Mercurial > hg > svcore
view base/Profiler.h @ 660:5db8181ea521
* getNativeRate needs to be virtual!
author | Chris Cannam |
---|---|
date | Mon, 18 Oct 2010 14:17:02 +0100 |
parents | 5a13b76cd034 |
children | c811991a5efa |
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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