Initial commit

src/profiler.h

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+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+#include "irrlichttypes.h"
+#include <cassert>
+#include <string>
+#include <map>
+#include <ostream>
+
+#include "threading/mutex_auto_lock.h"
+#include "util/timetaker.h"
+#include "util/numeric.h"      // paging()
+
+// Global profiler
+class Profiler;
+extern Profiler *g_profiler;
+
+/*
+	Time profiler
+*/
+
+class Profiler
+{
+public:
+	Profiler();
+
+	void add(const std::string &name, float value);
+	void avg(const std::string &name, float value);
+	void clear();
+
+	float getValue(const std::string &name) const;
+	int getAvgCount(const std::string &name) const;
+	u64 getElapsedMs() const;
+
+	typedef std::map<std::string, float> GraphValues;
+
+	// Returns the line count
+	int print(std::ostream &o, u32 page = 1, u32 pagecount = 1);
+	void getPage(GraphValues &o, u32 page, u32 pagecount);
+
+
+	void graphAdd(const std::string &id, float value)
+	{
+		MutexAutoLock lock(m_mutex);
+		std::map<std::string, float>::iterator i =
+				m_graphvalues.find(id);
+		if(i == m_graphvalues.end())
+			m_graphvalues[id] = value;
+		else
+			i->second += value;
+	}
+	void graphGet(GraphValues &result)
+	{
+		MutexAutoLock lock(m_mutex);
+		result = m_graphvalues;
+		m_graphvalues.clear();
+	}
+
+	void remove(const std::string& name)
+	{
+		MutexAutoLock lock(m_mutex);
+		m_avgcounts.erase(name);
+		m_data.erase(name);
+	}
+
+private:
+	std::mutex m_mutex;
+	std::map<std::string, float> m_data;
+	std::map<std::string, int> m_avgcounts;
+	std::map<std::string, float> m_graphvalues;
+	u64 m_start_time;
+};
+
+enum ScopeProfilerType{
+	SPT_ADD,
+	SPT_AVG,
+	SPT_GRAPH_ADD
+};
+
+class ScopeProfiler
+{
+public:
+	ScopeProfiler(Profiler *profiler, const std::string &name,
+			ScopeProfilerType type = SPT_ADD);
+	~ScopeProfiler();
+private:
+	Profiler *m_profiler = nullptr;
+	std::string m_name;
+	TimeTaker *m_timer = nullptr;
+	enum ScopeProfilerType m_type;
+};