Add util.c

util.c

@@ -0,0 +1,36 @@
+#include <time.h>
+
+#ifdef NMRPFLASH_OSX
+#include <mach/mach_time.h>
+#endif
+
+time_t time_monotonic()
+{
+#ifndef NMRPFLASH_WINDOWS
+#ifndef NMRPFLASH_OSX
+	struct timespec ts;
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	return ts.ts_sec;
+#else
+	static double factor = 0.0;
+	mach_timebase_info_data_t timebase;
+	if (factor == 0.0) {
+		mach_timebase_info(&timebase);
+		factor = (double)timebase.numer / timebase.denom;
+	}
+
+	return round(mach_absolute_time() * factor / 1e9);
+#endif
+#else
+	return round(GetTickCount() / 1000.0);
+#endif
+}
+
+int main()
+{
+	time_t beg = time_monotonic();
+	printf("now: %ld\n", beg);
+	sleep(2);
+	printf("+2s: %ld\n", time_monotonic());
+	return 0;
+}