Messages in this thread | | | From | "David Schwartz" <> | Subject | RE: Thread safety for epoll/libaio | Date | Tue, 28 Feb 2006 19:48:46 -0800 |
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> I apologize if I should not post this on LKML, but there seems to be > some lack of documentation for using epoll/AIO with threads. Are > these interfaces thread-safe? Can I use them safely in the following > way:
They are thread safe.
> Thread A: while(1) { io_getevents(); ... } > // wait forever until an event occurs, then handles the event and loop > > Thread B: while(1) { epoll_wait(); ... } > // same as thread A > > Thread C: ... io_submit(); ... > > Thread D: ... epoll_ctl(); .... > > Suppose thread B calls epoll_wait and blocks before thread D calls > epoll_ctl. Is it safe to do so? Will thread B be notified for the > event submitted by thread D? Thread A and C pose the same question > for AIO.
Using the interfaces this way is pretty much their entire point. They'd be almost useless if you couldn't use them in this way.
DS
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