From 9ad7bd71fb25affd53a0ace2d7f922ffc8c570d1 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 3 Aug 2008 18:56:49 +0000
Subject: 	* Makefile (sysdeps_headers): Add spin-lock-inline.h. 
 (SYSDEP_PATH): Move sysdeps/i386 right after 	sysdeps/$(MICROKERNEL)/i386. 
 * include/pthread/pthread.h: Include <bits/spin-lock-inline.h>. 	*
 sysdeps/i386/bits/spin-lock.h: Move inlines to... 	*
 sysdeps/i386/bits/spin-lock-inline.h: ... new file. 	*
 sysdeps/mach/bits/spin-lock.h: Move inlines to... 	*
 sysdeps/mach/bits/spin-lock-inline.h: ... new file.

---
 sysdeps/i386/bits/spin-lock-inline.h | 98 ++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 sysdeps/i386/bits/spin-lock-inline.h

(limited to 'sysdeps/i386/bits/spin-lock-inline.h')

diff --git a/sysdeps/i386/bits/spin-lock-inline.h b/sysdeps/i386/bits/spin-lock-inline.h
new file mode 100644
index 00000000..0f3ca581
--- /dev/null
+++ b/sysdeps/i386/bits/spin-lock-inline.h
@@ -0,0 +1,98 @@
+/* Machine-specific definitions for spin locks.  i386 version.
+   Copyright (C) 2000, 2005, 2008 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * Never include this file directly; use <pthread.h> or <cthreads.h> instead.
+ */
+
+#ifndef _BITS_SPIN_LOCK_INLINE_H
+#define _BITS_SPIN_LOCK_INLINE_H	1
+
+#include <features.h>
+#include <bits/spin-lock.h>
+
+__BEGIN_DECLS
+
+#if defined __USE_EXTERN_INLINES || defined _FORCE_INLINES
+
+# ifndef __EBUSY
+#  include <errno.h>
+#  define __EBUSY EBUSY
+# endif
+
+# ifndef __PT_SPIN_INLINE
+#  define __PT_SPIN_INLINE __extern_inline
+# endif
+
+__PT_SPIN_INLINE int __pthread_spin_destroy (__pthread_spinlock_t *__lock);
+
+__PT_SPIN_INLINE int
+__pthread_spin_destroy (__pthread_spinlock_t *__lock)
+{
+  return 0;
+}
+
+__PT_SPIN_INLINE int __pthread_spin_init (__pthread_spinlock_t *__lock,
+					  int __pshared);
+
+__PT_SPIN_INLINE int
+__pthread_spin_init (__pthread_spinlock_t *__lock, int __pshared)
+{
+  *__lock = __SPIN_LOCK_INITIALIZER;
+  return 0;
+}
+
+__PT_SPIN_INLINE int __pthread_spin_trylock (__pthread_spinlock_t *__lock);
+
+__PT_SPIN_INLINE int
+__pthread_spin_trylock (__pthread_spinlock_t *__lock)
+{
+  int __locked;
+  __asm__ __volatile ("xchgl %0, %1"
+		      : "=&r" (__locked), "=m" (*__lock) : "0" (1) : "memory");
+  return __locked ? __EBUSY : 0;
+}
+
+__extern_inline int __pthread_spin_lock (__pthread_spinlock_t *__lock);
+extern int _pthread_spin_lock (__pthread_spinlock_t *__lock);
+
+__extern_inline int
+__pthread_spin_lock (__pthread_spinlock_t *__lock)
+{
+  if (__pthread_spin_trylock (__lock))
+    return _pthread_spin_lock (__lock);
+  return 0;
+}
+
+__PT_SPIN_INLINE int __pthread_spin_unlock (__pthread_spinlock_t *__lock);
+
+__PT_SPIN_INLINE int
+__pthread_spin_unlock (__pthread_spinlock_t *__lock)
+{
+  int __unlocked;
+  __asm__ __volatile ("xchgl %0, %1"
+		      : "=&r" (__unlocked), "=m" (*__lock) : "0" (0) : "memory");
+  return 0;
+}
+
+#endif /* Use extern inlines or force inlines.  */
+
+__END_DECLS
+
+#endif /* bits/spin-lock.h */
-- 
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