bool LatencyTestDeviceImpl::SetConfiguration(const OVR::LatencyTestConfiguration& configuration, bool waitFlag)
{
bool result = false;
ThreadCommandQueue* queue = GetManagerImpl()->GetThreadQueue();
if (GetManagerImpl()->GetThreadId() != OVR::GetCurrentThreadId())
{
if (!waitFlag)
{
return queue->PushCall(this, &LatencyTestDeviceImpl::setConfiguration, configuration);
}
if (!queue->PushCallAndWaitResult( this,
&LatencyTestDeviceImpl::setConfiguration,
&result,
configuration))
{
return false;
}
}
else
return setConfiguration(configuration);
return result;
}
void DeviceCommon::DeviceRelease()
{
while(1)
{
UInt32 refCount = RefCount;
OVR_ASSERT(refCount > 0);
if (refCount == 1)
{
DeviceManagerImpl* manager = pCreateDesc->GetManagerImpl();
ThreadCommandQueue* queue = manager->GetThreadQueue();
// Enqueue ReleaseDevice for {1 -> 0} transition with no wait.
// We pass our reference ownership into the queue to destroy.
// It's in theory possible for another thread to re-steal our device reference,
// but that is checked for atomically in DeviceManagerImpl::ReleaseDevice.
if (!queue->PushCall(manager, &DeviceManagerImpl::ReleaseDevice_MgrThread,
pCreateDesc->pDevice))
{
// PushCall shouldn't fail because background thread runs while manager is
// alive and we are holding Manager alive through pParent chain.
OVR_ASSERT(false);
}
// Warning! At his point everything, including manager, may be dead.
break;
}
else if (RefCount.CompareAndSet_NoSync(refCount, refCount-1))
{
break;
}
}
}
bool LatencyTestDeviceImpl::GetConfiguration(OVR::LatencyTestConfiguration* configuration)
{
bool result = false;
ThreadCommandQueue* pQueue = this->GetManagerImpl()->GetThreadQueue();
if (!pQueue->PushCallAndWaitResult(this, &LatencyTestDeviceImpl::getConfiguration, &result, configuration))
return false;
return result;
}
bool LatencyTestDeviceImpl::SetDisplay(const OVR::LatencyTestDisplay& display, bool waitFlag)
{
bool result = false;
ThreadCommandQueue * queue = GetManagerImpl()->GetThreadQueue();
if (!waitFlag)
{
return queue->PushCall(this, &LatencyTestDeviceImpl::setDisplay, display);
}
if (!queue->PushCallAndWaitResult( this,
&LatencyTestDeviceImpl::setDisplay,
&result,
display))
{
return false;
}
return result;
}
bool LatencyTestDeviceImpl::SetStartTest(const Color& targetColor, bool waitFlag)
{
bool result = false;
ThreadCommandQueue* queue = GetManagerImpl()->GetThreadQueue();
if (!waitFlag)
{
return queue->PushCall(this, &LatencyTestDeviceImpl::setStartTest, targetColor);
}
if (!queue->PushCallAndWaitResult( this,
&LatencyTestDeviceImpl::setStartTest,
&result,
targetColor))
{
return false;
}
return result;
}
bool ThreadCommandQueueImpl::PushCommand(const ThreadCommand& command)
{
ThreadCommand::NotifyEvent* completeEvent = 0;
ThreadCommand::NotifyEvent* queueAvailableEvent = 0;
// Repeat writing command into buffer until it is available.
do {
{ // Lock Scope
Lock::Locker lock(&QueueLock);
if (queueAvailableEvent)
{
FreeNotifyEvent_NTS(queueAvailableEvent);
queueAvailableEvent = 0;
}
// Don't allow any commands after PushExitCommand() is called.
if (ExitEnqueued && !command.ExitFlag)
return false;
bool bufferWasEmpty = CommandBuffer.IsEmpty();
UByte* buffer = CommandBuffer.Write(command.GetSize());
if (buffer)
{
ThreadCommand* c = command.CopyConstruct(buffer);
if (c->NeedsWait())
completeEvent = c->pEvent = AllocNotifyEvent_NTS();
// Signal-waker consumer when we add data to buffer.
if (bufferWasEmpty)
pQueue->OnPushNonEmpty_Locked();
break;
}
queueAvailableEvent = AllocNotifyEvent_NTS();
BlockedProducers.PushBack(queueAvailableEvent);
} // Lock Scope
queueAvailableEvent->Wait();
} while(1);
// Command was enqueued, wait if necessary.
if (completeEvent)
{
completeEvent->Wait();
Lock::Locker lock(&QueueLock);
FreeNotifyEvent_NTS(completeEvent);
}
return true;
}
// 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;
}
