Blame src/lib/libast/astsa/aso.h
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/***********************************************************************
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* *
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* This software is part of the ast package *
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* Copyright (c) 1985-2012 AT&T Intellectual Property *
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* and is licensed under the *
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* Eclipse Public License, Version 1.0 *
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* by AT&T Intellectual Property *
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* *
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* A copy of the License is available at *
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* http://www.eclipse.org/org/documents/epl-v10.html *
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* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
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* *
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* Information and Software Systems Research *
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* AT&T Research *
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* Florham Park NJ *
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* *
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* Glenn Fowler <gsf@research.att.com> *
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* David Korn <dgk@research.att.com> *
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* Phong Vo <kpv@research.att.com> *
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* *
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***********************************************************************/
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#ifndef _ASO_H
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#define _ASO_H 1
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#define ASO_UNLOCK 0 /* unlock if key matches */
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#define ASO_TRYLOCK 1 /* matched key means successful attempt */
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#define ASO_LOCK 2 /* matched key first, then spin-lock */
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#define ASO_SPINLOCK 3 /* no matching of key before locking */
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extern int asolock(unsigned int volatile*, unsigned int, int);
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#endif
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