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/*
* Copyright (c) 2000-2004 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@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
*/
/*
* File: mach/memory_object.defs
*
* Abstract:
* Basic Mach external memory management interface declaration.
*/
subsystem
#if KERNEL_USER
KernelUser
#endif /* KERNEL_USER */
#if KERNEL_SERVER
KernelServer
#endif /* KERNEL_SERVER */
memory_object 2200;
#ifdef MACH_KERNEL
#include <advisory_pageout.h>
#endif /* MACH_KERNEL */
#include <mach/std_types.defs>
#include <mach/mach_types.defs>
#if KERNEL_SERVER
serverprefix dp_;
#endif
/*
* Initialize the specified memory object, providing
* a memory object control reference on which to make
* cache control calls.
* [To allow the mapping of this object to be used, the
* memory manager must call memory_object_set_attributes,
* specifying the "ready" parameter as TRUE. To reject
* all mappings of this object, the memory manager may
* use memory_object_destroy.]
*/
routine memory_object_init(
memory_object : memory_object_t;
memory_control : memory_object_control_t;
memory_object_page_size : memory_object_cluster_size_t);
/*
* Indicates that the specified memory object is no longer
* mapped (or cached -- see memory_object_set_attributes),
* and that further mappings will cause another memory_object_init
* call to be made.
*
* [The kernel will release its reference on the memory object
* after this call returns. The memory object control associated
* with the memory object is no longer usable - the pager should
* drop the control reference granted to it by memory_object_init.]
*/
routine memory_object_terminate(
memory_object : memory_object_t);
/*
* Request data from this memory object. At least
* the specified data should be returned with at
* least the specified access permitted.
*
* [Response should be upl commit over the specified range.]
*/
routine memory_object_data_request(
memory_object : memory_object_t;
offset : memory_object_offset_t;
length : memory_object_cluster_size_t;
desired_access : vm_prot_t);
/*
* Return data to manager. This call is used in place of data_write
* for objects initialized by object_ready instead of set_attributes.
* This call indicates whether the returned data is dirty and whether
* the kernel kept a copy. Precious data remains precious if the
* kernel keeps a copy. The indication that the kernel kept a copy
* is only a hint if the data is not precious; the cleaned copy may
* be discarded without further notifying the manager.
*
* [response should be a upl_commit over the range specified]
*/
routine memory_object_data_return(
memory_object : memory_object_t;
offset : memory_object_offset_t;
size : memory_object_cluster_size_t;
out resid_offset : memory_object_offset_t;
out io_error : int;
dirty : boolean_t;
kernel_copy : boolean_t;
upl_flags : int);
/*
* Provide initial data contents for this region of
* the memory object. If data has already been written
* to the object, this value must be discarded; otherwise,
* this call acts identically to memory_object_data_return.
*
* [response should be UPL commit over the specified range.]
*/
routine memory_object_data_initialize(
memory_object : memory_object_t;
offset : memory_object_offset_t;
size : memory_object_cluster_size_t);
/*
* Request that the specified portion of this
* memory object be unlocked to allow the specified
* forms of access; the kernel already has the data.
*
* [Response should be memory_object_lock_request when
* the operation is fully complete.]
*/
routine memory_object_data_unlock(
memory_object : memory_object_t;
offset : memory_object_offset_t;
size : memory_object_cluster_size_t;
desired_access : vm_prot_t);
/*
* Request that the specified portion of this
* memory object be synchronized with its backing
* store according to the supplied flags.
*
* [Response should be memory_object_synchronize_completed when
* the operation is fully complete.]
*/
routine memory_object_synchronize(
memory_object : memory_object_t;
offset : memory_object_offset_t;
size : memory_object_cluster_size_t;
sync_flags : vm_sync_t );
/*
* Notify the pager that the specified memory object
* has no other (mapped) references besides the named
* reference held by the pager itself.
*
* [Response should be a release of the named reference when
* the pager deems that appropriate.]
*/
routine memory_object_unmap(
memory_object : memory_object_t);