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(FUTEX_WAKE_OP, FUTEX_OP_CLEAR_WAKE_IF_GT_ONE): Define. 

(lll_futex_wake_unlock): Define.
This commit is contained in:
Ulrich Drepper 2005-09-08 17:39:04 +00:00
parent e582e2ddcf
commit eb4e0abb40
1 changed files with 16 additions and 0 deletions
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16
sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
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@ -31,6 +31,8 @@
#define FUTEX_WAKE 1 #define FUTEX_WAKE 1
#define FUTEX_REQUEUE 3 #define FUTEX_REQUEUE 3
#define FUTEX_CMP_REQUEUE 4 #define FUTEX_CMP_REQUEUE 4
#define FUTEX_WAKE_OP 5
#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1)
/* Initializer for compatibility lock. */ /* Initializer for compatibility lock. */
#define LLL_MUTEX_LOCK_INITIALIZER (0) #define LLL_MUTEX_LOCK_INITIALIZER (0)
@ -73,6 +75,20 @@
INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
}) })
/* Returns non-zero if error happened, zero if success. */
#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2) \
({ \
INTERNAL_SYSCALL_DECL (__err); \
long int __ret; \
__ret = INTERNAL_SYSCALL (futex, __err, 6, \
(futexp), FUTEX_WAKE_OP, (nr_wake), \
(nr_wake2), (futexp2), \
FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \
INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
})
static inline int __attribute__((always_inline)) static inline int __attribute__((always_inline))
__lll_mutex_trylock(int *futex) __lll_mutex_trylock(int *futex)