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Viewing changes to ports/sysdeps/arm/nptl/pthread_spin_trylock.c

  • Committer: Package Import Robot
  • Author(s): Adam Conrad
  • Date: 2013-01-10 18:39:35 UTC
  • mfrom: (1.5.2) (4.4.24 experimental)
  • Revision ID: package-import@ubuntu.com-20130110183935-afsgfxkmg7wk5eaj
Tags: 2.17-0ubuntu1
https://launchpad.net/bugs/1085342
https://launchpad.net/bugs/613662
* Merge with Debian, bringing in a new upstream and many small fixes:
  - patches/any/cvs-malloc-deadlock.diff: Dropped, merged upstream.
  - patches/ubuntu/lddebug-scopes.diff: Rebase for upstream changes.
  - patches/ubuntu/local-CVE-2012-3406.diff: Rebased against upstream.
  - patches/ubuntu/no-asm-mtune-i686.diff: Fixed in recent binutils.
* This upstream merge fixes a nasty hang in pulseaudio (LP: #1085342)
* Bump MIN_KERNEL_SUPPORTED to 2.6.32 on ARM, now that we no longer
  have to support shonky 2.6.31 kernels on imx51 babbage builders.
* Drop patches/ubuntu/local-disable-nscd-host-caching.diff, as these
  issues were apparently resolved upstream a while ago (LP: #613662)
* Fix the compiled-in bug URL to point to launchpad.net, not Debian.

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ports/sysdeps/arm/nptl/pthread_spin_trylock.c
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/* Copyright (C) 2008 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library.  If not, see
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   <http://www.gnu.org/licenses/>.  */
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#include <errno.h>
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#include <atomic.h>
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#include "pthreadP.h"
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int
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pthread_spin_trylock (pthread_spinlock_t *lock)
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{
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  return atomic_compare_and_exchange_val_acq (lock, 1, 0) ? EBUSY : 0;
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}