[Twisted-Python] Concurrent data access with select() safe?
mattcampbell at pobox.com
Tue Aug 13 14:28:42 EDT 2002
On Wed, Aug 14, 2002 at 02:09:19AM +0800, Mukhsein Johari wrote:
> I've managed to get a working custom webserver thanks to Donovan. My next
> question is (perhaps more due to my ignorance of how select works) how do you
> control concurrent access to data?
There is no concurrent access to data in a single-threaded,
event-based system, because the event handlers which are run by
the main loop are never interrupted. A function always runs to
completion, as if it's always running in a critical section. (This
is also why no blocking system calls should be performed except in
the main loop itself.)
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