osfmk/ipc/ipc_hash.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50 /*
  51  */
  52 /*
  53  *      File:   ipc/ipc_hash.h
  54  *      Author: Rich Draves
  55  *      Date:   1989
  56  *
  57  *      Declarations of entry hash table operations.
  58  */
  59
  60 #ifndef _IPC_IPC_HASH_H_
  61 #define _IPC_IPC_HASH_H_
  62
  63 #include <mach/boolean.h>
  64 #include <mach/kern_return.h>
  65 #include <mach_debug/hash_info.h>
  66
  67 /*
  68  * Exported interfaces
  69  */
  70
  71 /* Lookup (space, obj) in the appropriate reverse hash table */
  72 extern boolean_t ipc_hash_lookup(
  73         ipc_space_t             space,
  74         ipc_object_t            obj,
  75         mach_port_name_t        *namep,
  76         ipc_entry_t             *entryp);
  77
  78 /* Insert an entry into the appropriate reverse hash table */
  79 extern void ipc_hash_insert(
  80         ipc_space_t             space,
  81         ipc_object_t            obj,
  82         mach_port_name_t        name,
  83         ipc_entry_t             entry);
  84
  85 /* Delete an entry from the appropriate reverse hash table */
  86 extern void ipc_hash_delete(
  87         ipc_space_t             space,
  88         ipc_object_t            obj,
  89         mach_port_name_t        name,
  90         ipc_entry_t             entry);
  91
  92 /*
  93  *      For use by functions that know what they're doing:
  94  *      the global primitives, for splay tree entries,
  95  *      and the local primitives, for table entries.
  96  */
  97
  98 /* Delete an entry from the global reverse hash table */
  99 extern void ipc_hash_global_delete(
 100         ipc_space_t             space,
 101         ipc_object_t            obj,
 102         mach_port_name_t        name,
 103         ipc_tree_entry_t        entry);
 104
 105 /* Lookup (space, obj) in local hash table */
 106 extern boolean_t ipc_hash_local_lookup(
 107         ipc_space_t             space,
 108         ipc_object_t            obj,
 109         mach_port_name_t        *namep,
 110         ipc_entry_t             *entryp);
 111
 112 /* Inserts an entry into the local reverse hash table */
 113 extern void ipc_hash_local_insert(
 114         ipc_space_t             space,
 115         ipc_object_t            obj,
 116         mach_port_index_t       index,
 117         ipc_entry_t             entry);
 118
 119 /* Initialize the reverse hash table implementation */
 120 extern void ipc_hash_init(void);
 121
 122 #include <mach_ipc_debug.h>
 123
 124 #if     MACH_IPC_DEBUG
 125
 126 extern natural_t ipc_hash_info(
 127         hash_info_bucket_t      *info,
 128         mach_msg_type_number_t count);
 129
 130 #endif  /* MACH_IPC_DEBUG */
 131
 132 #endif  /* _IPC_IPC_HASH_H_ */