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Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h158
1 files changed, 57 insertions, 101 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
index 4758b63bd0..ad4d27300f 100644
--- a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h
@@ -68,9 +68,6 @@
 # endif	      
 #endif
 
-/* Initializer for compatibility lock.	*/
-#define LLL_MUTEX_LOCK_INITIALIZER (0)
-
 #define lll_futex_wait(futex, val, private) \
   lll_futex_timed_wait (futex, val, NULL, private)
 
@@ -108,13 +105,13 @@
   })
 
 
-#define lll_robust_mutex_dead(futexv) \
+#define lll_robust_dead(futexv, private) \
   do									      \
     {									      \
       int *__futexp = &(futexv);					      \
 									      \
       atomic_or (__futexp, FUTEX_OWNER_DIED);				      \
-      lll_futex_wake (__futexp, 1, LLL_SHARED);				      \
+      lll_futex_wake (__futexp, 1, private);				      \
     }									      \
   while (0)
 
@@ -175,7 +172,7 @@
 
 static inline int
 __attribute__ ((always_inline))
-__lll_mutex_trylock (int *futex)
+__lll_trylock (int *futex)
 {
     unsigned int old;
 
@@ -184,12 +181,12 @@ __lll_mutex_trylock (int *futex)
 		       : "0" (0), "d" (1), "m" (*futex) : "cc", "memory" );
     return old != 0;
 }
-#define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
+#define lll_trylock(futex) __lll_trylock (&(futex))
 
 
 static inline int
 __attribute__ ((always_inline))
-__lll_mutex_cond_trylock (int *futex)
+__lll_cond_trylock (int *futex)
 {
     unsigned int old;
 
@@ -198,12 +195,12 @@ __lll_mutex_cond_trylock (int *futex)
 		       : "0" (0), "d" (2), "m" (*futex) : "cc", "memory" );
     return old != 0;
 }
-#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex))
+#define lll_cond_trylock(futex) __lll_cond_trylock (&(futex))
 
 
 static inline int
 __attribute__ ((always_inline))
-__lll_robust_mutex_trylock (int *futex, int id)
+__lll_robust_trylock (int *futex, int id)
 {
     unsigned int old;
 
@@ -212,141 +209,121 @@ __lll_robust_mutex_trylock (int *futex, int id)
 		       : "0" (0), "d" (id), "m" (*futex) : "cc", "memory" );
     return old != 0;
 }
-#define lll_robust_mutex_trylock(futex, id) \
-  __lll_robust_mutex_trylock (&(futex), id)
+#define lll_robust_trylock(futex, id) \
+  __lll_robust_trylock (&(futex), id)
 
 
-extern void __lll_lock_wait (int *futex) attribute_hidden;
-extern int __lll_robust_lock_wait (int *futex) attribute_hidden;
+extern void __lll_lock_wait_private (int *futex) attribute_hidden;
+extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
+extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
 
 static inline void
 __attribute__ ((always_inline))
-__lll_mutex_lock (int *futex)
+__lll_lock (int *futex, int private)
 {
-  if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0)
-    __lll_lock_wait (futex);
+  if (__builtin_expect (atomic_compare_and_exchange_bool_acq (futex, 1, 0), 0))
+    {
+      if (__builtin_constant_p (private) && private == LLL_PRIVATE)
+	__lll_lock_wait_private (futex);
+      else
+	__lll_lock_wait (futex, private);
+    }
 }
-#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
+#define lll_lock(futex, private) __lll_lock (&(futex), private)
 
 static inline int
 __attribute__ ((always_inline))
-__lll_robust_mutex_lock (int *futex, int id)
+__lll_robust_lock (int *futex, int id, int private)
 {
   int result = 0;
-  if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0)
-    result = __lll_robust_lock_wait (futex);
+  if (__builtin_expect (atomic_compare_and_exchange_bool_acq (futex, id, 0),
+			0))
+    result = __lll_robust_lock_wait (futex, private);
   return result;
 }
-#define lll_robust_mutex_lock(futex, id) __lll_robust_mutex_lock (&(futex), id)
+#define lll_robust_lock(futex, id, private) \
+  __lll_robust_lock (&(futex), id, private)
 
 static inline void
 __attribute__ ((always_inline))
-__lll_mutex_cond_lock (int *futex)
+__lll_cond_lock (int *futex, int private)
 {
-  if (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0)
-    __lll_lock_wait (futex);
+  if (__builtin_expect (atomic_compare_and_exchange_bool_acq (futex, 2, 0), 0))
+    __lll_lock_wait (futex, private);
 }
-#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex))
+#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private)
 
-#define lll_robust_mutex_cond_lock(futex, id) \
-  __lll_robust_mutex_lock (&(futex), (id) | FUTEX_WAITERS)
+#define lll_robust_cond_lock(futex, id, private) \
+  __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private)
 
 extern int __lll_timedlock_wait
-  (int *futex, const struct timespec *) attribute_hidden;
+  (int *futex, const struct timespec *, int private) attribute_hidden;
 extern int __lll_robust_timedlock_wait
-  (int *futex, const struct timespec *) attribute_hidden;
+  (int *futex, const struct timespec *, int private) attribute_hidden;
 
 static inline int
 __attribute__ ((always_inline))
-__lll_mutex_timedlock (int *futex, const struct timespec *abstime)
+__lll_timedlock (int *futex, const struct timespec *abstime, int private)
 {
   int result = 0;
-  if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0)
-    result = __lll_timedlock_wait (futex, abstime);
+  if (__builtin_expect (atomic_compare_and_exchange_bool_acq (futex, 1, 0), 0))
+    result = __lll_timedlock_wait (futex, abstime, private);
   return result;
 }
-#define lll_mutex_timedlock(futex, abstime) \
-  __lll_mutex_timedlock (&(futex), abstime)
+#define lll_timedlock(futex, abstime, private) \
+  __lll_timedlock (&(futex), abstime, private)
 
 static inline int
 __attribute__ ((always_inline))
-__lll_robust_mutex_timedlock (int *futex, const struct timespec *abstime,
-			      int id)
+__lll_robust_timedlock (int *futex, const struct timespec *abstime,
+			int id, int private)
 {
   int result = 0;
-  if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0)
-    result = __lll_robust_timedlock_wait (futex, abstime);
+  if (__builtin_expect (atomic_compare_and_exchange_bool_acq (futex, id, 0),
+			0))
+    result = __lll_robust_timedlock_wait (futex, abstime, private);
   return result;
 }
-#define lll_robust_mutex_timedlock(futex, abstime, id) \
-  __lll_robust_mutex_timedlock (&(futex), abstime, id)
+#define lll_robust_timedlock(futex, abstime, id, private) \
+  __lll_robust_timedlock (&(futex), abstime, id, private)
 
 
 static inline void
 __attribute__ ((always_inline))
-__lll_mutex_unlock (int *futex)
+__lll_unlock (int *futex, int private)
 {
   int oldval;
   int newval = 0;
 
   lll_compare_and_swap (futex, oldval, newval, "slr %2,%2");
-  if (oldval > 1)
-    lll_futex_wake (futex, 1, LLL_SHARED);
+  if (__builtin_expect (oldval > 1, 0))
+    lll_futex_wake (futex, 1, private);
 }
-#define lll_mutex_unlock(futex) \
-  __lll_mutex_unlock(&(futex))
+#define lll_unlock(futex, private) __lll_unlock(&(futex), private)
 
 
 static inline void
 __attribute__ ((always_inline))
-__lll_robust_mutex_unlock (int *futex, int mask)
+__lll_robust_unlock (int *futex, int private)
 {
   int oldval;
   int newval = 0;
 
   lll_compare_and_swap (futex, oldval, newval, "slr %2,%2");
-  if (oldval & mask)
-    lll_futex_wake (futex, 1, LLL_SHARED);
-}
-#define lll_robust_mutex_unlock(futex) \
-  __lll_robust_mutex_unlock(&(futex), FUTEX_WAITERS)
-
-
-static inline void
-__attribute__ ((always_inline))
-__lll_mutex_unlock_force (int *futex)
-{
-  *futex = 0;
-  lll_futex_wake (futex, 1, LLL_SHARED);
+  if (__builtin_expect (oldval & FUTEX_WAITERS, 0))
+    lll_futex_wake (futex, 1, private);
 }
-#define lll_mutex_unlock_force(futex) \
-  __lll_mutex_unlock_force(&(futex))
+#define lll_robust_unlock(futex, private) \
+  __lll_robust_unlock(&(futex), private)
 
-#define lll_mutex_islocked(futex) \
+#define lll_islocked(futex) \
   (futex != 0)
 
 
-/* We have a separate internal lock implementation which is not tied
-   to binary compatibility.  We can use the lll_mutex_*.  */
-
-/* Type for lock object.  */
-typedef int lll_lock_t;
-
 /* Initializers for lock.  */
 #define LLL_LOCK_INITIALIZER		(0)
 #define LLL_LOCK_INITIALIZER_LOCKED	(1)
 
-#define lll_trylock(futex)      lll_mutex_trylock (futex)
-#define lll_lock(futex)         lll_mutex_lock (futex)
-#define lll_unlock(futex)       lll_mutex_unlock (futex)
-#define lll_islocked(futex)     lll_mutex_islocked (futex)
-
-/* The states of a lock are:
-    1  -  untaken
-    0  -  taken by one user
-   <0  -  taken by more users */
-
-
 /* The kernel notifies a process with uses CLONE_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
@@ -373,25 +350,4 @@ extern int __lll_timedwait_tid (int *, const struct timespec *)
     __res;								      \
   })
 
-/* Conditional variable handling.  */
-
-extern void __lll_cond_wait (pthread_cond_t *cond)
-     attribute_hidden;
-extern int __lll_cond_timedwait (pthread_cond_t *cond,
-				 const struct timespec *abstime)
-     attribute_hidden;
-extern void __lll_cond_wake (pthread_cond_t *cond)
-     attribute_hidden;
-extern void __lll_cond_broadcast (pthread_cond_t *cond)
-     attribute_hidden;
-
-#define lll_cond_wait(cond) \
-  __lll_cond_wait (cond)
-#define lll_cond_timedwait(cond, abstime) \
-  __lll_cond_timedwait (cond, abstime)
-#define lll_cond_wake(cond) \
-  __lll_cond_wake (cond)
-#define lll_cond_broadcast(cond) \
-  __lll_cond_broadcast (cond)
-
 #endif	/* lowlevellock.h */
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-06-12 13:34:22 +0000