cross platform alternative for signal.SIGALRM?

[Marko Rauhamaa]

Ulli Horlacher <framstag at rus.uni-stuttgart.de>:

> Hmmm... not so simple for me. My test code:
>
> from time import *
> import threading
> import sys
>
> def hello(): 
> raise ValueError("hello!!!")
>
> t = threading.Timer(3.0,hello)
> t.start()
> try:
>   print "start"
>   sleep(5)
>   print "end"
> except ValueError as e:
>   print e.args[0]
>   sys.exit(1)

Correct. The timer callback function (hello) would be called in a
separate thread. An exception raised in one thread cannot be caught in
the main thread. In general, there is no way for a thread to interrupt a
sibling thread that is in a blocking function call.


Marko