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mermsemr/src/core/timer.cc

@@ -0,0 +1,49 @@
+#include <unistd.h>
+#include <sys/time.h>
+#include "timer.h"
+
+
+unsigned long stamp()
+{
+	struct timeval tv;
+
+	gettimeofday( &tv, NULL );
+
+	return tv.tv_sec * 1000000 + tv.tv_usec;
+}
+
+
+CTimer::CTimer( )
+{
+	prev = stamp();
+}
+
+
+void CTimer::init( )
+{
+	prev = stamp();
+}
+
+
+void CTimer::wake( unsigned long usec )
+{
+	long sleep_time = usec-(stamp()-prev);
+
+	if ( sleep_time>0 )
+		usleep( sleep_time );
+
+	prev = stamp();
+}
+
+
+bool CTimer::timeout( unsigned long usec )
+{
+	return stamp()-prev > usec;
+}
+
+
+unsigned long CTimer::elapsed(  )
+{
+	return stamp()-prev;
+}
+