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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 LLStopWatchControlsMixinCommon
{
public:
virtual ~LLStopWatchControlsMixinCommon() {}
enum EStopWatchState
{
STOPPED,
PAUSED,
STARTED
};
virtual void start();
virtual void stop();
virtual void pause();
virtual void resume();
virtual void restart();
virtual void reset();
bool isStarted() const { return mState == STARTED; }
bool isPaused() const { return mState == PAUSED; }
bool isStopped() const { return mState == STOPPED; }
EStopWatchState getPlayState() const { return mState; }
protected:
LLStopWatchControlsMixinCommon()
: mState(STOPPED)
{}
// derived classes can call this from their copy constructor in order
// to duplicate play state of source
void initTo(EStopWatchState state);
private:
// trigger active behavior (without reset)
virtual void handleStart(){};
// stop active behavior
virtual void handleStop(){};
// clear accumulated state, can be called while started
virtual void handleReset(){};
EStopWatchState mState;
};
template<typename DERIVED>
class LLStopWatchControlsMixin
: public LLStopWatchControlsMixinCommon
{
public:
typedef LLStopWatchControlsMixin<DERIVED> self_t;
virtual void splitTo(DERIVED& other)
{
handleSplitTo(other);
}
virtual void splitFrom(DERIVED& other)
{
static_cast<self_t&>(other).handleSplitTo(*static_cast<DERIVED*>(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) {};
};
namespace LLTrace
{
class LL_COMMON_API Recording : public LLStopWatchControlsMixin<Recording>
{
public:
Recording();
Recording(const Recording& other);
~Recording();
void makePrimary();
bool isPrimary() const;
void appendRecording(const Recording& other);
void update();
// Count accessors
F64 getSum(const TraceType<CountAccumulator<F64> >& stat) const;
S64 getSum(const TraceType<CountAccumulator<S64> >& stat) const;
template <typename T>
T getSum(const Count<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getSum(static_cast<const TraceType<CountAccumulator<StorageType<T>::type_t> >&> (stat));
}
F64 getPerSec(const TraceType<CountAccumulator<F64> >& stat) const;
F64 getPerSec(const TraceType<CountAccumulator<S64> >& stat) const;
template <typename T>
T getPerSec(const Count<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getPerSec(static_cast<const TraceType<CountAccumulator<StorageType<T>::type_t> >&> (stat));
}
U32 getSampleCount(const TraceType<CountAccumulator<F64> >& stat) const;
U32 getSampleCount(const TraceType<CountAccumulator<S64> >& stat) const;
// Measurement accessors
F64 getSum(const TraceType<MeasurementAccumulator<F64> >& stat) const;
S64 getSum(const TraceType<MeasurementAccumulator<S64> >& stat) const;
template <typename T>
T getSum(const Measurement<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getSum(static_cast<const TraceType<MeasurementAccumulator<StorageType<T>::type_t> >&> (stat));
}
F64 getPerSec(const TraceType<MeasurementAccumulator<F64> >& stat) const;
F64 getPerSec(const TraceType<MeasurementAccumulator<S64> >& stat) const;
template <typename T>
T getPerSec(const Measurement<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getPerSec(static_cast<const TraceType<MeasurementAccumulator<StorageType<T>::type_t> >&> (stat));
}
F64 getMin(const TraceType<MeasurementAccumulator<F64> >& stat) const;
S64 getMin(const TraceType<MeasurementAccumulator<S64> >& stat) const;
template <typename T>
T getMin(const Measurement<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getMin(static_cast<const TraceType<MeasurementAccumulator<StorageType<T>::type_t> >&> (stat));
}
F64 getMax(const TraceType<MeasurementAccumulator<F64> >& stat) const;
S64 getMax(const TraceType<MeasurementAccumulator<S64> >& stat) const;
template <typename T>
T getMax(const Measurement<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getMax(static_cast<const TraceType<MeasurementAccumulator<StorageType<T>::type_t> >&> (stat));
}
F64 getMean(const TraceType<MeasurementAccumulator<F64> >& stat) const;
F64 getMean(const TraceType<MeasurementAccumulator<S64> >& stat) const;
template <typename T>
T getMean(Measurement<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getMean(static_cast<const TraceType<MeasurementAccumulator<StorageType<T>::type_t> >&> (stat));
}
F64 getStandardDeviation(const TraceType<MeasurementAccumulator<F64> >& stat) const;
F64 getStandardDeviation(const TraceType<MeasurementAccumulator<S64> >& stat) const;
template <typename T>
T getStandardDeviation(const Measurement<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getMean(static_cast<const TraceType<MeasurementAccumulator<StorageType<T>::type_t> >&> (stat));
}
F64 getLastValue(const TraceType<MeasurementAccumulator<F64> >& stat) const;
S64 getLastValue(const TraceType<MeasurementAccumulator<S64> >& stat) const;
template <typename T>
T getLastValue(const Measurement<T, typename T::is_unit_tag_t>& stat) const
{
return (T)getLastValue(static_cast<const TraceType<MeasurementAccumulator<StorageType<T>::type_t> >&> (stat));
}
U32 getSampleCount(const TraceType<MeasurementAccumulator<F64> >& stat) const;
U32 getSampleCount(const TraceType<MeasurementAccumulator<S64> >& stat) const;
LLUnit::Seconds<F64> getDuration() const { return mElapsedSeconds; }
private:
friend class ThreadRecorder;
// implementation for LLStopWatchControlsMixin
/*virtual*/ void handleStart();
/*virtual*/ void handleStop();
/*virtual*/ void handleReset();
/*virtual*/ void handleSplitTo(Recording& other);
// returns data for current thread
class ThreadRecorder* getThreadRecorder();
LLCopyOnWritePointer<AccumulatorBuffer<CountAccumulator<F64> > > mCountsFloat;
LLCopyOnWritePointer<AccumulatorBuffer<MeasurementAccumulator<F64> > > mMeasurementsFloat;
LLCopyOnWritePointer<AccumulatorBuffer<CountAccumulator<S64> > > mCounts;
LLCopyOnWritePointer<AccumulatorBuffer<MeasurementAccumulator<S64> > > mMeasurements;
LLCopyOnWritePointer<AccumulatorBuffer<TimerAccumulator> > mStackTimers;
LLTimer mSamplingTimer;
F64 mElapsedSeconds;
};
class LL_COMMON_API PeriodicRecording
: public LLStopWatchControlsMixin<PeriodicRecording>
{
public:
PeriodicRecording(S32 num_periods, EStopWatchState state = STOPPED);
~PeriodicRecording();
void nextPeriod();
S32 getNumPeriods() { return mNumPeriods; }
Recording& getLastRecordingPeriod()
{
return mRecordingPeriods[(mCurPeriod + mNumPeriods - 1) % mNumPeriods];
}
const Recording& getLastRecordingPeriod() const
{
return getPrevRecordingPeriod(1);
}
Recording& getCurRecordingPeriod()
{
return mRecordingPeriods[mCurPeriod];
}
const Recording& getCurRecordingPeriod() const
{
return mRecordingPeriods[mCurPeriod];
}
Recording& getPrevRecordingPeriod(S32 offset)
{
return mRecordingPeriods[(mCurPeriod + mNumPeriods - offset) % mNumPeriods];
}
const Recording& getPrevRecordingPeriod(S32 offset) const
{
return mRecordingPeriods[(mCurPeriod + mNumPeriods - offset) % mNumPeriods];
}
Recording snapshotCurRecordingPeriod() const
{
Recording recording_copy(getCurRecordingPeriod());
recording_copy.stop();
return recording_copy;
}
Recording& getTotalRecording();
template <typename T>
typename T getPeriodMin(const TraceType<CountAccumulator<T> >& stat) const
{
T min_val = std::numeric_limits<T>::max();
for (S32 i = 0; i < mNumPeriods; i++)
{
min_val = llmin(min_val, mRecordingPeriods[i].getSum(stat));
}
return (T)min_val;
}
template <typename T>
F64 getPeriodMinPerSec(const TraceType<CountAccumulator<T> >& stat) const
{
F64 min_val = std::numeric_limits<F64>::max();
for (S32 i = 0; i < mNumPeriods; i++)
{
min_val = llmin(min_val, mRecordingPeriods[i].getPerSec(stat));
}
return min_val;
}
template <typename T>
T getPeriodMax(const TraceType<CountAccumulator<T> >& stat) const
{
T max_val = std::numeric_limits<T>::min();
for (S32 i = 0; i < mNumPeriods; i++)
{
max_val = llmax(max_val, mRecordingPeriods[i].getSum(stat));
}
return max_val;
}
template <typename T>
F64 getPeriodMaxPerSec(const TraceType<CountAccumulator<T> >& stat) const
{
F64 max_val = std::numeric_limits<F64>::min();
for (S32 i = 0; i < mNumPeriods; i++)
{
max_val = llmax(max_val, mRecordingPeriods[i].getPerSec(stat));
}
return max_val;
}
template <typename T>
F64 getPeriodMean(const TraceType<CountAccumulator<T> >& stat) const
{
F64 mean = 0.0;
F64 count = 0;
for (S32 i = 0; i < mNumPeriods; i++)
{
if (mRecordingPeriods[i].getDuration() > 0.f)
{
count++;
mean += mRecordingPeriods[i].getSum(stat);
}
}
mean /= (F64)mNumPeriods;
return mean;
}
template <typename T>
F64 getPeriodMeanPerSec(const TraceType<CountAccumulator<T> >& stat) const
{
F64 mean = 0.0;
F64 count = 0;
for (S32 i = 0; i < mNumPeriods; i++)
{
if (mRecordingPeriods[i].getDuration() > 0.f)
{
count++;
mean += mRecordingPeriods[i].getPerSec(stat);
}
}
mean /= count;
return mean;
}
// implementation for LLStopWatchControlsMixin
/*virtual*/ void start();
/*virtual*/ void stop();
/*virtual*/ void pause();
/*virtual*/ void resume();
/*virtual*/ void restart();
/*virtual*/ void reset();
/*virtual*/ void splitTo(PeriodicRecording& other);
/*virtual*/ void splitFrom(PeriodicRecording& other);
private:
Recording* mRecordingPeriods;
Recording mTotalRecording;
bool mTotalValid;
S32 mNumPeriods,
mCurPeriod;
};
PeriodicRecording& get_frame_recording();
class ExtendableRecording
: public LLStopWatchControlsMixin<ExtendableRecording>
{
void extend();
// implementation for LLStopWatchControlsMixin
/*virtual*/ void start();
/*virtual*/ void stop();
/*virtual*/ void pause();
/*virtual*/ void resume();
/*virtual*/ void restart();
/*virtual*/ void reset();
/*virtual*/ void splitTo(ExtendableRecording& other);
/*virtual*/ void splitFrom(ExtendableRecording& other);
private:
Recording mAcceptedRecording;
Recording mPotentialRecording;
};
}
#endif // LL_LLTRACERECORDING_H
|
