1  /*
 2   * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 3   *
 4   * @APPLE_OSREFERENCE_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. The rights granted to you under the License
10   * may not be used to create, or enable the creation or redistribution of,
11   * unlawful or unlicensed copies of an Apple operating system, or to
12   * circumvent, violate, or enable the circumvention or violation of, any
13   * terms of an Apple operating system software license agreement.
14   *
15   * Please obtain a copy of the License at
16   * http://www.opensource.apple.com/apsl/ and read it before using this file.
17   *
18   * The Original Code and all software distributed under the License are
19   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23   * Please see the License for the specific language governing rights and
24   * limitations under the License.
25   *
26   * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27   */
28  /*
29   * @OSF_COPYRIGHT@
30   */
31  /*
32   * Mach Operating System
33   * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
34   * All Rights Reserved.
35   *
36   * Permission to use, copy, modify and distribute this software and its
37   * documentation is hereby granted, provided that both the copyright
38   * notice and this permission notice appear in all copies of the
39   * software, derivative works or modified versions, and any portions
40   * thereof, and that both notices appear in supporting documentation.
41   *
42   * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
43   * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
44   * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
45   *
46   * Carnegie Mellon requests users of this software to return to
47   *
48   *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
49   *  School of Computer Science
50   *  Carnegie Mellon University
51   *  Pittsburgh PA 15213-3890
52   *
53   * any improvements or extensions that they make and grant Carnegie Mellon
54   * the rights to redistribute these changes.
55   */
56  /*
57   */
58  /*
59   *	File:	kern/mach_param.h
60   *	Author:	Avadis Tevanian, Jr., Michael Wayne Young
61   *	Date:	1986
62   *
63   *	Mach system sizing parameters
64   *
65   */
66  
67  #ifdef  XNU_KERNEL_PRIVATE
68  
69  #ifndef _KERN_MACH_PARAM_H_
70  #define _KERN_MACH_PARAM_H_
71  
72  extern int thread_max, task_threadmax, task_max;
73  
74  
75  #define THREAD_CHUNK    64              /* Allocation chunk */
76  #define TASK_CHUNK              64              /* Allocation chunk */
77  
78  #define PORT_MAX        ((task_max * 3 + thread_max)    /* kernel */ \
79  	                        + (thread_max * 2)      /* user */ \
80  	                        + 40000)                /* slop for objects */
81  /* Number of ports, system-wide */
82  
83  #define SET_MAX         (task_max + (thread_max * 2) + 200)
84  /* Max number of port sets */
85  
86  #define SPACE_MAX       (task_max + 5)  /* Max number of IPC spaces */
87  
88  #define SEMAPHORE_MAX   (PORT_MAX >> 1) /* Maximum number of semaphores */
89  
90  #endif  /* _KERN_MACH_PARAM_H_ */
91  
92  #endif  /* XNU_KERNEL_PRIVATE */