| 0,0 → 1,85 |
|---|
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <proc/thread.h> |
| #include <proc/task.h> |
| #include <mm/vm.h> |
| #include <mm/heap.h> |
| |
| #include <synch/spinlock.h> |
| #include <arch.h> |
| #include <panic.h> |
| #include <list.h> |
| |
| spinlock_t tasks_lock; |
| link_t tasks_head; |
| |
| |
| /** Initialize tasks |
| * |
| * Initialize kernel tasks support. |
| * |
| */ |
| void task_init(void) |
| { |
| TASK = NULL; |
| spinlock_initialize(&tasks_lock); |
| list_initialize(&tasks_head); |
| } |
| |
| |
| /** Create new task |
| * |
| * Create new task with no threads. |
| * |
| * @param m Task's virtual memory structure. |
| * |
| * @return New task's structure on success, NULL on failure. |
| * |
| */ |
| task_t *task_create(vm_t *m) |
| { |
| ipl_t ipl; |
| task_t *ta; |
| |
| ta = (task_t *) malloc(sizeof(task_t)); |
| if (ta) { |
| spinlock_initialize(&ta->lock); |
| list_initialize(&ta->th_head); |
| list_initialize(&ta->tasks_link); |
| ta->vm = m; |
| |
| ipl = interrupts_disable(); |
| spinlock_lock(&tasks_lock); |
| list_append(&ta->tasks_link, &tasks_head); |
| spinlock_unlock(&tasks_lock); |
| interrupts_restore(ipl); |
| } |
| return ta; |
| } |
| |