diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/force-elision.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/force-elision.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/force-elision.h b/sysdeps/unix/sysv/linux/powerpc/force-elision.h new file mode 100644 index 0000000000..3da576b944 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/force-elision.h @@ -0,0 +1,28 @@ +/* force-elision.h: Automatic enabling of elision for mutexes + Copyright (C) 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/>. */ + +#ifdef ENABLE_LOCK_ELISION +/* 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; \ + } +#endif |