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Diffstat (limited to 'indra/llcommon/llfasttimer_class.cpp')
| -rw-r--r-- | indra/llcommon/llfasttimer_class.cpp | 751 |
1 files changed, 751 insertions, 0 deletions
diff --git a/indra/llcommon/llfasttimer_class.cpp b/indra/llcommon/llfasttimer_class.cpp new file mode 100644 index 0000000000..6dbd90f9fa --- /dev/null +++ b/indra/llcommon/llfasttimer_class.cpp @@ -0,0 +1,751 @@ +/** + * @file llfasttimer_class.cpp + * @brief Implementation of the fast timer. + * + * $LicenseInfo:firstyear=2004&license=viewergpl$ + * + * Copyright (c) 2004-2007, Linden Research, Inc. + * + * Second Life Viewer Source Code + * The source code in this file ("Source Code") is provided by Linden Lab + * to you under the terms of the GNU General Public License, version 2.0 + * ("GPL"), unless you have obtained a separate licensing agreement + * ("Other License"), formally executed by you and Linden Lab. Terms of + * the GPL can be found in doc/GPL-license.txt in this distribution, or + * online at http://secondlife.com/developers/opensource/gplv2 + * + * There are special exceptions to the terms and conditions of the GPL as + * it is applied to this Source Code. View the full text of the exception + * in the file doc/FLOSS-exception.txt in this software distribution, or + * online at http://secondlife.com/developers/opensource/flossexception + * + * By copying, modifying or distributing this software, you acknowledge + * that you have read and understood your obligations described above, + * and agree to abide by those obligations. + * + * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS."LINDEN LAB MAKES NO + * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, + * COMPLETENESS OR PERFORMANCE. + * $/LicenseInfo$ + */ +#include "linden_common.h" + +#include "llfasttimer.h" + +#include "llmemory.h" +#include "llprocessor.h" +#include "llsingleton.h" +#include "lltreeiterators.h" +#include "llsdserialize.h" + +#include <boost/bind.hpp> + +#if LL_WINDOWS +#elif LL_LINUX || LL_SOLARIS +#include <sys/time.h> +#include <sched.h> +#elif LL_DARWIN +#include <sys/time.h> +#include "lltimer.h" // get_clock_count() +#else +#error "architecture not supported" +#endif + +////////////////////////////////////////////////////////////////////////////// +// statics + +S32 LLFastTimer::sCurFrameIndex = -1; +S32 LLFastTimer::sLastFrameIndex = -1; +U64 LLFastTimer::sLastFrameTime = get_cpu_clock_count_64(); +bool LLFastTimer::sPauseHistory = 0; +bool LLFastTimer::sResetHistory = 0; +LLFastTimer::CurTimerData LLFastTimer::sCurTimerData; +BOOL LLFastTimer::sLog = FALSE; +BOOL LLFastTimer::sMetricLog = FALSE; +LLMutex* LLFastTimer::sLogLock = NULL; +std::queue<LLSD> LLFastTimer::sLogQueue; + +#if LL_LINUX || LL_SOLARIS +U64 LLFastTimer::sClockResolution = 1000000000; // Nanosecond resolution +#else +U64 LLFastTimer::sClockResolution = 1000000; // Microsecond resolution +#endif + +std::vector<LLFastTimer::FrameState>* LLFastTimer::sTimerInfos = NULL; +U64 LLFastTimer::sTimerCycles = 0; +U32 LLFastTimer::sTimerCalls = 0; + + +// FIXME: move these declarations to the relevant modules + +// helper functions +typedef LLTreeDFSPostIter<LLFastTimer::NamedTimer, LLFastTimer::NamedTimer::child_const_iter> timer_tree_bottom_up_iterator_t; + +static timer_tree_bottom_up_iterator_t begin_timer_tree_bottom_up(LLFastTimer::NamedTimer& id) +{ + return timer_tree_bottom_up_iterator_t(&id, + boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::beginChildren), _1), + boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::endChildren), _1)); +} + +static timer_tree_bottom_up_iterator_t end_timer_tree_bottom_up() +{ + return timer_tree_bottom_up_iterator_t(); +} + +typedef LLTreeDFSIter<LLFastTimer::NamedTimer, LLFastTimer::NamedTimer::child_const_iter> timer_tree_dfs_iterator_t; + + +static timer_tree_dfs_iterator_t begin_timer_tree(LLFastTimer::NamedTimer& id) +{ + return timer_tree_dfs_iterator_t(&id, + boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::beginChildren), _1), + boost::bind(boost::mem_fn(&LLFastTimer::NamedTimer::endChildren), _1)); +} + +static timer_tree_dfs_iterator_t end_timer_tree() +{ + return timer_tree_dfs_iterator_t(); +} + + + +// factory class that creates NamedTimers via static DeclareTimer objects +class NamedTimerFactory : public LLSingleton<NamedTimerFactory> +{ +public: + NamedTimerFactory() + {} + + /*virtual */ void initSingleton() + { + mTimerRoot = new LLFastTimer::NamedTimer("root"); + + mActiveTimerRoot = new LLFastTimer::NamedTimer("Frame"); + mActiveTimerRoot->setCollapsed(false); + + mRootFrameState = new LLFastTimer::FrameState(mActiveTimerRoot); + mRootFrameState->mParent = &mTimerRoot->getFrameState(); + mActiveTimerRoot->setParent(mTimerRoot); + + mAppTimer = new LLFastTimer(mRootFrameState); + } + + ~NamedTimerFactory() + { + std::for_each(mTimers.begin(), mTimers.end(), DeletePairedPointer()); + + delete mAppTimer; + delete mActiveTimerRoot; + delete mTimerRoot; + delete mRootFrameState; + } + + LLFastTimer::NamedTimer& createNamedTimer(const std::string& name) + { + timer_map_t::iterator found_it = mTimers.find(name); + if (found_it != mTimers.end()) + { + return *found_it->second; + } + + LLFastTimer::NamedTimer* timer = new LLFastTimer::NamedTimer(name); + timer->setParent(mTimerRoot); + mTimers.insert(std::make_pair(name, timer)); + + return *timer; + } + + LLFastTimer::NamedTimer* getTimerByName(const std::string& name) + { + timer_map_t::iterator found_it = mTimers.find(name); + if (found_it != mTimers.end()) + { + return found_it->second; + } + return NULL; + } + + LLFastTimer::NamedTimer* getActiveRootTimer() { return mActiveTimerRoot; } + LLFastTimer::NamedTimer* getRootTimer() { return mTimerRoot; } + const LLFastTimer* getAppTimer() { return mAppTimer; } + LLFastTimer::FrameState& getRootFrameState() { return *mRootFrameState; } + + typedef std::map<std::string, LLFastTimer::NamedTimer*> timer_map_t; + timer_map_t::iterator beginTimers() { return mTimers.begin(); } + timer_map_t::iterator endTimers() { return mTimers.end(); } + S32 timerCount() { return mTimers.size(); } + +private: + timer_map_t mTimers; + + LLFastTimer::NamedTimer* mActiveTimerRoot; + LLFastTimer::NamedTimer* mTimerRoot; + LLFastTimer* mAppTimer; + LLFastTimer::FrameState* mRootFrameState; +}; + +void update_cached_pointers_if_changed() +{ + // detect when elements have moved and update cached pointers + static LLFastTimer::FrameState* sFirstTimerAddress = NULL; + if (&*(LLFastTimer::getFrameStateList().begin()) != sFirstTimerAddress) + { + LLFastTimer::DeclareTimer::updateCachedPointers(); + } + sFirstTimerAddress = &*(LLFastTimer::getFrameStateList().begin()); +} + +LLFastTimer::DeclareTimer::DeclareTimer(const std::string& name, bool open ) +: mTimer(NamedTimerFactory::instance().createNamedTimer(name)) +{ + mTimer.setCollapsed(!open); + mFrameState = &mTimer.getFrameState(); + update_cached_pointers_if_changed(); +} + +LLFastTimer::DeclareTimer::DeclareTimer(const std::string& name) +: mTimer(NamedTimerFactory::instance().createNamedTimer(name)) +{ + mFrameState = &mTimer.getFrameState(); + update_cached_pointers_if_changed(); +} + +// static +void LLFastTimer::DeclareTimer::updateCachedPointers() +{ + // propagate frame state pointers to timer declarations + for (DeclareTimer::instance_iter it = DeclareTimer::beginInstances(); + it != DeclareTimer::endInstances(); + ++it) + { + // update cached pointer + it->mFrameState = &it->mTimer.getFrameState(); + } +} + +//static +#if LL_LINUX || LL_SOLARIS || ( LL_DARWIN && !(defined(__i386__) || defined(__amd64__)) ) +U64 LLFastTimer::countsPerSecond() +{ + return sClockResolution; +} +#else // windows or x86-mac +U64 LLFastTimer::countsPerSecond() +{ + static U64 sCPUClockFrequency = U64(CProcessor().GetCPUFrequency(50)); + + // we drop the low-order byte in out timers, so report a lower frequency + return sCPUClockFrequency >> 8; +} +#endif + +LLFastTimer::FrameState::FrameState(LLFastTimer::NamedTimer* timerp) +: mActiveCount(0), + mCalls(0), + mSelfTimeCounter(0), + mParent(NULL), + mLastCaller(NULL), + mMoveUpTree(false), + mTimer(timerp) +{} + + +LLFastTimer::NamedTimer::NamedTimer(const std::string& name) +: mName(name), + mCollapsed(true), + mParent(NULL), + mTotalTimeCounter(0), + mCountAverage(0), + mCallAverage(0), + mNeedsSorting(false) +{ + info_list_t& frame_state_list = getFrameStateList(); + mFrameStateIndex = frame_state_list.size(); + getFrameStateList().push_back(FrameState(this)); + + mCountHistory = new U32[HISTORY_NUM]; + memset(mCountHistory, 0, sizeof(U32) * HISTORY_NUM); + mCallHistory = new U32[HISTORY_NUM]; + memset(mCallHistory, 0, sizeof(U32) * HISTORY_NUM); +} + +LLFastTimer::NamedTimer::~NamedTimer() +{ + delete[] mCountHistory; + delete[] mCallHistory; +} + +std::string LLFastTimer::NamedTimer::getToolTip(S32 history_idx) +{ + if (history_idx < 0) + { + // by default, show average number of calls + return llformat("%s (%d calls)", getName().c_str(), (S32)getCallAverage()); + } + else + { + return llformat("%s (%d calls)", getName().c_str(), (S32)getHistoricalCalls(history_idx)); + } +} + +void LLFastTimer::NamedTimer::setParent(NamedTimer* parent) +{ + llassert_always(parent != this); + llassert_always(parent != NULL); + + if (mParent) + { + // subtract our accumulated from previous parent + for (S32 i = 0; i < HISTORY_NUM; i++) + { + mParent->mCountHistory[i] -= mCountHistory[i]; + } + + // subtract average timing from previous parent + mParent->mCountAverage -= mCountAverage; + + std::vector<NamedTimer*>& children = mParent->getChildren(); + std::vector<NamedTimer*>::iterator found_it = std::find(children.begin(), children.end(), this); + if (found_it != children.end()) + { + children.erase(found_it); + } + } + + mParent = parent; + if (parent) + { + getFrameState().mParent = &parent->getFrameState(); + parent->getChildren().push_back(this); + parent->mNeedsSorting = true; + } +} + +S32 LLFastTimer::NamedTimer::getDepth() +{ + S32 depth = 0; + NamedTimer* timerp = mParent; + while(timerp) + { + depth++; + timerp = timerp->mParent; + } + return depth; +} + +// static +void LLFastTimer::NamedTimer::processTimes() +{ + if (sCurFrameIndex < 0) return; + + buildHierarchy(); + accumulateTimings(); +} + +// sort timer info structs by depth first traversal order +struct SortTimersDFS +{ + bool operator()(const LLFastTimer::FrameState& i1, const LLFastTimer::FrameState& i2) + { + return i1.mTimer->getFrameStateIndex() < i2.mTimer->getFrameStateIndex(); + } +}; + +// sort child timers by name +struct SortTimerByName +{ + bool operator()(const LLFastTimer::NamedTimer* i1, const LLFastTimer::NamedTimer* i2) + { + return i1->getName() < i2->getName(); + } +}; + +//static +void LLFastTimer::NamedTimer::buildHierarchy() +{ + if (sCurFrameIndex < 0 ) return; + + // set up initial tree + for (instance_iter it = NamedTimer::beginInstances(); + it != endInstances(); + ++it) + { + NamedTimer& timer = *it; + if (&timer == NamedTimerFactory::instance().getRootTimer()) continue; + + // bootstrap tree construction by attaching to last timer to be on stack + // when this timer was called + if (timer.getFrameState().mLastCaller && timer.mParent == NamedTimerFactory::instance().getRootTimer()) + { + timer.setParent(timer.getFrameState().mLastCaller->mTimer); + // no need to push up tree on first use, flag can be set spuriously + timer.getFrameState().mMoveUpTree = false; + } + } + + // bump timers up tree if they've been flagged as being in the wrong place + // do this in a bottom up order to promote descendants first before promoting ancestors + // this preserves partial order derived from current frame's observations + for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(*NamedTimerFactory::instance().getRootTimer()); + it != end_timer_tree_bottom_up(); + ++it) + { + NamedTimer* timerp = *it; + // skip root timer + if (timerp == NamedTimerFactory::instance().getRootTimer()) continue; + + if (timerp->getFrameState().mMoveUpTree) + { + // since ancestors have already been visited, reparenting won't affect tree traversal + //step up tree, bringing our descendants with us + //llinfos << "Moving " << timerp->getName() << " from child of " << timerp->getParent()->getName() << + // " to child of " << timerp->getParent()->getParent()->getName() << llendl; + timerp->setParent(timerp->getParent()->getParent()); + timerp->getFrameState().mMoveUpTree = false; + + // don't bubble up any ancestors until descendants are done bubbling up + it.skipAncestors(); + } + } + + // sort timers by time last called, so call graph makes sense + for(timer_tree_dfs_iterator_t it = begin_timer_tree(*NamedTimerFactory::instance().getRootTimer()); + it != end_timer_tree(); + ++it) + { + NamedTimer* timerp = (*it); + if (timerp->mNeedsSorting) + { + std::sort(timerp->getChildren().begin(), timerp->getChildren().end(), SortTimerByName()); + } + timerp->mNeedsSorting = false; + } +} + +//static +void LLFastTimer::NamedTimer::accumulateTimings() +{ + U32 cur_time = get_cpu_clock_count_32(); + + // walk up stack of active timers and accumulate current time while leaving timing structures active + LLFastTimer* cur_timer = sCurTimerData.mCurTimer; + // root defined by parent pointing to self + CurTimerData* cur_data = &sCurTimerData; + while(cur_timer->mLastTimerData.mCurTimer != cur_timer) + { + U32 cumulative_time_delta = cur_time - cur_timer->mStartTime; + U32 self_time_delta = cumulative_time_delta - cur_data->mChildTime; + cur_data->mChildTime = 0; + cur_timer->mFrameState->mSelfTimeCounter += self_time_delta; + cur_timer->mStartTime = cur_time; + + cur_data = &cur_timer->mLastTimerData; + cur_data->mChildTime += cumulative_time_delta; + + cur_timer = cur_timer->mLastTimerData.mCurTimer; + } + + // traverse tree in DFS post order, or bottom up + for(timer_tree_bottom_up_iterator_t it = begin_timer_tree_bottom_up(*NamedTimerFactory::instance().getActiveRootTimer()); + it != end_timer_tree_bottom_up(); + ++it) + { + NamedTimer* timerp = (*it); + timerp->mTotalTimeCounter = timerp->getFrameState().mSelfTimeCounter; + for (child_const_iter child_it = timerp->beginChildren(); child_it != timerp->endChildren(); ++child_it) + { + timerp->mTotalTimeCounter += (*child_it)->mTotalTimeCounter; + } + + S32 cur_frame = sCurFrameIndex; + if (cur_frame >= 0) + { + // update timer history + int hidx = cur_frame % HISTORY_NUM; + + timerp->mCountHistory[hidx] = timerp->mTotalTimeCounter; + timerp->mCountAverage = (timerp->mCountAverage * cur_frame + timerp->mTotalTimeCounter) / (cur_frame+1); + timerp->mCallHistory[hidx] = timerp->getFrameState().mCalls; + timerp->mCallAverage = (timerp->mCallAverage * cur_frame + timerp->getFrameState().mCalls) / (cur_frame+1); + } + } +} + +// static +void LLFastTimer::NamedTimer::resetFrame() +{ + if (sLog) + { //output current frame counts to performance log + F64 iclock_freq = 1000.0 / countsPerSecond(); // good place to calculate clock frequency + + F64 total_time = 0; + LLSD sd; + + for (NamedTimer::instance_iter it = NamedTimer::beginInstances(); + it != NamedTimer::endInstances(); + ++it) + { + NamedTimer& timer = *it; + FrameState& info = timer.getFrameState(); + sd[timer.getName()]["Time"] = (LLSD::Real) (info.mSelfTimeCounter*iclock_freq); + sd[timer.getName()]["Calls"] = (LLSD::Integer) info.mCalls; + + // computing total time here because getting the root timer's getCountHistory + // doesn't work correctly on the first frame + total_time = total_time + info.mSelfTimeCounter * iclock_freq; + } + + sd["Total"]["Time"] = (LLSD::Real) total_time; + sd["Total"]["Calls"] = (LLSD::Integer) 1; + + { + LLMutexLock lock(sLogLock); + sLogQueue.push(sd); + } + } + + + // tag timers by position in depth first traversal of tree + S32 index = 0; + for(timer_tree_dfs_iterator_t it = begin_timer_tree(*NamedTimerFactory::instance().getRootTimer()); + it != end_timer_tree(); + ++it) + { + NamedTimer* timerp = (*it); + + timerp->mFrameStateIndex = index; + index++; + + llassert_always(timerp->mFrameStateIndex < (S32)getFrameStateList().size()); + } + + // sort timers by dfs traversal order to improve cache coherency + std::sort(getFrameStateList().begin(), getFrameStateList().end(), SortTimersDFS()); + + // update pointers into framestatelist now that we've sorted it + DeclareTimer::updateCachedPointers(); + + // reset for next frame + for (NamedTimer::instance_iter it = NamedTimer::beginInstances(); + it != NamedTimer::endInstances(); + ++it) + { + NamedTimer& timer = *it; + + FrameState& info = timer.getFrameState(); + info.mSelfTimeCounter = 0; + info.mCalls = 0; + info.mLastCaller = NULL; + info.mMoveUpTree = false; + // update parent pointer in timer state struct + if (timer.mParent) + { + info.mParent = &timer.mParent->getFrameState(); + } + } + + //sTimerCycles = 0; + //sTimerCalls = 0; +} + +//static +void LLFastTimer::NamedTimer::reset() +{ + resetFrame(); // reset frame data + + // walk up stack of active timers and reset start times to current time + // effectively zeroing out any accumulated time + U32 cur_time = get_cpu_clock_count_32(); + + // root defined by parent pointing to self + CurTimerData* cur_data = &sCurTimerData; + LLFastTimer* cur_timer = cur_data->mCurTimer; + while(cur_timer->mLastTimerData.mCurTimer != cur_timer) + { + cur_timer->mStartTime = cur_time; + cur_data->mChildTime = 0; + + cur_data = &cur_timer->mLastTimerData; + cur_timer = cur_data->mCurTimer; + } + + // reset all history + for (NamedTimer::instance_iter it = NamedTimer::beginInstances(); + it != NamedTimer::endInstances(); + ++it) + { + NamedTimer& timer = *it; + if (&timer != NamedTimerFactory::instance().getRootTimer()) + { + timer.setParent(NamedTimerFactory::instance().getRootTimer()); + } + + timer.mCountAverage = 0; + timer.mCallAverage = 0; + memset(timer.mCountHistory, 0, sizeof(U32) * HISTORY_NUM); + memset(timer.mCallHistory, 0, sizeof(U32) * HISTORY_NUM); + } + + sLastFrameIndex = 0; + sCurFrameIndex = 0; +} + +//static +LLFastTimer::info_list_t& LLFastTimer::getFrameStateList() +{ + if (!sTimerInfos) + { + sTimerInfos = new info_list_t(); + } + return *sTimerInfos; +} + + +U32 LLFastTimer::NamedTimer::getHistoricalCount(S32 history_index) const +{ + S32 history_idx = (getLastFrameIndex() + history_index) % LLFastTimer::NamedTimer::HISTORY_NUM; + return mCountHistory[history_idx]; +} + +U32 LLFastTimer::NamedTimer::getHistoricalCalls(S32 history_index ) const +{ + S32 history_idx = (getLastFrameIndex() + history_index) % LLFastTimer::NamedTimer::HISTORY_NUM; + return mCallHistory[history_idx]; +} + +LLFastTimer::FrameState& LLFastTimer::NamedTimer::getFrameState() const +{ + llassert_always(mFrameStateIndex >= 0); + if (this == NamedTimerFactory::instance().getActiveRootTimer()) + { + return NamedTimerFactory::instance().getRootFrameState(); + } + return getFrameStateList()[mFrameStateIndex]; +} + +// static +LLFastTimer::NamedTimer& LLFastTimer::NamedTimer::getRootNamedTimer() +{ + return *NamedTimerFactory::instance().getActiveRootTimer(); +} + +std::vector<LLFastTimer::NamedTimer*>::const_iterator LLFastTimer::NamedTimer::beginChildren() +{ + return mChildren.begin(); +} + +std::vector<LLFastTimer::NamedTimer*>::const_iterator LLFastTimer::NamedTimer::endChildren() +{ + return mChildren.end(); +} + +std::vector<LLFastTimer::NamedTimer*>& LLFastTimer::NamedTimer::getChildren() +{ + return mChildren; +} + +//static +void LLFastTimer::nextFrame() +{ + countsPerSecond(); // good place to calculate clock frequency + U64 frame_time = get_cpu_clock_count_64(); + if ((frame_time - sLastFrameTime) >> 8 > 0xffffffff) + { + llinfos << "Slow frame, fast timers inaccurate" << llendl; + } + + if (sPauseHistory) + { + sResetHistory = true; + } + else if (sResetHistory) + { + sLastFrameIndex = 0; + sCurFrameIndex = 0; + sResetHistory = false; + } + else // not paused + { + NamedTimer::processTimes(); + sLastFrameIndex = sCurFrameIndex++; + } + + // get ready for next frame + NamedTimer::resetFrame(); + sLastFrameTime = frame_time; +} + +//static +void LLFastTimer::dumpCurTimes() +{ + // accumulate timings, etc. + NamedTimer::processTimes(); + + F64 clock_freq = (F64)countsPerSecond(); + F64 iclock_freq = 1000.0 / clock_freq; // clock_ticks -> milliseconds + + // walk over timers in depth order and output timings + for(timer_tree_dfs_iterator_t it = begin_timer_tree(*NamedTimerFactory::instance().getRootTimer()); + it != end_timer_tree(); + ++it) + { + NamedTimer* timerp = (*it); + F64 total_time_ms = ((F64)timerp->getHistoricalCount(0) * iclock_freq); + // Don't bother with really brief times, keep output concise + if (total_time_ms < 0.1) continue; + + std::ostringstream out_str; + for (S32 i = 0; i < timerp->getDepth(); i++) + { + out_str << "\t"; + } + + + out_str << timerp->getName() << " " + << std::setprecision(3) << total_time_ms << " ms, " + << timerp->getHistoricalCalls(0) << " calls"; + + llinfos << out_str.str() << llendl; + } +} + +//static +void LLFastTimer::reset() +{ + NamedTimer::reset(); +} + + +//static +void LLFastTimer::writeLog(std::ostream& os) +{ + while (!sLogQueue.empty()) + { + LLSD& sd = sLogQueue.front(); + LLSDSerialize::toXML(sd, os); + LLMutexLock lock(sLogLock); + sLogQueue.pop(); + } +} + +//static +const LLFastTimer::NamedTimer* LLFastTimer::getTimerByName(const std::string& name) +{ + return NamedTimerFactory::instance().getTimerByName(name); +} + +LLFastTimer::LLFastTimer(LLFastTimer::FrameState* state) +: mFrameState(state) +{ + U32 start_time = get_cpu_clock_count_32(); + mStartTime = start_time; + mFrameState->mActiveCount++; + LLFastTimer::sCurTimerData.mCurTimer = this; + LLFastTimer::sCurTimerData.mFrameState = mFrameState; + LLFastTimer::sCurTimerData.mChildTime = 0; + mLastTimerData = LLFastTimer::sCurTimerData; +} + + +////////////////////////////////////////////////////////////////////////////// |