Re: [c++-pthreads] Re: thread-safety definition

[Ted Baker <baker@xxxxxxxxxx>]

The 2003 Single Unix Specification, and POSIX, say:

"...The thread invokes the cancellation cleanup handler with
cancellation disabled until the last cancellation cleanup handler
returns...."

--Ted

On Mon, Jan 12, 2004 at 02:20:42PM +0100, Alexander Terekhov wrote:
> Fergus Henderson wrote:
> [...]
> > > This cannot happen if cancellation is automagically disabled during
> > > execution of (all) destructors, along with the stack unwinding code
> > > that is performed during exception processing.
> > 
> > If all cleanup is done via destructors (or pthread_cleanup_push,
> > which can be handled similarly), you are right.
> 
> AFAIK, POSIX doesn't disable cancellation when thread cleanup handler 
> is invoked by pthread_cleanup_pop() call with a non-zero execute 
> argument (cancellation is disabled when the thread exits [that is, 
> calls pthread_exit()] or acts upon a cancellation request delivery).
> 
> I do it "manually".
> 
> regards,
> alexander.