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[BZ #6955]

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2008-11-01  Ulrich Drepper  <drepper@redhat.com>
	[BZ #6955]
	* pthread_mutex_lock.c: Add support for private PI mutexes.
	* pthread_mutex_timedlock.c: Likewise.
	* pthread_mutex_trylock.c: Likewise.
	* pthread_mutex_unlock.c: Likewise.
	Patch mostly by Ben Jackson <ben@ben.com>.
This commit is contained in:
Ulrich Drepper
2008-11-01 19:51:41 +00:00
parent 64647f9aa8
commit efac1fce62
5 changed files with 44 additions and 11 deletions
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12
nptl/pthread_mutex_trylock.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
/* Copyright (C) 2002, 2003, 2005-2007, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -231,9 +231,13 @@ __pthread_mutex_trylock (mutex)
/* The mutex owner died. The kernel will now take care of
everything. */
int private = (robust
? PTHREAD_ROBUST_MUTEX_PSHARED (mutex)
: PTHREAD_MUTEX_PSHARED (mutex));
INTERNAL_SYSCALL_DECL (__err);
int e = INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
FUTEX_TRYLOCK_PI, 0, 0);
__lll_private_flag (FUTEX_TRYLOCK_PI,
private), 0, 0);
if (INTERNAL_SYSCALL_ERROR_P (e, __err)
&& INTERNAL_SYSCALL_ERRNO (e, __err) == EWOULDBLOCK)
@ -274,7 +278,9 @@ __pthread_mutex_trylock (mutex)
INTERNAL_SYSCALL_DECL (__err);
INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
FUTEX_UNLOCK_PI, 0, 0);
__lll_private_flag (FUTEX_UNLOCK_PI,
PTHREAD_ROBUST_MUTEX_PSHARED (mutex)),
0, 0);
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
return ENOTRECOVERABLE;