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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 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 | |
| 38 | #include <typedefs.h> |
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| 39 | #include <synch/spinlock.h> |
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| 1460 | jermar | 40 | #include <synch/mutex.h> |
| 1583 | jermar | 41 | #include <synch/futex.h> |
| 1159 | jermar | 42 | #include <adt/btree.h> |
| 788 | jermar | 43 | #include <adt/list.h> |
| 955 | palkovsky | 44 | #include <ipc/ipc.h> |
| 1174 | jermar | 45 | #include <security/cap.h> |
| 1184 | jermar | 46 | #include <arch/proc/task.h> |
| 1 | jermar | 47 | |
| 703 | jermar | 48 | /** Task structure. */ |
| 1 | jermar | 49 | struct task { |
| 1579 | jermar | 50 | /** Task lock. |
| 51 | * |
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| 52 | * Must be acquired before threads_lock and thread lock of any of its threads. |
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| 53 | */ |
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| 623 | jermar | 54 | SPINLOCK_DECLARE(lock); |
| 1579 | jermar | 55 | |
| 1062 | jermar | 56 | char *name; |
| 1585 | jermar | 57 | thread_t *main_thread; /**< Pointer to the main thread. */ |
| 410 | jermar | 58 | link_t th_head; /**< List of threads contained in this task. */ |
| 703 | jermar | 59 | as_t *as; /**< Address space. */ |
| 1159 | jermar | 60 | task_id_t taskid; /**< Unique identity of task */ |
| 1820 | decky | 61 | context_id_t context; /**< Task security context */ |
| 1005 | palkovsky | 62 | |
| 1579 | jermar | 63 | /** If this is true, new threads can become part of the task. */ |
| 64 | bool accept_new_threads; |
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| 65 | |||
| 66 | count_t refcount; /**< Number of references (i.e. threads). */ |
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| 67 | |||
| 1174 | jermar | 68 | cap_t capabilities; /**< Task capabilities. */ |
| 69 | |||
| 998 | palkovsky | 70 | /* IPC stuff */ |
| 955 | palkovsky | 71 | answerbox_t answerbox; /**< Communication endpoint */ |
| 72 | phone_t phones[IPC_MAX_PHONES]; |
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| 1568 | palkovsky | 73 | atomic_t active_calls; /**< Active asynchronous messages. |
| 74 | * It is used for limiting uspace to |
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| 75 | * certain extent. */ |
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| 1184 | jermar | 76 | |
| 1187 | jermar | 77 | task_arch_t arch; /**< Architecture specific task data. */ |
| 1460 | jermar | 78 | |
| 79 | /** |
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| 1468 | jermar | 80 | * Serializes access to the B+tree of task's futexes. This mutex is |
| 81 | * independent on the task spinlock. |
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| 82 | */ |
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| 1460 | jermar | 83 | mutex_t futexes_lock; |
| 84 | btree_t futexes; /**< B+tree of futexes referenced by this task. */ |
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| 1 | jermar | 85 | }; |
| 86 | |||
| 87 | extern spinlock_t tasks_lock; |
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| 1159 | jermar | 88 | extern btree_t tasks_btree; |
| 1 | jermar | 89 | |
| 90 | extern void task_init(void); |
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| 1062 | jermar | 91 | extern task_t *task_create(as_t *as, char *name); |
| 1579 | jermar | 92 | extern void task_destroy(task_t *t); |
| 1062 | jermar | 93 | extern task_t *task_run_program(void *program_addr, char *name); |
| 1178 | jermar | 94 | extern task_t *task_find_by_id(task_id_t id); |
| 1579 | jermar | 95 | extern int task_kill(task_id_t id); |
| 1 | jermar | 96 | |
| 1579 | jermar | 97 | |
| 1185 | jermar | 98 | #ifndef task_create_arch |
| 99 | extern void task_create_arch(task_t *t); |
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| 100 | #endif |
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| 101 | |||
| 1587 | jermar | 102 | #ifndef task_destroy_arch |
| 103 | extern void task_destroy_arch(task_t *t); |
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| 104 | #endif |
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| 105 | |||
| 1780 | jermar | 106 | extern unative_t sys_task_get_id(task_id_t *uspace_task_id); |
| 1176 | jermar | 107 | |
| 1 | jermar | 108 | #endif |
| 1702 | cejka | 109 | |
| 1888 | jermar | 110 | /** @} |
| 1702 | cejka | 111 | */ |