root/OpenSceneGraph/trunk/include/osg/Stats @ 13041

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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2007 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version.  The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * OpenSceneGraph Public License for more details.
12*/
13
14#ifndef OSG_STATS
15#define OSG_STATS 1
16
17#include <osg/Referenced>
18#include <OpenThreads/Mutex>
19#include <OpenThreads/ScopedLock>
20
21#include <string>
22#include <map>
23#include <vector>
24#include <ostream>
25
26namespace osg {
27
28class OSG_EXPORT Stats : public osg::Referenced
29{
30    public:
31
32        Stats(const std::string& name);
33
34        Stats(const std::string& name, unsigned int numberOfFrames);
35
36        void setName(const std::string& name) { _name = name; }
37        const std::string& getName() const { return _name; }
38
39        void allocate(unsigned int numberOfFrames);
40
41        unsigned int getEarliestFrameNumber() const { return _latestFrameNumber < static_cast<unsigned int>(_attributeMapList.size()) ? 0 : _latestFrameNumber - static_cast<unsigned int>(_attributeMapList.size()) + 1; }
42        unsigned int getLatestFrameNumber() const { return _latestFrameNumber; }
43
44        typedef std::map<std::string, double> AttributeMap;
45        typedef std::vector<AttributeMap> AttributeMapList;
46
47        bool setAttribute(unsigned int frameNumber, const std::string& attributeName, double value);
48
49        inline bool getAttribute(unsigned int frameNumber, const std::string& attributeName, double& value) const
50        {
51            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
52            return getAttributeNoMutex(frameNumber, attributeName, value);
53        }
54
55        bool getAveragedAttribute(const std::string& attributeName, double& value, bool averageInInverseSpace=false) const;
56
57        bool getAveragedAttribute(unsigned int startFrameNumber, unsigned int endFrameNumber, const std::string& attributeName, double& value, bool averageInInverseSpace=false) const;
58
59        inline AttributeMap& getAttributeMap(unsigned int frameNumber)
60        {
61            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
62            return getAttributeMapNoMutex(frameNumber);
63        }
64
65        inline const AttributeMap& getAttributeMap(unsigned int frameNumber) const
66        {
67            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
68            return getAttributeMapNoMutex(frameNumber);
69        }
70
71        typedef std::map<std::string, bool> CollectMap;
72
73        void collectStats(const std::string& str, bool flag) { _collectMap[str] = flag; }
74
75        inline bool collectStats(const std::string& str) const
76        {
77            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
78
79            CollectMap::const_iterator itr = _collectMap.find(str);
80            return (itr !=  _collectMap.end()) ? itr->second : false;
81        }
82
83        void report(std::ostream& out, const char* indent=0) const;
84        void report(std::ostream& out, unsigned int frameNumber, const char* indent=0) const;
85
86    protected:
87
88        virtual ~Stats() {}
89
90        bool getAttributeNoMutex(unsigned int frameNumber, const std::string& attributeName, double& value) const;
91
92        AttributeMap& getAttributeMapNoMutex(unsigned int frameNumber);
93        const AttributeMap& getAttributeMapNoMutex(unsigned int frameNumber) const;
94
95
96        int getIndex(unsigned int frameNumber) const
97        {
98            // reject frame that are in the future
99            if (frameNumber > _latestFrameNumber) return -1;
100
101            // reject frames that are too early
102            if (frameNumber < getEarliestFrameNumber()) return -1;
103
104            if (frameNumber >= _baseFrameNumber) return frameNumber - _baseFrameNumber;
105            else return static_cast<int>(_attributeMapList.size()) - (_baseFrameNumber-frameNumber);
106        }
107
108        std::string         _name;
109
110        mutable OpenThreads::Mutex  _mutex;
111
112        unsigned int        _baseFrameNumber;
113        unsigned int        _latestFrameNumber;
114
115        AttributeMapList    _attributeMapList;
116        AttributeMap        _invalidAttributeMap;
117
118        CollectMap          _collectMap;
119
120};
121
122
123}
124
125#endif
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