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1.1.1.3 root 1: /*
1.1 root 2: * Mach Operating System
3: * Copyright (c) 1993-1988 Carnegie Mellon University
4: * All Rights Reserved.
1.1.1.3 root 5: *
1.1 root 6: * Permission to use, copy, modify and distribute this software and its
7: * documentation is hereby granted, provided that both the copyright
8: * notice and this permission notice appear in all copies of the
9: * software, derivative works or modified versions, and any portions
10: * thereof, and that both notices appear in supporting documentation.
1.1.1.3 root 11: *
1.1 root 12: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
1.1.1.3 root 15: *
1.1 root 16: * Carnegie Mellon requests users of this software to return to
1.1.1.3 root 17: *
1.1 root 18: * Software Distribution Coordinator or [email protected]
19: * School of Computer Science
20: * Carnegie Mellon University
21: * Pittsburgh PA 15213-3890
1.1.1.3 root 22: *
1.1 root 23: * any improvements or extensions that they make and grant Carnegie Mellon
24: * the rights to redistribute these changes.
25: */
26: /*
27: * File: task.h
28: * Author: Avadis Tevanian, Jr.
29: *
30: * This file contains the structure definitions for tasks.
31: *
32: */
33:
34: #ifndef _KERN_TASK_H_
35: #define _KERN_TASK_H_
36:
37: #include <mach/boolean.h>
38: #include <mach/port.h>
39: #include <mach/time_value.h>
40: #include <mach/mach_param.h>
41: #include <mach/task_info.h>
42: #include <kern/kern_types.h>
43: #include <kern/lock.h>
44: #include <kern/queue.h>
45: #include <kern/pc_sample.h>
46: #include <kern/processor.h>
47: #include <kern/syscall_emulation.h>
1.1.1.4 ! root 48: #include <vm/vm_types.h>
! 49: #include <machine/task.h>
1.1 root 50:
51: struct task {
52: /* Synchronization/destruction information */
53: decl_simple_lock_data(,lock) /* Task's lock */
54: int ref_count; /* Number of references to me */
55: boolean_t active; /* Task has not been terminated */
56:
57: /* Miscellaneous */
58: vm_map_t map; /* Address space description */
59: queue_chain_t pset_tasks; /* list of tasks assigned to pset */
60: int suspend_count; /* Internal scheduling only */
61:
62: /* Thread information */
63: queue_head_t thread_list; /* list of threads */
64: int thread_count; /* number of threads */
65: processor_set_t processor_set; /* processor set for new threads */
66: boolean_t may_assign; /* can assigned pset be changed? */
67: boolean_t assign_active; /* waiting for may_assign */
68:
69: /* User-visible scheduling information */
70: int user_stop_count; /* outstanding stops */
71: int priority; /* for new threads */
72:
73: /* Statistics */
74: time_value_t total_user_time;
75: /* total user time for dead threads */
76: time_value_t total_system_time;
77: /* total system time for dead threads */
78:
1.1.1.2 root 79: time_value_t creation_time; /* time stamp at creation */
80:
1.1 root 81: /* IPC structures */
82: decl_simple_lock_data(, itk_lock_data)
83: struct ipc_port *itk_self; /* not a right, doesn't hold ref */
84: struct ipc_port *itk_sself; /* a send right */
85: struct ipc_port *itk_exception; /* a send right */
86: struct ipc_port *itk_bootstrap; /* a send right */
87: struct ipc_port *itk_registered[TASK_PORT_REGISTER_MAX];
88: /* all send rights */
89:
90: struct ipc_space *itk_space;
91:
92: /* User space system call emulation support */
93: struct eml_dispatch *eml_dispatch;
94:
95: sample_control_t pc_sample;
96:
97: #if FAST_TAS
1.1.1.3 root 98: #define TASK_FAST_TAS_NRAS 8
1.1 root 99: vm_offset_t fast_tas_base[TASK_FAST_TAS_NRAS];
100: vm_offset_t fast_tas_end[TASK_FAST_TAS_NRAS];
101: #endif /* FAST_TAS */
102:
1.1.1.4 ! root 103: /* Hardware specific data. */
! 104: machine_task_t machine;
! 105:
! 106: /* Statistics */
! 107: natural_t faults; /* page faults counter */
! 108: natural_t zero_fills; /* zero fill pages counter */
! 109: natural_t reactivations; /* reactivated pages counter */
! 110: natural_t pageins; /* actual pageins couter */
! 111: natural_t cow_faults; /* copy-on-write faults counter */
! 112: natural_t messages_sent; /* messages sent counter */
! 113: natural_t messages_received; /* messages received counter */
1.1 root 114: };
115:
116: #define task_lock(task) simple_lock(&(task)->lock)
117: #define task_unlock(task) simple_unlock(&(task)->lock)
118:
119: #define itk_lock_init(task) simple_lock_init(&(task)->itk_lock_data)
120: #define itk_lock(task) simple_lock(&(task)->itk_lock_data)
121: #define itk_unlock(task) simple_unlock(&(task)->itk_lock_data)
122:
123: /*
124: * Exported routines/macros
125: */
126:
127: extern kern_return_t task_create(
128: task_t parent_task,
129: boolean_t inherit_memory,
130: task_t *child_task);
131: extern kern_return_t task_terminate(
132: task_t task);
133: extern kern_return_t task_suspend(
134: task_t task);
135: extern kern_return_t task_resume(
136: task_t task);
137: extern kern_return_t task_threads(
138: task_t task,
139: thread_array_t *thread_list,
140: natural_t *count);
141: extern kern_return_t task_info(
142: task_t task,
143: int flavor,
144: task_info_t task_info_out,
145: natural_t *task_info_count);
146: extern kern_return_t task_get_special_port(
147: task_t task,
148: int which,
149: struct ipc_port **portp);
150: extern kern_return_t task_set_special_port(
151: task_t task,
152: int which,
153: struct ipc_port *port);
154: extern kern_return_t task_assign(
155: task_t task,
156: processor_set_t new_pset,
157: boolean_t assign_threads);
158: extern kern_return_t task_assign_default(
159: task_t task,
160: boolean_t assign_threads);
1.1.1.4 ! root 161: extern void consider_task_collect(void);
1.1 root 162:
163: /*
164: * Internal only routines
165: */
166:
1.1.1.4 ! root 167: extern void task_init(void);
! 168: extern void task_reference(task_t);
! 169: extern void task_deallocate(task_t);
! 170: extern kern_return_t task_hold(task_t);
! 171: extern kern_return_t task_dowait(task_t, boolean_t);
! 172: extern kern_return_t task_release(task_t);
1.1 root 173:
174: extern task_t kernel_task;
175:
1.1.1.3 root 176: #endif /* _KERN_TASK_H_ */
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