Re: [PATCH 5/4] run-command: implement abort_async for pthreads

On Freitag, 1. April 2011, Erik Faye-Lund wrote:

On Fri, Apr 1, 2011 at 9:42 PM, Johannes Sixt [off-list ref] wrote:

quoted

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.

In the paragraph before the bulleted list at the end of "Cancellation Points":

"...If a thread has cancelability enabled and a cancellation request is made 
with the thread as a target while the thread is suspended at a cancellation 
point, the thread shall be awakened and the cancellation request shall be 
acted upon..."

-- Hannes