//-----------------------------------------------------------------------
void Resource::unload(void)
{
// Early-out without lock (mitigate perf cost of ensuring unloaded)
LoadingState old = mLoadingState.get();
if (old!=LOADSTATE_LOADED && old!=LOADSTATE_PREPARED) return;
if (!mLoadingState.cas(old,LOADSTATE_UNLOADING)) return;
// Scope lock for actual unload
{
OGRE_LOCK_AUTO_MUTEX
if (old==LOADSTATE_PREPARED) {
unprepareImpl();
} else {
preUnloadImpl();
unloadImpl();
postUnloadImpl();
}
}
mLoadingState.set(LOADSTATE_UNLOADED);
// Notify manager
// Note if we have gone from PREPARED to UNLOADED, then we haven't actually
// unloaded, i.e. there is no memory freed on the GPU.
if(old==LOADSTATE_LOADED && mCreator)
mCreator->_notifyResourceUnloaded(this);
}
//-----------------------------------------------------------------------
void Resource::unload(void)
{
// Early-out without lock (mitigate perf cost of ensuring unloaded)
if (mLoadingState != LOADSTATE_LOADED)
return;
// Scope lock for loading status
{
OGRE_LOCK_MUTEX(mLoadingStatusMutex)
if (mLoadingState == LOADSTATE_LOADING)
{
OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR,
"Cannot unload resource " + mName + " whilst loading is in progress!",
"Resource::unload");
}
if (mLoadingState != LOADSTATE_LOADED)
return; // nothing to do
mLoadingState = LOADSTATE_UNLOADING;
}
// Scope lock for actual unload
{
OGRE_LOCK_AUTO_MUTEX
preUnloadImpl();
unloadImpl();
postUnloadImpl();
}
// Scope lock for loading status
{
OGRE_LOCK_MUTEX(mLoadingStatusMutex)
mLoadingState = LOADSTATE_UNLOADED;
}
// Notify manager
if(mCreator)
mCreator->_notifyResourceUnloaded(this);
}