task_swap.c   [plain text]


/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
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 * 
 * 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 
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 * 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.
 *
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 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
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/*
 * @OSF_COPYRIGHT@
 */
/*      
 *	        File:	kern/task_swap.c
 *      
 *	Task residency management primitives implementation.
 */
#include <mach_assert.h>
#include <task_swapper.h>

#include <kern/spl.h>
#include <kern/lock.h>
#include <kern/queue.h>
#include <kern/host.h>
#include <kern/task.h>
#include <kern/task_swap.h>
#include <kern/thread.h>
#include <kern/host_statistics.h>
#include <kern/misc_protos.h>
#include <kern/assert.h>
#include <mach/policy.h>

#include <ipc/ipc_port.h>	/* We use something from in here */

/*
 *	task_swappable:	[exported]
 *
 *	Make a task swappable or non-swappable. If made non-swappable,
 *	it will be swapped in.
 */
kern_return_t
task_swappable(
	host_priv_t host_priv,
	task_t task,
	__unused boolean_t make_swappable)
{
	if (host_priv == HOST_PRIV_NULL)
		return (KERN_INVALID_ARGUMENT);

	if (task == TASK_NULL)
		return (KERN_INVALID_ARGUMENT);

	/*
	 * We don't support swapping, this call is purely advisory.
	 */
	return (KERN_SUCCESS);
}