Return to memory_object.h CVS log

Up to [GnuMach] / OSKit-Mach / include / mach

Annotation of OSKit-Mach/include/mach/memory_object.h, revision 1.1.1.1

1.1       root        1: /* 
                      2:  * Mach Operating System
                      3:  * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
                      4:  * All Rights Reserved.
                      5:  * 
                      6:  * Permission to use, copy, modify and distribute this software and its
                      7:  * documentation is hereby granted, provided that both the copyright
                      8:  * notice and this permission notice appear in all copies of the
                      9:  * software, derivative works or modified versions, and any portions
                     10:  * thereof, and that both notices appear in supporting documentation.
                     11:  * 
                     12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     15:  * 
                     16:  * Carnegie Mellon requests users of this software to return to
                     17:  * 
                     18:  *  Software Distribution Coordinator  or  [email protected]
                     19:  *  School of Computer Science
                     20:  *  Carnegie Mellon University
                     21:  *  Pittsburgh PA 15213-3890
                     22:  * 
                     23:  * any improvements or extensions that they make and grant Carnegie Mellon
                     24:  * the rights to redistribute these changes.
                     25:  */
                     26: /*
                     27:  *     File:   memory_object.h
                     28:  *     Author: Michael Wayne Young
                     29:  *
                     30:  *     External memory management interface definition.
                     31:  */
                     32: 
                     33: #ifndef        _MACH_MEMORY_OBJECT_H_
                     34: #define _MACH_MEMORY_OBJECT_H_
                     35: 
                     36: /*
                     37:  *     User-visible types used in the external memory
                     38:  *     management interface:
                     39:  */
                     40: 
                     41: #include <mach/port.h>
                     42: 
                     43: typedef        mach_port_t     memory_object_t;
                     44:                                        /* Represents a memory object ... */
                     45:                                        /*  Used by user programs to specify */
                     46:                                        /*  the object to map; used by the */
                     47:                                        /*  kernel to retrieve or store data */
                     48: 
                     49: typedef        mach_port_t     memory_object_control_t;
                     50:                                        /* Provided to a memory manager; ... */
                     51:                                        /*  used to control a memory object */
                     52: 
                     53: typedef        mach_port_t     memory_object_name_t;
                     54:                                        /* Used to describe the memory ... */
                     55:                                        /*  object in vm_regions() calls */
                     56: 
                     57: typedef        int             memory_object_copy_strategy_t;
                     58:                                        /* How memory manager handles copy: */
                     59: #define                MEMORY_OBJECT_COPY_NONE         0
                     60:                                        /* ... No special support */
                     61: #define                MEMORY_OBJECT_COPY_CALL         1
                     62:                                        /* ... Make call on memory manager */
                     63: #define                MEMORY_OBJECT_COPY_DELAY        2
                     64:                                        /* ... Memory manager doesn't ... */
                     65:                                        /*     change data externally. */
                     66: #define                MEMORY_OBJECT_COPY_TEMPORARY    3
                     67:                                        /* ... Memory manager doesn't ... */
                     68:                                        /*     change data externally, and */
                     69:                                        /*     doesn't need to see changes. */
                     70: 
                     71: typedef        int             memory_object_return_t;
                     72:                                        /* Which pages to return to manager
                     73:                                           this time (lock_request) */
                     74: #define                MEMORY_OBJECT_RETURN_NONE       0
                     75:                                        /* ... don't return any. */
                     76: #define                MEMORY_OBJECT_RETURN_DIRTY      1
                     77:                                        /* ... only dirty pages. */
                     78: #define                MEMORY_OBJECT_RETURN_ALL        2
                     79:                                        /* ... dirty and precious pages. */
                     80: 
                     81: #define                MEMORY_OBJECT_NULL      MACH_PORT_NULL
                     82: 
                     83: #endif /* _MACH_MEMORY_OBJECT_H_ */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.