// ----------------------------------------------------------------
// SharedStateManager::find
// ----------------------------------------------------------------
//
// The find methods don't need to lock _listMutex because the thread
// from which they are called is doing the writing to the lists.
osg::StateSet* SharedStateManager::find(osg::StateSet *ss)
{
StateSetSet::iterator result
= _sharedStateSetList.find(osg::ref_ptr<osg::StateSet>(ss));
if (result == _sharedStateSetList.end())
return NULL;
else
return result->get();
}
void
StateSetCache::prune()
{
// assume an exclusive mutex is taken.
unsigned ss_count = 0, sa_count = 0;
for( StateSetSet::iterator i = _stateSetCache.begin(); i != _stateSetCache.end(); )
{
if ( i->get()->referenceCount() <= 1 )
{
// do not call releaseGLObjects since the attrs themselves might still be shared
// TODO: review this.
_stateSetCache.erase( i++ );
ss_count++;
}
else
{
++i;
}
}
for( StateAttributeSet::iterator i = _stateAttributeCache.begin(); i != _stateAttributeCache.end(); )
{
if ( i->get()->referenceCount() <= 1 )
{
i->get()->releaseGLObjects( 0L );
_stateAttributeCache.erase( i++ );
sa_count++;
}
else
{
++i;
}
}
OE_DEBUG << LC << "Pruned " << sa_count << " attributes, " << ss_count << " statesets" << std::endl;
}