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Annotation of XNU/osfmk/ipc/ipc_splay.h, revision 1.1

1.1     ! root        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  [email protected]
        !            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_splay.h
        !            54:  *     Author: Rich Draves
        !            55:  *     Date:   1989
        !            56:  *
        !            57:  *     Declarations of primitive splay tree operations.
        !            58:  */
        !            59: 
        !            60: #ifndef        _IPC_IPC_SPLAY_H_
        !            61: #define _IPC_IPC_SPLAY_H_
        !            62: 
        !            63: #include <mach/port.h>
        !            64: #include <kern/assert.h>
        !            65: #include <kern/macro_help.h>
        !            66: #include <ipc/ipc_entry.h>
        !            67: 
        !            68: typedef struct ipc_splay_tree {
        !            69:        mach_port_name_t ist_name;      /* name used in last lookup */
        !            70:        ipc_tree_entry_t ist_root;      /* root of middle tree */
        !            71:        ipc_tree_entry_t ist_ltree;     /* root of left tree */
        !            72:        ipc_tree_entry_t *ist_ltreep;   /* pointer into left tree */
        !            73:        ipc_tree_entry_t ist_rtree;     /* root of right tree */
        !            74:        ipc_tree_entry_t *ist_rtreep;   /* pointer into right tree */
        !            75: } *ipc_splay_tree_t;
        !            76: 
        !            77: #define        ist_lock(splay)         /* no locking */
        !            78: #define ist_unlock(splay)      /* no locking */
        !            79: 
        !            80: /* Initialize a raw splay tree */
        !            81: extern void ipc_splay_tree_init(
        !            82:        ipc_splay_tree_t        splay);
        !            83: 
        !            84: /* Pick a random entry in a splay tree */
        !            85: extern boolean_t ipc_splay_tree_pick(
        !            86:        ipc_splay_tree_t        splay,
        !            87:        mach_port_name_t        *namep,
        !            88:        ipc_tree_entry_t        *entryp);
        !            89: 
        !            90: /* Find an entry in a splay tree */
        !            91: extern ipc_tree_entry_t ipc_splay_tree_lookup(
        !            92:        ipc_splay_tree_t        splay,
        !            93:        mach_port_name_t        name);
        !            94: 
        !            95: /* Insert a new entry into a splay tree */
        !            96: extern void ipc_splay_tree_insert(
        !            97:        ipc_splay_tree_t        splay,
        !            98:        mach_port_name_t        name,
        !            99:        ipc_tree_entry_t        entry);
        !           100: 
        !           101: /* Delete an entry from a splay tree */
        !           102: extern void ipc_splay_tree_delete(
        !           103:        ipc_splay_tree_t        splay,
        !           104:        mach_port_name_t        name,
        !           105:        ipc_tree_entry_t        entry);
        !           106: 
        !           107: /* Split a splay tree */
        !           108: extern void ipc_splay_tree_split(
        !           109:        ipc_splay_tree_t        splay,
        !           110:        mach_port_name_t        name,
        !           111:        ipc_splay_tree_t        entry);
        !           112: 
        !           113: /* Join two splay trees */
        !           114: extern void ipc_splay_tree_join(
        !           115:        ipc_splay_tree_t        splay,
        !           116:        ipc_splay_tree_t        small);
        !           117: 
        !           118: /* Do a bounded splay tree lookup */
        !           119: extern void ipc_splay_tree_bounds(
        !           120:        ipc_splay_tree_t        splay,
        !           121:        mach_port_name_t        name,
        !           122:        mach_port_name_t        *lowerp, 
        !           123:        mach_port_name_t        *upperp);
        !           124: 
        !           125: /* Initialize a symmetric order traversal of a splay tree */
        !           126: extern ipc_tree_entry_t ipc_splay_traverse_start(
        !           127:        ipc_splay_tree_t        splay);
        !           128: 
        !           129: /* Return the next entry in a symmetric order traversal of a splay tree */
        !           130: extern ipc_tree_entry_t ipc_splay_traverse_next(
        !           131:        ipc_splay_tree_t        splay,
        !           132:        boolean_t               delete);
        !           133: 
        !           134: /* Terminate a symmetric order traversal of a splay tree */
        !           135: extern void ipc_splay_traverse_finish(
        !           136:        ipc_splay_tree_t        splay);
        !           137: 
        !           138: #endif /* _IPC_IPC_SPLAY_H_ */

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