Re: To thread or not to thread ?
JohnQ wrote:
"James Kanze" <james.kanze@gmail.com> wrote in message
This is very different from pthread_cancel. Although one would
normally expect functions with names like terminate and cancel
to behave similarly, pthread_cancel doesn't really cancel the
thread; it just sets a global flag that the thread can test, and
unblocks any blocking system calls.
Oh, well there you go. That's what we've been looking for all along. On
Windows that option doesn't exist so one has to analyze the situation and do
something program-specific or use what another poster mentioned in another
thread: block on multiple events via WaitForMultipleObjects. That doesn't
help break out of looping threads though.
Actually it does. We already agreed that orderly shutdown is preferred
over disruptive. But intuitively, if a thread is not blocked, any type
of shutdown at that point is disruptive - only the thread itself can
know what must be done to "unwind" and make it not.
The flag that James mentioned is essentially the event that we are
speaking of. It is not given - you have to build it into your
framework.
-Le Chaud Lapin-
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