Changeset f74bbaf in mainline for kernel/generic/src/proc/task.c

Timestamp:

2007-04-09T06:13:24Z (17 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d0b1443

Parents:

261595b

Message:

start shutdown infrastructure

File:

• kernel/generic/src/proc/task.c (modified) (2 diffs)

kernel/generic/src/proc/task.c

@@ -94 +94 @@
 }
 
+/** Kill all tasks except the current task.
+ *
+ */
+void task_done(void)
+{
+        task_t *t;
+        do { /* Repeat until there are any tasks except TASK */
+                
+                /* Messing with task structures, avoid deadlock */
+                ipl_t ipl = interrupts_disable();
+                spinlock_lock(&tasks_lock);
+                
+                t = NULL;
+                link_t *cur;
+                for (cur = tasks_btree.leaf_head.next; cur != &tasks_btree.leaf_head; cur = cur->next) {
+                        btree_node_t *node = list_get_instance(cur, btree_node_t, leaf_link);
+                        
+                        unsigned int i;
+                        for (i = 0; i < node->keys; i++) {
+                                if ((task_t *) node->value[i] != TASK) {
+                                        t = (task_t *) node->value[i];
+                                        break;
+                                }
+                        }
+                }
+                
+                if (t != NULL) {
+                        task_id_t id = t->taskid;
+                        
+                        spinlock_unlock(&tasks_lock);
+                        interrupts_restore(ipl);
+                        
+#ifdef CONFIG_DEBUG
+                        printf("Killing task %llu\n", id);
+#endif                  
+                        task_kill(id);
+                } else {
+                        spinlock_unlock(&tasks_lock);
+                        interrupts_restore(ipl);
+                }
+                
+        } while (t != NULL);
+}
 
 /** Create new task
@@ -374 +417 @@
         ipl_t ipl;
         
-        /* Messing with thread structures, avoid deadlock */
+        /* Messing with task structures, avoid deadlock */
         ipl = interrupts_disable();
         spinlock_lock(&tasks_lock);