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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
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. See the file
COPYING included with this distribution for more information.
*/
/*
This is a modified version of a source file from the
Rosegarden MIDI and audio sequencer and notation editor.
This file copyright 2000-2006 Chris Cannam, Guillaume Laurent,
and QMUL.
*/
#ifndef _PROFILER_H_
#define _PROFILER_H_
#include "system/System.h"
#include <ctime>
#include <sys/time.h>
#include <map>
#include "RealTime.h"
//#define NO_TIMING 1
//#define WANT_TIMING 1
#ifdef NDEBUG
#ifndef WANT_TIMING
#define NO_TIMING 1
#endif
#endif
/**
* Profiling classes
*/
/**
* The class holding all profiling data
*
* This class is a singleton
*/
class Profiles
{
public:
static Profiles* getInstance();
~Profiles();
void accumulate(const char* id, clock_t time, RealTime rt);
void dump() const;
protected:
Profiles();
typedef std::pair<clock_t, RealTime> TimePair;
typedef std::pair<int, TimePair> ProfilePair;
typedef std::map<const char *, ProfilePair> ProfileMap;
typedef std::map<const char *, TimePair> LastCallMap;
typedef std::map<const char *, TimePair> WorstCallMap;
ProfileMap m_profiles;
LastCallMap m_lastCalls;
WorstCallMap m_worstCalls;
static Profiles* m_instance;
};
#ifndef NO_TIMING
/**
* Profile point instance class. Construct one of these on the stack
* at the start of a function, in order to record the time consumed
* within that function. The profiler object should be effectively
* optimised out if NO_TIMING is defined, so any overhead in a release
* build should be negligible so long as you remember to define that.
*/
class Profiler
{
public:
/**
* Create a profile point instance that records time consumed
* against the given profiling point name. If showOnDestruct is
* true, the time consumed will be printed to stderr when the
* object is destroyed; otherwise, only the accumulated, mean and
* worst-case times will be shown when the program exits or
* Profiles::dump() is called.
*/
Profiler(const char *name, bool showOnDestruct = false);
~Profiler();
void update() const;
void end(); // same action as dtor
protected:
const char* m_c;
clock_t m_startCPU;
RealTime m_startTime;
bool m_showOnDestruct;
bool m_ended;
};
#else
class Profiler
{
public:
Profiler(const char *, bool = false) { }
~Profiler() { }
void update() const { }
void end() { }
};
#endif
#endif
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