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Improvements to the DatabasePager

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This commit is contained in:
Robert Osfield
2003-10-12 12:13:58 +00:00
parent fad832425f
commit 42eb39ef37
3 changed files with 177 additions and 68 deletions
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167
src/osgDB/DatabasePager.cpp
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@@ -19,6 +19,10 @@ DatabasePager::DatabasePager()
{
//osg::notify(osg::INFO)<<"Constructing DatabasePager()"<<std::endl;
_frameNumber = 0;
_frameBlock = new Producer::Block;
_fileRequestListEmptyBlock = new Producer::Block;
_deleteRemovedSubgraphsInDatabaseThread = true;
_expiryDelay = 1.0;
@@ -47,6 +51,7 @@ void DatabasePager::requestNodeFile(const std::string& fileName,osg::Group* grou
{
double timestamp = framestamp?framestamp->getReferenceTime():0.0;
int frameNumber = framestamp?framestamp->getFrameNumber():_frameNumber;
// search to see if filename already exist in the file loaded list.
bool foundEntry = false;
@@ -60,6 +65,7 @@ void DatabasePager::requestNodeFile(const std::string& fileName,osg::Group* grou
if ((*litr)->_fileName==fileName)
{
foundEntry = true;
(*litr)->_frameNumberLastRequest = frameNumber;
(*litr)->_timestampLastRequest = timestamp;
(*litr)->_priorityLastRequest = priority;
++((*litr)->_numOfRequests);
@@ -79,6 +85,7 @@ void DatabasePager::requestNodeFile(const std::string& fileName,osg::Group* grou
if ((*litr)->_fileName==fileName)
{
foundEntry = true;
(*litr)->_frameNumberLastRequest = frameNumber;
(*litr)->_timestampLastRequest = timestamp;
(*litr)->_priorityLastRequest = priority;
++((*litr)->_numOfRequests);
@@ -104,21 +111,28 @@ void DatabasePager::requestNodeFile(const std::string& fileName,osg::Group* grou
foundEntry = true;
(*ritr)->_timestampLastRequest = timestamp;
(*ritr)->_priorityLastRequest = priority;
(*ritr)->_frameNumberLastRequest = frameNumber;
++((*ritr)->_numOfRequests);
}
}
if (!foundEntry)
{
osg::notify(osg::INFO)<<"In DatabasePager::fileRquest("<<fileName<<")"<<std::endl;
osg::ref_ptr<DatabaseRequest> databaseRequest = new DatabaseRequest;
databaseRequest->_fileName = fileName;
databaseRequest->_frameNumberFirstRequest = frameNumber;
databaseRequest->_timestampFirstRequest = timestamp;
databaseRequest->_priorityFirstRequest = priority;
databaseRequest->_frameNumberLastRequest = frameNumber;
databaseRequest->_timestampLastRequest = timestamp;
databaseRequest->_priorityLastRequest = priority;
databaseRequest->_groupForAddingLoadedSubgraph = group;
if (_fileRequestList.empty()) _fileRequestListEmptyBlock->release();
_fileRequestList.push_back(databaseRequest);
}
@@ -144,6 +158,23 @@ void DatabasePager::requestNodeFile(const std::string& fileName,osg::Group* grou
}
}
void DatabasePager::signalBeginFrame(const osg::FrameStamp* framestamp)
{
if (framestamp)
{
osg::notify(osg::INFO) << "signalBeginFrame "<<framestamp->getFrameNumber()<<">>>>>>>>>>>>>>>>"<<std::endl;
_frameNumber = framestamp->getFrameNumber();
} else osg::notify(osg::INFO) << "signalBeginFrame >>>>>>>>>>>>>>>>"<<std::endl;
_frameBlock->reset();
}
void DatabasePager::signalEndFrame()
{
osg::notify(osg::INFO) << "signalEndFrame <<<<<<<<<<<<<<<<<<<< "<<std::endl;
_frameBlock->release();
}
class FindCompileableRenderingObjectsVisitor : public osg::NodeVisitor
{
public:
@@ -232,6 +263,17 @@ void DatabasePager::run()
do
{
//std::cout<<"In run loop"<<std::endl;
osg::Timer_t t1 = osg::Timer::instance()->tick();
_fileRequestListEmptyBlock->block();
osg::Timer_t t2 = osg::Timer::instance()->tick();
_frameBlock->block();
osg::Timer_t t3 = osg::Timer::instance()->tick();
//std::cout<<"Time in _fileRequestListEmptyBlock block()"<<osg::Timer::instance()->delta_m(t1,t2)<<std::endl;
//std::cout<<"Time in _frameBlock block()"<<osg::Timer::instance()->delta_m(t2,t3)<<std::endl;
//
// delete any children if required.
@@ -263,74 +305,95 @@ void DatabasePager::run()
if (databaseRequest.valid())
{
// load the data, note safe to write to the databaseRequest since once
// it is created this thread is the only one to write to the _loadedModel pointer.
databaseRequest->_loadedModel = osgDB::readNodeFile(databaseRequest->_fileName);
bool loadedObjectsNeedToBeCompiled = false;
if (databaseRequest->_loadedModel.valid() && !_activeGraphicsContexts.empty())
// check if databaseRequest is still relevant
if (_frameNumber-databaseRequest->_frameNumberLastRequest<=1)
{
// force a compute of the loaded model's bounding volume, so that when the subgraph
// merged with the main scene graph and large computeBound() isn't incurred.
databaseRequest->_loadedModel->getBound();
ActiveGraphicsContexts::iterator itr = _activeGraphicsContexts.begin();
DataToCompile& dtc = databaseRequest->_dataToCompileMap[*itr];
++itr;
// find all the compileable rendering objects
FindCompileableRenderingObjectsVisitor frov(dtc);
databaseRequest->_loadedModel->accept(frov);
if (!dtc.first.empty() || !dtc.second.empty())
// load the data, note safe to write to the databaseRequest since once
// it is created this thread is the only one to write to the _loadedModel pointer.
osg::notify(osg::INFO)<<"In DatabasePager thread readNodeFile("<<databaseRequest->_fileName<<")"<<std::endl;
osg::Timer_t before = osg::Timer::instance()->tick();
databaseRequest->_loadedModel = osgDB::readNodeFile(databaseRequest->_fileName);
osg::notify(osg::INFO)<<" node read"<<osg::Timer::instance()->delta_m(before,osg::Timer::instance()->tick())<<std::endl;
bool loadedObjectsNeedToBeCompiled = false;
if (databaseRequest->_loadedModel.valid() && !_activeGraphicsContexts.empty())
{
loadedObjectsNeedToBeCompiled = true;
// copy the objects to compile list to the other graphics context list.
for(;
itr != _activeGraphicsContexts.end();
++itr)
// force a compute of the loaded model's bounding volume, so that when the subgraph
// merged with the main scene graph and large computeBound() isn't incurred.
databaseRequest->_loadedModel->getBound();
ActiveGraphicsContexts::iterator itr = _activeGraphicsContexts.begin();
DataToCompile& dtc = databaseRequest->_dataToCompileMap[*itr];
++itr;
// find all the compileable rendering objects
FindCompileableRenderingObjectsVisitor frov(dtc);
databaseRequest->_loadedModel->accept(frov);
if (!dtc.first.empty() || !dtc.second.empty())
{
databaseRequest->_dataToCompileMap[*itr] = dtc;
loadedObjectsNeedToBeCompiled = true;
// copy the objects to compile list to the other graphics context list.
for(;
itr != _activeGraphicsContexts.end();
++itr)
{
databaseRequest->_dataToCompileMap[*itr] = dtc;
}
}
}
}
}
// move the databaseRequest from the front of the fileRequest to the end of
// dataLoad list.
_fileRequestListMutex.lock();
// move the databaseRequest from the front of the fileRequest to the end of
// dataLoad list.
_fileRequestListMutex.lock();
if (databaseRequest->_loadedModel.valid())
{
if (loadedObjectsNeedToBeCompiled)
if (databaseRequest->_loadedModel.valid())
{
_dataToCompileListMutex.lock();
_dataToCompileList.push_back(databaseRequest);
_dataToCompileListMutex.unlock();
}
else
{
_dataToMergeListMutex.lock();
_dataToMergeList.push_back(databaseRequest);
_dataToMergeListMutex.unlock();
}
}
if (loadedObjectsNeedToBeCompiled)
{
_dataToCompileListMutex.lock();
_dataToCompileList.push_back(databaseRequest);
_dataToCompileListMutex.unlock();
}
else
{
_dataToMergeListMutex.lock();
_dataToMergeList.push_back(databaseRequest);
_dataToMergeListMutex.unlock();
}
}
_fileRequestList.erase(_fileRequestList.begin());
_fileRequestList.erase(_fileRequestList.begin());
_fileRequestListMutex.unlock();
if (_fileRequestList.empty()) _fileRequestListEmptyBlock->reset();
_fileRequestListMutex.unlock();
}
else
{
//std::cout<<"frame number delta for "<<databaseRequest->_fileName<<" "<<_frameNumber-databaseRequest->_frameNumberLastRequest<<std::endl;
// remove the databaseRequest from the front of the fileRequest to the end of
// dataLoad list as its is no longer relevant
_fileRequestListMutex.lock();
_fileRequestList.erase(_fileRequestList.begin());
if (_fileRequestList.empty()) _fileRequestListEmptyBlock->reset();
_fileRequestListMutex.unlock();
}
}
// go to sleep till our the next time our thread gets scheduled.
YieldCurrentThread();
//YieldCurrentThread();
//std::cout<<"At end of loop"<<std::endl;
} while (!testCancel());