xnu-6153.61.1.tar.gz

[apple/xnu.git] / osfmk / kern / mach_param.h

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/*
 * Mach Operating System
 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
 * All Rights Reserved.
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/*
 */
/*
 *	File:	kern/mach_param.h
 *	Author:	Avadis Tevanian, Jr., Michael Wayne Young
 *	Date:	1986
 *
 *	Mach system sizing parameters
 *
 */

#ifdef  XNU_KERNEL_PRIVATE

#ifndef _KERN_MACH_PARAM_H_
#define _KERN_MACH_PARAM_H_

extern int thread_max, task_threadmax, task_max;


#define THREAD_CHUNK    64              /* Allocation chunk */
#define TASK_CHUNK              64              /* Allocation chunk */

#define PORT_MAX        ((task_max * 3 + thread_max)    /* kernel */ \
	                        + (thread_max * 2)      /* user */ \
	                        + 40000)                /* slop for objects */
/* Number of ports, system-wide */

#define SET_MAX         (task_max + (thread_max * 2) + 200)
/* Max number of port sets */

#define SPACE_MAX       (task_max + 5)  /* Max number of IPC spaces */

#define SEMAPHORE_MAX   (PORT_MAX >> 1) /* Maximum number of semaphores */

#endif  /* _KERN_MACH_PARAM_H_ */

#endif  /* XNU_KERNEL_PRIVATE */