1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2012 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Eclipse Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.eclipse.org/org/documents/epl-v10.html * 11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #ifndef _ASO_H 23 #define _ASO_H 1 24 25 #define ASO_UNLOCK 0 /* unlock if key matches */ 26 #define ASO_TRYLOCK 1 /* matched key means successful attempt */ 27 #define ASO_LOCK 2 /* matched key first, then spin-lock */ 28 #define ASO_SPINLOCK 3 /* no matching of key before locking */ 29 30 extern int asolock(unsigned int volatile*, unsigned int, int); 31 32 #endif 33