Question

I have a QThread that reads from a socket and sends a signal (QT signal) when there are any data available.
This would be easy with blocking read(2), but i need to be able to stop the thread from outside without waiting for too long.

If I were using pthread I would use pselect and pthread_kill(thread_id, some_signal), but QThread doesn’t
seem to have any similar methods. And adding a dependcy on pthread to this project doesn’t seem to elegant.

I also don’t want to use the other ugly methods like constantly trying to read from the socket with some relatively small timeout.

Edit: The sockets are not TCP, but bluetooth L2CAP.

Answer 1

A not too elegant, but simple and working solution:
Create a pipe and let select wait for either the pipe or my socket. This way I can stop the wait anytime by writing something to the pipe.