FRunnable thread freezes editor

Development Programming & Scripting
1

Hi,

I’m creating a FRunnable on UGameInstance.Init() with FRunnableThread::Create

In Run() function I’m reading from a socket with recv and the thread gets locked waiting for data.
If I stop the editor it freezes waiting for thread to finalize.
I override Shutdown() and BeginDestroy() in UGameInstance closing the socket with closesocket but this functions are never called.

Anybody knows why this functions are never called and how can I solve it?
Thank you in advance.

2

Could you show some code of your run function so that I know what youre doing? It’s possible that run is never finished and the main thread will freeze trying to destroy the thread when waiting for it to finish first.

3

Sure… As I said recv func locks the thread. If the main thread tries to destroy it I don’t understand how the cleanup works because Stop() is never called.

uint32 SocketManager::Run()
{
	while (true)
	{
		int32 iResult = recv(wsSocket, recvbuf, BUFLEN, 0);
		if (iResult <= 0)
		{
			break;
		}
	}

	return 0;
}

void SocketManager::Stop()
{
	if (wsSocket != INVALID_SOCKET)
	{
		closesocket(wsSocket);
		wsSocket = INVALID_SOCKET;
	}
}
4

Can anybody help me?
If anyone knows any other way to do it I would be very grateful that inicase me how.
Thank you.

5

Resolved. Thanks.

6

How did you solve the problem??

7

This was probably fixed by adding a sleep in the while loop:

FPlatformProcess::Sleep(0.001f);