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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_