1 files changed, 61 insertions, 0 deletions
diff --git a/libs/pbd3/pbd/precision_timer.h b/libs/pbd3/pbd/precision_timer.h
new file mode 100644
index 0000000000..a103b4800d
--- /dev/null
+++ b/libs/pbd3/pbd/precision_timer.h
@@ -0,0 +1,61 @@
+/*
+    Copyright (C) 1998-99 Paul Barton-Davis 
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    $Id$
+*/
+
+#ifndef __precision_timer_h__
+#define __precision_timer_h__
+
+#include <pbd/cycles.h>
+
+typedef cycles_t precision_time_t;
+
+class PrecisionTimer {
+  public:
+	PrecisionTimer ();
+
+	/* returns current time in microseconds since
+	   the time base was created (which may be
+	   the same as when the PrecisionTimer was
+	   created or it may not).
+	*/
+	
+#ifdef PBD_HAVE_CYCLE_COUNTER
+
+	precision_time_t current () {
+		return get_cycles() / cycles_per_usec;
+	}
+
+#else /* !HAVE_CYCLE_COUNTER */
+
+	precision_time_t current () {
+		struct timeval now;
+		gettimeofday (&now, 0);
+		return (precision_time_t) ((now.tv_sec * 1000000) + now.tv_usec);
+	}
+	
+#endif /* HAVE_CYCLE_COUNTER */
+	
+  private:
+	int get_mhz();
+	static precision_time_t cycles_per_usec;
+};
+
+#endif // __precision_timer.h
+
+