// Pops the next command from the thread queue, if any is available.
bool ThreadCommandQueueImpl::PopCommand(ThreadCommand::PopBuffer* popBuffer)
{
Lock::Locker lock(&QueueLock);
UByte* buffer = CommandBuffer.ReadBegin();
if (!buffer)
{
// Notify thread while in lock scope, enabling initialization of wait.
pQueue->OnPopEmpty_Locked();
return false;
}
popBuffer->InitFromBuffer(buffer);
CommandBuffer.ReadEnd(popBuffer->GetSize());
if (!BlockedProducers.IsEmpty())
{
ThreadCommand::NotifyEvent* queueAvailableEvent = BlockedProducers.GetFirst();
queueAvailableEvent->RemoveNode();
queueAvailableEvent->PulseEvent();
// Event is freed later by waiter.
}
return true;
}
