47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
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# Wire up a ping/pong counting loop between 2 subprocesses.
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from __future__ import print_function
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import mitogen.core
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import mitogen.select
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@mitogen.core.takes_router
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def ping_pong(control_sender, router):
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with mitogen.core.Receiver(router) as recv:
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# Tell caller how to communicate with us.
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control_sender.send(recv.to_sender())
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# Wait for caller to tell us how to talk back:
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data_sender = recv.get().unpickle()
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n = 0
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while (n + 1) < 30:
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n = recv.get().unpickle()
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print('the number is currently', n)
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data_sender.send(n + 1)
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@mitogen.main()
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def main(router):
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# Create a receiver for control messages.
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with mitogen.core.Receiver(router) as recv:
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# Start ping_pong() in child 1 and fetch its sender.
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c1 = router.local()
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c1_call = c1.call_async(ping_pong, recv.to_sender())
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c1_sender = recv.get().unpickle()
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# Start ping_pong() in child 2 and fetch its sender.
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c2 = router.local()
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c2_call = c2.call_async(ping_pong, recv.to_sender())
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c2_sender = recv.get().unpickle()
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# Tell the children about each others' senders.
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c1_sender.send(c2_sender)
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c2_sender.send(c1_sender)
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# Start the loop.
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c1_sender.send(0)
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# Wait for both functions to return.
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mitogen.select.Select.all([c1_call, c2_call])
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