projects / apple / xnu.git / blame
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|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 8ad349bb | 5 | * |
| 2d21ac55 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b A |
27 | */ |
| 28 | /* | |
| 29 | * @OSF_COPYRIGHT@ | |
| 30 | */ | |
| 31 | /* | |
| 32 | * HISTORY | |
| 33 | * | |
| 34 | * Revision 1.1.1.1 1998/09/22 21:05:32 wsanchez | |
| 35 | * Import of Mac OS X kernel (~semeria) | |
| 36 | * | |
| 37 | * Revision 1.1.1.1 1998/03/07 02:25:56 wsanchez | |
| 38 | * Import of OSF Mach kernel (~mburg) | |
| 39 | * | |
| 40 | * Revision 1.1.4.1 1995/04/07 19:02:38 barbou | |
| 41 | * Merged into mainline. | |
| 42 | * [95/03/09 barbou] | |
| 43 | * | |
| 44 | * Revision 1.1.2.2 1995/02/13 15:35:45 barbou | |
| 45 | * Merged/ported to MK6. | |
| 46 | * | |
| 47 | * Revision 1.1.1.3 94/08/12 15:44:39 barbou | |
| 48 | * VM Merge - Task Swapper. | |
| 49 | * | |
| 50 | * Changed host_priv_t into host_t. | |
| 51 | * [94/07/28 barbou] | |
| 52 | * | |
| 53 | * Revision 1.1.1.2 1994/07/28 15:33:46 barbou | |
| 54 | * Copied from IK. | |
| 55 | * | |
| 56 | * Revision 3.0.3.2 1994/01/20 19:53:01 chasb | |
| 57 | * Remove excessively restrictive copyright notice | |
| 58 | * [1994/01/20 17:50:40 chasb] | |
| 59 | * | |
| 60 | * Revision 3.0.3.1 1993/12/20 21:06:49 gupta | |
| 61 | * Expanded C O P Y R I G H T | |
| 62 | * [1993/12/17 22:19:22 gupta] | |
| 63 | * | |
| 64 | * Revision 3.0 1992/12/31 22:08:24 ede | |
| 65 | * Initial revision for OSF/1 R1.3 | |
| 66 | * | |
| 67 | * Revision 1.1.4.5 1992/03/16 18:02:52 gmf | |
| 68 | * Add TASK_SW_ELIGIBLE flag to swap_flags; prototype | |
| 69 | * task_swapout_eligible, task_swapout_ineligible. | |
| 70 | * [1992/02/12 22:01:48 gmf] | |
| 71 | * | |
| 72 | * Revision 1.1.4.4 1992/01/22 22:14:13 gmf | |
| 73 | * Change prototype for task_swappable() to use host_priv_t | |
| 74 | * instead of host_t. | |
| 75 | * [1992/01/17 17:48:13 gmf] | |
| 76 | * | |
| 77 | * Revision 1.1.4.3 1991/12/10 17:20:55 gmf | |
| 78 | * Add extern declaration for new thread. | |
| 79 | * Changed TASK_SW_WAIT flag to TASK_SW_WANT_IN. | |
| 80 | * [1991/12/10 16:19:10 gmf] | |
| 81 | * | |
| 82 | * Revision 1.1.4.2 1991/11/21 21:48:35 mmp | |
| 83 | * initial task swapping code | |
| 84 | * [1991/11/21 21:01:37 mmp] | |
| 85 | * | |
| 86 | * $EndLog$ | |
| 87 | */ | |
| 88 | ||
| 89 | /* | |
| 90 | * File: kern/task_swap.h | |
| 91 | * | |
| 92 | * Task residency management primitives declarations. | |
| 93 | */ | |
| 94 | ||
| 95 | #ifndef _KERN_TASK_SWAP_H_ | |
| 96 | #define _KERN_TASK_SWAP_H_ | |
| 97 | ||
| 98 | #include <kern/host.h> | |
| 99 | ||
| 100 | /* | |
| 101 | * swap states | |
| 102 | */ | |
| 103 | #define TASK_SW_UNSWAPPABLE 1 /* not swappable */ | |
| 104 | #define TASK_SW_IN 2 /* swapped in (resident) */ | |
| 105 | #define TASK_SW_OUT 3 /* swapped out (non-resident) */ | |
| 106 | #define TASK_SW_COMING_IN 4 /* about to be swapped in */ | |
| 107 | #define TASK_SW_GOING_OUT 5 /* being swapped out */ | |
| 108 | ||
| 109 | /* | |
| 110 | * swap flags | |
| 111 | */ | |
| 112 | #define TASK_SW_MAKE_UNSWAPPABLE 0x01 /* make it unswappable */ | |
| 113 | #define TASK_SW_WANT_IN 0x02 /* sleeping on state */ | |
| 114 | #define TASK_SW_ELIGIBLE 0x04 /* eligible for swapping */ | |
| 115 | ||
| 116 | /* | |
| 117 | * exported routines | |
| 118 | */ | |
| 119 | extern void task_swapper_init(void); | |
| 120 | extern kern_return_t task_swapin( | |
| 121 | task_t, /* task */ | |
| 122 | boolean_t); /* make_unswappable */ | |
| 123 | extern kern_return_t task_swapout(task_t /* task */); | |
| 124 | extern void task_swapper(void); | |
| 125 | extern void task_swap_swapout_thread(void); | |
| 126 | extern void compute_vm_averages(void); | |
| 127 | extern kern_return_t task_swappable( | |
| 128 | host_priv_t, /* host */ | |
| 129 | task_t, /* task */ | |
| 130 | boolean_t); /* swappable */ | |
| 131 | extern void task_swapout_eligible(task_t /* task */); | |
| 132 | extern void task_swapout_ineligible(task_t /* task */); | |
| 133 | extern void swapout_ast(void); | |
| 134 | ||
| 135 | #endif /* _KERN_TASK_SWAP_H_ */ |