Rev 822 | Rev 965 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | #include <proc/thread.h> |
||
| 30 | #include <proc/task.h> |
||
| 703 | jermar | 31 | #include <mm/as.h> |
| 814 | palkovsky | 32 | #include <mm/slab.h> |
| 1 | jermar | 33 | |
| 34 | #include <synch/spinlock.h> |
||
| 35 | #include <arch.h> |
||
| 36 | #include <panic.h> |
||
| 788 | jermar | 37 | #include <adt/list.h> |
| 955 | palkovsky | 38 | #include <ipc/ipc.h> |
| 39 | #include <memstr.h> |
||
| 1 | jermar | 40 | |
| 623 | jermar | 41 | SPINLOCK_INITIALIZE(tasks_lock); |
| 624 | jermar | 42 | LIST_INITIALIZE(tasks_head); |
| 1 | jermar | 43 | |
| 107 | decky | 44 | /** Initialize tasks |
| 45 | * |
||
| 46 | * Initialize kernel tasks support. |
||
| 47 | * |
||
| 48 | */ |
||
| 1 | jermar | 49 | void task_init(void) |
| 50 | { |
||
| 15 | jermar | 51 | TASK = NULL; |
| 1 | jermar | 52 | } |
| 53 | |||
| 107 | decky | 54 | |
| 55 | /** Create new task |
||
| 56 | * |
||
| 57 | * Create new task with no threads. |
||
| 58 | * |
||
| 703 | jermar | 59 | * @param as Task's address space. |
| 107 | decky | 60 | * |
| 61 | * @return New task's structure on success, NULL on failure. |
||
| 62 | * |
||
| 63 | */ |
||
| 703 | jermar | 64 | task_t *task_create(as_t *as) |
| 1 | jermar | 65 | { |
| 413 | jermar | 66 | ipl_t ipl; |
| 1 | jermar | 67 | task_t *ta; |
| 68 | |||
| 822 | palkovsky | 69 | ta = (task_t *) malloc(sizeof(task_t), 0); |
| 70 | |||
| 71 | spinlock_initialize(&ta->lock, "task_ta_lock"); |
||
| 72 | list_initialize(&ta->th_head); |
||
| 73 | list_initialize(&ta->tasks_link); |
||
| 74 | ta->as = as; |
||
| 955 | palkovsky | 75 | |
| 76 | ipc_answerbox_init(&ta->answerbox); |
||
| 77 | memsetb((__address)&ta->phones, sizeof(ta->phones[0])*IPC_MAX_PHONES, 0); |
||
| 78 | if (ipc_central_box) |
||
| 79 | ipc_phone_init(&ta->phones[0], ipc_central_box); |
||
| 822 | palkovsky | 80 | |
| 81 | ipl = interrupts_disable(); |
||
| 82 | spinlock_lock(&tasks_lock); |
||
| 83 | list_append(&ta->tasks_link, &tasks_head); |
||
| 84 | spinlock_unlock(&tasks_lock); |
||
| 85 | interrupts_restore(ipl); |
||
| 86 | |||
| 1 | jermar | 87 | return ta; |
| 88 | } |
||
| 89 |