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diff --git a/indra/llcommon/lltracerecording.cpp b/indra/llcommon/lltracerecording.cpp
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+++ b/indra/llcommon/lltracerecording.cpp
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+/**
+ * @file lltracesampler.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * 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
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltrace.h"
+#include "llfasttimer.h"
+#include "lltracerecording.h"
+#include "lltracethreadrecorder.h"
+#include "llthread.h"
+
+namespace LLTrace
+{
+
+
+///////////////////////////////////////////////////////////////////////
+// RecordingBuffers
+///////////////////////////////////////////////////////////////////////
+
+RecordingBuffers::RecordingBuffers()
+{}
+
+void RecordingBuffers::handOffTo(RecordingBuffers& other)
+{
+ other.mCounts.reset(&mCounts);
+ other.mSamples.reset(&mSamples);
+ other.mEvents.reset(&mEvents);
+ other.mStackTimers.reset(&mStackTimers);
+ other.mMemStats.reset(&mMemStats);
+}
+
+void RecordingBuffers::makePrimary()
+{
+ mCounts.makePrimary();
+ mSamples.makePrimary();
+ mEvents.makePrimary();
+ mStackTimers.makePrimary();
+ mMemStats.makePrimary();
+
+ ThreadRecorder* thread_recorder = get_thread_recorder().get();
+ AccumulatorBuffer<TimeBlockAccumulator>& timer_accumulator_buffer = mStackTimers;
+ // update stacktimer parent pointers
+ for (S32 i = 0, end_i = mStackTimers.size(); i < end_i; i++)
+ {
+ TimeBlockTreeNode* tree_node = thread_recorder->getTimeBlockTreeNode(i);
+ if (tree_node)
+ {
+ timer_accumulator_buffer[i].mParent = tree_node->mParent;
+ }
+ }
+}
+
+bool RecordingBuffers::isPrimary() const
+{
+ return mCounts.isPrimary();
+}
+
+void RecordingBuffers::append( const RecordingBuffers& other )
+{
+ mCounts.addSamples(other.mCounts);
+ mSamples.addSamples(other.mSamples);
+ mEvents.addSamples(other.mEvents);
+ mMemStats.addSamples(other.mMemStats);
+ mStackTimers.addSamples(other.mStackTimers);
+}
+
+void RecordingBuffers::merge( const RecordingBuffers& other)
+{
+ mCounts.addSamples(other.mCounts, false);
+ mSamples.addSamples(other.mSamples, false);
+ mEvents.addSamples(other.mEvents, false);
+ mMemStats.addSamples(other.mMemStats, false);
+ // for now, hold out timers from merge, need to be displayed per thread
+ //mStackTimers.addSamples(other.mStackTimers, false);
+}
+
+void RecordingBuffers::reset(RecordingBuffers* other)
+{
+ mCounts.reset(other ? &other->mCounts : NULL);
+ mSamples.reset(other ? &other->mSamples : NULL);
+ mEvents.reset(other ? &other->mEvents : NULL);
+ mStackTimers.reset(other ? &other->mStackTimers : NULL);
+ mMemStats.reset(other ? &other->mMemStats : NULL);
+}
+
+void RecordingBuffers::flush()
+{
+ LLUnitImplicit<F64, LLUnits::Seconds> time_stamp = LLTimer::getTotalSeconds();
+
+ mSamples.flush(time_stamp);
+}
+
+///////////////////////////////////////////////////////////////////////
+// Recording
+///////////////////////////////////////////////////////////////////////
+
+Recording::Recording()
+: mElapsedSeconds(0)
+{
+ mBuffers = new RecordingBuffers();
+}
+
+Recording::Recording( const Recording& other )
+{
+ *this = other;
+}
+
+Recording& Recording::operator = (const Recording& other)
+{
+ // this will allow us to seamlessly start without affecting any data we've acquired from other
+ setPlayState(PAUSED);
+
+ Recording& mutable_other = const_cast<Recording&>(other);
+ mutable_other.update();
+ EPlayState other_play_state = other.getPlayState();
+
+ mBuffers = mutable_other.mBuffers;
+
+ LLStopWatchControlsMixin<Recording>::setPlayState(other_play_state);
+
+ // above call will clear mElapsedSeconds as a side effect, so copy it here
+ mElapsedSeconds = other.mElapsedSeconds;
+ mSamplingTimer = other.mSamplingTimer;
+ return *this;
+}
+
+
+Recording::~Recording()
+{
+ if (isStarted() && LLTrace::get_thread_recorder().notNull())
+ {
+ LLTrace::get_thread_recorder()->deactivate(this);
+ }
+}
+
+void Recording::update()
+{
+ if (isStarted())
+ {
+ mBuffers.write()->flush();
+ LLTrace::get_thread_recorder()->bringUpToDate(this);
+ mSamplingTimer.reset();
+ }
+}
+
+void Recording::handleReset()
+{
+ mBuffers.write()->reset();
+
+ mElapsedSeconds = 0.0;
+ mSamplingTimer.reset();
+}
+
+void Recording::handleStart()
+{
+ mSamplingTimer.reset();
+ LLTrace::get_thread_recorder()->activate(this);
+}
+
+void Recording::handleStop()
+{
+ mElapsedSeconds += mSamplingTimer.getElapsedTimeF64();
+ mBuffers.write()->flush();
+ LLTrace::get_thread_recorder()->deactivate(this);
+}
+
+void Recording::handleSplitTo(Recording& other)
+{
+ mBuffers.write()->handOffTo(*other.mBuffers.write());
+}
+
+void Recording::appendRecording( const Recording& other )
+{
+ update();
+ mBuffers.write()->append(*other.mBuffers);
+ mElapsedSeconds += other.mElapsedSeconds;
+}
+
+void Recording::mergeRecording( const Recording& other)
+{
+ update();
+ mBuffers.write()->merge(*other.mBuffers);
+}
+
+LLUnit<F64, LLUnits::Seconds> Recording::getSum(const TraceType<TimeBlockAccumulator>& stat)
+{
+ const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+ return (F64)(accumulator.mTotalTimeCounter - accumulator.mStartTotalTimeCounter)
+ / (F64)LLTrace::TimeBlock::countsPerSecond();
+}
+
+LLUnit<F64, LLUnits::Seconds> Recording::getSum(const TraceType<TimeBlockAccumulator::SelfTimeFacet>& stat)
+{
+ const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+ return (F64)(accumulator.mSelfTimeCounter) / (F64)LLTrace::TimeBlock::countsPerSecond();
+}
+
+
+U32 Recording::getSum(const TraceType<TimeBlockAccumulator::CallCountFacet>& stat)
+{
+ return mBuffers->mStackTimers[stat.getIndex()].mCalls;
+}
+
+LLUnit<F64, LLUnits::Seconds> Recording::getPerSec(const TraceType<TimeBlockAccumulator>& stat)
+{
+ const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+
+ return (F64)(accumulator.mTotalTimeCounter - accumulator.mStartTotalTimeCounter)
+ / ((F64)LLTrace::TimeBlock::countsPerSecond() * mElapsedSeconds.value());
+}
+
+LLUnit<F64, LLUnits::Seconds> Recording::getPerSec(const TraceType<TimeBlockAccumulator::SelfTimeFacet>& stat)
+{
+ const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
+
+ return (F64)(accumulator.mSelfTimeCounter)
+ / ((F64)LLTrace::TimeBlock::countsPerSecond() * mElapsedSeconds.value());
+}
+
+F32 Recording::getPerSec(const TraceType<TimeBlockAccumulator::CallCountFacet>& stat)
+{
+ return (F32)mBuffers->mStackTimers[stat.getIndex()].mCalls / mElapsedSeconds.value();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getMin(const TraceType<MemStatAccumulator>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mSize.getMin();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getMean(const TraceType<MemStatAccumulator>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mSize.getMean();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getMax(const TraceType<MemStatAccumulator>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mSize.getMax();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getStandardDeviation(const TraceType<MemStatAccumulator>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mSize.getStandardDeviation();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getLastValue(const TraceType<MemStatAccumulator>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mSize.getLastValue();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getMin(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mChildSize.getMin();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getMean(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mChildSize.getMean();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getMax(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mChildSize.getMax();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getStandardDeviation(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mChildSize.getStandardDeviation();
+}
+
+LLUnit<F64, LLUnits::Bytes> Recording::getLastValue(const TraceType<MemStatAccumulator::ChildMemFacet>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mChildSize.getLastValue();
+}
+
+U32 Recording::getSum(const TraceType<MemStatAccumulator::AllocationCountFacet>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mAllocatedCount;
+}
+
+U32 Recording::getSum(const TraceType<MemStatAccumulator::DeallocationCountFacet>& stat)
+{
+ return mBuffers->mMemStats[stat.getIndex()].mAllocatedCount;
+}
+
+
+F64 Recording::getSum( const TraceType<CountAccumulator>& stat )
+{
+ return mBuffers->mCounts[stat.getIndex()].getSum();
+}
+
+F64 Recording::getSum( const TraceType<EventAccumulator>& stat )
+{
+ return (F64)mBuffers->mEvents[stat.getIndex()].getSum();
+}
+
+F64 Recording::getPerSec( const TraceType<CountAccumulator>& stat )
+{
+ F64 sum = mBuffers->mCounts[stat.getIndex()].getSum();
+ return (sum != 0.0)
+ ? (sum / mElapsedSeconds.value())
+ : 0.0;
+}
+
+U32 Recording::getSampleCount( const TraceType<CountAccumulator>& stat )
+{
+ return mBuffers->mCounts[stat.getIndex()].getSampleCount();
+}
+
+F64 Recording::getMin( const TraceType<SampleAccumulator>& stat )
+{
+ return mBuffers->mSamples[stat.getIndex()].getMin();
+}
+
+F64 Recording::getMax( const TraceType<SampleAccumulator>& stat )
+{
+ return mBuffers->mSamples[stat.getIndex()].getMax();
+}
+
+F64 Recording::getMean( const TraceType<SampleAccumulator>& stat )
+{
+ return mBuffers->mSamples[stat.getIndex()].getMean();
+}
+
+F64 Recording::getStandardDeviation( const TraceType<SampleAccumulator>& stat )
+{
+ return mBuffers->mSamples[stat.getIndex()].getStandardDeviation();
+}
+
+F64 Recording::getLastValue( const TraceType<SampleAccumulator>& stat )
+{
+ return mBuffers->mSamples[stat.getIndex()].getLastValue();
+}
+
+U32 Recording::getSampleCount( const TraceType<SampleAccumulator>& stat )
+{
+ return mBuffers->mSamples[stat.getIndex()].getSampleCount();
+}
+
+F64 Recording::getMin( const TraceType<EventAccumulator>& stat )
+{
+ return mBuffers->mEvents[stat.getIndex()].getMin();
+}
+
+F64 Recording::getMax( const TraceType<EventAccumulator>& stat )
+{
+ return mBuffers->mEvents[stat.getIndex()].getMax();
+}
+
+F64 Recording::getMean( const TraceType<EventAccumulator>& stat )
+{
+ return mBuffers->mEvents[stat.getIndex()].getMean();
+}
+
+F64 Recording::getStandardDeviation( const TraceType<EventAccumulator>& stat )
+{
+ return mBuffers->mEvents[stat.getIndex()].getStandardDeviation();
+}
+
+F64 Recording::getLastValue( const TraceType<EventAccumulator>& stat )
+{
+ return mBuffers->mEvents[stat.getIndex()].getLastValue();
+}
+
+U32 Recording::getSampleCount( const TraceType<EventAccumulator>& stat )
+{
+ return mBuffers->mEvents[stat.getIndex()].getSampleCount();
+}
+
+///////////////////////////////////////////////////////////////////////
+// PeriodicRecording
+///////////////////////////////////////////////////////////////////////
+
+PeriodicRecording::PeriodicRecording( U32 num_periods, EPlayState state)
+: mAutoResize(num_periods == 0),
+ mCurPeriod(0),
+ mNumPeriods(0),
+ mRecordingPeriods(num_periods ? num_periods : 1)
+{
+ setPlayState(state);
+}
+
+void PeriodicRecording::nextPeriod()
+{
+ if (mAutoResize)
+ {
+ mRecordingPeriods.push_back(Recording());
+ }
+
+ Recording& old_recording = getCurRecording();
+ mCurPeriod = (mCurPeriod + 1) % mRecordingPeriods.size();
+ old_recording.splitTo(getCurRecording());
+
+ mNumPeriods = llmin(mRecordingPeriods.size(), mNumPeriods + 1);
+}
+
+void PeriodicRecording::appendRecording(Recording& recording)
+{
+ getCurRecording().appendRecording(recording);
+ nextPeriod();
+}
+
+
+void PeriodicRecording::appendPeriodicRecording( PeriodicRecording& other )
+{
+ if (other.mRecordingPeriods.empty()) return;
+
+ getCurRecording().update();
+ other.getCurRecording().update();
+
+ const U32 other_recording_slots = other.mRecordingPeriods.size();
+ const U32 other_num_recordings = other.getNumRecordedPeriods();
+ const U32 other_current_recording_index = other.mCurPeriod;
+ const U32 other_oldest_recording_index = (other_current_recording_index + other_recording_slots - other_num_recordings + 1) % other_recording_slots;
+
+ // append first recording into our current slot
+ getCurRecording().appendRecording(other.mRecordingPeriods[other_oldest_recording_index]);
+
+ // from now on, add new recordings for everything after the first
+ U32 other_index = (other_oldest_recording_index + 1) % other_recording_slots;
+
+ if (mAutoResize)
+ {
+ // append first recording into our current slot
+ getCurRecording().appendRecording(other.mRecordingPeriods[other_oldest_recording_index]);
+
+ // push back recordings for everything in the middle
+ U32 other_index = (other_oldest_recording_index + 1) % other_recording_slots;
+ while (other_index != other_current_recording_index)
+ {
+ mRecordingPeriods.push_back(other.mRecordingPeriods[other_index]);
+ other_index = (other_index + 1) % other_recording_slots;
+ }
+
+ // add final recording, if it wasn't already added as the first
+ if (other_num_recordings > 1)
+ {
+ mRecordingPeriods.push_back(other.mRecordingPeriods[other_current_recording_index]);
+ }
+
+ mCurPeriod = mRecordingPeriods.size() - 1;
+ mNumPeriods = mRecordingPeriods.size();
+ }
+ else
+ {
+ size_t num_to_copy = llmin( mRecordingPeriods.size(), (size_t)other_num_recordings);
+
+ std::vector<Recording>::iterator src_it = other.mRecordingPeriods.begin() + other_index ;
+ std::vector<Recording>::iterator dest_it = mRecordingPeriods.begin() + mCurPeriod;
+
+ // already consumed the first recording from other, so start counting at 1
+ for(size_t i = 1; i < num_to_copy; i++)
+ {
+ *dest_it = *src_it;
+
+ if (++src_it == other.mRecordingPeriods.end())
+ {
+ src_it = other.mRecordingPeriods.begin();
+ }
+
+ if (++dest_it == mRecordingPeriods.end())
+ {
+ dest_it = mRecordingPeriods.begin();
+ }
+ }
+
+ // want argument to % to be positive, otherwise result could be negative and thus out of bounds
+ llassert(num_to_copy >= 1);
+ // advance to last recording period copied, and make that our current period
+ mCurPeriod = (mCurPeriod + num_to_copy - 1) % mRecordingPeriods.size();
+ mNumPeriods = llmin(mRecordingPeriods.size(), mNumPeriods + num_to_copy - 1);
+ }
+
+ // end with fresh period, otherwise next appendPeriodicRecording() will merge the first
+ // recording period with the last one appended here
+ nextPeriod();
+ getCurRecording().setPlayState(getPlayState());
+}
+
+LLUnit<F64, LLUnits::Seconds> PeriodicRecording::getDuration() const
+{
+ LLUnit<F64, LLUnits::Seconds> duration;
+ size_t num_periods = mRecordingPeriods.size();
+ for (size_t i = 1; i <= num_periods; i++)
+ {
+ size_t index = (mCurPeriod + num_periods - i) % num_periods;
+ duration += mRecordingPeriods[index].getDuration();
+ }
+ return duration;
+}
+
+
+LLTrace::Recording PeriodicRecording::snapshotCurRecording() const
+{
+ Recording recording_copy(getCurRecording());
+ recording_copy.stop();
+ return recording_copy;
+}
+
+
+Recording& PeriodicRecording::getLastRecording()
+{
+ return getPrevRecording(1);
+}
+
+const Recording& PeriodicRecording::getLastRecording() const
+{
+ return getPrevRecording(1);
+}
+
+Recording& PeriodicRecording::getCurRecording()
+{
+ return mRecordingPeriods[mCurPeriod];
+}
+
+const Recording& PeriodicRecording::getCurRecording() const
+{
+ return mRecordingPeriods[mCurPeriod];
+}
+
+Recording& PeriodicRecording::getPrevRecording( U32 offset )
+{
+ U32 num_periods = mRecordingPeriods.size();
+ offset = llclamp(offset, 0u, num_periods - 1);
+ return mRecordingPeriods[(mCurPeriod + num_periods - offset) % num_periods];
+}
+
+const Recording& PeriodicRecording::getPrevRecording( U32 offset ) const
+{
+ U32 num_periods = mRecordingPeriods.size();
+ offset = llclamp(offset, 0u, num_periods - 1);
+ return mRecordingPeriods[(mCurPeriod + num_periods - offset) % num_periods];
+}
+
+void PeriodicRecording::handleStart()
+{
+ getCurRecording().start();
+}
+
+void PeriodicRecording::handleStop()
+{
+ getCurRecording().pause();
+}
+
+void PeriodicRecording::handleReset()
+{
+ if (mAutoResize)
+ {
+ mRecordingPeriods.clear();
+ mRecordingPeriods.push_back(Recording());
+ }
+ else
+ {
+ for (std::vector<Recording>::iterator it = mRecordingPeriods.begin(), end_it = mRecordingPeriods.end();
+ it != end_it;
+ ++it)
+ {
+ it->reset();
+ }
+ }
+ mCurPeriod = 0;
+ getCurRecording().setPlayState(getPlayState());
+}
+
+void PeriodicRecording::handleSplitTo(PeriodicRecording& other)
+{
+ getCurRecording().splitTo(other.getCurRecording());
+}
+
+
+F64 PeriodicRecording::getPeriodMean( const TraceType<EventAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+ size_t total_periods = mRecordingPeriods.size();
+ num_periods = llmin(num_periods, isStarted() ? total_periods - 1 : total_periods);
+
+ F64 mean = 0;
+ if (num_periods <= 0) { return mean; }
+
+ S32 total_sample_count = 0;
+
+ for (S32 i = 1; i <= num_periods; i++)
+ {
+ S32 index = (mCurPeriod + total_periods - i) % total_periods;
+ if (mRecordingPeriods[index].getDuration() > 0.f)
+ {
+ S32 period_sample_count = mRecordingPeriods[index].getSampleCount(stat);
+ mean += mRecordingPeriods[index].getMean(stat) * period_sample_count;
+ total_sample_count += period_sample_count;
+ }
+ }
+
+ if (total_sample_count)
+ {
+ mean = mean / total_sample_count;
+ }
+ return mean;
+}
+
+F64 PeriodicRecording::getPeriodMin( const TraceType<EventAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+ size_t total_periods = mRecordingPeriods.size();
+ num_periods = llmin(num_periods, isStarted() ? total_periods - 1 : total_periods);
+
+ F64 min_val = std::numeric_limits<F64>::max();
+ for (S32 i = 1; i <= num_periods; i++)
+ {
+ S32 index = (mCurPeriod + total_periods - i) % total_periods;
+ min_val = llmin(min_val, mRecordingPeriods[index].getMin(stat));
+ }
+ return min_val;
+}
+
+F64 PeriodicRecording::getPeriodMax( const TraceType<EventAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+ size_t total_periods = mRecordingPeriods.size();
+ num_periods = llmin(num_periods, isStarted() ? total_periods - 1 : total_periods);
+
+ F64 max_val = std::numeric_limits<F64>::min();
+ for (S32 i = 1; i <= num_periods; i++)
+ {
+ S32 index = (mCurPeriod + total_periods - i) % total_periods;
+ max_val = llmax(max_val, mRecordingPeriods[index].getMax(stat));
+ }
+ return max_val;
+}
+
+F64 PeriodicRecording::getPeriodMin( const TraceType<SampleAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+ size_t total_periods = mRecordingPeriods.size();
+ num_periods = llmin(num_periods, isStarted() ? total_periods - 1 : total_periods);
+
+ F64 min_val = std::numeric_limits<F64>::max();
+ for (S32 i = 1; i <= num_periods; i++)
+ {
+ S32 index = (mCurPeriod + total_periods - i) % total_periods;
+ min_val = llmin(min_val, mRecordingPeriods[index].getMin(stat));
+ }
+ return min_val;
+}
+
+F64 PeriodicRecording::getPeriodMax(const TraceType<SampleAccumulator>& stat, size_t num_periods /*= U32_MAX*/)
+{
+ size_t total_periods = mRecordingPeriods.size();
+ num_periods = llmin(num_periods, isStarted() ? total_periods - 1 : total_periods);
+
+ F64 max_val = std::numeric_limits<F64>::min();
+ for (S32 i = 1; i <= num_periods; i++)
+ {
+ S32 index = (mCurPeriod + total_periods - i) % total_periods;
+ max_val = llmax(max_val, mRecordingPeriods[index].getMax(stat));
+ }
+ return max_val;
+}
+
+
+F64 PeriodicRecording::getPeriodMean( const TraceType<SampleAccumulator>& stat, size_t num_periods /*= U32_MAX*/ )
+{
+ size_t total_periods = mRecordingPeriods.size();
+ num_periods = llmin(num_periods, isStarted() ? total_periods - 1 : total_periods);
+
+ LLUnit<F64, LLUnits::Seconds> total_duration = 0.f;
+
+ F64 mean = 0;
+ if (num_periods <= 0) { return mean; }
+
+ for (S32 i = 1; i <= num_periods; i++)
+ {
+ S32 index = (mCurPeriod + total_periods - i) % total_periods;
+ if (mRecordingPeriods[index].getDuration() > 0.f)
+ {
+ LLUnit<F64, LLUnits::Seconds> recording_duration = mRecordingPeriods[index].getDuration();
+ mean += mRecordingPeriods[index].getMean(stat) * recording_duration.value();
+ total_duration += recording_duration;
+ }
+ }
+
+ if (total_duration.value())
+ {
+ mean = mean / total_duration;
+ }
+ return mean;
+}
+
+
+
+///////////////////////////////////////////////////////////////////////
+// ExtendableRecording
+///////////////////////////////////////////////////////////////////////
+
+void ExtendableRecording::extend()
+{
+ // stop recording to get latest data
+ mPotentialRecording.update();
+ // push the data back to accepted recording
+ mAcceptedRecording.appendRecording(mPotentialRecording);
+ // flush data, so we can start from scratch
+ mPotentialRecording.reset();
+}
+
+void ExtendableRecording::handleStart()
+{
+ mPotentialRecording.start();
+}
+
+void ExtendableRecording::handleStop()
+{
+ mPotentialRecording.pause();
+}
+
+void ExtendableRecording::handleReset()
+{
+ mAcceptedRecording.reset();
+ mPotentialRecording.reset();
+}
+
+void ExtendableRecording::handleSplitTo(ExtendableRecording& other)
+{
+ mPotentialRecording.splitTo(other.mPotentialRecording);
+}
+
+
+///////////////////////////////////////////////////////////////////////
+// ExtendablePeriodicRecording
+///////////////////////////////////////////////////////////////////////
+
+
+ExtendablePeriodicRecording::ExtendablePeriodicRecording()
+: mAcceptedRecording(0),
+ mPotentialRecording(0)
+{}
+
+void ExtendablePeriodicRecording::extend()
+{
+ // push the data back to accepted recording
+ mAcceptedRecording.appendPeriodicRecording(mPotentialRecording);
+ // flush data, so we can start from scratch
+ mPotentialRecording.reset();
+}
+
+
+void ExtendablePeriodicRecording::handleStart()
+{
+ mPotentialRecording.start();
+}
+
+void ExtendablePeriodicRecording::handleStop()
+{
+ mPotentialRecording.pause();
+}
+
+void ExtendablePeriodicRecording::handleReset()
+{
+ mAcceptedRecording.reset();
+ mPotentialRecording.reset();
+}
+
+void ExtendablePeriodicRecording::handleSplitTo(ExtendablePeriodicRecording& other)
+{
+ mPotentialRecording.splitTo(other.mPotentialRecording);
+}
+
+
+PeriodicRecording& get_frame_recording()
+{
+ static LLThreadLocalPointer<PeriodicRecording> sRecording(new PeriodicRecording(1000, PeriodicRecording::STARTED));
+ return *sRecording;
+}
+
+}
+
+void LLStopWatchControlsMixinCommon::start()
+{
+ switch (mPlayState)
+ {
+ case STOPPED:
+ handleReset();
+ handleStart();
+ break;
+ case PAUSED:
+ handleStart();
+ break;
+ case STARTED:
+ handleReset();
+ break;
+ default:
+ llassert(false);
+ break;
+ }
+ mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::stop()
+{
+ switch (mPlayState)
+ {
+ case STOPPED:
+ break;
+ case PAUSED:
+ break;
+ case STARTED:
+ handleStop();
+ break;
+ default:
+ llassert(false);
+ break;
+ }
+ mPlayState = STOPPED;
+}
+
+void LLStopWatchControlsMixinCommon::pause()
+{
+ switch (mPlayState)
+ {
+ case STOPPED:
+ break;
+ case PAUSED:
+ break;
+ case STARTED:
+ handleStop();
+ break;
+ default:
+ llassert(false);
+ break;
+ }
+ mPlayState = PAUSED;
+}
+
+void LLStopWatchControlsMixinCommon::resume()
+{
+ switch (mPlayState)
+ {
+ case STOPPED:
+ handleStart();
+ break;
+ case PAUSED:
+ handleStart();
+ break;
+ case STARTED:
+ break;
+ default:
+ llassert(false);
+ break;
+ }
+ mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::restart()
+{
+ switch (mPlayState)
+ {
+ case STOPPED:
+ handleReset();
+ handleStart();
+ break;
+ case PAUSED:
+ handleReset();
+ handleStart();
+ break;
+ case STARTED:
+ handleReset();
+ break;
+ default:
+ llassert(false);
+ break;
+ }
+ mPlayState = STARTED;
+}
+
+void LLStopWatchControlsMixinCommon::reset()
+{
+ handleReset();
+}
+
+void LLStopWatchControlsMixinCommon::setPlayState( EPlayState state )
+{
+ switch(state)
+ {
+ case STOPPED:
+ stop();
+ break;
+ case PAUSED:
+ pause();
+ break;
+ case STARTED:
+ start();
+ break;
+ default:
+ llassert(false);
+ break;
+ }
+
+ mPlayState = state;
+}