- def send_counter_loop(socket, counter, kill):
- """Every 5 seconds, send state of counter[0] until kill[0] set."""
- while not kill[0]:
- caught_send(socket, 'COUNTER ' + str(counter[0]))
- time.sleep(5)
-
- def handle_message(message):
- """Evaluate message for tasks to perform, yield result.
-
- Accepts one command: FIB, followed by positive integers, all tokens
- separated by whitespace. Will calculate and return for each such
- integer n the n-th Fibonacci number. Uses multiprocessing to
- perform multiple such calculations in parallel. Yields a
- 'CALCULATING …' message before the calculation starts, and finally
- yields a message containing the results. (The 'CALCULATING …'
- message coming before the results message is currently the main
- reason this works as a generator function using yield.)
-
- When no command can be read into the message, just yields a 'NO
- COMMAND UNDERSTOOD:', followed by the message.
- """
- from multiprocessing import Pool
- tokens = message.split(' ')
- if tokens[0] == 'FIB':
- msg_fail_fib = 'MALFORMED FIB REQUEST'
- if len(tokens) < 2:
- yield msg_fail_fib
- return
- numbers = []
- for token in tokens[1:]:
- if token != '0' and token.isdigit():
- numbers += [int(token)]
- elif token == '':
- continue
- else:
- yield msg_fail_fib
- return
- yield 'CALCULATING …'
- reply = ''
- with Pool(len(numbers)) as p:
- results = p.map(fib, numbers)
- reply = ' '.join([str(r) for r in results])
- yield reply
- return
- yield 'NO COMMAND UNDERSTOOD: %s' % message
+ def send_queue_messages(socket, queue_in, thread_alive):
+ """Send messages via socket from queue_in while thread_alive[0]."""
+ while thread_alive[0]:
+ try:
+ msg = queue_in.get(timeout=1)
+ except queue.Empty:
+ continue
+ caught_send(socket, msg)