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Annotation of XNU/osfmk/vm/vm_pageout.h, revision 1.1

1.1     ! root        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  [email protected]
        !            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:   vm/vm_pageout.h
        !            54:  *     Author: Avadis Tevanian, Jr.
        !            55:  *     Date:   1986
        !            56:  *
        !            57:  *     Declarations for the pageout daemon interface.
        !            58:  */
        !            59: 
        !            60: #ifndef        _VM_VM_PAGEOUT_H_
        !            61: #define _VM_VM_PAGEOUT_H_
        !            62: 
        !            63: #include <mach/boolean.h>
        !            64: #include <mach/machine/vm_types.h>
        !            65: #include <vm/vm_object.h>
        !            66: #include <vm/vm_page.h>
        !            67: 
        !            68: /*
        !            69:  *     The following ifdef only exists because XMM must (currently)
        !            70:  *     be given a page at a time.  This should be removed
        !            71:  *     in the future.
        !            72:  */
        !            73: #define        DATA_WRITE_MAX  32
        !            74: #define        POINTER_T(copy) (pointer_t)(copy)
        !            75: 
        !            76: /*
        !            77:  *     Exported routines.
        !            78:  */
        !            79: extern void            vm_pageout(void);
        !            80: 
        !            81: extern vm_object_t     vm_pageout_object_allocate(
        !            82:                                        vm_page_t       m,
        !            83:                                        vm_size_t       size,
        !            84:                                        vm_offset_t     offset);
        !            85: 
        !            86: extern void            vm_pageout_object_terminate(
        !            87:                                        vm_object_t     object);
        !            88: 
        !            89: extern vm_page_t       vm_pageout_setup(
        !            90:                                        vm_page_t       m,
        !            91:                                        vm_object_t     new_object,
        !            92:                                        vm_offset_t     new_offset);
        !            93: 
        !            94: extern void            vm_pageout_cluster(
        !            95:                                        vm_page_t       m);
        !            96: 
        !            97: extern void            vm_pageout_initialize_page(
        !            98:                                        vm_page_t       m);
        !            99: 
        !           100: extern void            vm_pageclean_setup(
        !           101:                                        vm_page_t       m,
        !           102:                                        vm_page_t       new_m,
        !           103:                                        vm_object_t     new_object,
        !           104:                                        vm_offset_t     new_offset);
        !           105: 
        !           106: extern void            vm_pageclean_copy(
        !           107:                                        vm_page_t       m,
        !           108:                                        vm_page_t       new_m,
        !           109:                                        vm_object_t     new_object,
        !           110:                                        vm_offset_t     new_offset);
        !           111: 
        !           112: /* UPL exported routines and structures */
        !           113: 
        !           114: #define UPL_COMPOSITE_PAGE_LIST_MAX 16
        !           115: 
        !           116: 
        !           117: #define upl_lock_init(object)  mutex_init(&(object)->Lock, ETAP_VM_OBJ)
        !           118: #define upl_lock(object)       mutex_lock(&(object)->Lock)
        !           119: #define upl_unlock(object)     mutex_unlock(&(object)->Lock)
        !           120: 
        !           121: 
        !           122: /* universal page list structure */
        !           123: 
        !           124: struct upl {
        !           125:        decl_mutex_data(,       Lock)   /* Synchronization */
        !           126:        int             ref_count;
        !           127:        int             flags;
        !           128:        vm_object_t     src_object; /* object derived from */
        !           129:        vm_offset_t     offset;
        !           130:        vm_size_t       size;       /* size in bytes of the address space */
        !           131:        vm_offset_t     kaddr;      /* secondary mapping in kernel */
        !           132:        vm_object_t     map_object;
        !           133: };
        !           134: 
        !           135: 
        !           136: 
        !           137: /* upl struct flags */
        !           138: #define UPL_PAGE_LIST_MAPPED   0x1
        !           139: #define UPL_KERNEL_MAPPED      0x2
        !           140: #define        UPL_CLEAR_DIRTY         0x4
        !           141: #define UPL_COMPOSITE_LIST     0x8
        !           142: #define UPL_INTERNAL           0x10
        !           143: 
        !           144: 
        !           145: 
        !           146: 
        !           147: 
        !           148:         
        !           149: 
        !           150: #endif /* _VM_VM_PAGEOUT_H_ */

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