(20111213)

Time.c

@@ -0,0 +1,83 @@
+#include <stdio.h>
+#include <math.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/time.h>
+#include <SDL/SDL.h>
+
+#include "Time.h"
+
+
+/////////////////////////////
+// Time_GetTime
+//
+// Gets the current time in usecs.
+/////////////////////////////
+// Time_Pause
+//
+// Pauses the execution for t usecs.
+#if WIN32
+#include <windows.h>
+// WIN32
+long long Time_GetTime(){
+	LARGE_INTEGER freq;
+	LARGE_INTEGER tim;
+	long long int microt;
+
+	QueryPerformanceFrequency(&freq);
+	QueryPerformanceCounter(&tim);
+	microt=(tim.QuadPart*1000000)/freq.QuadPart;
+	return(microt);
+}
+void Time_Pause(int pausa){
+	long long tend,t,diff;
+
+	tend=Time_GetTime()+pausa;
+	do{
+		diff=tend-t;
+		if(diff>1000){
+			SDL_Delay(diff/1000);
+		}else{
+			Sleep(0);
+		}
+		t=Time_GetTime();
+	}while(tend>=t);
+}
+#else
+#ifdef MACOSX
+#include <mach/mach_time.h>
+// MacOSX
+long long Time_GetTime(){
+	static mach_timebase_info_data_t info = {0,0};
+	uint64_t t;
+	if(info.denom==0){
+		mach_timebase_info(&info);
+	}
+	t=mach_absolute_time()*(info.numer / info.denom);
+	return(t/1000);
+}
+void Time_Pause(int pausa){
+	struct timeval tv;
+	tv.tv_sec=(long long)pausa/1000000;
+	tv.tv_usec=(long long)pausa%1000000;
+	select(0, NULL, NULL, NULL, &tv);
+}
+#else
+// UNIX
+long long Time_GetTime(){
+	struct timeval t;
+	long long usecs;
+	gettimeofday(&t,NULL);
+	usecs=(t.tv_sec*1000000ll)+(t.tv_usec);
+	return(usecs);
+}
+void Time_Pause(int pausa){
+	struct timeval tv;
+	tv.tv_sec=(long long)pausa/1000000;
+	tv.tv_usec=(long long)pausa%1000000;
+	select(0, NULL, NULL, NULL, &tv);
+}
+#endif // if MACOSX
+#endif // if WIN32
+
+