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141 lines
4.4 KiB
C++
141 lines
4.4 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osg/Version>
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#if OSG_VERSION_LESS_THAN(3,3,3)
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#include "objectcache.hpp"
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using namespace osgDB;
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////////////////////////////////////////////////////////////////////////////////////////////
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//
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// ObjectCache
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//
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ObjectCache::ObjectCache():
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osg::Referenced(true)
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{
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// OSG_NOTICE<<"Constructed ObjectCache"<<std::endl;
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}
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ObjectCache::~ObjectCache()
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{
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// OSG_NOTICE<<"Destructed ObjectCache"<<std::endl;
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}
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void ObjectCache::addObjectCache(ObjectCache* objectCache)
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{
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// don't allow a cache to be added to itself.
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if (objectCache==this) return;
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// lock both ObjectCache to prevent their contents from being modified by other threads while we merge.
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock1(_objectCacheMutex);
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock2(objectCache->_objectCacheMutex);
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// OSG_NOTICE<<"Inserting objects to main ObjectCache "<<objectCache->_objectCache.size()<<std::endl;
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_objectCache.insert(objectCache->_objectCache.begin(), objectCache->_objectCache.end());
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}
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void ObjectCache::addEntryToObjectCache(const std::string& filename, osg::Object* object, double timestamp)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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_objectCache[filename]=ObjectTimeStampPair(object,timestamp);
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}
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osg::Object* ObjectCache::getFromObjectCache(const std::string& fileName)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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ObjectCacheMap::iterator itr = _objectCache.find(fileName);
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if (itr!=_objectCache.end()) return itr->second.first.get();
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else return 0;
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}
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osg::ref_ptr<osg::Object> ObjectCache::getRefFromObjectCache(const std::string& fileName)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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ObjectCacheMap::iterator itr = _objectCache.find(fileName);
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if (itr!=_objectCache.end())
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{
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// OSG_NOTICE<<"Found "<<fileName<<" in ObjectCache "<<this<<std::endl;
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return itr->second.first;
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}
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else return 0;
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}
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void ObjectCache::updateTimeStampOfObjectsInCacheWithExternalReferences(double referenceTime)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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// look for objects with external references and update their time stamp.
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for(ObjectCacheMap::iterator itr=_objectCache.begin();
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itr!=_objectCache.end();
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++itr)
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{
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// if ref count is greater the 1 the object has an external reference.
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if (itr->second.first->referenceCount()>1)
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{
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// so update it time stamp.
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itr->second.second = referenceTime;
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}
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}
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}
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void ObjectCache::removeExpiredObjectsInCache(double expiryTime)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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// Remove expired entries from object cache
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ObjectCacheMap::iterator oitr = _objectCache.begin();
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while(oitr != _objectCache.end())
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{
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if (oitr->second.second<=expiryTime)
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{
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_objectCache.erase(oitr++);
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}
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else
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{
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++oitr;
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}
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}
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}
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void ObjectCache::removeFromObjectCache(const std::string& fileName)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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ObjectCacheMap::iterator itr = _objectCache.find(fileName);
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if (itr!=_objectCache.end()) _objectCache.erase(itr);
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}
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void ObjectCache::clear()
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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_objectCache.clear();
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}
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void ObjectCache::releaseGLObjects(osg::State* state)
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{
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OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_objectCacheMutex);
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for(ObjectCacheMap::iterator itr = _objectCache.begin();
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itr != _objectCache.end();
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++itr)
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{
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osg::Object* object = itr->second.first.get();
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object->releaseGLObjects(state);
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}
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}
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#endif
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