/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * HISTORY * * Revision 1.1.1.1 1998/09/22 21:05:32 wsanchez * Import of Mac OS X kernel (~semeria) * * Revision 1.1.1.1 1998/03/07 02:25:56 wsanchez * Import of OSF Mach kernel (~mburg) * * Revision 1.1.4.1 1995/04/07 19:02:38 barbou * Merged into mainline. * [95/03/09 barbou] * * Revision 1.1.2.2 1995/02/13 15:35:45 barbou * Merged/ported to MK6. * * Revision 1.1.1.3 94/08/12 15:44:39 barbou * VM Merge - Task Swapper. * * Changed host_priv_t into host_t. * [94/07/28 barbou] * * Revision 1.1.1.2 1994/07/28 15:33:46 barbou * Copied from IK. * * Revision 3.0.3.2 1994/01/20 19:53:01 chasb * Remove excessively restrictive copyright notice * [1994/01/20 17:50:40 chasb] * * Revision 3.0.3.1 1993/12/20 21:06:49 gupta * Expanded C O P Y R I G H T * [1993/12/17 22:19:22 gupta] * * Revision 3.0 1992/12/31 22:08:24 ede * Initial revision for OSF/1 R1.3 * * Revision 1.1.4.5 1992/03/16 18:02:52 gmf * Add TASK_SW_ELIGIBLE flag to swap_flags; prototype * task_swapout_eligible, task_swapout_ineligible. * [1992/02/12 22:01:48 gmf] * * Revision 1.1.4.4 1992/01/22 22:14:13 gmf * Change prototype for task_swappable() to use host_priv_t * instead of host_t. * [1992/01/17 17:48:13 gmf] * * Revision 1.1.4.3 1991/12/10 17:20:55 gmf * Add extern declaration for new thread. * Changed TASK_SW_WAIT flag to TASK_SW_WANT_IN. * [1991/12/10 16:19:10 gmf] * * Revision 1.1.4.2 1991/11/21 21:48:35 mmp * initial task swapping code * [1991/11/21 21:01:37 mmp] * * $EndLog$ */ /* * File: kern/task_swap.h * * Task residency management primitives declarations. */ #ifndef _KERN_TASK_SWAP_H_ #define _KERN_TASK_SWAP_H_ #include <kern/host.h> /* * swap states */ #define TASK_SW_UNSWAPPABLE 1 /* not swappable */ #define TASK_SW_IN 2 /* swapped in (resident) */ #define TASK_SW_OUT 3 /* swapped out (non-resident) */ #define TASK_SW_COMING_IN 4 /* about to be swapped in */ #define TASK_SW_GOING_OUT 5 /* being swapped out */ /* * swap flags */ #define TASK_SW_MAKE_UNSWAPPABLE 0x01 /* make it unswappable */ #define TASK_SW_WANT_IN 0x02 /* sleeping on state */ #define TASK_SW_ELIGIBLE 0x04 /* eligible for swapping */ /* * exported routines */ extern void task_swapper_init(void); extern kern_return_t task_swapin( task_t, /* task */ boolean_t); /* make_unswappable */ extern kern_return_t task_swapout(task_t /* task */); extern void task_swapper(void); extern void task_swap_swapout_thread(void); extern void compute_vm_averages(void); extern kern_return_t task_swappable( host_priv_t, /* host */ task_t, /* task */ boolean_t); /* swappable */ extern void task_swapout_eligible(task_t /* task */); extern void task_swapout_ineligible(task_t /* task */); extern void swapout_ast(void); #endif /* _KERN_TASK_SWAP_H_ */