linux-kernel - Re: Suggested addition to epoll interface

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Message-ID: <adak500f4z2.fsf@cisco.com>
Date:	Tue, 15 Sep 2009 11:16:49 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	adi hodos <thefatredguy@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Suggested addition to epoll interface - epoll_post_notification()


 > I have been playing with epoll lately and I would like to make a suggestion
 > regarding the epoll interface.
 > It would be nice to have a function to wake up a thread/process that is blocked
 > on an epoll_wait() call and sent it some
 > user defined data in the form of a struct epoll_event parameter ( something
 > similar with PostQueuedCompletionStatus() from Windows ).

You might have a look at eventfd() which creates an fd that can be used
to signal from one thread to another (and which can be waited on with epoll).

 - R.
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