1 /* $NetBSD: lock.h,v 1.2 2009/10/21 16:06:59 snj Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _ARCH_USERMODE_INCLUDE_LOCK_H 30 #define _ARCH_USERMODE_INCLUDE_LOCK_H 31 32 __inline static void 33 __cpu_simple_lock_init(__cpu_simple_lock_t *lockp) 34 { 35 } 36 37 __inline static void 38 __cpu_simple_lock(__cpu_simple_lock_t *lockp) 39 { 40 } 41 42 __inline static void 43 __cpu_simple_unlock(__cpu_simple_lock_t *lockp) 44 { 45 } 46 47 __inline static int 48 __SIMPLELOCK_LOCKED_P(__cpu_simple_lock_t *lockp) 49 { 50 return *lockp == __SIMPLELOCK_LOCKED; 51 } 52 53 __inline static int 54 __SIMPLELOCK_UNLOCKED_P(__cpu_simple_lock_t *lockp) 55 { 56 return *lockp == __SIMPLELOCK_UNLOCKED; 57 } 58 59 __inline static int 60 __cpu_simple_lock_try(__cpu_simple_lock_t *lockp) 61 { 62 return __SIMPLELOCK_UNLOCKED; 63 } 64 65 #endif /* !_ARCH_USERMODE_INCLUDE_LOCK_H */ 66