[Twisted-Python] callLater

[Manlio Perillo]

Hi.

I need to implement a function for scheduling function calls at specific
times.

A simple implementation is:

def callAt(when):
    from twisted.internet import reactor

    delta = when - datetime.now()
    delay = delta.days * 24 * 3600 + delta.seconds + delta.microseconds
/ 1000000.

    return reactor.callLater(delay)


However I'm going to have lots of this scheduled calls, many of these
are far away in the future.

Can this be a problem?

An alternative implementation is to use LoopingCall that, say, every 15
minutes, check the scheduled functions.
Here I can think of some optimization, to avoid a linear search.


Thanks  Manlio Perillo