goat3dgfx

annotate src/timer.cc @ 15:7d6b667821cf

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wrapped everything in the goatgfx namespace
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 30 Nov 2013 20:52:21 +0200
parents 1873dfd13f2d
children
rev   line source
nuclear@0 1 #include "timer.h"
nuclear@0 2
nuclear@15 3 using namespace goatgfx;
nuclear@15 4
nuclear@0 5 #if defined(__APPLE__) && !defined(__unix__)
nuclear@0 6 #define __unix__
nuclear@0 7 #endif
nuclear@0 8
nuclear@15 9 namespace goatgfx {
nuclear@15 10
nuclear@0 11 #ifdef __unix__
nuclear@0 12 #include <time.h>
nuclear@0 13 #include <unistd.h>
nuclear@0 14 #include <sys/time.h>
nuclear@0 15
nuclear@0 16 #ifdef CLOCK_MONOTONIC
nuclear@0 17 unsigned long get_time_msec(void)
nuclear@0 18 {
nuclear@0 19 struct timespec ts;
nuclear@0 20 static struct timespec ts0;
nuclear@0 21
nuclear@0 22 clock_gettime(CLOCK_MONOTONIC, &ts);
nuclear@0 23 if(ts0.tv_sec == 0 && ts0.tv_nsec == 0) {
nuclear@0 24 ts0 = ts;
nuclear@0 25 return 0;
nuclear@0 26 }
nuclear@0 27 return (ts.tv_sec - ts0.tv_sec) * 1000 + (ts.tv_nsec - ts0.tv_nsec) / 1000000;
nuclear@0 28 }
nuclear@0 29 #else /* no fancy POSIX clocks, fallback to good'ol gettimeofday */
nuclear@0 30 unsigned long get_time_msec(void)
nuclear@0 31 {
nuclear@0 32 struct timeval tv;
nuclear@0 33 static struct timeval tv0;
nuclear@0 34
nuclear@0 35 gettimeofday(&tv, 0);
nuclear@0 36 if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
nuclear@0 37 tv0 = tv;
nuclear@0 38 return 0;
nuclear@0 39 }
nuclear@0 40 return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
nuclear@0 41 }
nuclear@0 42 #endif /* !posix clock */
nuclear@0 43
nuclear@0 44 void sleep_msec(unsigned long msec)
nuclear@0 45 {
nuclear@0 46 usleep(msec * 1000);
nuclear@0 47 }
nuclear@0 48 #endif
nuclear@0 49
nuclear@0 50 #ifdef WIN32
nuclear@0 51 #include <windows.h>
nuclear@0 52 #pragma comment(lib, "winmm.lib")
nuclear@0 53
nuclear@0 54 unsigned long get_time_msec(void)
nuclear@0 55 {
nuclear@0 56 return timeGetTime();
nuclear@0 57 }
nuclear@0 58
nuclear@0 59 void sleep_msec(unsigned long msec)
nuclear@0 60 {
nuclear@0 61 Sleep(msec);
nuclear@0 62 }
nuclear@0 63 #endif
nuclear@0 64
nuclear@0 65 double get_time_sec(void)
nuclear@0 66 {
nuclear@0 67 return get_time_msec() / 1000.0f;
nuclear@0 68 }
nuclear@0 69
nuclear@0 70 void sleep_sec(double sec)
nuclear@0 71 {
nuclear@0 72 if(sec > 0.0f) {
nuclear@0 73 sleep_msec(sec * 1000.0f);
nuclear@0 74 }
nuclear@0 75 }
nuclear@0 76
nuclear@15 77 } // namespace goatgfx
nuclear@15 78
nuclear@0 79
nuclear@0 80 Timer::Timer()
nuclear@0 81 {
nuclear@0 82 reset();
nuclear@0 83 }
nuclear@0 84
nuclear@0 85 void Timer::reset()
nuclear@0 86 {
nuclear@0 87 pause_time = 0;
nuclear@0 88 start_time = get_time_msec();
nuclear@0 89 }
nuclear@0 90
nuclear@0 91 void Timer::start()
nuclear@0 92 {
nuclear@0 93 if(!is_running()) {
nuclear@0 94 // resuming
nuclear@0 95 start_time += get_time_msec() - pause_time;
nuclear@0 96 pause_time = 0;
nuclear@0 97 }
nuclear@0 98 }
nuclear@0 99
nuclear@0 100 void Timer::stop()
nuclear@0 101 {
nuclear@0 102 if(is_running()) {
nuclear@0 103 pause_time = get_time_msec();
nuclear@0 104 }
nuclear@0 105 }
nuclear@0 106
nuclear@0 107 bool Timer::is_running() const
nuclear@0 108 {
nuclear@0 109 return pause_time == 0;
nuclear@0 110 }
nuclear@0 111
nuclear@0 112 unsigned long Timer::get_msec() const
nuclear@0 113 {
nuclear@0 114 if(!is_running()) {
nuclear@0 115 // in paused state...
nuclear@0 116 return pause_time - start_time;
nuclear@0 117 }
nuclear@0 118 return get_time_msec() - start_time;
nuclear@0 119 }
nuclear@0 120
nuclear@0 121 double Timer::get_sec() const
nuclear@0 122 {
nuclear@0 123 return (double)get_msec() / 1000.0;
nuclear@0 124 }