bool RPC1::CallBlocking( OVR::String uniqueID, OVR::Net::BitStream* bitStream, Ptr<Connection> pConnection, OVR::Net::BitStream* returnData )
{
// If invalid parameters,
if (!pConnection)
{
// Note: This may happen if the endpoint disconnects just before the call
return false;
}
OVR::Net::BitStream out;
out.Write((MessageID) OVRID_RPC1);
out.Write((MessageID) CALL_BLOCKING);
out.Write(uniqueID);
if (bitStream)
{
bitStream->ResetReadPointer();
out.AlignWriteToByteBoundary();
out.Write(bitStream);
}
SendParameters sp(pConnection, out.GetData(), out.GetNumberOfBytesUsed());
if (returnData)
{
returnData->Reset();
}
// Only one thread call at a time
Lock::Locker singleRPCLocker(&singleRPCLock);
// Note this does not prevent multiple calls at a time because .Wait will unlock it below.
// The purpose of this mutex is to synchronize the polling thread and this one, not prevent
// multiple threads from invoking RPC.
Mutex::Locker locker(&callBlockingMutex);
blockingReturnValue->Reset();
blockingOnThisConnection = pConnection;
int bytesSent = pSession->Send(&sp);
if (bytesSent == sp.Bytes)
{
while (blockingOnThisConnection == pConnection)
{
callBlockingWait.Wait(&callBlockingMutex);
}
}
if (returnData)
{
returnData->Write(blockingReturnValue);
returnData->ResetReadPointer();
}
return true;
}
void RPC1::BroadcastSignal(OVR::String sharedIdentifier, OVR::Net::BitStream* bitStream)
{
OVR::Net::BitStream out;
out.Write((MessageID) OVRID_RPC1);
out.Write((MessageID) ID_RPC4_SIGNAL);
//out.Write(PluginId);
out.Write(sharedIdentifier);
if (bitStream)
{
bitStream->ResetReadPointer();
out.AlignWriteToByteBoundary();
out.Write(bitStream);
}
BroadcastParameters p(out.GetData(), out.GetNumberOfBytesUsed());
pSession->Broadcast(&p);
}
bool RPC1::Signal(OVR::String sharedIdentifier, OVR::Net::BitStream* bitStream, Ptr<Connection> pConnection)
{
OVR::Net::BitStream out;
out.Write((MessageID) OVRID_RPC1);
out.Write((MessageID) ID_RPC4_SIGNAL);
//out.Write(PluginId);
out.Write(sharedIdentifier);
if (bitStream)
{
bitStream->ResetReadPointer();
out.AlignWriteToByteBoundary();
out.Write(bitStream);
}
SendParameters sp(pConnection, out.GetData(), out.GetNumberOfBytesUsed());
int32_t bytesSent = pSession->Send(&sp);
return bytesSent == sp.Bytes;
}
void RPC1::OnReceive(ReceivePayload *pPayload, ListenerReceiveResult *lrrOut)
{
OVR_UNUSED(lrrOut);
if (pPayload->pData[0] == OVRID_RPC1)
{
OVR_ASSERT(pPayload->Bytes >= 2);
OVR::Net::BitStream bsIn((char*)pPayload->pData, pPayload->Bytes, false);
bsIn.IgnoreBytes(2);
if (pPayload->pData[1] == RPC_ERROR_FUNCTION_NOT_REGISTERED)
{
Mutex::Locker locker(&callBlockingMutex);
blockingReturnValue->Reset();
blockingOnThisConnection = 0;
callBlockingWait.NotifyAll();
}
else if (pPayload->pData[1] == ID_RPC4_RETURN)
{
Mutex::Locker locker(&callBlockingMutex);
blockingReturnValue->Reset();
blockingReturnValue->Write(bsIn);
blockingOnThisConnection = 0;
callBlockingWait.NotifyAll();
}
else if (pPayload->pData[1] == CALL_BLOCKING)
{
OVR::String uniqueId;
bsIn.Read(uniqueId);
RPCDelegate *bf = registeredBlockingFunctions.Get(uniqueId);
if (bf==0)
{
OVR::Net::BitStream bsOut;
bsOut.Write((unsigned char) OVRID_RPC1);
bsOut.Write((unsigned char) RPC_ERROR_FUNCTION_NOT_REGISTERED);
SendParameters sp(pPayload->pConnection, bsOut.GetData(), bsOut.GetNumberOfBytesUsed());
pSession->Send(&sp);
return;
}
OVR::Net::BitStream returnData;
bsIn.AlignReadToByteBoundary();
(*bf)(&bsIn, &returnData, pPayload);
OVR::Net::BitStream out;
out.Write((MessageID) OVRID_RPC1);
out.Write((MessageID) ID_RPC4_RETURN);
returnData.ResetReadPointer();
out.AlignWriteToByteBoundary();
out.Write(returnData);
SendParameters sp(pPayload->pConnection, out.GetData(), out.GetNumberOfBytesUsed());
pSession->Send(&sp);
}
else if (pPayload->pData[1]==ID_RPC4_SIGNAL)
{
OVR::String sharedIdentifier;
bsIn.Read(sharedIdentifier);
Observer<RPCSlot> *o = slotHash.GetSubject(sharedIdentifier);
if (o)
{
bsIn.AlignReadToByteBoundary();
if (o)
{
OVR::Net::BitStream serializedParameters(bsIn.GetData() + bsIn.GetReadOffset()/8, bsIn.GetNumberOfUnreadBits()/8, false);
o->Call(&serializedParameters, pPayload);
}
}
}
}
}