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/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2017,	Jeffrey Roberson <jeff@freebsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#ifndef _SYS__DOMAINSET_H_
#define	_SYS__DOMAINSET_H_

#include <sys/_bitset.h>

#ifdef _KERNEL
#define	DOMAINSET_SETSIZE	MAXMEMDOM
#endif

#define	DOMAINSET_MAXSIZE	256

#ifndef	DOMAINSET_SETSIZE
#define	DOMAINSET_SETSIZE	DOMAINSET_MAXSIZE
#endif

BITSET_DEFINE(_domainset, DOMAINSET_SETSIZE);
typedef struct _domainset domainset_t;

/*
 * This structure is intended to be embedded in objects which have policy
 * attributes.  Each object keeps its own iterator so round-robin is
 * synchronized and accurate.
 */
struct domainset;
struct domainset_ref {
	struct domainset * volatile	dr_policy;
	int				dr_iterator;
};

#endif /* !_SYS__DOMAINSET_H_ */