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From: Howard Hinnant (hinnant_at_[hidden])
Date: 2007-10-30 18:24:32

On Oct 30, 2007, at 2:03 PM, Phil Endecott wrote:

> Howard Hinnant wrote:
>> Actually thread cancellation is old. Many (not all) thread API's
>> have some form or another of cancellation. That being said, the
>> compromise reached at the Kona meeting 4 weeks ago was to remove
>> cancellation (or interruption) from the proposal. This removal is
>> reflected in N2411.
> That's unfortunate. I'm a little confused about how completely
> removing it is a "compromise"!
> This is something that I need. Does anyone know of an alternative
> (POSIX-compatible) C++ thread library that offers cancellation? If
> not
> I may try to write on.

A partial workaround is to religiously use cv::timed_wait, as opposed
to cv::wait, so that you can wake up and discover if you're supposed
to quit every once in a while. It should be easy to set up a
"cancel" flag that a thread can periodically check. For example you
could just pass a ref(bool) as one of the arguments in your thread-
main function and reference that argument with thread local data.
One will still have trouble waking from blocked system calls, but
that's life.


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