view base/Profiler.cpp @ 1752:6d09d68165a4 by-id

Further review of ById: make IDs only available when adding a model to the ById store, not by querying the item directly. This means any id encountered in the wild must have been added to the store at some point (even if later released), which simplifies reasoning about lifecycles

/* -*- 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.
*/

#include <iostream>
#include "Profiler.h"

#include <cstdio>

#include <vector>
#include <algorithm>
#include <set>
#include <map>

Profiles* Profiles::m_instance = nullptr;

Profiles* Profiles::getInstance()
{
    if (!m_instance) m_instance = new Profiles();
    
    return m_instance;
}

Profiles::Profiles()
{
}

Profiles::~Profiles()
{
    dump();
}

#ifndef NO_TIMING
void Profiles::accumulate(
    const char* id, clock_t time, RealTime rt
)
{
    ProfilePair &pair(m_profiles[id]);
    ++pair.first;
    pair.second.first += time;
    pair.second.second = pair.second.second + rt;

    TimePair &lastPair(m_lastCalls[id]);
    lastPair.first = time;
    lastPair.second = rt;

    TimePair &worstPair(m_worstCalls[id]);
    if (time > worstPair.first) {
        worstPair.first = time;
    }
    if (rt > worstPair.second) {
        worstPair.second = rt;
    }
}
#endif

void Profiles::dump() const
{
#ifndef NO_TIMING

    fprintf(stderr, "Profiling points:\n");

    fprintf(stderr, "\nBy name:\n");

    typedef std::set<const char *, std::less<std::string> > StringSet;

    StringSet profileNames;
    for (ProfileMap::const_iterator i = m_profiles.begin();
         i != m_profiles.end(); ++i) {
        profileNames.insert(i->first);
    }

    for (StringSet::const_iterator i = profileNames.begin();
         i != profileNames.end(); ++i) {

        ProfileMap::const_iterator j = m_profiles.find(*i);

        if (j == m_profiles.end()) continue;

        const ProfilePair &pp(j->second);

        fprintf(stderr, "%s(%d):\n", *i, pp.first);

        fprintf(stderr, "\tCPU:  \t%.9g ms/call \t[%d ms total]\n",
                (((double)pp.second.first * 1000.0 /
                  (double)pp.first) / CLOCKS_PER_SEC),
                int((double(pp.second.first) * 1000.0) / CLOCKS_PER_SEC));

        fprintf(stderr, "\tReal: \t%s ms      \t[%s ms total]\n",
                ((pp.second.second / pp.first) * 1000).toString().c_str(),
                (pp.second.second * 1000).toString().c_str());

        WorstCallMap::const_iterator k = m_worstCalls.find(*i);
        if (k == m_worstCalls.end()) continue;
        
        const TimePair &wc(k->second);

        fprintf(stderr, "\tWorst:\t%s ms/call \t[%d ms CPU]\n",
                (wc.second * 1000).toString().c_str(),
                int((double(wc.first) * 1000.0) / CLOCKS_PER_SEC));
    }

    typedef std::multimap<RealTime, const char *> TimeRMap;
    typedef std::multimap<int, const char *> IntRMap;
    
    TimeRMap totmap, avgmap, worstmap;
    IntRMap ncallmap;

    for (ProfileMap::const_iterator i = m_profiles.begin();
         i != m_profiles.end(); ++i) {
        totmap.insert(TimeRMap::value_type(i->second.second.second, i->first));
        avgmap.insert(TimeRMap::value_type(i->second.second.second /
                                           i->second.first, i->first));
        ncallmap.insert(IntRMap::value_type(i->second.first, i->first));
    }

    for (WorstCallMap::const_iterator i = m_worstCalls.begin();
         i != m_worstCalls.end(); ++i) {
        worstmap.insert(TimeRMap::value_type(i->second.second,
                                             i->first));
    }


    fprintf(stderr, "\nBy total:\n");
    for (TimeRMap::const_iterator i = totmap.end(); i != totmap.begin(); ) {
        --i;
        fprintf(stderr, "%-40s  %s ms\n", i->second,
                (i->first * 1000).toString().c_str());
    }

    fprintf(stderr, "\nBy average:\n");
    for (TimeRMap::const_iterator i = avgmap.end(); i != avgmap.begin(); ) {
        --i;
        fprintf(stderr, "%-40s  %s ms\n", i->second,
                (i->first * 1000).toString().c_str());
    }

    fprintf(stderr, "\nBy worst case:\n");
    for (TimeRMap::const_iterator i = worstmap.end(); i != worstmap.begin(); ) {
        --i;
        fprintf(stderr, "%-40s  %s ms\n", i->second,
                (i->first * 1000).toString().c_str());
    }

    fprintf(stderr, "\nBy number of calls:\n");
    for (IntRMap::const_iterator i = ncallmap.end(); i != ncallmap.begin(); ) {
        --i;
        fprintf(stderr, "%-40s  %d\n", i->second, i->first);
    }

#endif
}

#ifndef NO_TIMING    

Profiler::Profiler(const char* c, bool showOnDestruct) :
    m_c(c),
    m_showOnDestruct(showOnDestruct),
    m_ended(false)
{
    m_startCPU = clock();

    struct timeval tv;
    (void)gettimeofday(&tv, 0);
    m_startTime = RealTime::fromTimeval(tv);
}

void
Profiler::update() const
{
    clock_t elapsedCPU = clock() - m_startCPU;

    struct timeval tv;
    (void)gettimeofday(&tv, 0);
    RealTime elapsedTime = RealTime::fromTimeval(tv) - m_startTime;

    cerr << "Profiler : id = " << m_c
         << " - elapsed so far = " << ((elapsedCPU * 1000) / CLOCKS_PER_SEC)
         << "ms CPU, " << elapsedTime << " real" << endl;
}    

Profiler::~Profiler()
{
    if (!m_ended) end();
}

void
Profiler::end()
{
    clock_t elapsedCPU = clock() - m_startCPU;

    struct timeval tv;
    (void)gettimeofday(&tv, 0);
    RealTime elapsedTime = RealTime::fromTimeval(tv) - m_startTime;

    Profiles::getInstance()->accumulate(m_c, elapsedCPU, elapsedTime);

    if (m_showOnDestruct)
        cerr << "Profiler : id = " << m_c
             << " - elapsed = " << ((elapsedCPU * 1000) / CLOCKS_PER_SEC)
             << "ms CPU, " << elapsedTime << " real" << endl;

    m_ended = true;
}
 
#endif