Date: Tue, 5 Mar 2002 09:34:37 -0800 (PST) From: Tor Egge <tegge@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/lib/libc/stdlib atexit.c Message-ID: <200203051734.g25HYbZ13632@freefall.freebsd.org>
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tegge 2002/03/05 09:34:37 PST
Modified files:
lib/libc/stdlib atexit.c
Log:
When multiple threads call atexit at the same time, some operations must
be serialized. A mutex is used to protect the critical regions.
sbrk() and brk() are not thread safe. Replace use of sbrk() with
a call to malloc to avoid race when one thread calls atexit
while another thread calls malloc.
Reviewed by: deischen
Revision Changes Path
1.4 +28 -2 src/lib/libc/stdlib/atexit.c
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