| /* 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; \ |
| } |
