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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 | #include <proc/thread.h> |
29 | #include <proc/thread.h> |
30 | #include <proc/task.h> |
30 | #include <proc/task.h> |
31 | #include <mm/vm.h> |
31 | #include <mm/vm.h> |
- | 32 | #include <mm/heap.h> |
|
32 | 33 | ||
33 | #include <synch/spinlock.h> |
34 | #include <synch/spinlock.h> |
34 | #include <arch.h> |
35 | #include <arch.h> |
35 | #include <panic.h> |
36 | #include <panic.h> |
36 | #include <list.h> |
37 | #include <list.h> |
37 | 38 | ||
38 | spinlock_t tasks_lock; |
39 | spinlock_t tasks_lock; |
39 | link_t tasks_head; |
40 | link_t tasks_head; |
40 | 41 | ||
41 | void task_init(void) |
42 | void task_init(void) |
42 | { |
43 | { |
43 | TASK = NULL; |
44 | TASK = NULL; |
44 | spinlock_initialize(&tasks_lock); |
45 | spinlock_initialize(&tasks_lock); |
45 | list_initialize(&tasks_head); |
46 | list_initialize(&tasks_head); |
46 | } |
47 | } |
47 | 48 | ||
48 | task_t *task_create(vm_t *m) |
49 | task_t *task_create(vm_t *m) |
49 | { |
50 | { |
50 | pri_t pri; |
51 | pri_t pri; |
51 | task_t *ta; |
52 | task_t *ta; |
52 | 53 | ||
53 | ta = (task_t *) malloc(sizeof(task_t)); |
54 | ta = (task_t *) malloc(sizeof(task_t)); |
54 | if (ta) { |
55 | if (ta) { |
55 | spinlock_initialize(&ta->lock); |
56 | spinlock_initialize(&ta->lock); |
56 | list_initialize(&ta->th_head); |
57 | list_initialize(&ta->th_head); |
57 | list_initialize(&ta->tasks_link); |
58 | list_initialize(&ta->tasks_link); |
58 | ta->vm = m; |
59 | ta->vm = m; |
59 | 60 | ||
60 | pri = cpu_priority_high(); |
61 | pri = cpu_priority_high(); |
61 | spinlock_lock(&tasks_lock); |
62 | spinlock_lock(&tasks_lock); |
62 | list_append(&ta->tasks_link, &tasks_head); |
63 | list_append(&ta->tasks_link, &tasks_head); |
63 | spinlock_unlock(&tasks_lock); |
64 | spinlock_unlock(&tasks_lock); |
64 | cpu_priority_restore(pri); |
65 | cpu_priority_restore(pri); |
65 | } |
66 | } |
66 | return ta; |
67 | return ta; |
67 | } |
68 | } |
68 | 69 | ||
69 | 70 |