Messages in this thread | | | Date | Tue, 15 Oct 2002 15:01:25 -0700 | From | John Gardiner Myers <> | Subject | Re: [PATCH] async poll for 2.5 |
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Davide Libenzi wrote:
>Why would you need to use threads with a multiplex-like interface like >/dev/epoll ? > Because in some applications processing an event can cause the thread to block, potentially for a long time. Multiple threads are needed to isolate that block to the context associated with the event.
> while (read() == EGAIN) > wait(POLLIN); > > Assuming registration of interest is inside wait(), this has a race. If the file becomes readable between the time that read() returns and the time that wait() can register interest, the connection will hang.
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