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    SubjectRe: [PATCH] /dev/epoll update ...
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    > Stevens [UNPV1, in chapter on nonblocking accept] suggests that readiness
    > notifications from the OS should only be considered hints, and that user
    > programs should behave properly even if the OS feeds it false readiness
    > events.

    For accept this is specifically and definitely true. A pending connection
    can go away before you accept it. What happens then is rather OS specific -
    BSD unix gives you a socket that has died - which can be handy and avoids
    the problem but others don't all do the same
    -
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