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/* force-elision.h: Automatic enabling of elision for mutexes
Copyright (C) 2013-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* Check for elision on this lock without upgrading. */
#define DO_ELISION(m) \
(__pthread_force_elision \
&& (m->__data.__kind & PTHREAD_MUTEX_NO_ELISION_NP) == 0) \
/* Automatically enable elision for existing user lock kinds. */
#define FORCE_ELISION(m, s) \
if (__pthread_force_elision \
&& (m->__data.__kind & PTHREAD_MUTEX_ELISION_FLAGS_NP) == 0) \
{ \
mutex->__data.__kind |= PTHREAD_MUTEX_ELISION_NP; \
s; \
}
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