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| Rev | Author | Line No. | Line |
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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 | |||
| 29 | #include <proc/thread.h> |
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| 30 | #include <proc/task.h> |
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| 703 | jermar | 31 | #include <mm/as.h> |
| 35 | jermar | 32 | #include <mm/heap.h> |
| 1 | jermar | 33 | |
| 34 | #include <synch/spinlock.h> |
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| 35 | #include <arch.h> |
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| 36 | #include <panic.h> |
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| 788 | jermar | 37 | #include <adt/list.h> |
| 1 | jermar | 38 | |
| 623 | jermar | 39 | SPINLOCK_INITIALIZE(tasks_lock); |
| 624 | jermar | 40 | LIST_INITIALIZE(tasks_head); |
| 1 | jermar | 41 | |
| 107 | decky | 42 | /** Initialize tasks |
| 43 | * |
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| 44 | * Initialize kernel tasks support. |
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| 45 | * |
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| 46 | */ |
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| 1 | jermar | 47 | void task_init(void) |
| 48 | { |
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| 15 | jermar | 49 | TASK = NULL; |
| 1 | jermar | 50 | } |
| 51 | |||
| 107 | decky | 52 | |
| 53 | /** Create new task |
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| 54 | * |
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| 55 | * Create new task with no threads. |
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| 56 | * |
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| 703 | jermar | 57 | * @param as Task's address space. |
| 107 | decky | 58 | * |
| 59 | * @return New task's structure on success, NULL on failure. |
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| 60 | * |
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| 61 | */ |
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| 703 | jermar | 62 | task_t *task_create(as_t *as) |
| 1 | jermar | 63 | { |
| 413 | jermar | 64 | ipl_t ipl; |
| 1 | jermar | 65 | task_t *ta; |
| 66 | |||
| 67 | ta = (task_t *) malloc(sizeof(task_t)); |
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| 68 | if (ta) { |
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| 552 | palkovsky | 69 | spinlock_initialize(&ta->lock, "task_ta_lock"); |
| 1 | jermar | 70 | list_initialize(&ta->th_head); |
| 71 | list_initialize(&ta->tasks_link); |
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| 703 | jermar | 72 | ta->as = as; |
| 1 | jermar | 73 | |
| 413 | jermar | 74 | ipl = interrupts_disable(); |
| 1 | jermar | 75 | spinlock_lock(&tasks_lock); |
| 76 | list_append(&ta->tasks_link, &tasks_head); |
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| 77 | spinlock_unlock(&tasks_lock); |
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| 413 | jermar | 78 | interrupts_restore(ipl); |
| 1 | jermar | 79 | } |
| 80 | return ta; |
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| 81 | } |
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| 82 |