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| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2001-2004 Jakub Jermar |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
| 14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup genericproc |
29 | /** @addtogroup genericproc |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | #ifndef KERN_TASK_H_ |
35 | #ifndef KERN_TASK_H_ |
| 36 | #define KERN_TASK_H_ |
36 | #define KERN_TASK_H_ |
| 37 | 37 | ||
| 38 | #include <cpu.h> |
38 | #include <cpu.h> |
| 39 | #include <ipc/ipc.h> |
39 | #include <ipc/ipc.h> |
| 40 | #include <synch/spinlock.h> |
40 | #include <synch/spinlock.h> |
| 41 | #include <synch/mutex.h> |
41 | #include <synch/mutex.h> |
| 42 | #include <synch/rwlock.h> |
42 | #include <synch/rwlock.h> |
| 43 | #include <synch/futex.h> |
43 | #include <synch/futex.h> |
| 44 | #include <adt/btree.h> |
44 | #include <adt/btree.h> |
| 45 | #include <adt/list.h> |
45 | #include <adt/list.h> |
| 46 | #include <security/cap.h> |
46 | #include <security/cap.h> |
| 47 | #include <arch/proc/task.h> |
47 | #include <arch/proc/task.h> |
| 48 | #include <arch/proc/thread.h> |
48 | #include <arch/proc/thread.h> |
| 49 | #include <arch/context.h> |
49 | #include <arch/context.h> |
| 50 | #include <arch/fpu_context.h> |
50 | #include <arch/fpu_context.h> |
| 51 | #include <arch/cpu.h> |
51 | #include <arch/cpu.h> |
| 52 | #include <mm/tlb.h> |
52 | #include <mm/tlb.h> |
| 53 | #include <proc/scheduler.h> |
53 | #include <proc/scheduler.h> |
| 54 | 54 | ||
| 55 | struct thread; |
55 | struct thread; |
| 56 | 56 | ||
| 57 | /** Task structure. */ |
57 | /** Task structure. */ |
| 58 | typedef struct task { |
58 | typedef struct task { |
| 59 | /** Task lock. |
59 | /** Task lock. |
| 60 | * |
60 | * |
| 61 | * Must be acquired before threads_lock and thread lock of any of its threads. |
61 | * Must be acquired before threads_lock and thread lock of any of its |
| - | 62 | * threads. |
|
| 62 | */ |
63 | */ |
| 63 | SPINLOCK_DECLARE(lock); |
64 | SPINLOCK_DECLARE(lock); |
| 64 | 65 | ||
| 65 | char *name; |
66 | char *name; |
| 66 | struct thread *main_thread; /**< Pointer to the main thread. */ |
67 | /** Pointer to the main thread. */ |
| - | 68 | struct thread *main_thread; |
|
| 67 | link_t th_head; /**< List of threads contained in this task. */ |
69 | /** List of threads contained in this task. */ |
| - | 70 | link_t th_head; |
|
| 68 | as_t *as; /**< Address space. */ |
71 | /** Address space. */ |
| - | 72 | as_t *as; |
|
| 69 | task_id_t taskid; /**< Unique identity of task */ |
73 | /** Unique identity of task. */ |
| - | 74 | task_id_t taskid; |
|
| 70 | context_id_t context; /**< Task security context */ |
75 | /** Task security context. */ |
| - | 76 | context_id_t context; |
|
| 71 | 77 | ||
| 72 | /** If this is true, new threads can become part of the task. */ |
78 | /** If this is true, new threads can become part of the task. */ |
| 73 | bool accept_new_threads; |
79 | bool accept_new_threads; |
| - | 80 | /** Number of references (i.e. threads). */ |
|
| - | 81 | count_t refcount; |
|
| 74 | 82 | ||
| 75 | count_t refcount; /**< Number of references (i.e. threads). */ |
83 | /** Task capabilities. */ |
| 76 | - | ||
| 77 | cap_t capabilities; /**< Task capabilities. */ |
84 | cap_t capabilities; |
| 78 | 85 | ||
| 79 | /* IPC stuff */ |
86 | /* IPC stuff */ |
| 80 | answerbox_t answerbox; /**< Communication endpoint */ |
87 | answerbox_t answerbox; /**< Communication endpoint */ |
| 81 | phone_t phones[IPC_MAX_PHONES]; |
88 | phone_t phones[IPC_MAX_PHONES]; |
| 82 | atomic_t active_calls; /**< Active asynchronous messages. |
- | |
| - | 89 | /** |
|
| 83 | * It is used for limiting uspace to |
90 | * Active asynchronous messages. It is used for limiting uspace to |
| 84 | * certain extent. */ |
91 | * certain extent. |
| - | 92 | */ |
|
| - | 93 | atomic_t active_calls; |
|
| 85 | 94 | ||
| 86 | task_arch_t arch; /**< Architecture specific task data. */ |
95 | /** Architecture specific task data. */ |
| - | 96 | task_arch_t arch; |
|
| 87 | 97 | ||
| 88 | /** |
98 | /** |
| 89 | * Serializes access to the B+tree of task's futexes. This mutex is |
99 | * Serializes access to the B+tree of task's futexes. This mutex is |
| 90 | * independent on the task spinlock. |
100 | * independent on the task spinlock. |
| 91 | */ |
101 | */ |
| 92 | mutex_t futexes_lock; |
102 | mutex_t futexes_lock; |
| 93 | btree_t futexes; /**< B+tree of futexes referenced by this task. */ |
103 | /** B+tree of futexes referenced by this task. */ |
| - | 104 | btree_t futexes; |
|
| 94 | 105 | ||
| 95 | uint64_t cycles; /**< Accumulated accounting. */ |
106 | /** Accumulated accounting. */ |
| - | 107 | uint64_t cycles; |
|
| 96 | } task_t; |
108 | } task_t; |
| 97 | 109 | ||
| 98 | SPINLOCK_EXTERN(tasks_lock); |
110 | SPINLOCK_EXTERN(tasks_lock); |
| 99 | extern btree_t tasks_btree; |
111 | extern btree_t tasks_btree; |
| 100 | 112 | ||
| 101 | extern void task_init(void); |
113 | extern void task_init(void); |
| 102 | extern task_t *task_create(as_t *as, char *name); |
114 | extern task_t *task_create(as_t *as, char *name); |
| 103 | extern void task_destroy(task_t *t); |
115 | extern void task_destroy(task_t *t); |
| 104 | extern task_t *task_run_program(void *program_addr, char *name); |
116 | extern task_t *task_run_program(void *program_addr, char *name); |
| 105 | extern task_t *task_find_by_id(task_id_t id); |
117 | extern task_t *task_find_by_id(task_id_t id); |
| 106 | extern int task_kill(task_id_t id); |
118 | extern int task_kill(task_id_t id); |
| 107 | extern uint64_t task_get_accounting(task_t *t); |
119 | extern uint64_t task_get_accounting(task_t *t); |
| 108 | 120 | ||
| 109 | extern void cap_set(task_t *t, cap_t caps); |
121 | extern void cap_set(task_t *t, cap_t caps); |
| 110 | extern cap_t cap_get(task_t *t); |
122 | extern cap_t cap_get(task_t *t); |
| 111 | 123 | ||
| 112 | 124 | ||
| 113 | #ifndef task_create_arch |
125 | #ifndef task_create_arch |
| 114 | extern void task_create_arch(task_t *t); |
126 | extern void task_create_arch(task_t *t); |
| 115 | #endif |
127 | #endif |
| 116 | 128 | ||
| 117 | #ifndef task_destroy_arch |
129 | #ifndef task_destroy_arch |
| 118 | extern void task_destroy_arch(task_t *t); |
130 | extern void task_destroy_arch(task_t *t); |
| 119 | #endif |
131 | #endif |
| 120 | 132 | ||
| 121 | extern unative_t sys_task_get_id(task_id_t *uspace_task_id); |
133 | extern unative_t sys_task_get_id(task_id_t *uspace_task_id); |
| 122 | 134 | ||
| 123 | #endif |
135 | #endif |
| 124 | 136 | ||
| 125 | /** @} |
137 | /** @} |
| 126 | */ |
138 | */ |
| 127 | 139 | ||