diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2008-10-06 16:47:10 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2008-10-06 16:47:10 +0000 |
| commit | af62b44029c208376086940976cc386c9921f086 (patch) | |
| tree | 60dc5c4695a62b78a6c80d81238859d63a2f327b /nptl/sysdeps | |
| parent | 2fdde3b920702b10edcd1771f5564ca58f2aa900 (diff) | |
| download | glibc-af62b44029c208376086940976cc386c9921f086.zip glibc-af62b44029c208376086940976cc386c9921f086.tar.gz glibc-af62b44029c208376086940976cc386c9921f086.tar.bz2 | |
* sysdeps/unix/sysv/linux/fork.c (__libc_fork): Add memory barrier
to force runp->refcntr to be read from memory.
Diffstat (limited to 'nptl/sysdeps')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/fork.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/fork.c b/nptl/sysdeps/unix/sysv/linux/fork.c index 1683de8..524d72c 100644 --- a/nptl/sysdeps/unix/sysv/linux/fork.c +++ b/nptl/sysdeps/unix/sysv/linux/fork.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -64,6 +64,9 @@ __libc_fork (void) struct fork_handler *runp; while ((runp = __fork_handlers) != NULL) { + /* Make sure we read from the current RUNP pointer. */ + atomic_full_barrier (); + unsigned int oldval = runp->refcntr; if (oldval == 0) |