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/* * Mach Operating System * Copyright (c) 1988 Carnegie-Mellon University * All rights reserved. The CMU software License Agreement specifies * the terms and conditions for use and redistribution. */ /* * File: memory_object.h * Author: Michael Wayne Young * * External memory management interface definition. */ /* * HISTORY * 20-May-91 Gregg Kellogg (gk) at NeXT * Moved to from vm to mach directories. */ #ifndef _MACH_MEMORY_OBJECT_ #define _MACH_MEMORY_OBJECT_ 1 /* * User-visible types used in the external memory * management interface: */ #import <mach/port.h> typedef port_t memory_object_t; /* Represents a memory object ... */ /* Used by user programs to specify */ /* the object to map; used by the */ /* kernel to retrieve or store data */ typedef port_t memory_object_control_t; /* Provided to a memory manager; ... */ /* used to control a memory object */ typedef port_t memory_object_name_t; /* Used to describe the memory ... */ /* object in vm_regions() calls */ typedef int memory_object_copy_strategy_t; /* How memory manager handles copy: */ #define MEMORY_OBJECT_COPY_NONE 0 /* ... No special support */ #define MEMORY_OBJECT_COPY_CALL 1 /* ... Make call on memory manager */ #define MEMORY_OBJECT_COPY_DELAY 2 /* ... Memory manager doesn't ... */ /* change data externally. */ #define MEMORY_OBJECT_NULL PORT_NULL /* Obsolete forms of the above names: */ #ifndef KERNEL typedef port_t paging_object_t; typedef port_t vm_pager_request_t; typedef port_t vm_pager_t; #define vm_pager_null ((vm_pager_t) 0) #endif #ifdef KERNEL memory_object_t memory_manager_default; #endif #endif
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