/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * Mach Operating System * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* */ /* * File: vm/vm_pageout.h * Author: Avadis Tevanian, Jr. * Date: 1986 * * Declarations for the pageout daemon interface. */ #ifndef _VM_VM_PAGEOUT_H_ #define _VM_VM_PAGEOUT_H_ #include <mach/boolean.h> #include <mach/machine/vm_types.h> #include <vm/vm_object.h> #include <vm/vm_page.h> extern unsigned int vm_pageout_scan_event_counter; /* * The following ifdef only exists because XMM must (currently) * be given a page at a time. This should be removed * in the future. */ #define DATA_WRITE_MAX 16 #define POINTER_T(copy) (pointer_t)(copy) /* * Exported routines. */ extern void vm_pageout(void); extern vm_object_t vm_pageout_object_allocate( vm_page_t m, vm_size_t size, vm_object_offset_t offset); extern void vm_pageout_object_terminate( vm_object_t object); extern vm_page_t vm_pageout_setup( vm_page_t m, vm_object_t new_object, vm_object_offset_t new_offset); extern void vm_pageout_cluster( vm_page_t m); extern void vm_pageout_initialize_page( vm_page_t m); extern void vm_pageclean_setup( vm_page_t m, vm_page_t new_m, vm_object_t new_object, vm_object_offset_t new_offset); extern void vm_pageclean_copy( vm_page_t m, vm_page_t new_m, vm_object_t new_object, vm_object_offset_t new_offset); /* UPL exported routines and structures */ #define UPL_COMPOSITE_PAGE_LIST_MAX 16 #define upl_lock_init(object) mutex_init(&(object)->Lock, ETAP_VM_OBJ) #define upl_lock(object) mutex_lock(&(object)->Lock) #define upl_unlock(object) mutex_unlock(&(object)->Lock) /* universal page list structure */ struct upl { decl_mutex_data(, Lock) /* Synchronization */ int ref_count; int flags; vm_object_t src_object; /* object derived from */ vm_object_offset_t offset; vm_size_t size; /* size in bytes of the address space */ vm_offset_t kaddr; /* secondary mapping in kernel */ vm_object_t map_object; #ifdef UBC_DEBUG unsigned int ubc_alias1; unsigned int ubc_alias2; queue_chain_t uplq; /* List of outstanding upls on an obj */ #endif /* UBC_DEBUG */ }; /* upl struct flags */ #define UPL_PAGE_LIST_MAPPED 0x1 #define UPL_KERNEL_MAPPED 0x2 #define UPL_CLEAR_DIRTY 0x4 #define UPL_COMPOSITE_LIST 0x8 #define UPL_INTERNAL 0x10 #define UPL_PAGE_SYNC_DONE 0x20 #define UPL_DEVICE_MEMORY 0x40 #define UPL_PAGEOUT 0x80 #define UPL_PAGE_TICKET_MASK 0xF00 #define UPL_PAGE_TICKET_SHIFT 8 #endif /* _VM_VM_PAGEOUT_H_ */