1/*
2 * Copyright (c) 2000-2004 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 * File: kern/task_swap.c
33 *
34 * Task residency management primitives implementation.
35 */
36#include <mach_assert.h>
37#include <task_swapper.h>
38
39#include <kern/spl.h>
40#include <kern/queue.h>
41#include <kern/host.h>
42#include <kern/task.h>
43#include <kern/task_swap.h>
44#include <kern/thread.h>
45#include <kern/host_statistics.h>
46#include <kern/misc_protos.h>
47#include <kern/assert.h>
48#include <mach/policy.h>
49
50#include <ipc/ipc_port.h> /* We use something from in here */
51
52/*
53 * task_swappable: [exported]
54 *
55 * Make a task swappable or non-swappable. If made non-swappable,
56 * it will be swapped in.
57 */
58kern_return_t
59task_swappable(
60 host_priv_t host_priv,
61 task_t task,
62 __unused boolean_t make_swappable)
63{
64 if (host_priv == HOST_PRIV_NULL)
65 return (KERN_INVALID_ARGUMENT);
66
67 if (task == TASK_NULL)
68 return (KERN_INVALID_ARGUMENT);
69
70 /*
71 * We don't support swapping, this call is purely advisory.
72 */
73 return (KERN_SUCCESS);
74}
75