| | 1 | /* |
| | 2 | * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. Please obtain a copy of the License at |
| | 10 | * http://www.opensource.apple.com/apsl/ and read it before using this |
| | 11 | * file. |
| | 12 | * |
| | 13 | * The Original Code and all software distributed under the License are |
| | 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 18 | * Please see the License for the specific language governing rights and |
| | 19 | * limitations under the License. |
| | 20 | * |
| | 21 | * @APPLE_LICENSE_HEADER_END@ |
| | 22 | */ |
| | 23 | /* |
| | 24 | * @OSF_COPYRIGHT@ |
| | 25 | */ |
| | 26 | /* |
| | 27 | * Mach Operating System |
| | 28 | * Copyright (c) 1991,1990,1989 Carnegie Mellon University |
| | 29 | * All Rights Reserved. |
| | 30 | * |
| | 31 | * Permission to use, copy, modify and distribute this software and its |
| | 32 | * documentation is hereby granted, provided that both the copyright |
| | 33 | * notice and this permission notice appear in all copies of the |
| | 34 | * software, derivative works or modified versions, and any portions |
| | 35 | * thereof, and that both notices appear in supporting documentation. |
| | 36 | * |
| | 37 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| | 38 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
| | 39 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| | 40 | * |
| | 41 | * Carnegie Mellon requests users of this software to return to |
| | 42 | * |
| | 43 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| | 44 | * School of Computer Science |
| | 45 | * Carnegie Mellon University |
| | 46 | * Pittsburgh PA 15213-3890 |
| | 47 | * |
| | 48 | * any improvements or extensions that they make and grant Carnegie Mellon |
| | 49 | * the rights to redistribute these changes. |
| | 50 | */ |
| | 51 | /* |
| | 52 | */ |
| | 53 | /* |
| | 54 | * File: ipc/ipc_port.h |
| | 55 | * Author: Rich Draves |
| | 56 | * Date: 1989 |
| | 57 | * |
| | 58 | * Implementation specific complement to mach/port.h. |
| | 59 | */ |
| | 60 | |
| | 61 | #ifndef _IPC_PORT_H_ |
| | 62 | #define _IPC_PORT_H_ |
| | 63 | |
| | 64 | #include <mach/port.h> |
| | 65 | |
| | 66 | #define MACH_PORT_NGEN(name) MACH_PORT_MAKE(0, MACH_PORT_GEN(name)) |
| | 67 | |
| | 68 | /* |
| | 69 | * Typedefs for code cleanliness. These must all have |
| | 70 | * the same (unsigned) type as mach_port_name_t. |
| | 71 | */ |
| | 72 | |
| | 73 | |
| | 74 | #define MACH_PORT_UREFS_MAX ((mach_port_urefs_t) ((1 << 16) - 1)) |
| | 75 | |
| | 76 | #define MACH_PORT_UREFS_OVERFLOW(urefs, delta) \ |
| | 77 | (((delta) > 0) && \ |
| | 78 | ((((urefs) + (delta)) <= (urefs)) || \ |
| | 79 | (((urefs) + (delta)) > MACH_PORT_UREFS_MAX))) |
| | 80 | |
| | 81 | #define MACH_PORT_UREFS_UNDERFLOW(urefs, delta) \ |
| | 82 | (((delta) < 0) && (((mach_port_urefs_t)-(delta)) > (urefs))) |
| | 83 | |
| | 84 | #endif /* _IPC_PORT_H_ */ |
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