File: Profiler.h

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// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#pragma once

#include <list>
#include <mutex>
#include <string>

#include "CommonTypes.h"

namespace Common
{

class Profiler
{
public:
	Profiler(const std::string& name);
	~Profiler();

	static std::string ToString();

	void Start();
	void Stop();
	std::string Read();

	bool operator<(const Profiler& b) const;

private:
	static std::list<Profiler*> s_all_profilers;
	static std::mutex s_mutex;
	static u32 s_max_length;
	static u64 s_frame_time;
	static u64 s_usecs_frame;

	static std::string s_lazy_result;
	static int s_lazy_delay;

	std::string m_name;
	u64 m_usecs;
	u64 m_usecs_min;
	u64 m_usecs_max;
	u64 m_usecs_quad;
	u64 m_calls;
	u64 m_time;
	int m_depth;
};

class ProfilerExecuter
{
public:
	ProfilerExecuter(Profiler* _p) : m_p(_p)
	{
		m_p->Start();
	}
	~ProfilerExecuter()
	{
		m_p->Stop();
	}
private:
	Profiler* m_p;
};

};

// Warning: This profiler isn't thread safe. Only profile functions which doesn't run simultaneously
#define PROFILE(name) static Common::Profiler prof_gen(name); Common::ProfilerExecuter prof_e(&prof_gen);