Why are the methods sys.exit(), exit(), raise SystemExit not working?
I need an alternative to kill the python script while inside a thread function. My intention is killing the server when the client enters a 0... Is this not working because the threads haven't been terminated? Here is my code:
socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM); print 'Socket created' try: socket.bind((HOST, PORT)) except socket.error, message: print 'Bind statement failed. ERROR: ' + str(message) + ' Message: ' + message sys.exit() print 'Socket Binding Successful' socket.listen(10) print 'Socket is currently listening' def clientThread(connection): while 1: data = connect.recv(1024) try: quit = int(data) except: quit = 3 if quit == 0: print 'Closing the connection and socket...' connect.close() socket.close() sys.exit(); //Alternative needed here... break reply = 'Ok....' + data if not data: break connect.sendall(reply) while 1: #forever loop connect, address = socket.accept() print 'Just connected with ' + address + ' : ' + str(address) start_new_thread(clientThread, (connect,)) socket.close()
Asked by: Julian555 | Posted: 06-12-2021
The problem is that all
sys.exit() does is raise
SystemExit. Since this happens in a worker thread, the effect is to stop that thread (exceptions don't propagate across threads).
You could trying signalling to the main thread that the script needs to terminate, either though some mechanism of your own, or by calling
For a sledgehammer approach, call
You can just
raise SystemExit but that seems really harsh. Maybe some means of co-operative threading would work (ie: a queue with a sentinel)
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