bsd/sys/vm.h

   1 /*
   2  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  31 /*
  32  * Copyright (c) 1991, 1993
  33  *      The Regents of the University of California.  All rights reserved.
  34  *
  35  * Redistribution and use in source and binary forms, with or without
  36  * modification, are permitted provided that the following conditions
  37  * are met:
  38  * 1. Redistributions of source code must retain the above copyright
  39  *    notice, this list of conditions and the following disclaimer.
  40  * 2. Redistributions in binary form must reproduce the above copyright
  41  *    notice, this list of conditions and the following disclaimer in the
  42  *    documentation and/or other materials provided with the distribution.
  43  * 3. All advertising materials mentioning features or use of this software
  44  *    must display the following acknowledgement:
  45  *      This product includes software developed by the University of
  46  *      California, Berkeley and its contributors.
  47  * 4. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  *
  63  *      @(#)vm.h        8.5 (Berkeley) 5/11/95
  64  */
  65 /* HISTORY
  66  *  05-Jun-95  Mac Gillon (mgillon) at NeXT
  67  *      4.4 code uses this file to import MACH API
  68  */
  69
  70 #ifndef _SYS_VM_H
  71 #define _SYS_VM_H
  72
  73 #include <sys/appleapiopts.h>
  74 #include <sys/cdefs.h>
  75
  76 #ifdef BSD_KERNEL_PRIVATE
  77
  78 /* Machine specific config stuff */
  79 #if     defined(KERNEL) && !defined(MACH_USER_API)
  80 #include <sys/vmmeter.h>
  81 #include <sys/queue.h>
  82 #include <mach/vm_param.h>
  83 #endif
  84
  85 /*
  86  * Shareable process virtual address space.
  87  * May eventually be merged with vm_map.
  88  * Several fields are temporary (text, data stuff).
  89  */
  90 struct vmspace {
  91         int     vm_refcnt;      /* number of references */
  92         caddr_t vm_shm;         /* SYS5 shared memory private data XXX */
  93 /* we copy from vm_startcopy to the end of the structure on fork */
  94 #define vm_startcopy vm_rssize
  95         segsz_t vm_rssize;      /* current resident set size in pages */
  96         segsz_t vm_swrss;       /* resident set size before last swap */
  97         segsz_t vm_tsize;       /* text size (pages) XXX */
  98         segsz_t vm_dsize;       /* data size (pages) XXX */
  99         segsz_t vm_ssize;       /* stack size (pages) */
 100         caddr_t vm_taddr;       /* user virtual address of text XXX */
 101         caddr_t vm_daddr;       /* user virtual address of data XXX */
 102         caddr_t vm_maxsaddr;    /* user VA at max stack growth */
 103 };
 104
 105 #ifdef KERNEL
 106 // LP64todo - should this move?
 107 /* LP64 version of vmspace.  all pointers
 108  * grow when we're dealing with a 64-bit process.
 109  * WARNING - keep in sync with vmspace
 110  */
 111
 112 struct user_vmspace {
 113         int             vm_refcnt;      /* number of references */
 114         user_addr_t     vm_shm __attribute((aligned(8)));                       /* SYS5 shared memory private data XXX */
 115         segsz_t         vm_rssize;              /* current resident set size in pages */
 116         segsz_t         vm_swrss;               /* resident set size before last swap */
 117         segsz_t         vm_tsize;               /* text size (pages) XXX */
 118         segsz_t         vm_dsize;               /* data size (pages) XXX */
 119         segsz_t         vm_ssize;               /* stack size (pages) */
 120         user_addr_t     vm_taddr __attribute((aligned(8)));       /* user virtual address of text XXX */
 121         user_addr_t     vm_daddr;       /* user virtual address of data XXX */
 122         user_addr_t vm_maxsaddr;        /* user VA at max stack growth */
 123 };
 124
 125 #endif /* KERNEL */
 126
 127 #include <kern/thread.h>
 128
 129 #else /* BSD_KERNEL_PRIVATE */
 130 /* just to keep kinfo_proc happy */
 131 /* NOTE: Pointer fields are size variant for LP64 */
 132 struct vmspace {
 133         int32_t dummy;
 134         caddr_t dummy2;
 135         int32_t dummy3[5];
 136         caddr_t dummy4[3];
 137 };
 138
 139 #endif /* BSD_KERNEL_PRIVATE */
 140
 141 #ifdef KERNEL
 142
 143 __BEGIN_DECLS
 144 struct proc *current_proc(void);
 145 __END_DECLS
 146
 147 #endif /* KERNEL */
 148
 149 #endif /* _SYS_VM_H */