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/**
* @file llstat.h
* @brief Runtime statistics accumulation.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
#ifndef LL_LLSTAT_H
#define LL_LLSTAT_H
#include <map>
#include "lltimer.h"
#include "llframetimer.h"
class LLSD;
// ----------------------------------------------------------------------------
class LL_COMMON_API LLStat
{
private:
typedef std::multimap<std::string, LLStat*> stat_map_t;
static stat_map_t& getStatList();
public:
LLStat(std::string name = std::string(), S32 num_bins = 32, BOOL use_frame_timer = FALSE);
~LLStat();
void start(); // Start the timer for the current "frame", otherwise uses the time tracked from
// the last addValue
void reset();
void addValue(const F32 value = 1.f); // Adds the current value being tracked, and tracks the DT.
void addValue(const S32 value) { addValue((F32)value); }
void addValue(const U32 value) { addValue((F32)value); }
S32 getNextBin() const;
F32 getPrev(S32 age) const; // Age is how many "addValues" previously - zero is current
F32 getPrevPerSec(S32 age) const; // Age is how many "addValues" previously - zero is current
F32 getCurrent() const;
F32 getCurrentPerSec() const;
F32 getMin() const;
F32 getMinPerSec() const;
F32 getMean() const;
F32 getMeanPerSec() const;
F32 getMeanDuration() const;
F32 getMax() const;
F32 getMaxPerSec() const;
U32 getNumValues() const;
S32 getNumBins() const;
F64 getLastTime() const;
private:
BOOL mUseFrameTimer;
U32 mNumValues;
U32 mNumBins;
F32 mLastValue;
F64 mLastTime;
struct ValueEntry
{
ValueEntry()
: mValue(0.f),
mBeginTime(0.0),
mTime(0.0),
mDT(0.f)
{}
F32 mValue;
F64 mBeginTime;
F64 mTime;
F32 mDT;
};
ValueEntry* mBins;
S32 mCurBin;
S32 mNextBin;
std::string mName;
static LLTimer sTimer;
static LLFrameTimer sFrameTimer;
public:
static LLStat* getStat(const std::string& name)
{
// return the first stat that matches 'name'
stat_map_t::iterator iter = getStatList().find(name);
if (iter != getStatList().end())
return iter->second;
else
return NULL;
}
};
#endif // LL_STAT_
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