Queue.Queue-like class without the busy-wait

[Antoon Pardon]

Op 2005-03-30, Paul Rubin schreef <http>:

>> > I think the best bet for the short term is handling it at the C level,
>> > with sigalarm.  Another way is to have chained sigalarm handlers in
>> > the main thread.
>> 
>> Possible, but I don't have the time to investigate that possibility now.
>
> Actually there's a simple and obvious approach: Linux and Windows both
> already implement semaphore objects with timeouts (see "man semop"
> under Linux).  Other modern Unixes probably also have them.  So I'd
> think it would be straightforward to just make a C module that wraps
> these semaphores with the C API.

I'm not sure that this would be an acceptable approach. I did the man
semop and it indicates this is part of system V IPC. This makes me
fear that semaphores will use file descriptors or other resources
that are only available in a limited amount. Not usefull if you are
talking about thousands of threads.

-- 
Antoon Pardon