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Rev 4296 Rev 4537
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#include <print.h>
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#include <print.h>
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#include <errno.h>
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#include <errno.h>
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#include <func.h>
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#include <func.h>
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#include <string.h>
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#include <string.h>
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#include <syscall/copy.h>
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#include <syscall/copy.h>
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#include <macros.h>
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#include <ipc/event.h>
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/** Spinlock protecting the tasks_tree AVL tree. */
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/** Spinlock protecting the tasks_tree AVL tree. */
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SPINLOCK_INITIALIZE(tasks_lock);
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SPINLOCK_INITIALIZE(tasks_lock);
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/** AVL tree of active tasks.
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/** AVL tree of active tasks.
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    avltree_node_initialize(&ta->tasks_tree_node);
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    avltree_node_initialize(&ta->tasks_tree_node);
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    ta->tasks_tree_node.key = ta->taskid;
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    ta->tasks_tree_node.key = ta->taskid;
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    avltree_insert(&tasks_tree, &ta->tasks_tree_node);
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    avltree_insert(&tasks_tree, &ta->tasks_tree_node);
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    spinlock_unlock(&tasks_lock);
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    spinlock_unlock(&tasks_lock);
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    interrupts_restore(ipl);
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    interrupts_restore(ipl);
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    /*
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     * Notify about task creation.
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     */
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    if (event_is_subscribed(EVENT_WAIT))
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        event_notify_3(EVENT_WAIT, TASK_CREATE, LOWER32(ta->taskid),
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            UPPER32(ta->taskid));
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    return ta;
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    return ta;
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}
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}
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/** Destroy task.
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/** Destroy task.
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 *
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 *
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     * Drop our reference to the address space.
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     * Drop our reference to the address space.
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     */
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     */
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    if (atomic_predec(&t->as->refcount) == 0)
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    if (atomic_predec(&t->as->refcount) == 0)
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        as_destroy(t->as);
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        as_destroy(t->as);
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    /*
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     * Notify about task destruction.
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     */
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    if (event_is_subscribed(EVENT_WAIT))
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        event_notify_3(EVENT_WAIT, TASK_DESTROY, LOWER32(t->taskid),
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            UPPER32(t->taskid));
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    free(t);
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    free(t);
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    TASK = NULL;
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    TASK = NULL;
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}
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}
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/** Syscall for reading task ID from userspace.
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/** Syscall for reading task ID from userspace.