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/**
* @file lltracerecording.h
* @brief Sampling object for collecting runtime statistics originating from lltrace.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2012, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLTRACERECORDING_H
#define LL_LLTRACERECORDING_H
#include "stdtypes.h"
#include "llpreprocessor.h"
#include "llpointer.h"
#include "lltimer.h"
#include "lltrace.h"
class LL_COMMON_API LLVCRControlsMixinCommon
{
public:
virtual ~LLVCRControlsMixinCommon() {}
enum EPlayState
{
STOPPED,
PAUSED,
STARTED
};
void start();
void stop();
void pause();
void resume();
void restart();
void reset();
bool isStarted() { return mPlayState == STARTED; }
bool isPaused() { return mPlayState == PAUSED; }
bool isStopped() { return mPlayState == STOPPED; }
EPlayState getPlayState() { return mPlayState; }
protected:
LLVCRControlsMixinCommon()
: mPlayState(STOPPED)
{}
private:
// trigger data accumulation (without reset)
virtual void handleStart() = 0;
// stop data accumulation, should put object in queryable state
virtual void handleStop() = 0;
// clear accumulated values, can be called while started
virtual void handleReset() = 0;
EPlayState mPlayState;
};
template<typename DERIVED>
class LLVCRControlsMixin
: public LLVCRControlsMixinCommon
{
public:
void splitTo(DERIVED& other)
{
onSplitTo(other);
}
void splitFrom(DERIVED& other)
{
other.onSplitTo(*this);
}
private:
// atomically stop this object while starting the other
// no data can be missed in between stop and start
virtual void handleSplitTo(DERIVED& other) = 0;
};
namespace LLTrace
{
class LL_COMMON_API Recording : public LLVCRControlsMixin<Recording>
{
public:
Recording();
~Recording();
void makePrimary();
bool isPrimary() const;
void mergeRecording(const Recording& other);
void update();
// Count accessors
template <typename T, typename IS_UNIT>
typename Count<T, IS_UNIT>::base_unit_t getSum(const Count<T, IS_UNIT>& stat) const
{
return (typename Count<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mCounts).getSum();
}
template <typename T, typename IS_UNIT>
typename Count<T, IS_UNIT>::base_unit_t getPerSec(const Count<T, IS_UNIT>& stat) const
{
return (typename Count<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mCounts).getSum() / mElapsedSeconds;
}
// Measurement accessors
template <typename T, typename IS_UNIT>
typename Measurement<T, IS_UNIT>::base_unit_t getSum(const Measurement<T, IS_UNIT>& stat) const
{
return (typename Measurement<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mMeasurements).getSum();
}
template <typename T, typename IS_UNIT>
typename Measurement<T, IS_UNIT>::base_unit_t getPerSec(const Measurement<T, IS_UNIT>& stat) const
{
return (typename Count<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mMeasurements).getSum() / mElapsedSeconds;
}
template <typename T, typename IS_UNIT>
typename Measurement<T, IS_UNIT>::base_unit_t getMin(const Measurement<T, IS_UNIT>& stat) const
{
return (typename Measurement<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mMeasurements).getMin();
}
template <typename T, typename IS_UNIT>
typename Measurement<T, IS_UNIT>::base_unit_t getMax(const Measurement<T, IS_UNIT>& stat) const
{
return (typename Measurement<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mMeasurements).getMax();
}
template <typename T, typename IS_UNIT>
typename Measurement<T, IS_UNIT>::base_unit_t getMean(Measurement<T, IS_UNIT>& stat) const
{
return (typename Measurement<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mMeasurements).getMean();
}
template <typename T, typename IS_UNIT>
typename Measurement<T, IS_UNIT>::base_unit_t getStandardDeviation(const Measurement<T, IS_UNIT>& stat) const
{
return (typename Measurement<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mMeasurements).getStandardDeviation();
}
template <typename T, typename IS_UNIT>
typename Measurement<T, IS_UNIT>::base_unit_t getLastValue(const Measurement<T, IS_UNIT>& stat) const
{
return (typename Measurement<T, IS_UNIT>::base_unit_t)stat.getAccumulator(mMeasurements).getLastValue();
}
template <typename T, typename IS_UNIT>
U32 getSampleCount(const Measurement<T, IS_UNIT>& stat) const
{
return stat.getAccumulator(mMeasurements).getSampleCount();
}
F64 getDuration() const { return mElapsedSeconds; }
// implementation for LLVCRControlsMixin
/*virtual*/ void handleStart();
/*virtual*/ void handleStop();
/*virtual*/ void handleReset();
/*virtual*/ void handleSplitTo(Recording& other);
private:
friend class ThreadRecorder;
// returns data for current thread
class ThreadRecorder* getThreadRecorder();
LLCopyOnWritePointer<AccumulatorBuffer<CountAccumulator<F64> > > mCounts;
LLCopyOnWritePointer<AccumulatorBuffer<MeasurementAccumulator<F64> > > mMeasurements;
LLCopyOnWritePointer<AccumulatorBuffer<TimerAccumulator> > mStackTimers;
LLTimer mSamplingTimer;
F64 mElapsedSeconds;
};
class LL_COMMON_API PeriodicRecording
: public LLVCRControlsMixin<PeriodicRecording>
{
public:
PeriodicRecording(S32 num_periods);
~PeriodicRecording();
void nextPeriod();
Recording& getLastRecordingPeriod()
{
return mRecordingPeriods[(mCurPeriod + mNumPeriods - 1) % mNumPeriods];
}
const Recording& getLastRecordingPeriod() const
{
return mRecordingPeriods[(mCurPeriod + mNumPeriods - 1) % mNumPeriods];
}
Recording getCurRecordingPeriod()
{
return mRecordingPeriods[mCurPeriod];
}
const Recording& getCurRecordingPeriod() const
{
return mRecordingPeriods[mCurPeriod];
}
Recording snapshotCurRecordingPeriod() const
{
Recording recording_copy(getCurRecordingPeriod());
recording_copy.stop();
return recording_copy;
}
Recording& getTotalRecording();
private:
// implementation for LLVCRControlsMixin
/*virtual*/ void handleStart();
/*virtual*/ void handleStop();
/*virtual*/ void handleReset();
/*virtual*/ void handleSplitTo(PeriodicRecording& other);
Recording* mRecordingPeriods;
Recording mTotalRecording;
bool mTotalValid;
S32 mNumPeriods,
mCurPeriod;
};
PeriodicRecording& get_frame_recording();
class ExtendableRecording
: public LLVCRControlsMixin<ExtendableRecording>
{
void extend();
private:
// implementation for LLVCRControlsMixin
/*virtual*/ void handleStart();
/*virtual*/ void handleStop();
/*virtual*/ void handleReset();
/*virtual*/ void handleSplitTo(ExtendableRecording& other);
Recording mAcceptedRecording;
Recording mPotentialRecording;
};
}
#endif // LL_LLTRACERECORDING_H
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