(FUTEX_CMP_REQUEUE): Define.

(lll_futex_requeue): Add val argument, use FUTEX_CMP_REQUEUE
internally.  Return non-zero if error, zero if success.

diff --git a/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h b/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
index a7079a8..fd4a7ca 100644 (file)
--- a/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
@@ -30,6 +30,7 @@
 #define FUTEX_WAIT             0
 #define FUTEX_WAKE             1
 #define FUTEX_REQUEUE          3
+#define FUTEX_CMP_REQUEUE      4
 
 /* Initializer for compatibility lock. */
 #define LLL_MUTEX_LOCK_INITIALIZER (0)
@@ -61,14 +62,15 @@
     INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret : __ret;                 \
   })
 
-#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex) \
+/* Returns non-zero if error happened, zero if success.  */
+#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val) \
   ({                                                                         \
     INTERNAL_SYSCALL_DECL (__err);                                           \
     long int __ret;                                                          \
-    __ret = INTERNAL_SYSCALL (futex, __err, 5,                               \
-                             (futexp), FUTEX_REQUEUE, (nr_wake), (nr_move),  \
-                             (mutex));                                       \
-    INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret : __ret;                 \
+    __ret = INTERNAL_SYSCALL (futex, __err, 6,                               \
+                             (futexp), FUTEX_CMP_REQUEUE, (nr_wake),         \
+                             (nr_move), (mutex), (val));                     \
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err);                                 \
   })