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    SubjectRe: [PATCH] rfc: threaded epoll_wait thundering herd
    Ulrich Drepper wrote:
    > On 5/7/07, Davi Arnaut <davi@haxent.com.br> wrote:
    >> See Linus's message on this same thread.
    >
    > No. I'm talking about the userlevel side, not kernel side.

    So you probably knew the answer before asking the question.

    > If a thread is canceled *after* it returns from the syscall but before
    > it reports the event to the call (i.e., while still in the syscall
    > wrapper, thread cancellation rules require a check there) the event is
    > lost.

    Exactly. The same happens with sigwaitinfo(), and various other.

    > Linus was only talking about the kernel side and how in the exit path
    > such events are not lost.

    Anyway, we could extend epoll to be mmapable...

    --
    Davi Arnaut
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