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53 * File: kern/mach_param.h
54 * Author: Avadis Tevanian, Jr., Michael Wayne Young
57 * Mach system sizing parameters
61 #ifndef _KERN_MACH_PARAM_H_
62 #define _KERN_MACH_PARAM_H_
64 #include <sys/appleapiopts.h>
66 #ifdef __APPLE_API_PRIVATE
67 #ifdef __APPLE_API_EVOLVING
69 #define THREAD_MAX 1024 /* Max number of threads */
70 #define THREAD_CHUNK 64 /* Allocation chunk */
72 #define TASK_MAX 1024 /* Max number of tasks */
73 #define TASK_CHUNK 64 /* Allocation chunk */
75 #define ACT_MAX 1024 /* Max number of acts */
76 #define ACT_CHUNK 64 /* Allocation chunk */
78 #define THREAD_POOL_MAX 1024 /* Max number of thread_pools */
79 #define THREAD_POOL_CHUNK 64 /* Allocation chunk */
81 #define PORT_MAX ((TASK_MAX * 3 + THREAD_MAX) /* kernel */ \
82 + (THREAD_MAX * 2) /* user */ \
83 + 40000) /* slop for objects */
84 /* Number of ports, system-wide */
86 #define SET_MAX (TASK_MAX + THREAD_MAX + 200)
87 /* Max number of port sets */
89 #define ITE_MAX (1 << 16) /* Max number of splay tree entries */
91 #define SPACE_MAX (TASK_MAX + 5) /* Max number of IPC spaces */
93 #define SEMAPHORE_MAX (PORT_MAX >> 1) /* Maximum number of semaphores */
95 #endif /* __APPLE_API_EVOLVING */
96 #endif /* __APPLE_API_PRIVATE */
98 #endif /* _KERN_MACH_PARAM_H_ */