1 | /* |
2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
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. |
14 | * |
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 |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
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. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
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_ */ |
136 | |