Re: [patch 2/4] new timerfd API v2 - new timerfd API

From: Jonathan Corbet
Date: Tue Sep 25 2007 - 12:40:36 EST

One quick question:

> Like the previous timerfd API implementation, read(2) and poll(2) are supported
> (with the same interface).

Looking at that interface, it appears that a process doing a read() on a
timerfd with no timer set will block for a very long time. It's an
obvious "don't do that" situation, but perhaps we could help an
occasional developer get a clue by returning something like -EINVAL when
the timer has not been set?


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