Update.

* sysdeps/unix/sysv/linux/ia64/pthread_once.c: Use __builtin_expect.
	Use __lll_add instead of spelling it out.  Use protected symbol names.
	* sysdeps/unix/sysv/linux/ia64/sem_post.c: Use __builtin_expect.
	Use __lll_add.
	* sysdeps/unix/sysv/linux/ia64/lowlevellock.h (__lll_compare_and_swap):
	Renamed from lll_compare_and_swap.  Use new name where necessary.
	(__lll_add): Defined.
	(__lll_dec_if_positive): Defined.
	(__lll_test_and_set): Defined.
	* sysdeps/ia64/pthread_spin_init.c: Removed.
	* sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c: Removed.
	* sysdeps/unix/sysv/linux/ia64/sem_trywait.c: Removed.
	* sysdeps/unix/sysv/linux/ia64/sem_wait.c: Removed.
	* sysdeps/unix/sysv/linux/ia64/lowlevellock.c: Removed.
	* sysdeps/unix/sysv/linux/ia64/libc-lowlevellock.c: Removed.
	* sysdeps/unix/sysv/linux/ia64/libc-lowlevelmutex.c: Removed.
	* sysdeps/unix/sysv/linux/ia64/sem_timedwait.c: Removed.

nptl/Banner

@@ -1 +1 @@
-NPTL 0.29 by Ulrich Drepper
+NPTL 0.30 by Ulrich Drepper

nptl/ChangeLog

@@ -5,6 +5,23 @@
 
 2003-03-17  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/unix/sysv/linux/ia64/pthread_once.c: Use __builtin_expect.
+	Use __lll_add instead of spelling it out.  Use protected symbol names.
+	* sysdeps/unix/sysv/linux/ia64/sem_post.c: Use __builtin_expect.
+	Use __lll_add.
+	* sysdeps/unix/sysv/linux/ia64/lowlevellock.h (__lll_compare_and_swap):
+	Renamed from lll_compare_and_swap.  Use new name where necessary.
+	(__lll_add): Defined.
+	(__lll_dec_if_positive): Defined.
+	(__lll_test_and_set): Defined.
+	* sysdeps/ia64/pthread_spin_init.c: Removed.
+	* sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c: Removed.
+	* sysdeps/unix/sysv/linux/ia64/sem_trywait.c: Removed.
+	* sysdeps/unix/sysv/linux/ia64/sem_wait.c: Removed.
+	* sysdeps/unix/sysv/linux/ia64/lowlevellock.c: Removed.
+	* sysdeps/unix/sysv/linux/ia64/libc-lowlevellock.c: Removed.
+	* sysdeps/unix/sysv/linux/ia64/libc-lowlevelmutex.c: Removed.
+	* sysdeps/unix/sysv/linux/ia64/sem_timedwait.c: Removed.
 	* sysdeps/ia64/bits/atomic.h: Add __builtin_expect where appropriate.
 	* sysdeps/ia64/pthread_spin_unlock.c (pthread_spin_unlock): Use
 	__sync_lock_release_si.

nptl/sysdeps/ia64/pthread_spin_init.c

@@ -1,20 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-/* Not needed.  pthread_spin_init is an alias for pthread_spin_unlock.  */

nptl/sysdeps/ia64/pthread_spin_unlock.c

@@ -26,4 +26,3 @@ pthread_spin_unlock (pthread_spinlock_t *lock)
   __sync_lock_release_si ((int *) lock);
   return 0;
 }
-strong_alias (pthread_spin_unlock, pthread_spin_init)

nptl/sysdeps/unix/sysv/linux/ia64/libc-lowlevellock.c

@@ -1,19 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-/* Not needed.  lll_mutex_* implementation is the same as lll_*.  */

nptl/sysdeps/unix/sysv/linux/ia64/libc-lowlevelmutex.c

@@ -1,21 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-/* No difference to lowlevelmutex.c  */
-#include "lowlevelmutex.c"

nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.c

@@ -1,85 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <errno.h>
-#include <sysdep.h>
-#include <lowlevellock.h>
-#include <sys/time.h>
-
-
-int
-lll_unlock_wake_cb (futex)
-     int *futex;
-{
-  int oldval;
-  int val = *futex;
-
-  do
-    oldval = val;
-  while ((val = lll_compare_and_swap (futex, oldval, 0)) != oldval);
-  if (oldval > 1)
-    lll_futex_wake (futex, 1);
-  return 0;
-}
-hidden_proto (lll_unlock_wake_cb)
-
-
-int
-___lll_timedwait_tid (ptid, abstime)
-     int *ptid;
-     const struct timespec *abstime;
-{
-  int tid;
-
-  if (abstime == NULL || abstime->tv_nsec >= 1000000000)
-    return EINVAL;
-
-  /* Repeat until thread terminated.  */
-  while ((tid = *ptid) != 0)
-    {
-      /* Get current time.  */
-      struct timeval tv;
-      __gettimeofday (&tv, NULL);
-
-      /* Determine relative timeout.  */
-      struct timespec rt;
-      rt.tv_sec = abstime->tv_sec - tv.tv_sec;
-      rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
-      if (rt.tv_nsec < 0)
-	{
-	  rt.tv_nsec += 1000000000;
-	  rt.tv_sec--;
-	}
-      /* Already timed out?  */
-      if (rt.tv_sec < 0)
-	return ETIMEDOUT;
-
-      /* Wait until thread terminates.  */
-      int err = lll_futex_timed_wait (ptid, tid, &rt);
-
-      /* Woken due to timeout?  */
-      if (err == -ETIMEDOUT)
-	/* Yes.  */
-	return ETIMEDOUT;
-    }
-
-  return 0;
-}
-
-hidden_proto (___lll_timedwait_tid)

nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h

@@ -86,38 +86,73 @@
      __r10 == -1 ? -__r8 : __r8;					      \
   })
 
-#define lll_compare_and_swap(futex, oldval, newval) \
+#define __lll_compare_and_swap(futex, oldval, newval) \
   __sync_val_compare_and_swap_si ((futex), (oldval), (newval))
 
+/* Add inc to *futex atomically and return the old value.  */
+#define __lll_add(futex, inc) \
+  ({									      \
+    int __val, __oldval;						      \
+    int *__futex = (futex);						      \
+    int __inc = inc;							      \
+									      \
+    __val = *__futex;							      \
+    do									      \
+      {									      \
+        __oldval = __val;						      \
+	__val = __lll_compare_and_swap (__futex, __oldval, __oldval + __inc); \
+      }									      \
+    while (__builtin_expect (__val != __oldval, 0));			      \
+    __val;								      \
+  })
+
+/* Decrement *futex if it is > 0, and return the old value.  */
+#define __lll_dec_if_positive(futex)					      \
+  ({									      \
+    int __val, __oldval;						      \
+    int *__futex = (futex);						      \
+									      \
+    __val = *__futex;							      \
+    do									      \
+      {									      \
+	if (__builtin_expect (__val <= 0, 0))				      \
+	  break;							      \
+	__oldval = __val;						      \
+	__val = __lll_compare_and_swap (__futex, __oldval, __oldval - 1);     \
+      }									      \
+    while (__builtin_expect (__val != __oldval, 0));			      \
+    __val;								      \
+  })    
+
+/* Atomically store newval and return the old value.  */
+#define __lll_test_and_set(futex, newval) \
+  __sync_lock_test_and_set_si ((futex), (newval)) 
+
 static inline int
 __attribute__ ((always_inline))
 __lll_mutex_trylock (int *futex)
 {
-  return lll_compare_and_swap (futex, 0, 1) != 0;
+  return __lll_compare_and_swap (futex, 0, 1) != 0;
 }
 #define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
 
 
-extern void ___lll_mutex_lock (int *, int) attribute_hidden;
+extern void __lll_lock_wait (int *futex, int val) attribute_hidden;
 
 
 static inline void
 __attribute__ ((always_inline))
 __lll_mutex_lock (int *futex)
 {
-  int oldval;
+  int val = __lll_add (futex, 1);
-  int val = *futex;
 
-  do
+  if (__builtin_expect (val != 0, 0))
-    oldval = val;
+    __lll_lock_wait (futex, val);
-  while ((val = lll_compare_and_swap (futex, oldval, oldval + 1)) != oldval);
-  if (oldval > 0)
-    ___lll_mutex_lock (futex, oldval + 1);
 }
 #define lll_mutex_lock(futex) __lll_mutex_lock (&(futex))
 
 
-extern int ___lll_mutex_timedlock (int *, const struct timespec *, int)
+extern int __lll_timedlock_wait (int *futex, int val, const struct timespec *)
      attribute_hidden;
 
 
@@ -125,15 +160,11 @@ static inline int
 __attribute__ ((always_inline))
 __lll_mutex_timedlock (int *futex, const struct timespec *abstime)
 {
-  int oldval;
+  int val = __lll_add (futex, 1);
-  int val = *futex;
   int result = 0;
 
-  do
+  if (__builtin_expect (val != 0, 0))
-    oldval = val;
+    result = __lll_timedlock_wait (futex, val, abstime);
-  while ((val = lll_compare_and_swap (futex, oldval, oldval + 1)) != oldval);
-  if (oldval > 0)
-    result = ___lll_mutex_timedlock (futex, abstime, oldval + 1);
 
   return result;
 }
@@ -145,13 +176,9 @@ static inline void
 __attribute__ ((always_inline))
 __lll_mutex_unlock (int *futex)
 {
-  int oldval;
+  int val = __lll_test_and_set (futex, 0);
-  int val = *futex;
 
-  do
+  if (__builtin_expect (val > 1, 0))
-    oldval = val;
-  while ((val = lll_compare_and_swap (futex, oldval, 0)) != oldval);
-  if (oldval > 1)
     lll_futex_wake (futex, 1);
 }
 #define lll_mutex_unlock(futex) __lll_mutex_unlock(&(futex))
@@ -182,30 +209,25 @@ extern int lll_unlock_wake_cb (int *__futex) attribute_hidden;
    wakeup when the clone terminates.  The memory location contains the
    thread ID while the clone is running and is reset to zero
    afterwards.	*/
-static inline void
+#define lll_wait_tid(tid) \
-__attribute__ ((always_inline))
+  do						\
-__lll_wait_tid (int *ptid)
+    {						\
-{
+      __typeof (tid) __tid;			\
-  int tid;
+      while ((__tid = (tid)) != 0)		\
+	lll_futex_wait (&(tid), __tid);		\
+    }						\
+  while (0)
 
-  while ((tid = *ptid) != 0)
+extern int __lll_timedwait_tid (int *, const struct timespec *)
-    lll_futex_wait (ptid, tid);
-}
-#define lll_wait_tid(tid) __lll_wait_tid(&(tid))
-
-
-extern int ___lll_timedwait_tid (int *, const struct timespec *)
      attribute_hidden;
-static inline int
-__attribute__ ((always_inline))
-__lll_timedwait_tid (int *ptid, const struct timespec *abstime)
-{
-  if (*ptid == 0)
-    return 0;
 
-  return ___lll_timedwait_tid (ptid, abstime);
+#define lll_timedwait_tid(tid, abstime) \
-}
+  ({							\
-#define lll_timedwait_tid(tid, abstime) __lll_timedwait_tid (&(tid), abstime)
+    int __res = 0;					\
+    if ((tid) != 0)					\
+      __res = __lll_timedwait_tid (&(tid), (abstime));	\
+    __res;						\
+  })
 
 
 /* Conditional variable handling.  */

nptl/sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c

@@ -1,100 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <errno.h>
-#include <sysdep.h>
-#include <lowlevellock.h>
-#include <sys/time.h>
-
-
-void
-___lll_mutex_lock (futex, newval)
-     int *futex;
-     int newval;
-{
-  int oldval, val;
-
-  do
-    {
-      lll_futex_wait (futex, newval);
-      val = *futex;
-      do
-        oldval = val;
-      while ((val = lll_compare_and_swap (futex, oldval, oldval + 1))
-	     != oldval);
-      newval = val + 1;
-    }
-  while (val != 0);
-
-  *futex = 2;
-}
-hidden_proto (___lll_mutex_lock)
-
-
-int
-___lll_mutex_timedlock (futex, abstime, newval)
-     int *futex;
-     const struct timespec *abstime;
-     int newval;
-{
-  /* Reject invalid timeouts.  */
-  if (abstime->tv_nsec >= 1000000000)
-    return EINVAL;
-
-  int oldval, val;
-  do
-    {
-      /* Get the current time.  */
-      struct timeval tv;
-      __gettimeofday (&tv, NULL);
-
-      /* Compute relative timeout.  */
-      struct timespec rt;
-      rt.tv_sec = abstime->tv_sec - tv.tv_sec;
-      rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
-      if (rt.tv_nsec < 0)
-	{
-	  rt.tv_nsec += 1000000000;
-	  --rt.tv_sec;
-	}
-      /* Already timed out?  */
-      if (rt.tv_sec < 0)
-	return ETIMEDOUT;
-
-      /* Wait.  */
-      int err = lll_futex_timed_wait (futex, newval, &rt);
-
-      /* If timed out return with an appropriate error.  */
-      if (err == -ETIMEDOUT)
-	return ETIMEDOUT;
-
-      val = *futex;
-      do
-        oldval = val;
-      while ((val = lll_compare_and_swap (futex, oldval, oldval + 1))
-	     != oldval);
-      newval = val + 1;
-    }
-  while (val != 0);
-
-  *futex = 2;
-
-  return 0;
-}
-hidden_proto (___lll_mutex_timedlock)

nptl/sysdeps/unix/sysv/linux/ia64/pthread_once.c

@@ -52,9 +52,9 @@ __pthread_once (once_control, init_routine)
 
 	  oldval = val;
 	  newval = (oldval & 3) | __fork_generation | 1;
+	  val = __lll_compare_and_swap (once_control, oldval, newval);
 	}
-      while ((val = lll_compare_and_swap (once_control, oldval, newval))
+      while (__builtin_expect (val != oldval, 0));
-	     != oldval);
 
       /* Check if another thread already runs the initializer.	*/
       if ((oldval & 1) != 0)
@@ -80,11 +80,7 @@ __pthread_once (once_control, init_routine)
 
 
       /* Add one to *once_control.  */
-      val = *once_control;
+      __lll_add (once_control, 1);
-      do
-	oldval = val;
-      while ((val = lll_compare_and_swap (once_control, oldval, oldval + 1))
-	     != oldval);
 
       /* Wake up all other threads.  */
       lll_futex_wake (once_control, INT_MAX);

nptl/sysdeps/unix/sysv/linux/ia64/sem_post.c

@@ -1,4 +1,5 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
+/* sem_post -- post to a POSIX semaphore.  IA-64 version.
+   Copyright (C) 2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
 
@@ -25,20 +26,15 @@
 
 #include <shlib-compat.h>
 
-
 int
 __new_sem_post (sem_t *sem)
 {
-  int oldval, val;
+  int *futex = (int *) sem;
-  int err;
+  int err, nr;
 
-  val = *(int *) sem;
+  nr = __lll_add (futex, 1);
-  do
+  err = lll_futex_wake (futex, nr + 1);
-    oldval = val;
+  if (__builtin_expect (err, 0) < 0)
-  while ((val = lll_compare_and_swap ((int *) sem, oldval, oldval + 1))
-	 != oldval);
-  err = lll_futex_wake ((int *) sem, oldval + 1);
-  if (err < 0)
     {
       __set_errno (-err);
       return -1;

nptl/sysdeps/unix/sysv/linux/ia64/sem_timedwait.c

@@ -1,92 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <errno.h>
-#include <sysdep.h>
-#include <lowlevellock.h>
-#include <internaltypes.h>
-#include <semaphore.h>
-
-#include <shlib-compat.h>
-
-
-int
-sem_timedwait (sem, abstime)
-     sem_t *sem;
-     const struct timespec *abstime;
-{
-  int oldval, val;
-
-  val = *(int *) sem;
-  do
-    {
-      while (__builtin_expect (val == 0, 0))
-	{
-	  /* Check for invalid timeout values.  */
-	  if (abstime->tv_nsec >= 1000000000)
-	    {
-	      __set_errno (EINVAL);
-	      return -1;
-	    }
-
-	  /* Get the current time.  */
-	  struct timeval tv;
-	  (void) __gettimeofday(&tv, NULL);
-
-	  /* Compute the relative timeout.  */
-	  struct timespec rt;
-	  rt.tv_sec = abstime->tv_sec - tv.tv_sec;
-	  rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
-	  if (rt.tv_nsec < 0)
-	    {
-	      rt.tv_nsec += 1000000000;
-	      --rt.tv_sec;
-	    }
-	  /* Already timed out.  */
-	  if (rt.tv_sec < 0)
-	    {
-	      __set_errno (ETIMEDOUT);
-	      return -1;
-	    }
-
-	  /* Do wait.  */
-	  int err = lll_futex_timed_wait ((int *) sem, 0, &rt);
-
-	  /* Returned after timing out?  */
-	  if (err == -ETIMEDOUT)
-	    {
-	      __set_errno (ETIMEDOUT);
-	      return -1;
-	    }
-
-	  /* Handle EINTR.  */
-	  if (err != 0 && err != -EWOULDBLOCK)
-	    {
-	      __set_errno (-err);
-	      return -1;
-	    }
-
-	  val = *(int *) sem;
-	}
-      oldval = val;
-    }
-  while ((val = lll_compare_and_swap ((int *) sem, oldval, oldval - 1))
-	 != oldval);
-  return 0;
-}

nptl/sysdeps/unix/sysv/linux/ia64/sem_trywait.c

@@ -1,51 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <errno.h>
-#include <sysdep.h>
-#include <lowlevellock.h>
-#include <internaltypes.h>
-#include <semaphore.h>
-
-#include <shlib-compat.h>
-
-
-int
-__new_sem_trywait (sem_t *sem)
-{
-  int oldval, val = *(int *) sem;
-
-  do
-    {
-      if (__builtin_expect (val == 0, 0))
-	{
-	  __set_errno (EAGAIN);
-	  return -1;
-	}
-      oldval = val;
-    }
-  while ((val = lll_compare_and_swap ((int *) sem, oldval, oldval - 1))
-	 != oldval);
-  return 0;
-}
-versioned_symbol (libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1);
-#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
-strong_alias (__new_sem_trywait, __old_sem_trywait)
-compat_symbol (libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0);
-#endif

nptl/sysdeps/unix/sysv/linux/ia64/sem_wait.c

@@ -1,64 +0,0 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <errno.h>
-#include <sysdep.h>
-#include <lowlevellock.h>
-#include <internaltypes.h>
-#include <semaphore.h>
-
-#include <shlib-compat.h>
-
-
-int
-__new_sem_wait (sem_t *sem)
-{
-  int oldval, val;
-
-  /* Atomically decrement semaphore counter if it is > 0.  */
-  val = *(int *) sem;
-  do
-    {
-      while (__builtin_expect (val == 0, 0))
-	{
-	  /* Do wait.  */
-	  int err = lll_futex_wait ((int *) sem, 0);
-
-	  /* Handle EINTR.  */
-	  if (err != 0 && err != -EWOULDBLOCK)
-	    {
-	      __set_errno (-err);
-	      return -1;
-	    }
-
-	  val = *(int *) sem;
-	}
-      oldval = val;
-    }
-  while ((val = lll_compare_and_swap ((int *) sem, oldval, oldval - 1))
-	 != oldval);
-
-  return 0;
-}
-
-versioned_symbol (libpthread, __new_sem_wait, sem_wait, GLIBC_2_1);
-#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
-strong_alias (__new_sem_wait, __old_sem_wait)
-compat_symbol (libpthread, __old_sem_wait, sem_wait, GLIBC_2_0);
-#endif

nptl/sysdeps/unix/sysv/linux/lowlevellock.c

@@ -83,11 +83,10 @@ hidden_proto (__lll_timedlock_wait)
 int
 lll_unlock_wake_cb (int *futex)
 {
-  if (__lll_add (futex, -1) - 1 != 0)
+  int val = __lll_test_and_set (futex, 0);
-    {
+
-      *futex = 0;
+  if (__builtin_expect (val > 1, 0))
     lll_futex_wake (futex, 1);
-    }
 
   return 0;
 }