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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2007 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_STATS
#define OSG_STATS 1
#include <osg/Referenced>
#include <OpenThreads/Mutex>
#include <OpenThreads/ScopedLock>
#include <string>
#include <map>
#include <vector>
#include <ostream>
namespace osg {
class OSG_EXPORT Stats : public osg::Referenced
{
public:
Stats(const std::string& name);
Stats(const std::string& name, unsigned int numberOfFrames);
void setName(const std::string& name) { _name = name; }
const std::string& getName() const { return _name; }
void allocate(unsigned int numberOfFrames);
unsigned int getEarliestFrameNumber() const { return _latestFrameNumber < static_cast<unsigned int>(_attributeMapList.size()) ? 0 : _latestFrameNumber - static_cast<unsigned int>(_attributeMapList.size()) + 1; }
unsigned int getLatestFrameNumber() const { return _latestFrameNumber; }
typedef std::map<std::string, double> AttributeMap;
typedef std::vector<AttributeMap> AttributeMapList;
bool setAttribute(unsigned int frameNumber, const std::string& attributeName, double value);
inline bool getAttribute(unsigned int frameNumber, const std::string& attributeName, double& value) const
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
return getAttributeNoMutex(frameNumber, attributeName, value);
}
bool getAveragedAttribute(const std::string& attributeName, double& value, bool averageInInverseSpace=false) const;
bool getAveragedAttribute(unsigned int startFrameNumber, unsigned int endFrameNumber, const std::string& attributeName, double& value, bool averageInInverseSpace=false) const;
inline AttributeMap& getAttributeMap(unsigned int frameNumber)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
return getAttributeMapNoMutex(frameNumber);
}
inline const AttributeMap& getAttributeMap(unsigned int frameNumber) const
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
return getAttributeMapNoMutex(frameNumber);
}
typedef std::map<std::string, bool> CollectMap;
void collectStats(const std::string& str, bool flag) { _collectMap[str] = flag; }
inline bool collectStats(const std::string& str) const
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
CollectMap::const_iterator itr = _collectMap.find(str);
return (itr != _collectMap.end()) ? itr->second : false;
}
void report(std::ostream& out, const char* indent=0) const;
void report(std::ostream& out, unsigned int frameNumber, const char* indent=0) const;
protected:
virtual ~Stats() {}
bool getAttributeNoMutex(unsigned int frameNumber, const std::string& attributeName, double& value) const;
AttributeMap& getAttributeMapNoMutex(unsigned int frameNumber);
const AttributeMap& getAttributeMapNoMutex(unsigned int frameNumber) const;
int getIndex(unsigned int frameNumber) const
{
// reject frame that are in the future
if (frameNumber > _latestFrameNumber) return -1;
// reject frames that are too early
if (frameNumber < getEarliestFrameNumber()) return -1;
if (frameNumber >= _baseFrameNumber) return frameNumber - _baseFrameNumber;
else return static_cast<int>(_attributeMapList.size()) - (_baseFrameNumber-frameNumber);
}
std::string _name;
mutable OpenThreads::Mutex _mutex;
unsigned int _baseFrameNumber;
unsigned int _latestFrameNumber;
AttributeMapList _attributeMapList;
AttributeMap _invalidAttributeMap;
CollectMap _collectMap;
};
}
#endif
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