(FUTEX_WAKE_OP, FUTEX_OP_CLEAR_WAKE_IF_GT_ONE): Define.

(lll_futex_wake_unlock): Define.

diff --git a/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h b/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
index fd4a7ca..ab325d2 100644 (file)
--- a/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
@@ -31,6 +31,8 @@
 #define FUTEX_WAKE             1
 #define FUTEX_REQUEUE          3
 #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. */
 #define LLL_MUTEX_LOCK_INITIALIZER (0)
@@ -73,6 +75,20 @@
     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))
 __lll_mutex_trylock(int *futex)