 80 {
nuclear@0 81 pause_time = 0;
nuclear@0 82 start_time = get_time_msec();
nuclear@0 83 }
nuclear@0 84
nuclear@0 85 void Timer::start()
nuclear@0 86 {
nuclear@0 87 if(!is_running()) {
nuclear@0 88 // resuming
nuclear@0 89 start_time += get_time_msec() - pause_time;
nuclear@0 90 pause_time = 0;
nuclear@0 91 }
nuclear@0 92 }
nuclear@0 93
nuclear@0 94 void Timer::stop()
nuclear@0 95 {
nuclear@0 96 if(is_running()) {
nuclear@0 97 pause_time = get_time_msec();
nuclear@0 98 }
nuclear@0 99 }
nuclear@0 100
nuclear@0 101 bool Timer::is_running() const
nuclear@0 102 {
nuclear@0 103 return pause_time == 0;
nuclear@0 104 }
nuclear@0 105
nuclear@0 106 unsigned long Timer::get_msec() const
nuclear@0 107 {
nuclear@0 108 if(!is_running()) {
nuclear@0 109 // in paused state...
nuclear@0 110 return pause_time - start_time;
nuclear@0 111 }
nuclear@0 112 return get_time_msec() - start_time;
nuclear@0 113 }
nuclear@0 114
nuclear@0 115 double Timer::get_sec() const
nuclear@0 116 {
nuclear@0 117 return (double)get_msec() / 1000.0;
nuclear@0 118 }