Initial commit

base/timeutil.cpp

@@ -0,0 +1,80 @@
+#include "base/basictypes.h"
+#include "base/timeutil.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+#include <stdio.h>
+
+static double curtime = 0;
+static float curtime_f = 0;
+
+#ifdef _WIN32
+
+__int64 _frequency = 0;
+__int64 _starttime = 0;
+
+double real_time_now(){
+	if (_frequency == 0) {
+		QueryPerformanceFrequency((LARGE_INTEGER*)&_frequency);
+		QueryPerformanceCounter((LARGE_INTEGER*)&_starttime);
+		curtime=0;
+	}
+	__int64 time;
+	QueryPerformanceCounter((LARGE_INTEGER*)&time);
+	return ((double) (time - _starttime) / (double) _frequency);
+}
+
+#else
+
+double real_time_now() {
+  static time_t start;
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  if (start == 0) {
+    start = tv.tv_sec;
+  }
+  tv.tv_sec -= start;
+  return (double)tv.tv_sec + (double)tv.tv_usec / 1000000.0;
+}
+
+#endif
+
+void time_update() {
+  curtime = real_time_now();
+  curtime_f = (float)curtime;
+
+	//printf("curtime: %f %f\n", curtime, curtime_f);
+	// also smooth time.
+	//curtime+=float((double) (time-_starttime) / (double) _frequency);
+	//curtime*=0.5f;
+	//curtime+=1.0f/60.0f;
+	//lastTime=curtime;
+  //curtime_f = (float)curtime;
+}
+
+float time_now() {
+	return curtime_f;
+}
+
+double time_now_d() {
+  return curtime;
+}
+
+int time_now_ms() {
+	return int(curtime*1000.0);
+}
+
+void sleep_ms(int ms) {
+#ifdef _WIN32
+#ifndef METRO
+	Sleep(ms);
+#endif
+#else
+	usleep(ms * 1000);
+#endif
+}
+