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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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| 31 | #include <mm/vm.h> |
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| 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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| 37 | #include <list.h> |
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| 38 | |||
| 39 | spinlock_t tasks_lock; |
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| 40 | link_t tasks_head; |
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| 41 | |||
| 107 | decky | 42 | |
| 43 | /** Initialize tasks |
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| 44 | * |
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| 45 | * Initialize kernel tasks support. |
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| 46 | * |
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| 47 | */ |
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| 1 | jermar | 48 | void task_init(void) |
| 49 | { |
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| 15 | jermar | 50 | TASK = NULL; |
| 1 | jermar | 51 | spinlock_initialize(&tasks_lock); |
| 52 | list_initialize(&tasks_head); |
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| 53 | } |
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| 54 | |||
| 107 | decky | 55 | |
| 56 | /** Create new task |
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| 57 | * |
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| 58 | * Create new task with no threads. |
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| 59 | * |
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| 60 | * @param m Task's virtual memory structure. |
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| 61 | * |
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| 62 | * @return New task's structure on success, NULL on failure. |
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| 63 | * |
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| 64 | */ |
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| 1 | jermar | 65 | task_t *task_create(vm_t *m) |
| 66 | { |
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| 67 | pri_t pri; |
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| 68 | task_t *ta; |
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| 69 | |||
| 70 | ta = (task_t *) malloc(sizeof(task_t)); |
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| 71 | if (ta) { |
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| 72 | spinlock_initialize(&ta->lock); |
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| 73 | list_initialize(&ta->th_head); |
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| 74 | list_initialize(&ta->tasks_link); |
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| 75 | ta->vm = m; |
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| 76 | |||
| 77 | pri = cpu_priority_high(); |
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| 78 | spinlock_lock(&tasks_lock); |
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| 79 | list_append(&ta->tasks_link, &tasks_head); |
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| 80 | spinlock_unlock(&tasks_lock); |
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| 81 | cpu_priority_restore(pri); |
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| 82 | } |
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| 83 | return ta; |
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| 84 | } |
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| 85 |