linux-kernel - RE: Health monitor of a multi-threaded process

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Message-ID: <MDEHLPKNGKAHNMBLJOLKGEEIGLAC.davids@webmaster.com>
Date:	Mon, 10 Sep 2007 13:50:14 -0700
From:	"David Schwartz" <davids@...master.com>
To:	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: RE: Health monitor of a multi-threaded process

> >     4) Threads are not in any infinite loop.

> This requires solving the Halting Problem.  If your management is
> demanding this
> feature, I suggest informing them that it is mathematically impossible.

Christ, these academics! They take real world problems that engineers
actually *solve* every day and then "prove" they're impossible.

Actually, it's trivial to solve this. Just wait. If the thread terminates,
it wasn't in an infinite loop.

If you've got the budget, I believe SGI has a machine that can do an
infinite loop in less than five seconds. That will save a lot of waiting.

DS

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