[Performous-commit] Lasse Karkkainen : Add profiling class that can be used for performance measurements.

[Lasse Kärkkäi. <tr...@us...>]

Module: performous
Branch: master
Commit: 0eaa864cb73e57b2b9f5e3887c8b7524f7170b28

Author: Lasse Karkkainen <tro...@tr...>
Date:   Sat Jul 18 15:02:45 2009 +0300

Add profiling class that can be used for performance measurements.
Usage:
Profiler prof("render"); // Description of what is profiled
foo();
prof("foo");
glStuff();
glFlush(); prof("gl"); // Remember to flush before measuring GL stuff
// When prof goes out of scope, it prints the results to std::cout

---

 game/profiler.hh |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/game/profiler.hh b/game/profiler.hh
new file mode 100644
index 0000000..256a2fc
--- /dev/null
+++ b/game/profiler.hh
@@ -0,0 +1,21 @@
+#pragma once
+
+#include "xtime.hh"
+#include <iostream>
+#include <sstream>
+#include <string>
+
+class Profiler {
+	std::ostringstream m_oss;
+	boost::xtime m_time;
+  public:
+	Profiler(std::string const& name): m_time(now()) { m_oss << name << ": "; }
+	~Profiler() { std::clog << m_oss.str() << std::endl; }
+	void operator()(std::string const& tag) {
+		boost::xtime n = now();
+		std::swap(n, m_time);
+		m_oss << unsigned((m_time - n) * 1000.0 + 0.5) << " ms (" << tag << ")  ";
+	}
+};
+
+