From: John Max Skaller (skaller_at_[hidden])
Date: 2001-08-14 10:03:28
Alexander Terekhov wrote:
> > > Calling join() multiple times on this object is valid...
> > > any call made after the first simply exits immediately since all
> > > the cleanup has already been handled during the first call.
> NOT OK! (unless you have made it atomic, which i doubt) here you
> introduce different semantics for subsequent calls (could be done
> from different thread(s)). it should provide the same behavior
> (wait until term. is completed) in all cases (for all joining
> threads), IMHO.
I'm hope that's what Bill meant: the postcondition
is the same for all calls: the thread is terminated.
I note the clever semantics: this call would have to
throw an exception if the thread had been detached.
But there's no call to detach a thread, so it cannot happen:
threads are detached simply by not calling join.
-- John (Max) Skaller, mailto:skaller_at_[hidden] 10/1 Toxteth Rd Glebe NSW 2037 Australia voice: 61-2-9660-0850 New generation programming language Felix http://felix.sourceforge.net Literate Programming tool Interscript http://Interscript.sourceforge.net
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