0,0 → 1,68 |
/* |
* 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 <synch/spinlock.h> |
#include <arch.h> |
#include <panic.h> |
#include <list.h> |
|
spinlock_t tasks_lock; |
link_t tasks_head; |
|
void task_init(void) |
{ |
the->task = NULL; |
spinlock_initialize(&tasks_lock); |
list_initialize(&tasks_head); |
} |
|
task_t *task_create(vm_t *m) |
{ |
pri_t pri; |
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; |
|
pri = cpu_priority_high(); |
spinlock_lock(&tasks_lock); |
list_append(&ta->tasks_link, &tasks_head); |
spinlock_unlock(&tasks_lock); |
cpu_priority_restore(pri); |
} |
return ta; |
} |
|