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Re: EINTR error in SunOS

From: Greg Stark <gsstark(at)mit(dot)edu>
To: "Qingqing Zhou" <zhouqq(at)cs(dot)toronto(dot)edu>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: EINTR error in SunOS
Date: 2006-01-01 07:36:22
Message-ID: 87aceg762x.fsf@stark.xeocode.com (view raw or flat)
Thread:
Lists: pgsql-hackers
"Qingqing Zhou" <zhouqq(at)cs(dot)toronto(dot)edu> writes:

> The problem of above is if a signal sneaks in, these syscalls will fail. 
> With a retry, we can fix it.

It's a bit stickier than that but only a bit. If you just retry then you're
saying users have to use kill -9 to get away from the situation. For some
filesystem operations that may be the best we can do. But for most it ought to
be possible to CHECK_FOR_INTERRUPTS() and handle the regular signals like C-c
or kill -1 normally. Even having the single backend exit (to avoid file
resource leaks) is nicer than having to restart the entire instance.

-- 
greg


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