view base/Profiler.h @ 97:22494cc28c9f

* Reduce number of allocations and deallocations by keeping a spare buffer
  around (we were generally deallocating and then immediately allocating again,
  so it's much better not to have to bother as very large allocations can tie
  up the system)

/* -*- 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 and Guillaume Laurent.
*/


#ifndef _PROFILER_H_
#define _PROFILER_H_

#include "System.h"

#include <ctime>
#include <sys/time.h>
#include <map>

#include "RealTime.h"


/**
 * 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();

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;
    ProfileMap m_profiles;
    LastCallMap m_lastCalls;

    static Profiles* m_instance;
};

class Profiler
{
public:
    Profiler(const char*, bool showOnDestruct = false);
    ~Profiler();

    void update();

protected:
    const char* m_c;
    clock_t m_startCPU;
    RealTime m_startTime;
    bool m_showOnDestruct;
};
 

#endif