71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/*
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* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/*
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* Mach Operating System
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* Copyright (c) 1987 Carnegie-Mellon University
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* All rights reserved. The CMU software License Agreement specifies
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* the terms and conditions for use and redistribution.
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*/
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/*
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* File: vm_pager.h
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* Author: Avadis Tevanian, Jr., Michael Wayne Young
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*
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* Copyright (C) 1986, Avadis Tevanian, Jr., Michael Wayne Young
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* Copyright (C) 1985, Avadis Tevanian, Jr., Michael Wayne Young
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*
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* Pager routine interface definition
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*/
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#ifndef _VM_PAGER_
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#define _VM_PAGER_
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#include <mach/boolean.h>
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struct pager_struct {
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boolean_t is_device;
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};
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typedef struct pager_struct *vm_pager_t;
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#define vm_pager_null ((vm_pager_t) 0)
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#define PAGER_SUCCESS 0 /* page read or written */
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#define PAGER_ABSENT 1 /* pager does not have page */
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#define PAGER_ERROR 2 /* pager unable to read or write page */
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#if 0
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#ifdef KERNEL
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typedef int pager_return_t;
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extern vm_pager_t vm_pager_allocate(void);
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extern void vm_pager_deallocate(void);
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extern pager_return_t vm_pager_get(void);
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extern pager_return_t vm_pager_put(void);
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extern boolean_t vm_pager_has_page(void);
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#endif /* KERNEL */
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#endif
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#endif /* _VM_PAGER_ */
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