bool
Open(const PrivateIPDLInterface&,
MessageChannel* aOpenerChannel, ProcessHandle aOtherProcess,
Transport::Mode aOpenerMode,
ProtocolId aProtocol, ProtocolId aChildProtocol)
{
bool isParent = (Transport::MODE_SERVER == aOpenerMode);
ProcessHandle thisHandle = GetCurrentProcessHandle();
ProcessHandle parentHandle = isParent ? thisHandle : aOtherProcess;
ProcessHandle childHandle = !isParent ? thisHandle : aOtherProcess;
ProcessId parentId = GetProcId(parentHandle);
ProcessId childId = GetProcId(childHandle);
if (!parentId || !childId) {
return false;
}
TransportDescriptor parentSide, childSide;
if (!CreateTransport(parentHandle, childHandle,
&parentSide, &childSide)) {
return false;
}
Message* parentMsg = new ChannelOpened(parentSide, childId, aProtocol);
Message* childMsg = new ChannelOpened(childSide, parentId, aChildProtocol);
nsAutoPtr<Message> messageForUs(isParent ? parentMsg : childMsg);
nsAutoPtr<Message> messageForOtherSide(!isParent ? parentMsg : childMsg);
if (!aOpenerChannel->Echo(messageForUs.forget()) ||
!aOpenerChannel->Send(messageForOtherSide.forget())) {
CloseDescriptor(parentSide);
CloseDescriptor(childSide);
return false;
}
return true;
}
CrossProcessMutexHandle
CrossProcessMutex::ShareToProcess(ProcessHandle aHandle)
{
HANDLE newHandle;
bool succeeded = ::DuplicateHandle(GetCurrentProcessHandle(),
mMutex, aHandle, &newHandle,
0, FALSE, DUPLICATE_SAME_ACCESS);
if (!succeeded) {
return nullptr;
}
return newHandle;
}