osfmk/mach/memory_object_control.defs

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50 /*
  51  */
  52 /*
  53  * File:        mach/memory_object_control.defs
  54  *
  55  * Abstract:
  56  *      Basic Mach external memory management interface declaration.
  57  */
  58
  59 subsystem
  60 #if     KERNEL_USER
  61           KernelUser
  62 #endif  KERNEL_USER
  63 #if     KERNEL_SERVER
  64           KernelServer
  65 #endif  KERNEL_SERVER
  66                      memory_object_control 2000;
  67
  68 #ifdef  MACH_KERNEL
  69 #include <advisory_pageout.h>
  70 #endif  /* MACH_KERNEL */
  71
  72 #include <mach/std_types.defs>
  73 #include <mach/mach_types.defs>
  74
  75 /*
  76  *      Retrieves the attributes currently associated with
  77  *      a memory object.
  78  */
  79 routine memory_object_get_attributes(
  80                 memory_control  : memory_object_control_t;
  81                 flavor          : memory_object_flavor_t;
  82         out     attributes      : memory_object_info_t, CountInOut);
  83
  84
  85 routine memory_object_change_attributes(
  86                 memory_control  : memory_object_control_t;
  87                 flavor          : memory_object_flavor_t;
  88                 attributes      : memory_object_info_t
  89                 );
  90
  91 routine memory_object_synchronize_completed (
  92                 memory_control  : memory_object_control_t;
  93                 offset          : memory_object_offset_t;
  94                 length          : vm_offset_t);
  95
  96 /*
  97  *      Control use of the data associated with the given
  98  *      memory object.  For each page in the given range,
  99  *      perform the following operations, in order:
 100  *              1)  restrict access to the page (disallow
 101  *                  forms specified by "prot");
 102  *              2)  write back modifications (if "should_return"
 103  *                  is RETURN_DIRTY and the page is dirty, or
 104  *                  "should_return" is RETURN_ALL and the page
 105  *                  is either dirty or precious); and,
 106  *              3)  flush the cached copy (if "should_flush"
 107  *                  is asserted).
 108  *      The set of pages is defined by a starting offset
 109  *      ("offset") and size ("size").  Only pages with the
 110  *      same page alignment as the starting offset are
 111  *      considered.
 112  */
 113 routine memory_object_lock_request(
 114                 memory_control  : memory_object_control_t;
 115                 offset          : memory_object_offset_t;
 116                 size            : memory_object_size_t;
 117                 should_return   : memory_object_return_t;
 118                 flags           : integer_t;
 119                 lock_value      : vm_prot_t
 120                 );
 121
 122
 123 /*
 124  */
 125 routine memory_object_destroy(
 126                 memory_control  : memory_object_control_t;
 127                 reason          : kern_return_t);
 128
 129 /*
 130  *      The pager gets memory_object_data_request and memory_object_data_return
 131  *      calls to inform it that data within the memory object needs to be
 132  *      manipulated.  Those requests simply identify the range in the memory
 133  *      object that needs servicing, but not the data itself.  The pager
 134  *      turns around and requests one (or several) Universal Page Lists (UPLs)
 135  *      from the VM cache object associated with the memory object via one
 136  *      of the following calls.  These UPLs are then committed (or aborted)
 137  *      in whole (or in ranges) as the processing completes.
 138  */
 139
 140 routine memory_object_upl_request(
 141                 memory_control  : memory_object_control_t;
 142         in      offset          : memory_object_offset_t;
 143         in      size            : vm_size_t;
 144         out     upl             : upl_t;
 145         out     page_list       : upl_page_info_array_t, CountInOut;
 146         in      cntrl_flags     : integer_t);
 147
 148 routine memory_object_super_upl_request(
 149                 memory_control          : memory_object_control_t;
 150         in      offset          : memory_object_offset_t;
 151         in      size            : vm_size_t;
 152         in      super_size      : vm_size_t;
 153         out     upl             : upl_t;
 154         out     page_list       : upl_page_info_array_t, CountInOut;
 155         in      cntrl_flags     : integer_t);
 156
 157 /*
 158  * This functions allows a single page to be manipulated with less overhead
 159  * than creating a UPL.
 160  */
 161 routine memory_object_page_op(
 162                 memory_control  : memory_object_control_t;
 163         in      offset          : memory_object_offset_t;
 164         in      ops             : integer_t;
 165         out     phys_entry      : vm_offset_t;
 166         out     flags           : integer_t);
 167
 168 routine memory_object_recover_named(
 169                 memory_control  : memory_object_control_t;
 170         in      wait_on_terminating : boolean_t);
 171
 172 routine memory_object_release_name(
 173                 memory_control  : memory_object_control_t;
 174                 flags           : integer_t);
 175
 176
 177