diff options
| author | amodra <amodra@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-30 04:02:53 +0000 |
|---|---|---|
| committer | amodra <amodra@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-30 04:02:53 +0000 |
| commit | a28ddb67e7d93f5ba095c28af9a14b991b2cbcfd (patch) | |
| tree | f2b455abcdef142ecdfee68c7c0c647af19edcdd /libgomp/critical.c | |
| parent | df17b94dcaa40e7e13e24a2a8ce6984d70254692 (diff) | |
| download | gcc-a28ddb67e7d93f5ba095c28af9a14b991b2cbcfd.tar.gz | |
* ordered.c (gomp_ordered_sync): Add MEMMODEL_ACQ_REL fence.
* critical.c (GOMP_critical_start): Add MEMMODEL_RELEASE fence.
* config/linux/mutex.h: Use atomic rather than sync builtins.
* config/linux/mutex.c: Likewise. Comment. Use -1 for waiting state.
* config/linux/omp-lock.h: Comment fix.
* config/linux/arm/mutex.h: Delete.
* config/linux/powerpc/mutex.h: Delete.
* config/linux/ia64/mutex.h: Delete.
* config/linux/mips/mutex.h: Delete.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181832 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libgomp/critical.c')
| -rw-r--r-- | libgomp/critical.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libgomp/critical.c b/libgomp/critical.c index daf1ffc2137..414c4221626 100644 --- a/libgomp/critical.c +++ b/libgomp/critical.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2005, 2009 Free Software Foundation, Inc. +/* Copyright (C) 2005, 2009, 2011 Free Software Foundation, Inc. Contributed by Richard Henderson <rth@redhat.com>. This file is part of the GNU OpenMP Library (libgomp). @@ -33,6 +33,8 @@ static gomp_mutex_t default_lock; void GOMP_critical_start (void) { + /* There is an implicit flush on entry to a critical region. */ + __atomic_thread_fence (MEMMODEL_RELEASE); gomp_mutex_lock (&default_lock); } |