1*1031c584SApple OSS Distributions /* 2*1031c584SApple OSS Distributions * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3*1031c584SApple OSS Distributions * 4*1031c584SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*1031c584SApple OSS Distributions * 6*1031c584SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*1031c584SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*1031c584SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*1031c584SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*1031c584SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*1031c584SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*1031c584SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*1031c584SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*1031c584SApple OSS Distributions * 15*1031c584SApple OSS Distributions * Please obtain a copy of the License at 16*1031c584SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*1031c584SApple OSS Distributions * 18*1031c584SApple OSS Distributions * The Original Code and all software distributed under the License are 19*1031c584SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*1031c584SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*1031c584SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*1031c584SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*1031c584SApple OSS Distributions * Please see the License for the specific language governing rights and 24*1031c584SApple OSS Distributions * limitations under the License. 25*1031c584SApple OSS Distributions * 26*1031c584SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*1031c584SApple OSS Distributions */ 28*1031c584SApple OSS Distributions /* 29*1031c584SApple OSS Distributions * Mach Operating System 30*1031c584SApple OSS Distributions * Copyright (c) 1987 Carnegie-Mellon University 31*1031c584SApple OSS Distributions * All rights reserved. The CMU software License Agreement specifies 32*1031c584SApple OSS Distributions * the terms and conditions for use and redistribution. 33*1031c584SApple OSS Distributions */ 34*1031c584SApple OSS Distributions /* 35*1031c584SApple OSS Distributions * File: vm_pager.h 36*1031c584SApple OSS Distributions * Author: Avadis Tevanian, Jr., Michael Wayne Young 37*1031c584SApple OSS Distributions * 38*1031c584SApple OSS Distributions * Copyright (C) 1986, Avadis Tevanian, Jr., Michael Wayne Young 39*1031c584SApple OSS Distributions * Copyright (C) 1985, Avadis Tevanian, Jr., Michael Wayne Young 40*1031c584SApple OSS Distributions * 41*1031c584SApple OSS Distributions * Pager routine interface definition 42*1031c584SApple OSS Distributions */ 43*1031c584SApple OSS Distributions 44*1031c584SApple OSS Distributions #ifndef _VM_PAGER_ 45*1031c584SApple OSS Distributions #define _VM_PAGER_ 46*1031c584SApple OSS Distributions 47*1031c584SApple OSS Distributions #include <mach/boolean.h> 48*1031c584SApple OSS Distributions 49*1031c584SApple OSS Distributions struct pager_struct { 50*1031c584SApple OSS Distributions boolean_t is_device; 51*1031c584SApple OSS Distributions }; 52*1031c584SApple OSS Distributions typedef struct pager_struct *vm_pager_t; 53*1031c584SApple OSS Distributions #define vm_pager_null ((vm_pager_t) 0) 54*1031c584SApple OSS Distributions 55*1031c584SApple OSS Distributions #define PAGER_SUCCESS 0 /* page read or written */ 56*1031c584SApple OSS Distributions #define PAGER_ABSENT 1 /* pager does not have page */ 57*1031c584SApple OSS Distributions #define PAGER_ERROR 2 /* pager unable to read or write page */ 58*1031c584SApple OSS Distributions 59*1031c584SApple OSS Distributions #if 0 60*1031c584SApple OSS Distributions #ifdef KERNEL 61*1031c584SApple OSS Distributions typedef int pager_return_t; 62*1031c584SApple OSS Distributions 63*1031c584SApple OSS Distributions extern vm_pager_t vm_pager_allocate(void); 64*1031c584SApple OSS Distributions extern void vm_pager_deallocate(void); 65*1031c584SApple OSS Distributions extern pager_return_t vm_pager_get(void); 66*1031c584SApple OSS Distributions extern pager_return_t vm_pager_put(void); 67*1031c584SApple OSS Distributions extern boolean_t vm_pager_has_page(void); 68*1031c584SApple OSS Distributions #endif /* KERNEL */ 69*1031c584SApple OSS Distributions #endif 70*1031c584SApple OSS Distributions 71*1031c584SApple OSS Distributions #endif /* _VM_PAGER_ */ 72