critical section

[lynx]

On Sun, 02 Mar 2003 16:51:14 +0000, John Burton wrote:

> Are there any python facilities for synchronising access to a resource from
> two seperate processes running python programs?

i'd think that depends on what kind of resources, and what kind of
processes. if you're thinking of threaded programming, then look at the
documentation for the thread and threading modules, they've got locks and
semaphores of several kinds. if you're thinking of synchronizing access to
a file from several separate "heavyweight" processes, then you might just
have to drop to OS-specific facilities; i don't know of any generic
replacement for the fcntl module on unix, for example.

you might also look into the mutex module, which is platform-generic,
though the documentation on it in the library reference seems kindof
skimpy. from reading it alone, i don't know how you'd pass one of the
mutexes that module can create between processes, though i assume there
has to be some way to do it.

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