nuclear@0: #include "timer.h"
nuclear@0: 
nuclear@0: #if defined(__APPLE__) && !defined(__unix__)
nuclear@0: #define __unix__
nuclear@0: #endif
nuclear@0: 
nuclear@0: #ifdef __unix__
nuclear@0: #include <time.h>
nuclear@0: #include <unistd.h>
nuclear@0: #include <sys/time.h>
nuclear@0: 
nuclear@0: #ifdef CLOCK_MONOTONIC
nuclear@0: unsigned long get_time_msec(void)
nuclear@0: {
nuclear@0: 	struct timespec ts;
nuclear@0: 	static struct timespec ts0;
nuclear@0: 
nuclear@0: 	clock_gettime(CLOCK_MONOTONIC, &ts);
nuclear@0: 	if(ts0.tv_sec == 0 && ts0.tv_nsec == 0) {
nuclear@0: 		ts0 = ts;
nuclear@0: 		return 0;
nuclear@0: 	}
nuclear@0: 	return (ts.tv_sec - ts0.tv_sec) * 1000 + (ts.tv_nsec - ts0.tv_nsec) / 1000000;
nuclear@0: }
nuclear@0: #else	/* no fancy POSIX clocks, fallback to good'ol gettimeofday */
nuclear@0: unsigned long get_time_msec(void)
nuclear@0: {
nuclear@0: 	struct timeval tv;
nuclear@0: 	static struct timeval tv0;
nuclear@0: 
nuclear@0: 	gettimeofday(&tv, 0);
nuclear@0: 	if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
nuclear@0: 		tv0 = tv;
nuclear@0: 		return 0;
nuclear@0: 	}
nuclear@0: 	return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
nuclear@0: }
nuclear@0: #endif	/* !posix clock */
nuclear@0: 
nuclear@0: void sleep_msec(unsigned long msec)
nuclear@0: {
nuclear@0: 	usleep(msec * 1000);
nuclear@0: }
nuclear@0: #endif
nuclear@0: 
nuclear@0: #ifdef WIN32
nuclear@0: #include <windows.h>
nuclear@0: #pragma comment(lib, "winmm.lib")
nuclear@0: 
nuclear@0: unsigned long get_time_msec(void)
nuclear@0: {
nuclear@0: 	return timeGetTime();
nuclear@0: }
nuclear@0: 
nuclear@0: void sleep_msec(unsigned long msec)
nuclear@0: {
nuclear@0: 	Sleep(msec);
nuclear@0: }
nuclear@0: #endif
nuclear@0: 
nuclear@0: double get_time_sec(void)
nuclear@0: {
nuclear@0: 	return get_time_msec() / 1000.0f;
nuclear@0: }
nuclear@0: 
nuclear@0: void sleep_sec(double sec)
nuclear@0: {
nuclear@0: 	if(sec > 0.0f) {
nuclear@0: 		sleep_msec(sec * 1000.0f);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: Timer::Timer()
nuclear@0: {
nuclear@0: 	reset();
nuclear@0: }
nuclear@0: 
nuclear@0: void Timer::reset()
nuclear@0: {
nuclear@0: 	pause_time = 0;
nuclear@0: 	start_time = get_time_msec();
nuclear@0: }
nuclear@0: 
nuclear@0: void Timer::start()
nuclear@0: {
nuclear@0: 	if(!is_running()) {
nuclear@0: 		// resuming
nuclear@0: 		start_time += get_time_msec() - pause_time;
nuclear@0: 		pause_time = 0;
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: void Timer::stop()
nuclear@0: {
nuclear@0: 	if(is_running()) {
nuclear@0: 		pause_time = get_time_msec();
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: bool Timer::is_running() const
nuclear@0: {
nuclear@0: 	return pause_time == 0;
nuclear@0: }
nuclear@0: 
nuclear@0: unsigned long Timer::get_msec() const
nuclear@0: {
nuclear@0: 	if(!is_running()) {
nuclear@0: 		// in paused state...
nuclear@0: 		return pause_time - start_time;
nuclear@0: 	}
nuclear@0: 	return get_time_msec() - start_time;
nuclear@0: }
nuclear@0: 
nuclear@0: double Timer::get_sec() const
nuclear@0: {
nuclear@0: 	return (double)get_msec() / 1000.0;
nuclear@0: }