rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 50 insertions, 0 deletions

diff --git a/libs/ardour/ardour/cycle_timer.h b/libs/ardour/ardour/cycle_timer.h
new file mode 100644
index 0000000000..4e1a50e602
--- /dev/null
+++ b/libs/ardour/ardour/cycle_timer.h
@@ -0,0 +1,50 @@
+/*
+    Copyright (C) 2002 Paul 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.
+
+*/
+
+#ifndef __ardour_cycle_timer_h__
+#define __ardour_cycle_timer_h__
+
+#include <string>
+#include <iostream>
+
+#include <ardour/cycles.h>
+
+class CycleTimer {
+  private:
+	static float cycles_per_usec;
+	cycles_t _entry;
+	cycles_t _exit;
+	std::string _name;
+	
+  public:
+	CycleTimer(std::string name) : _name (name){
+		if (cycles_per_usec == 0) {
+			cycles_per_usec = get_mhz ();
+		}
+		_entry = get_cycles();
+	}
+	~CycleTimer() {
+		_exit = get_cycles();
+		std::cerr << _name << ": " << (float) (_exit - _entry) / cycles_per_usec << " (" <<  _entry << ", " << _exit << ')' << endl;
+	}
+
+	static float get_mhz ();
+};
+
+#endif /* __ardour_cycle_timer_h__ */