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Annotation of Net2/vm/vm.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1991 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)vm.h        7.1 (Berkeley) 5/5/91
        !            34:  */
        !            35: 
        !            36: #ifndef VM_H
        !            37: #define VM_H
        !            38: #include <vm/vm_param.h>
        !            39: #include <vm/lock.h>
        !            40: #include <vm/queue.h>
        !            41: #include <vm/vm_prot.h>
        !            42: #include <vm/vm_inherit.h>
        !            43: #include <vm/vm_map.h>
        !            44: #include <vm/vm_object.h>
        !            45: #include <vm/vm_statistics.h>
        !            46: #include <vm/pmap.h>
        !            47: 
        !            48: /*
        !            49:  * Shareable process virtual address space.
        !            50:  * May eventually be merged with vm_map.
        !            51:  * Several fields are temporary (text, data stuff).
        !            52:  */
        !            53: struct vmspace {
        !            54:        struct  vm_map vm_map;  /* VM address map */
        !            55:        struct  pmap vm_pmap;   /* private physical map */
        !            56:        int     vm_refcnt;      /* number of references */
        !            57:        caddr_t vm_shm;         /* SYS5 shared memory private data XXX */
        !            58: /* we copy from vm_startcopy to the end of the structure on fork */
        !            59: #define vm_startcopy vm_rssize
        !            60:        segsz_t vm_rssize;      /* current resident set size in pages */
        !            61:        segsz_t vm_swrss;       /* resident set size before last swap */
        !            62:        segsz_t vm_tsize;       /* text size (pages) XXX */
        !            63:        segsz_t vm_dsize;       /* data size (pages) XXX */
        !            64:        segsz_t vm_ssize;       /* stack size (pages) */
        !            65:        caddr_t vm_taddr;       /* user virtual address of text XXX */
        !            66:        caddr_t vm_daddr;       /* user virtual address of data XXX */
        !            67:        caddr_t vm_maxsaddr;    /* user VA at max stack growth */
        !            68: };
        !            69: 
        !            70: struct vmspace *vmspace_alloc __P((vm_offset_t min, vm_offset_t max,
        !            71:                        int pageable));
        !            72: struct vmspace *vmspace_fork __P((struct vmspace *));
        !            73: void   vmspace_free __P((struct vmspace *));
        !            74: #endif /* VM_H */

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