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| author | Ulrich Drepper <drepper@redhat.com> | 2007-05-18 00:55:10 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-05-18 00:55:10 +0000 |
| commit | 113ad5fc9192340269d2ce19b896d51309e785ea (patch) | |
| tree | 0028c672ecec9626a07fa3dfc5bcba89b690d2f4 /nptl/pthread_mutex_lock.c | |
| parent | bec51a302f0e7046fcb8c4fcd13ea2969a43a9b7 (diff) | |
| download | glibc-113ad5fc9192340269d2ce19b896d51309e785ea.tar.gz | |
[BZ #4512]
* pthread_mutex_lock.c: Preserve FUTEX_WAITERS bit when dead owner
is detected.
* pthread_mutex_timedlock.c: Likewise.
* pthread_mutex_trylock.c: Likewise.
Patch in part by Atsushi Nemoto <anemo@mba.ocn.ne.jp>.
* Makefile (tests): Add tst-robust9 and tst-robustpi9.
* tst-robust9.c: New file.
* tst-robustpi9.c: New file.
Diffstat (limited to 'nptl/pthread_mutex_lock.c')
| -rw-r--r-- | nptl/pthread_mutex_lock.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c index 52cc47f4cc..1c3ee4fe25 100644 --- a/nptl/pthread_mutex_lock.c +++ b/nptl/pthread_mutex_lock.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -127,6 +127,8 @@ __pthread_mutex_lock (mutex) int newval = id; #ifdef NO_INCR newval |= FUTEX_WAITERS; +#else + newval |= (oldval & FUTEX_WAITERS); #endif newval |