From owner-cvs-all  Tue Mar  5  9:34:41 2002
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From: Tor Egge <tegge@FreeBSD.org>
Date: Tue, 5 Mar 2002 09:34:37 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/lib/libc/stdlib atexit.c
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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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