phoenix-firestorm/indra/llcommon/llstat.cpp

600 lines
9.5 KiB
C++

/**
* @file llstat.cpp
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, 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 "llstat.h"
#include "lllivefile.h"
#include "llerrorcontrol.h"
#include "llframetimer.h"
#include "timing.h"
#include "llsd.h"
#include "llsdserialize.h"
#include "llstl.h"
#include "u64.h"
// statics
LLStat::stat_map_t LLStat::sStatList;
//------------------------------------------------------------------------
LLTimer LLStat::sTimer;
LLFrameTimer LLStat::sFrameTimer;
void LLStat::init()
{
llassert(mNumBins > 0);
mNumValues = 0;
mLastValue = 0.f;
mLastTime = 0.f;
mCurBin = (mNumBins-1);
mNextBin = 0;
mBins = new F32[mNumBins];
mBeginTime = new F64[mNumBins];
mTime = new F64[mNumBins];
mDT = new F32[mNumBins];
for (U32 i = 0; i < mNumBins; i++)
{
mBins[i] = 0.f;
mBeginTime[i] = 0.0;
mTime[i] = 0.0;
mDT[i] = 0.f;
}
if (!mName.empty())
{
stat_map_t::iterator iter = sStatList.find(mName);
if (iter != sStatList.end())
llwarns << "LLStat with duplicate name: " << mName << llendl;
sStatList.insert(std::make_pair(mName, this));
}
}
LLStat::LLStat(const U32 num_bins, const BOOL use_frame_timer)
: mUseFrameTimer(use_frame_timer),
mNumBins(num_bins)
{
init();
}
LLStat::LLStat(std::string name, U32 num_bins, BOOL use_frame_timer)
: mUseFrameTimer(use_frame_timer),
mNumBins(num_bins),
mName(name)
{
init();
}
LLStat::~LLStat()
{
delete[] mBins;
delete[] mBeginTime;
delete[] mTime;
delete[] mDT;
if (!mName.empty())
{
// handle multiple entries with the same name
stat_map_t::iterator iter = sStatList.find(mName);
while (iter != sStatList.end() && iter->second != this)
++iter;
sStatList.erase(iter);
}
}
void LLStat::reset()
{
U32 i;
mNumValues = 0;
mLastValue = 0.f;
mCurBin = (mNumBins-1);
delete[] mBins;
delete[] mBeginTime;
delete[] mTime;
delete[] mDT;
mBins = new F32[mNumBins];
mBeginTime = new F64[mNumBins];
mTime = new F64[mNumBins];
mDT = new F32[mNumBins];
for (i = 0; i < mNumBins; i++)
{
mBins[i] = 0.f;
mBeginTime[i] = 0.0;
mTime[i] = 0.0;
mDT[i] = 0.f;
}
}
void LLStat::setBeginTime(const F64 time)
{
mBeginTime[mNextBin] = time;
}
void LLStat::addValueTime(const F64 time, const F32 value)
{
if (mNumValues < mNumBins)
{
mNumValues++;
}
// Increment the bin counters.
mCurBin++;
if ((U32)mCurBin == mNumBins)
{
mCurBin = 0;
}
mNextBin++;
if ((U32)mNextBin == mNumBins)
{
mNextBin = 0;
}
mBins[mCurBin] = value;
mTime[mCurBin] = time;
mDT[mCurBin] = (F32)(mTime[mCurBin] - mBeginTime[mCurBin]);
//this value is used to prime the min/max calls
mLastTime = mTime[mCurBin];
mLastValue = value;
// Set the begin time for the next stat segment.
mBeginTime[mNextBin] = mTime[mCurBin];
mTime[mNextBin] = mTime[mCurBin];
mDT[mNextBin] = 0.f;
}
void LLStat::start()
{
if (mUseFrameTimer)
{
mBeginTime[mNextBin] = sFrameTimer.getElapsedSeconds();
}
else
{
mBeginTime[mNextBin] = sTimer.getElapsedTimeF64();
}
}
void LLStat::addValue(const F32 value)
{
if (mNumValues < mNumBins)
{
mNumValues++;
}
// Increment the bin counters.
mCurBin++;
if ((U32)mCurBin == mNumBins)
{
mCurBin = 0;
}
mNextBin++;
if ((U32)mNextBin == mNumBins)
{
mNextBin = 0;
}
mBins[mCurBin] = value;
if (mUseFrameTimer)
{
mTime[mCurBin] = sFrameTimer.getElapsedSeconds();
}
else
{
mTime[mCurBin] = sTimer.getElapsedTimeF64();
}
mDT[mCurBin] = (F32)(mTime[mCurBin] - mBeginTime[mCurBin]);
//this value is used to prime the min/max calls
mLastTime = mTime[mCurBin];
mLastValue = value;
// Set the begin time for the next stat segment.
mBeginTime[mNextBin] = mTime[mCurBin];
mTime[mNextBin] = mTime[mCurBin];
mDT[mNextBin] = 0.f;
}
F32 LLStat::getMax() const
{
U32 i;
F32 current_max = mLastValue;
if (mNumBins == 0)
{
current_max = 0.f;
}
else
{
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
if (mBins[i] > current_max)
{
current_max = mBins[i];
}
}
}
return current_max;
}
F32 LLStat::getMean() const
{
U32 i;
F32 current_mean = 0.f;
U32 samples = 0;
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
current_mean += mBins[i];
samples++;
}
// There will be a wrap error at 2^32. :)
if (samples != 0)
{
current_mean /= samples;
}
else
{
current_mean = 0.f;
}
return current_mean;
}
F32 LLStat::getMin() const
{
U32 i;
F32 current_min = mLastValue;
if (mNumBins == 0)
{
current_min = 0.f;
}
else
{
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
if (mBins[i] < current_min)
{
current_min = mBins[i];
}
}
}
return current_min;
}
F32 LLStat::getSum() const
{
U32 i;
F32 sum = 0.f;
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
sum += mBins[i];
}
return sum;
}
F32 LLStat::getSumDuration() const
{
U32 i;
F32 sum = 0.f;
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
sum += mDT[i];
}
return sum;
}
F32 LLStat::getPrev(S32 age) const
{
S32 bin;
bin = mCurBin - age;
while (bin < 0)
{
bin += mNumBins;
}
if (bin == mNextBin)
{
// Bogus for bin we're currently working on.
return 0.f;
}
return mBins[bin];
}
F32 LLStat::getPrevPerSec(S32 age) const
{
S32 bin;
bin = mCurBin - age;
while (bin < 0)
{
bin += mNumBins;
}
if (bin == mNextBin)
{
// Bogus for bin we're currently working on.
return 0.f;
}
return mBins[bin] / mDT[bin];
}
F64 LLStat::getPrevBeginTime(S32 age) const
{
S32 bin;
bin = mCurBin - age;
while (bin < 0)
{
bin += mNumBins;
}
if (bin == mNextBin)
{
// Bogus for bin we're currently working on.
return 0.f;
}
return mBeginTime[bin];
}
F64 LLStat::getPrevTime(S32 age) const
{
S32 bin;
bin = mCurBin - age;
while (bin < 0)
{
bin += mNumBins;
}
if (bin == mNextBin)
{
// Bogus for bin we're currently working on.
return 0.f;
}
return mTime[bin];
}
F32 LLStat::getBin(S32 bin) const
{
return mBins[bin];
}
F32 LLStat::getBinPerSec(S32 bin) const
{
return mBins[bin] / mDT[bin];
}
F64 LLStat::getBinBeginTime(S32 bin) const
{
return mBeginTime[bin];
}
F64 LLStat::getBinTime(S32 bin) const
{
return mTime[bin];
}
F32 LLStat::getCurrent() const
{
return mBins[mCurBin];
}
F32 LLStat::getCurrentPerSec() const
{
return mBins[mCurBin] / mDT[mCurBin];
}
F64 LLStat::getCurrentBeginTime() const
{
return mBeginTime[mCurBin];
}
F64 LLStat::getCurrentTime() const
{
return mTime[mCurBin];
}
F32 LLStat::getCurrentDuration() const
{
return mDT[mCurBin];
}
F32 LLStat::getMeanPerSec() const
{
U32 i;
F32 value = 0.f;
F32 dt = 0.f;
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
value += mBins[i];
dt += mDT[i];
}
if (dt > 0.f)
{
return value/dt;
}
else
{
return 0.f;
}
}
F32 LLStat::getMeanDuration() const
{
F32 dur = 0.0f;
U32 count = 0;
for (U32 i=0; (i < mNumBins) && (i < mNumValues); i++)
{
if (i == (U32)mNextBin)
{
continue;
}
dur += mDT[i];
count++;
}
if (count > 0)
{
dur /= F32(count);
return dur;
}
else
{
return 0.f;
}
}
F32 LLStat::getMaxPerSec() const
{
U32 i;
F32 value;
if (mNextBin != 0)
{
value = mBins[0]/mDT[0];
}
else if (mNumValues > 0)
{
value = mBins[1]/mDT[1];
}
else
{
value = 0.f;
}
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
value = llmax(value, mBins[i]/mDT[i]);
}
return value;
}
F32 LLStat::getMinPerSec() const
{
U32 i;
F32 value;
if (mNextBin != 0)
{
value = mBins[0]/mDT[0];
}
else if (mNumValues > 0)
{
value = mBins[1]/mDT[1];
}
else
{
value = 0.f;
}
for (i = 0; (i < mNumBins) && (i < mNumValues); i++)
{
// Skip the bin we're currently filling.
if (i == (U32)mNextBin)
{
continue;
}
value = llmin(value, mBins[i]/mDT[i]);
}
return value;
}
F32 LLStat::getMinDuration() const
{
F32 dur = 0.0f;
for (U32 i=0; (i < mNumBins) && (i < mNumValues); i++)
{
dur = llmin(dur, mDT[i]);
}
return dur;
}
U32 LLStat::getNumValues() const
{
return mNumValues;
}
S32 LLStat::getNumBins() const
{
return mNumBins;
}
S32 LLStat::getCurBin() const
{
return mCurBin;
}
S32 LLStat::getNextBin() const
{
return mNextBin;
}
F64 LLStat::getLastTime() const
{
return mLastTime;
}