breaking out from socket select

Question

I have a loop which basically calls this every few seconds (after the timeout):

 while(true){

    if(finished)
       return;

    switch(select(FD_SETSIZE,         


        

Answer 1

Yes, you create a connected pair of sockets. Then thread B writes to one side of socket and thread A adds the other side socket to select. So once B writes to socket A exits select, do not forget to read this byte from socket.

This is the most standard and common way to interrupt selects.

Notes:

Under Unix, use socketpair to create a pair of sockets, under windows it is little bit tricky but googling for Windows socketpair would give you samples of code.