diff options
Diffstat (limited to 'sysdeps/stub/machine-lock.h')
-rw-r--r-- | sysdeps/stub/machine-lock.h | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/sysdeps/stub/machine-lock.h b/sysdeps/stub/machine-lock.h deleted file mode 100644 index 3776bb0049..0000000000 --- a/sysdeps/stub/machine-lock.h +++ /dev/null @@ -1,64 +0,0 @@ -/* Machine-specific definition for spin locks. Stub version. - Copyright (C) 1994, 1997 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. */ - -#ifndef _MACHINE_LOCK_H -#define _MACHINE_LOCK_H - -/* The type of a spin lock variable. */ - -typedef volatile int __spin_lock_t; - -/* Value to initialize `__spin_lock_t' variables to. */ - -#define __SPIN_LOCK_INITIALIZER 0 - - -#ifndef _EXTERN_INLINE -#define _EXTERN_INLINE extern __inline -#endif - -/* Unlock LOCK. */ - -_EXTERN_INLINE void -__spin_unlock (__spin_lock_t *__lock) -{ - *__lock = 0; -} - -/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */ - -_EXTERN_INLINE int -__spin_try_lock (__spin_lock_t *__lock) -{ - if (*__lock) - return 0; - *__lock = 1; - return 1; -} - -/* Return nonzero if LOCK is locked. */ - -_EXTERN_INLINE int -__spin_lock_locked (__spin_lock_t *__lock) -{ - return *__lock != 0; -} - - -#endif /* machine-lock.h */ |