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    SubjectRe: kernel thread support - LWP's
    On Fri, Jul 16, 1999 at 02:18:27PM +1000, Richard Gooch wrote:
    > I'd say the first thing to do is add a way of killing just one task in
    > a process group. Probably that requires a new syscall. Alternatively,
    > we can make it a flag bit to the signal number. Making it a flag bit
    > has advantages (see below).

    I don't see any way of using process groups that would allow
    this to work:

    $ make-audio-samples | tee foo | bplay

    (bplay is 2-threaded for buffering reasons, IIRC)

    and which would also let 'bplay' use Posix threads and
    their associated signal semantics. A new clone flag
    defining 'signal groups' has the advantage that it lets the
    process decide what signal semantics will be applied to it.


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