/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * Mach Operating System * Copyright (c) 1991,1990,1989 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* */ /* * File: ipc/ipc_port.h * Author: Rich Draves * Date: 1989 * * Implementation specific complement to mach/port.h. */ #ifndef _IPC_PORT_H_ #define _IPC_PORT_H_ #include <mach/port.h> #define MACH_PORT_NGEN(name) MACH_PORT_MAKE(0, MACH_PORT_GEN(name)) /* * Typedefs for code cleanliness. These must all have * the same (unsigned) type as mach_port_name_t. */ typedef mach_port_name_t mach_port_index_t; /* index values */ typedef mach_port_name_t mach_port_gen_t; /* generation numbers */ #define MACH_PORT_UREFS_MAX ((mach_port_urefs_t) ((1 << 16) - 1)) #define MACH_PORT_UREFS_OVERFLOW(urefs, delta) \ (((delta) > 0) && \ ((((urefs) + (delta)) <= (urefs)) || \ (((urefs) + (delta)) > MACH_PORT_UREFS_MAX))) #define MACH_PORT_UREFS_UNDERFLOW(urefs, delta) \ (((delta) < 0) && (-(delta) > (urefs))) #endif /* _IPC_PORT_H_ */