FreeBSD/Linux Kernel Cross Reference
sys/sys/_domainset.h

     /*-
      * 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;
            unsigned int                    dr_iter;
    };
    
    #endif /* !_SYS__DOMAINSET_H_ */

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