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Annotation of XNU/osfmk/kern/task_swap.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * @OSF_COPYRIGHT@
        !            24:  */
        !            25: /*
        !            26:  * HISTORY
        !            27:  * 
        !            28:  * Revision 1.1.1.1  1998/09/22 21:05:32  wsanchez
        !            29:  * Import of Mac OS X kernel (~semeria)
        !            30:  *
        !            31:  * Revision 1.1.1.1  1998/03/07 02:25:56  wsanchez
        !            32:  * Import of OSF Mach kernel (~mburg)
        !            33:  *
        !            34:  * Revision 1.1.4.1  1995/04/07  19:02:38  barbou
        !            35:  *     Merged into mainline.
        !            36:  *     [95/03/09            barbou]
        !            37:  *
        !            38:  * Revision 1.1.2.2  1995/02/13  15:35:45  barbou
        !            39:  *     Merged/ported to MK6.
        !            40:  * 
        !            41:  * Revision 1.1.1.3  94/08/12  15:44:39  barbou
        !            42:  *     VM Merge - Task Swapper.
        !            43:  * 
        !            44:  *     Changed host_priv_t into host_t.
        !            45:  *     [94/07/28            barbou]
        !            46:  * 
        !            47:  * Revision 1.1.1.2  1994/07/28  15:33:46  barbou
        !            48:  *     Copied from IK.
        !            49:  * 
        !            50:  * Revision 3.0.3.2  1994/01/20  19:53:01  chasb
        !            51:  *     Remove excessively restrictive copyright notice
        !            52:  *     [1994/01/20  17:50:40  chasb]
        !            53:  * 
        !            54:  * Revision 3.0.3.1  1993/12/20  21:06:49  gupta
        !            55:  *     Expanded C O P Y R I G H T
        !            56:  *     [1993/12/17  22:19:22  gupta]
        !            57:  * 
        !            58:  * Revision 3.0  1992/12/31  22:08:24  ede
        !            59:  *     Initial revision for OSF/1 R1.3
        !            60:  * 
        !            61:  * Revision 1.1.4.5  1992/03/16  18:02:52  gmf
        !            62:  *     Add TASK_SW_ELIGIBLE flag to swap_flags; prototype
        !            63:  *     task_swapout_eligible, task_swapout_ineligible.
        !            64:  *     [1992/02/12  22:01:48  gmf]
        !            65:  * 
        !            66:  * Revision 1.1.4.4  1992/01/22  22:14:13  gmf
        !            67:  *     Change prototype for task_swappable() to use host_priv_t
        !            68:  *     instead of host_t.
        !            69:  *     [1992/01/17  17:48:13  gmf]
        !            70:  * 
        !            71:  * Revision 1.1.4.3  1991/12/10  17:20:55  gmf
        !            72:  *     Add extern declaration for new thread.
        !            73:  *     Changed TASK_SW_WAIT flag to TASK_SW_WANT_IN.
        !            74:  *     [1991/12/10  16:19:10  gmf]
        !            75:  * 
        !            76:  * Revision 1.1.4.2  1991/11/21  21:48:35  mmp
        !            77:  *     initial task swapping code
        !            78:  *     [1991/11/21  21:01:37  mmp]
        !            79:  * 
        !            80:  * $EndLog$
        !            81:  */
        !            82: 
        !            83: /*      
        !            84:  *             File:   kern/task_swap.h
        !            85:  *      
        !            86:  *     Task residency management primitives declarations.
        !            87:  */
        !            88: 
        !            89: #ifndef        _KERN_TASK_SWAP_H_
        !            90: #define        _KERN_TASK_SWAP_H_
        !            91: 
        !            92: #include <kern/host.h>
        !            93: 
        !            94: /*
        !            95:  *     swap states
        !            96:  */
        !            97: #define TASK_SW_UNSWAPPABLE    1       /* not swappable */
        !            98: #define TASK_SW_IN             2       /* swapped in (resident) */
        !            99: #define TASK_SW_OUT            3       /* swapped out (non-resident) */
        !           100: #define TASK_SW_COMING_IN      4       /* about to be swapped in */
        !           101: #define TASK_SW_GOING_OUT      5       /* being swapped out */
        !           102: 
        !           103: /*
        !           104:  *     swap flags
        !           105:  */
        !           106: #define TASK_SW_MAKE_UNSWAPPABLE       0x01    /* make it unswappable */
        !           107: #define TASK_SW_WANT_IN                        0x02    /* sleeping on state */
        !           108: #define TASK_SW_ELIGIBLE               0x04    /* eligible for swapping */
        !           109: 
        !           110: /*
        !           111:  * exported routines
        !           112:  */
        !           113: extern void task_swapper_init(void);
        !           114: extern kern_return_t task_swapin(
        !           115:                                task_t,         /* task */
        !           116:                                boolean_t);     /* make_unswappable */
        !           117: extern kern_return_t task_swapout(task_t /* task */);
        !           118: extern void task_swapper(void);
        !           119: extern void task_swap_swapout_thread(void);
        !           120: extern void compute_vm_averages(void);
        !           121: extern kern_return_t task_swappable(
        !           122:                                host_t,         /* host */
        !           123:                                task_t,         /* task */
        !           124:                                boolean_t);     /* swappable */
        !           125: extern void task_swapout_eligible(task_t /* task */);
        !           126: extern void task_swapout_ineligible(task_t /* task */);
        !           127: extern void swapout_ast(void);
        !           128: 
        !           129: #endif /* _KERN_TASK_SWAP_H_ */

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