Make a thread wait for either a Timer or a Signal?

问题

I am writing a Multithreaded Python application, in which each thread should wake up under the following circumstances:

1. A signal from a main thread
2. A Timer call started by itself

In other words, threads should wake up according to a timer they set for themselves, and be able to respond to a signal from a managing thread whenever a relevant event appears.

What's the idiomatic way to implement a dual (Timer/Event) wake-up mechanism?

回答1:

Well, threading.Event, has a wait method, which takes a timeout. So you could do something as simple as

In main thread:

sleepEvent = threading.Event()

pass that to your other threads, and in them:

sleepEvent.wait(10) # wait for up to 10 seconds

Now your thread will either wait 10 seconds (like a timer) or will clear the wait if the main thread calls

sleepEvent.set()

来源：https://stackoverflow.com/questions/27463626/make-a-thread-wait-for-either-a-timer-or-a-signal