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2090 | decky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1820 | decky | 29 | /** @addtogroup genericproc |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
1888 | jermar | 35 | #ifndef KERN_TASK_H_ |
36 | #define KERN_TASK_H_ |
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1 | jermar | 37 | |
2092 | decky | 38 | #include <cpu.h> |
2105 | decky | 39 | #include <ipc/ipc.h> |
1 | jermar | 40 | #include <synch/spinlock.h> |
1460 | jermar | 41 | #include <synch/mutex.h> |
2089 | decky | 42 | #include <synch/rwlock.h> |
1583 | jermar | 43 | #include <synch/futex.h> |
1159 | jermar | 44 | #include <adt/btree.h> |
788 | jermar | 45 | #include <adt/list.h> |
1174 | jermar | 46 | #include <security/cap.h> |
1184 | jermar | 47 | #include <arch/proc/task.h> |
2089 | decky | 48 | #include <arch/proc/thread.h> |
49 | #include <arch/context.h> |
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50 | #include <arch/fpu_context.h> |
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51 | #include <arch/cpu.h> |
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52 | #include <mm/tlb.h> |
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53 | #include <proc/scheduler.h> |
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1 | jermar | 54 | |
2089 | decky | 55 | struct thread; |
56 | |||
703 | jermar | 57 | /** Task structure. */ |
2089 | decky | 58 | typedef struct task { |
1579 | jermar | 59 | /** Task lock. |
60 | * |
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2106 | jermar | 61 | * Must be acquired before threads_lock and thread lock of any of its |
62 | * threads. |
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1579 | jermar | 63 | */ |
623 | jermar | 64 | SPINLOCK_DECLARE(lock); |
1579 | jermar | 65 | |
1062 | jermar | 66 | char *name; |
2106 | jermar | 67 | /** Pointer to the main thread. */ |
68 | struct thread *main_thread; |
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69 | /** List of threads contained in this task. */ |
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70 | link_t th_head; |
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71 | /** Address space. */ |
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72 | as_t *as; |
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73 | /** Unique identity of task. */ |
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74 | task_id_t taskid; |
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75 | /** Task security context. */ |
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76 | context_id_t context; |
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1005 | palkovsky | 77 | |
1579 | jermar | 78 | /** If this is true, new threads can become part of the task. */ |
79 | bool accept_new_threads; |
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2106 | jermar | 80 | /** Number of references (i.e. threads). */ |
81 | count_t refcount; |
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1579 | jermar | 82 | |
2106 | jermar | 83 | /** Task capabilities. */ |
84 | cap_t capabilities; |
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1579 | jermar | 85 | |
998 | palkovsky | 86 | /* IPC stuff */ |
955 | palkovsky | 87 | answerbox_t answerbox; /**< Communication endpoint */ |
88 | phone_t phones[IPC_MAX_PHONES]; |
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2106 | jermar | 89 | /** |
90 | * Active asynchronous messages. It is used for limiting uspace to |
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91 | * certain extent. |
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92 | */ |
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93 | atomic_t active_calls; |
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1184 | jermar | 94 | |
2106 | jermar | 95 | /** Architecture specific task data. */ |
96 | task_arch_t arch; |
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1460 | jermar | 97 | |
98 | /** |
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1468 | jermar | 99 | * Serializes access to the B+tree of task's futexes. This mutex is |
100 | * independent on the task spinlock. |
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101 | */ |
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1460 | jermar | 102 | mutex_t futexes_lock; |
2106 | jermar | 103 | /** B+tree of futexes referenced by this task. */ |
104 | btree_t futexes; |
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2039 | decky | 105 | |
2106 | jermar | 106 | /** Accumulated accounting. */ |
107 | uint64_t cycles; |
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2089 | decky | 108 | } task_t; |
1 | jermar | 109 | |
2093 | decky | 110 | SPINLOCK_EXTERN(tasks_lock); |
1159 | jermar | 111 | extern btree_t tasks_btree; |
1 | jermar | 112 | |
113 | extern void task_init(void); |
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1062 | jermar | 114 | extern task_t *task_create(as_t *as, char *name); |
1579 | jermar | 115 | extern void task_destroy(task_t *t); |
1062 | jermar | 116 | extern task_t *task_run_program(void *program_addr, char *name); |
1178 | jermar | 117 | extern task_t *task_find_by_id(task_id_t id); |
1579 | jermar | 118 | extern int task_kill(task_id_t id); |
2039 | decky | 119 | extern uint64_t task_get_accounting(task_t *t); |
1 | jermar | 120 | |
2089 | decky | 121 | extern void cap_set(task_t *t, cap_t caps); |
122 | extern cap_t cap_get(task_t *t); |
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1579 | jermar | 123 | |
2089 | decky | 124 | |
1185 | jermar | 125 | #ifndef task_create_arch |
126 | extern void task_create_arch(task_t *t); |
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127 | #endif |
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128 | |||
1587 | jermar | 129 | #ifndef task_destroy_arch |
130 | extern void task_destroy_arch(task_t *t); |
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131 | #endif |
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132 | |||
1780 | jermar | 133 | extern unative_t sys_task_get_id(task_id_t *uspace_task_id); |
1176 | jermar | 134 | |
1 | jermar | 135 | #endif |
1702 | cejka | 136 | |
1888 | jermar | 137 | /** @} |
1702 | cejka | 138 | */ |