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Date:      Fri, 10 Aug 2001 21:03:48 -0500
From:      Alfred Perlstein <bright@mu.org>
To:        Michael Robinson <robinson@netrinsics.com>
Cc:        current@freebsd.org, hackers@freebsd.org
Subject:   Re: _sigprocmask in malloc.c causes full file table?
Message-ID:  <20010810210348.T85642@elvis.mu.org>
In-Reply-To: <200108110115.f7B1F4100321@netrinsics.com>; from robinson@netrinsics.com on Sat, Aug 11, 2001 at 09:15:04AM %2B0800
References:  <200108110115.f7B1F4100321@netrinsics.com>

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* Michael Robinson <robinson@netrinsics.com> [010810 20:17] wrote:
> I'm currently trying to deal with the problem where malloc/free in a 
> signal handler will crash (in my case, the X window server) if a signal
> arrives during malloc or free.

Yes, you are not supposed to call malloc/free from a signal handler unless
you know exactly what you're doing when you do so.

> Am I doing something completely boneheaded, or is this an undocumented 
> subtle interaction?

You're expecting calls to free/malloc to work from within an async
signal handler, so yes, you're being a bit boneheaded. :)

-- 
-Alfred Perlstein [alfred@freebsd.org]
Ok, who wrote this damn function called '??'?
And why do my programs keep crashing in it?

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