Add Timing, TimingData and Timed classes for time measurement to pbd/timing.h

1 files changed, 66 insertions, 0 deletions

diff --git a/libs/pbd/timing.cc b/libs/pbd/timing.cc
new file mode 100644
index 0000000000..b811c09f96
--- /dev/null
+++ b/libs/pbd/timing.cc
@@ -0,0 +1,66 @@
+/*
+    Copyright (C) 2014 Tim Mayberry
+
+    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.
+
+*/
+
+#include "pbd/timing.h"
+
+#include <sstream>
+#include <limits>
+
+namespace PBD {
+
+bool
+get_min_max_avg_total (const std::vector<uint64_t>& values, uint64_t& min, uint64_t& max, uint64_t& avg, uint64_t& total)
+{
+	if (values.empty()) {
+		return false;
+	}
+
+	total = 0;
+	min = std::numeric_limits<uint64_t>::max();
+	max = 0; avg = 0;
+
+	for (std::vector<uint64_t>::const_iterator ci = values.begin(); ci != values.end(); ++ci) {
+		total += *ci;
+		min = std::min (min, *ci);
+		max = std::max (max, *ci);
+	}
+
+	avg = total / values.size();
+	return true;
+}
+
+std::string
+timing_summary (const std::vector<uint64_t>& values)
+{
+	std::ostringstream oss;
+
+	uint64_t min, max, avg, total;
+
+	if (get_min_max_avg_total (values, min, max, avg, total)) {
+		oss << "Count: " << values.size()
+		    << " Min: " << min
+		    << " Max: " << max
+		    << " Avg: " << avg
+		    << " Total: " << total
+		    << std::endl;
+	}
+	return oss.str();
+}
+
+} // namespace PBD