The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2017,  Jeffrey Roberson <jeff@freebsd.org>
    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 unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * $FreeBSD: stable/12/sys/sys/_domainset.h 339998 2018-11-01 15:19:36Z markj $
   29  */
   30 
   31 #ifndef _SYS__DOMAINSET_H_
   32 #define _SYS__DOMAINSET_H_
   33 
   34 #include <sys/_bitset.h>
   35 
   36 #ifdef _KERNEL
   37 #define DOMAINSET_SETSIZE       MAXMEMDOM
   38 #endif
   39 
   40 #define DOMAINSET_MAXSIZE       256
   41 
   42 #ifndef DOMAINSET_SETSIZE
   43 #define DOMAINSET_SETSIZE       DOMAINSET_MAXSIZE
   44 #endif
   45 
   46 BITSET_DEFINE(_domainset, DOMAINSET_SETSIZE);
   47 typedef struct _domainset domainset_t;
   48 
   49 /*
   50  * This structure is intended to be embedded in objects which have policy
   51  * attributes.  Each object keeps its own iterator so round-robin is
   52  * synchronized and accurate.
   53  */
   54 struct domainset;
   55 struct domainset_ref {
   56         struct domainset * volatile     dr_policy;
   57         unsigned int                    dr_iter;
   58 };
   59 
   60 #endif /* !_SYS__DOMAINSET_H_ */

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