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MyASPN >> Mail Archive >> tcl-core
tcl-core
Re: [TCLCORE] Self-simplifying pipes on Windows ?
by Alexandre Ferrieux other posts by this author
May 10 2008 3:01AM messages near this date
Re: [TCLCORE] Self-simplifying pipes on Windows ? | Re: [TCLCORE] Self-simplifying pipes on Windows ?
On 5/8/08, David Gravereaux <davygrvy@[...].com>  wrote:

>  In all, it really just comes down to the use of the very evil
>  TerminateThread().  It would be so much easier to fix if something simple
>  like a call to CloseHandle() would interrupt ReadFile() or some other
>  measure, but I don't know if such an attempt could pop it loose. I'm sure I
>  tried CloseHandle() and a re-wait on the exit status in place of the
>  TerminateThread(), but it would be worth a second try.

Unfortunately it still doesn't work.
Worse, Vista and Server2008 bring a new syscall (they don't have
enough yet) called "CancelSynchronousIo" and doing exactly what we
want. This is rather bad news, because it is a rock-solid proof that
there was no other way...

Moreover, even in future versions of Tcl, when Vista is the oldest
supported version, I believe we won't use it either, since we'll be
using waitable handles and no extra threads !

-Alex

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