On Freitag, 1. April 2011, Erik Faye-Lund wrote:
> On Fri, Apr 1, 2011 at 10:05 PM, Jeff King <peff@xxxxxxxx> wrote:
> > On Fri, Apr 01, 2011 at 09:57:14PM +0200, Erik Faye-Lund wrote:
> >> > But this does not help the case at hand in any way. How would you
> >> > interrupt a thread that is blocked in ReadFile()? The point of
> >> > pthread_cancel() is that it interrupts blocked system calls
> >>
> >> There is no mention of such a guarantee in POSIX (section 2.9.5 Thread
> >> Cancellation), so relying on that is undefined behavior.
> >
> > Eh? My pthreads(7) says that read() is required to be a cancellation
> > point acrroding to POSIX. I didn't dig up the actual reference in the
> > standard, though.
>
> I don't understand where the implementor would get that from after
> reading through it, but if there's something I've missed we can fix it
> by replacing my pthread_cancel with this, no?
>
> static inline int pthread_cancel(pthread_t thread)
> {
> SetEvent(thread.cancel_event);
> CancelSynchronousIo(thread.handle);
> }
Do I deserve this? There *is* a function that does what we need. I get what I
deserve when I don't study all 100,000 functions in the manual...
Wait a minute! I *did* study 100,000 functions. This is one of the 25,000
functions that are new in Vista... Those I haven't studied, yet.
;)
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