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@@ -1,5 +1,4 @@
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-/* Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009
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- Free Software Foundation, Inc.
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+/* Copyright (C) 2005-2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@@ -9,27 +8,29 @@
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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- License along with the GNU C Library; if not, see
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+ License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _LOWLEVELLOCK_H
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#define _LOWLEVELLOCK_H 1
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-#ifndef __ASSEMBLER__
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#include <time.h>
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#include <sys/param.h>
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#include <bits/pthreadtypes.h>
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+#include <atomic.h>
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+#include <sysdep.h>
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#include <bits/kernel-features.h>
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-#endif
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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+#define FUTEX_REQUEUE 3
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#define FUTEX_CMP_REQUEUE 4
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#define FUTEX_WAKE_OP 5
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+#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1)
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#define FUTEX_LOCK_PI 6
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#define FUTEX_UNLOCK_PI 7
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#define FUTEX_TRYLOCK_PI 8
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@@ -40,13 +41,11 @@
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#define FUTEX_BITSET_MATCH_ANY 0xffffffff
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-#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1)
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-
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/* Values for 'private' parameter of locking macros. Yes, the
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definition seems to be backwards. But it is not. The bit will be
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reversed before passing to the system call. */
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-#define LLL_PRIVATE 0
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-#define LLL_SHARED FUTEX_PRIVATE_FLAG
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+#define LLL_PRIVATE 0
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+#define LLL_SHARED FUTEX_PRIVATE_FLAG
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#if !defined NOT_IN_libc || defined IS_IN_rtld
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@@ -73,347 +72,222 @@
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# endif
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#endif
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-#ifndef __ASSEMBLER__
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-/* Initializer for compatibility lock. */
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-#define LLL_LOCK_INITIALIZER (0)
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-#define LLL_LOCK_INITIALIZER_LOCKED (1)
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-#define LLL_LOCK_INITIALIZER_WAITERS (2)
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-
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-extern int __lll_lock_wait_private (int val, int *__futex)
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- attribute_hidden;
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-extern int __lll_lock_wait (int val, int *__futex, int private)
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- attribute_hidden;
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-extern int __lll_timedlock_wait (int val, int *__futex,
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- const struct timespec *abstime, int private)
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- attribute_hidden;
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-extern int __lll_robust_lock_wait (int val, int *__futex, int private)
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- attribute_hidden;
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-extern int __lll_robust_timedlock_wait (int val, int *__futex,
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- const struct timespec *abstime,
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- int private)
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- attribute_hidden;
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-extern int __lll_unlock_wake_private (int *__futex) attribute_hidden;
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-extern int __lll_unlock_wake (int *__futex, int private) attribute_hidden;
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-
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-#define lll_trylock(futex) \
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- ({ unsigned char __ret; \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%1,r2\n\
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- cmp/eq r2,%3\n\
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- bf 1f\n\
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- mov.l %2,@%1\n\
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- 1: mov r1,r15\n\
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- mov #-1,%0\n\
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- negc %0,%0"\
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- : "=r" (__ret) \
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- : "r" (&(futex)), \
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- "r" (LLL_LOCK_INITIALIZER_LOCKED), \
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- "r" (LLL_LOCK_INITIALIZER) \
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- : "r0", "r1", "r2", "t", "memory"); \
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- __ret; })
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-
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-#define lll_robust_trylock(futex, id) \
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- ({ unsigned char __ret; \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%1,r2\n\
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- cmp/eq r2,%3\n\
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- bf 1f\n\
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- mov.l %2,@%1\n\
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- 1: mov r1,r15\n\
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- mov #-1,%0\n\
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- negc %0,%0"\
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- : "=r" (__ret) \
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- : "r" (&(futex)), \
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- "r" (id), \
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- "r" (LLL_LOCK_INITIALIZER) \
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- : "r0", "r1", "r2", "t", "memory"); \
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- __ret; })
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-
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-#define lll_cond_trylock(futex) \
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- ({ unsigned char __ret; \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%1,r2\n\
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- cmp/eq r2,%3\n\
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- bf 1f\n\
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- mov.l %2,@%1\n\
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- 1: mov r1,r15\n\
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- mov #-1,%0\n\
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- negc %0,%0"\
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- : "=r" (__ret) \
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- : "r" (&(futex)), \
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- "r" (LLL_LOCK_INITIALIZER_WAITERS), \
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- "r" (LLL_LOCK_INITIALIZER) \
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- : "r0", "r1", "r2", "t", "memory"); \
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- __ret; })
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-
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-#define lll_lock(futex, private) \
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- (void) ({ int __ret, *__futex = &(futex); \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%2,%0\n\
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- tst %0,%0\n\
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- bf 1f\n\
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- mov.l %1,@%2\n\
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- 1: mov r1,r15"\
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- : "=&r" (__ret) : "r" (1), "r" (__futex) \
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- : "r0", "r1", "t", "memory"); \
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- if (__ret) \
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- { \
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- if (__builtin_constant_p (private) \
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- && (private) == LLL_PRIVATE) \
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- __lll_lock_wait_private (__ret, __futex); \
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- else \
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- __lll_lock_wait (__ret, __futex, (private)); \
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- } \
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- })
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+#define lll_futex_wait(futexp, val, private) \
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+ lll_futex_timed_wait(futexp, val, NULL, private)
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+
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+#define lll_futex_timed_wait(futexp, val, timespec, private) \
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+ ({ \
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+ INTERNAL_SYSCALL_DECL (__err); \
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+ long int __ret; \
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+ __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \
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+ __lll_private_flag (FUTEX_WAIT, private), \
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+ (val), (timespec)); \
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+ __ret; \
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+ })
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+
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+#define lll_futex_timed_wait_bitset(futexp, val, timespec, clockbit, private) \
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+ ({ \
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+ INTERNAL_SYSCALL_DECL (__err); \
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+ long int __ret; \
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+ int __op = FUTEX_WAIT_BITSET | clockbit; \
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+ __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
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+ __lll_private_flag (__op, private), \
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+ (val), (timespec), NULL /* Unused. */, \
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+ FUTEX_BITSET_MATCH_ANY); \
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+ __ret; \
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+ })
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+
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+#define lll_futex_wake(futexp, nr, private) \
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+ ({ \
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+ INTERNAL_SYSCALL_DECL (__err); \
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+ long int __ret; \
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+ __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \
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+ __lll_private_flag (FUTEX_WAKE, private), \
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+ (nr), 0); \
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+ __ret; \
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+ })
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+
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+#define lll_robust_dead(futexv, private) \
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+ do \
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+ { \
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+ int *__futexp = &(futexv); \
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+ atomic_or (__futexp, FUTEX_OWNER_DIED); \
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+ lll_futex_wake (__futexp, 1, private); \
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+ } \
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+ while (0)
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+
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+/* Returns non-zero if error happened, zero if success. */
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+#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \
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+ ({ \
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+ INTERNAL_SYSCALL_DECL (__err); \
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+ long int __ret; \
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+ __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
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+ __lll_private_flag (FUTEX_CMP_REQUEUE, private),\
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+ (nr_wake), (nr_move), (mutex), (val)); \
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+ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
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+ })
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+
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+
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+/* Returns non-zero if error happened, zero if success. */
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+#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \
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+ ({ \
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+ INTERNAL_SYSCALL_DECL (__err); \
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+ long int __ret; \
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+ __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
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+ __lll_private_flag (FUTEX_WAKE_OP, private), \
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+ (nr_wake), (nr_wake2), (futexp2), \
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+ FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \
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+ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
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+ })
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+
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+
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+#define lll_trylock(lock) \
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+ atomic_compare_and_exchange_val_acq(&(lock), 1, 0)
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+
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+#define lll_cond_trylock(lock) \
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+ atomic_compare_and_exchange_val_acq(&(lock), 2, 0)
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+
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+#define __lll_robust_trylock(futex, id) \
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+ (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
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+#define lll_robust_trylock(lock, id) \
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+ __lll_robust_trylock (&(lock), id)
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+
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+extern void __lll_lock_wait_private (int *futex) attribute_hidden;
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+extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
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+extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
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+
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+#define __lll_lock(futex, private) \
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+ ((void) ({ \
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+ int *__futex = (futex); \
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+ if (__builtin_expect (atomic_compare_and_exchange_val_acq (__futex, \
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+ 1, 0), 0)) \
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+ { \
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+ if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \
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+ __lll_lock_wait_private (__futex); \
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+ else \
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+ __lll_lock_wait (__futex, private); \
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+ } \
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+ }))
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+#define lll_lock(futex, private) __lll_lock (&(futex), private)
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+
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+#define __lll_robust_lock(futex, id, private) \
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+ ({ \
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+ int *__futex = (futex); \
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+ int __val = 0; \
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+ \
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+ if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \
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+ 0), 0)) \
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+ __val = __lll_robust_lock_wait (__futex, private); \
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+ __val; \
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+ })
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#define lll_robust_lock(futex, id, private) \
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- ({ int __ret, *__futex = &(futex); \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%2,%0\n\
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- tst %0,%0\n\
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- bf 1f\n\
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- mov.l %1,@%2\n\
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- 1: mov r1,r15"\
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- : "=&r" (__ret) : "r" (id), "r" (__futex) \
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- : "r0", "r1", "t", "memory"); \
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- if (__ret) \
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- __ret = __lll_robust_lock_wait (__ret, __futex, private); \
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- __ret; })
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-
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-/* Special version of lll_mutex_lock which causes the unlock function to
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- always wakeup waiters. */
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-#define lll_cond_lock(futex, private) \
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- (void) ({ int __ret, *__futex = &(futex); \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%2,%0\n\
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- tst %0,%0\n\
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- bf 1f\n\
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- mov.l %1,@%2\n\
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- 1: mov r1,r15"\
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- : "=&r" (__ret) : "r" (2), "r" (__futex) \
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- : "r0", "r1", "t", "memory"); \
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- if (__ret) \
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- __lll_lock_wait (__ret, __futex, private); })
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+ __lll_robust_lock (&(futex), id, private)
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+
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+
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+#define __lll_cond_lock(futex, private) \
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+ ((void) ({ \
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+ int *__futex = (futex); \
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+ if (__builtin_expect (atomic_exchange_acq (__futex, 2), 0)) \
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+ __lll_lock_wait (__futex, private); \
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+ }))
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+#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private)
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+
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#define lll_robust_cond_lock(futex, id, private) \
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- ({ int __ret, *__futex = &(futex); \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%2,%0\n\
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- tst %0,%0\n\
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- bf 1f\n\
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- mov.l %1,@%2\n\
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- 1: mov r1,r15"\
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- : "=&r" (__ret) : "r" (id | FUTEX_WAITERS), "r" (__futex) \
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- : "r0", "r1", "t", "memory"); \
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- if (__ret) \
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- __ret = __lll_robust_lock_wait (__ret, __futex, private); \
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- __ret; })
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-
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-#define lll_timedlock(futex, timeout, private) \
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- ({ int __ret, *__futex = &(futex); \
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- __asm__ __volatile__ ("\
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- .align 2\n\
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- mova 1f,r0\n\
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- nop\n\
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- mov r15,r1\n\
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- mov #-8,r15\n\
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- 0: mov.l @%2,%0\n\
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- tst %0,%0\n\
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- bf 1f\n\
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- mov.l %1,@%2\n\
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- 1: mov r1,r15"\
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- : "=&r" (__ret) : "r" (1), "r" (__futex) \
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|
- : "r0", "r1", "t", "memory"); \
|
|
|
- if (__ret) \
|
|
|
- __ret = __lll_timedlock_wait (__ret, __futex, timeout, private); \
|
|
|
- __ret; })
|
|
|
-
|
|
|
-#define lll_robust_timedlock(futex, timeout, id, private) \
|
|
|
- ({ int __ret, *__futex = &(futex); \
|
|
|
- __asm__ __volatile__ ("\
|
|
|
- .align 2\n\
|
|
|
- mova 1f,r0\n\
|
|
|
- nop\n\
|
|
|
- mov r15,r1\n\
|
|
|
- mov #-8,r15\n\
|
|
|
- 0: mov.l @%2,%0\n\
|
|
|
- tst %0,%0\n\
|
|
|
- bf 1f\n\
|
|
|
- mov.l %1,@%2\n\
|
|
|
- 1: mov r1,r15"\
|
|
|
- : "=&r" (__ret) : "r" (id), "r" (__futex) \
|
|
|
- : "r0", "r1", "t", "memory"); \
|
|
|
- if (__ret) \
|
|
|
- __ret = __lll_robust_timedlock_wait (__ret, __futex, \
|
|
|
- timeout, private); \
|
|
|
- __ret; })
|
|
|
-
|
|
|
-#define lll_unlock(futex, private) \
|
|
|
- (void) ({ int __ret, *__futex = &(futex); \
|
|
|
- __asm__ __volatile__ ("\
|
|
|
- .align 2\n\
|
|
|
- mova 1f,r0\n\
|
|
|
- mov r15,r1\n\
|
|
|
- mov #-6,r15\n\
|
|
|
- 0: mov.l @%1,%0\n\
|
|
|
- add #-1,%0\n\
|
|
|
- mov.l %0,@%1\n\
|
|
|
- 1: mov r1,r15"\
|
|
|
- : "=&r" (__ret) : "r" (__futex) \
|
|
|
- : "r0", "r1", "memory"); \
|
|
|
- if (__ret) \
|
|
|
- { \
|
|
|
- if (__builtin_constant_p (private) \
|
|
|
- && (private) == LLL_PRIVATE) \
|
|
|
- __lll_unlock_wake_private (__futex); \
|
|
|
- else \
|
|
|
- __lll_unlock_wake (__futex, (private)); \
|
|
|
- } \
|
|
|
- })
|
|
|
+ __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private)
|
|
|
|
|
|
-#define lll_robust_unlock(futex, private) \
|
|
|
- (void) ({ int __ret, *__futex = &(futex); \
|
|
|
- __asm__ __volatile__ ("\
|
|
|
- .align 2\n\
|
|
|
- mova 1f,r0\n\
|
|
|
- mov r15,r1\n\
|
|
|
- mov #-6,r15\n\
|
|
|
- 0: mov.l @%1,%0\n\
|
|
|
- and %2,%0\n\
|
|
|
- mov.l %0,@%1\n\
|
|
|
- 1: mov r1,r15"\
|
|
|
- : "=&r" (__ret) : "r" (__futex), "r" (FUTEX_WAITERS) \
|
|
|
- : "r0", "r1", "memory"); \
|
|
|
- if (__ret) \
|
|
|
- __lll_unlock_wake (__futex, private); })
|
|
|
-
|
|
|
-#define lll_robust_dead(futex, private) \
|
|
|
- (void) ({ int __ignore, *__futex = &(futex); \
|
|
|
- __asm__ __volatile__ ("\
|
|
|
- .align 2\n\
|
|
|
- mova 1f,r0\n\
|
|
|
- mov r15,r1\n\
|
|
|
- mov #-6,r15\n\
|
|
|
- 0: mov.l @%1,%0\n\
|
|
|
- or %2,%0\n\
|
|
|
- mov.l %0,@%1\n\
|
|
|
- 1: mov r1,r15"\
|
|
|
- : "=&r" (__ignore) : "r" (__futex), "r" (FUTEX_OWNER_DIED) \
|
|
|
- : "r0", "r1", "memory"); \
|
|
|
- lll_futex_wake (__futex, 1, private); })
|
|
|
-
|
|
|
-# ifdef NEED_SYSCALL_INST_PAD
|
|
|
-# define SYSCALL_WITH_INST_PAD "\
|
|
|
- trapa #0x14; or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0"
|
|
|
-# else
|
|
|
-# define SYSCALL_WITH_INST_PAD "\
|
|
|
- trapa #0x14"
|
|
|
-# endif
|
|
|
|
|
|
-#define lll_futex_wait(futex, val, private) \
|
|
|
- lll_futex_timed_wait (futex, val, NULL, private)
|
|
|
+extern int __lll_timedlock_wait (int *futex, const struct timespec *,
|
|
|
+ int private) attribute_hidden;
|
|
|
+extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *,
|
|
|
+ int private) attribute_hidden;
|
|
|
+
|
|
|
+#define __lll_timedlock(futex, abstime, private) \
|
|
|
+ ({ \
|
|
|
+ int *__futex = (futex); \
|
|
|
+ int __val = 0; \
|
|
|
+ \
|
|
|
+ if (__builtin_expect (atomic_exchange_acq (__futex, 1), 0)) \
|
|
|
+ __val = __lll_timedlock_wait (__futex, abstime, private); \
|
|
|
+ __val; \
|
|
|
+ })
|
|
|
+#define lll_timedlock(futex, abstime, private) \
|
|
|
+ __lll_timedlock (&(futex), abstime, private)
|
|
|
|
|
|
|
|
|
-#define lll_futex_timed_wait(futex, val, timeout, private) \
|
|
|
+#define __lll_robust_timedlock(futex, abstime, id, private) \
|
|
|
({ \
|
|
|
- int __status; \
|
|
|
- register unsigned long __r3 __asm__ ("r3") = SYS_futex; \
|
|
|
- register unsigned long __r4 __asm__ ("r4") = (unsigned long) (futex); \
|
|
|
- register unsigned long __r5 __asm__ ("r5") \
|
|
|
- = __lll_private_flag (FUTEX_WAIT, private); \
|
|
|
- register unsigned long __r6 __asm__ ("r6") = (unsigned long) (val); \
|
|
|
- register unsigned long __r7 __asm__ ("r7") = (unsigned long) (timeout); \
|
|
|
- __asm__ __volatile__ (SYSCALL_WITH_INST_PAD \
|
|
|
- : "=z" (__status) \
|
|
|
- : "r" (__r3), "r" (__r4), "r" (__r5), \
|
|
|
- "r" (__r6), "r" (__r7) \
|
|
|
- : "memory", "t"); \
|
|
|
- __status; \
|
|
|
+ int *__futex = (futex); \
|
|
|
+ int __val = 0; \
|
|
|
+ \
|
|
|
+ if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \
|
|
|
+ 0), 0)) \
|
|
|
+ __val = __lll_robust_timedlock_wait (__futex, abstime, private); \
|
|
|
+ __val; \
|
|
|
})
|
|
|
+#define lll_robust_timedlock(futex, abstime, id, private) \
|
|
|
+ __lll_robust_timedlock (&(futex), abstime, id, private)
|
|
|
|
|
|
|
|
|
-#define lll_futex_wake(futex, nr, private) \
|
|
|
- do { \
|
|
|
- int __ignore; \
|
|
|
- register unsigned long __r3 __asm__ ("r3") = SYS_futex; \
|
|
|
- register unsigned long __r4 __asm__ ("r4") = (unsigned long) (futex); \
|
|
|
- register unsigned long __r5 __asm__ ("r5") \
|
|
|
- = __lll_private_flag (FUTEX_WAKE, private); \
|
|
|
- register unsigned long __r6 __asm__ ("r6") = (unsigned long) (nr); \
|
|
|
- register unsigned long __r7 __asm__ ("r7") = 0; \
|
|
|
- __asm__ __volatile__ (SYSCALL_WITH_INST_PAD \
|
|
|
- : "=z" (__ignore) \
|
|
|
- : "r" (__r3), "r" (__r4), "r" (__r5), \
|
|
|
- "r" (__r6), "r" (__r7) \
|
|
|
- : "memory", "t"); \
|
|
|
- } while (0)
|
|
|
+#define __lll_unlock(futex, private) \
|
|
|
+ (void) \
|
|
|
+ ({ int *__futex = (futex); \
|
|
|
+ int __oldval = atomic_exchange_rel (__futex, 0); \
|
|
|
+ if (__builtin_expect (__oldval > 1, 0)) \
|
|
|
+ lll_futex_wake (__futex, 1, private); \
|
|
|
+ })
|
|
|
+#define lll_unlock(futex, private) __lll_unlock(&(futex), private)
|
|
|
+
|
|
|
+
|
|
|
+#define __lll_robust_unlock(futex, private) \
|
|
|
+ (void) \
|
|
|
+ ({ int *__futex = (futex); \
|
|
|
+ int __oldval = atomic_exchange_rel (__futex, 0); \
|
|
|
+ if (__builtin_expect (__oldval & FUTEX_WAITERS, 0)) \
|
|
|
+ lll_futex_wake (__futex, 1, private); \
|
|
|
+ })
|
|
|
+#define lll_robust_unlock(futex, private) \
|
|
|
+ __lll_robust_unlock(&(futex), private)
|
|
|
|
|
|
|
|
|
#define lll_islocked(futex) \
|
|
|
- (futex != LLL_LOCK_INITIALIZER)
|
|
|
+ (futex != 0)
|
|
|
+
|
|
|
+
|
|
|
+/* Our internal lock implementation is identical to the binary-compatible
|
|
|
+ mutex implementation. */
|
|
|
+
|
|
|
+/* Initializers for lock. */
|
|
|
+#define LLL_LOCK_INITIALIZER (0)
|
|
|
+#define LLL_LOCK_INITIALIZER_LOCKED (1)
|
|
|
+
|
|
|
+/* The states of a lock are:
|
|
|
+ 0 - untaken
|
|
|
+ 1 - taken by one user
|
|
|
+ >1 - taken by more users */
|
|
|
|
|
|
-/* The kernel notifies a process with uses CLONE_CLEARTID via futex
|
|
|
+/* The kernel notifies a process which uses CLONE_CHILD_CLEARTID via futex
|
|
|
wakeup when the clone terminates. The memory location contains the
|
|
|
thread ID while the clone is running and is reset to zero
|
|
|
- afterwards. */
|
|
|
-
|
|
|
+ afterwards. */
|
|
|
#define lll_wait_tid(tid) \
|
|
|
- do { \
|
|
|
- __typeof (tid) __tid; \
|
|
|
- while ((__tid = (tid)) != 0) \
|
|
|
- lll_futex_wait (&(tid), __tid, LLL_SHARED); \
|
|
|
+ do { \
|
|
|
+ __typeof (tid) __tid; \
|
|
|
+ while ((__tid = (tid)) != 0) \
|
|
|
+ lll_futex_wait (&(tid), __tid, LLL_SHARED);\
|
|
|
} while (0)
|
|
|
|
|
|
-extern int __lll_timedwait_tid (int *tid, const struct timespec *abstime)
|
|
|
+extern int __lll_timedwait_tid (int *, const struct timespec *)
|
|
|
attribute_hidden;
|
|
|
-#define lll_timedwait_tid(tid, abstime) \
|
|
|
- ({ \
|
|
|
- int __ret = 0; \
|
|
|
- if (tid != 0) \
|
|
|
- { \
|
|
|
- if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) \
|
|
|
- __ret = EINVAL; \
|
|
|
- else \
|
|
|
- __ret = __lll_timedwait_tid (&tid, abstime); \
|
|
|
- } \
|
|
|
- __ret; })
|
|
|
|
|
|
-#endif /* !__ASSEMBLER__ */
|
|
|
+#define lll_timedwait_tid(tid, abstime) \
|
|
|
+ ({ \
|
|
|
+ int __res = 0; \
|
|
|
+ if ((tid) != 0) \
|
|
|
+ __res = __lll_timedwait_tid (&(tid), (abstime)); \
|
|
|
+ __res; \
|
|
|
+ })
|
|
|
|
|
|
-#endif /* lowlevellock.h */
|
|
|
+#endif /* lowlevellock.h */
|