Re: Problem killing my threads :)
Re: Problem killing my threads :)
- Subject: Re: Problem killing my threads :)
- From: Guillaume Outters <email@hidden>
- Date: Mon, 23 Sep 2002 21:24:31 +0200
Le lundi 23 septembre 2002, ` 20:57 PM, Aram Greenman a icrit :
I *think* the operation would always be atomic if the variable assigned
to was a single-byte type (i.e. char), but I'm not sure.
I based my assumption on the fact that for this kind of flag, he just
needs one bit being set (and read back by the thread). And I think that
on any computer since, well let's tell 1946, the bit is atomic :-)
The effective problem is when to do detection; if the thread is some
kind of runloop with blocking system calls (NSRunLoop or select or
poll), doing so won't resolve the question. There will be some need of
either a periodic verification using timers in runloop or timeouts for
select, or to have a "communication channel" between both threads, like
DO or a pipe watched by the poll(), that can "awake" the thread.
Oh, BTW, could Unix guys tell me if a signal would ensure any
select()/poll() on any thread exits with an EINTR?
--
Guillaume Outters
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