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