On Sun, Oct 13, 2013 at 10:24:17PM -0700, David Strauss wrote: > source_io_register errors out with EEXIST, but that's supposed to be > harmless for epoll [1]: > > Q1: What happens if you add the same fd to an epoll_set twice? > A1: You will probably get EEXIST. However, it is possible that two > threads may add the same fd twice. This is a harmless condition. Shouldn't a "new" fd be handled by one thread always, making this scenario unlikely?
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