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29 lines
1.2 KiB
C
29 lines
1.2 KiB
C
/* force-elision.h: Automatic enabling of elision for mutexes
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Copyright (C) 2015-2016 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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#ifdef ENABLE_LOCK_ELISION
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/* Automatically enable elision for existing user lock kinds. */
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#define FORCE_ELISION(m, s) \
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if (__pthread_force_elision \
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&& (m->__data.__kind & PTHREAD_MUTEX_ELISION_FLAGS_NP) == 0) \
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{ \
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mutex->__data.__kind |= PTHREAD_MUTEX_ELISION_NP; \
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s; \
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}
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#endif
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