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authorUlrich Drepper <drepper@redhat.com>2006-10-28 05:15:26 +0000
committerUlrich Drepper <drepper@redhat.com>2006-10-28 05:15:26 +0000
commiteb0a3d0cab507fecefe390a340f74ab8e5cf7831 (patch)
treec97ac1c33a78c454c0aeb520624af29c724355d2 /nptl/pthread_cond_signal.c
parent006a8f6f626e6e4d30b73c2ee20377b6a8cce1b7 (diff)
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* sysdeps/pthread/pthread_barrier_wait.c: Move to...
	* pthread_barrier_wait.c: ...here.
	* sysdeps/pthread/pthread_cond_broadcast.c: Move to...
	* pthread_cond_broadcast.c: ...here.
	* sysdeps/pthread/pthread_cond_signal.c: Move to...
	* pthread_cond_signal.c: ...here.
	* sysdeps/pthread/pthread_cond_timedwait.c: Move to...
	* pthread_cond_timedwait.c: ...here.
	* sysdeps/pthread/pthread_cond_wait.c: Move to...
	* pthread_cond_wait.c: ...here.
	* sysdeps/pthread/pthread_once.c: Move to...
	* pthread_once.c: ...here.
	* sysdeps/pthread/pthread_rwlock_rdlock.c: Move to...
	* pthread_rwlock_rdlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_timedrdlock.c: Move to...
	* pthread_rwlock_timedrdlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_timedwrlock.c: Move to...
	* pthread_rwlock_timedwrlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_unlock.c: Move to...
	* pthread_rwlock_unlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_wrlock.c: Move to...
	* pthread_rwlock_wrlock.c: ...here.
	* sysdeps/pthread/pthread_spin_destroy.c: Move to...
	* pthread_spin_destroy.c: ...here.
	* sysdeps/pthread/pthread_spin_init.c: Move to...
	* pthread_spin_init.c: ...here.
	* sysdeps/pthread/pthread_spin_unlock.c: Move to...
	* pthread_spin_unlock.c: ...here.
	* sysdeps/pthread/pthread_getcpuclockid.c: Move to...
	* pthread_getcpuclockid.c: ...here.
Diffstat (limited to 'nptl/pthread_cond_signal.c')
-rw-r--r--nptl/pthread_cond_signal.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/nptl/pthread_cond_signal.c b/nptl/pthread_cond_signal.c
new file mode 100644
index 0000000000..5a9bbcad91
--- /dev/null
+++ b/nptl/pthread_cond_signal.c
@@ -0,0 +1,61 @@
+/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Martin Schwidefsky <schwidefsky@de.ibm.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 <endian.h>
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <pthread.h>
+#include <pthreadP.h>
+
+#include <shlib-compat.h>
+#include <kernel-features.h>
+
+
+int
+__pthread_cond_signal (cond)
+     pthread_cond_t *cond;
+{
+  /* Make sure we are alone.  */
+  lll_mutex_lock (cond->__data.__lock);
+
+  /* Are there any waiters to be woken?  */
+  if (cond->__data.__total_seq > cond->__data.__wakeup_seq)
+    {
+      /* Yes.  Mark one of them as woken.  */
+      ++cond->__data.__wakeup_seq;
+      ++cond->__data.__futex;
+
+      /* Wake one.  */
+      if (! __builtin_expect (lll_futex_wake_unlock (&cond->__data.__futex, 1,
+						     1, &cond->__data.__lock),
+						     0))
+	return 0;
+
+      lll_futex_wake (&cond->__data.__futex, 1);
+    }
+
+  /* We are done.  */
+  lll_mutex_unlock (cond->__data.__lock);
+
+  return 0;
+}
+
+versioned_symbol (libpthread, __pthread_cond_signal, pthread_cond_signal,
+		  GLIBC_2_3_2);