aiotimer

AsyncIO compatible periodic timer. Linux only and very alpha API.

Example

The timer is implemented as a straightforward protocol similar to how the asyncio's network protocols are handled:

class MyTimer(aiotimer.Protocol):
    def __init__(self):
        self.counter = 0

    def timer_started(self, timer):
        self.timer = timer

    def timer_ticked(self):
        # Callback triggered when the timer interval elapses
        ...

    def timer_overrun(self):
        # Callback triggered if the timer_ticked callback runtime
        # should exceed the timer interval. Return True to
        # reschedule, otherwise the timer is aborted.
        return True

    def error_received():
        ...

The protocol can then be used to create a new timer:

# Schedule once every 10th of a second
aiotimer.create_timer(MyTimer, 0.1, loop=loop)