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#include <proc/task.h>
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#include <proc/task.h>
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#include <time/timeout.h>
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#include <time/timeout.h>
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#include <cpu.h>
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#include <cpu.h>
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#include <synch/rwlock.h>
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#include <synch/rwlock.h>
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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#include <adt/btree.h>
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#include <adt/avl.h>
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#include <mm/slab.h>
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#include <mm/slab.h>
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#include <arch/cpu.h>
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#include <arch/cpu.h>
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#include <mm/tlb.h>
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#include <mm/tlb.h>
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#include <proc/uarg.h>
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#include <proc/uarg.h>
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/** Thread structure. There is one per thread. */
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/** Thread structure. There is one per thread. */
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typedef struct thread {
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typedef struct thread {
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    link_t rq_link;     /**< Run queue link. */
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    link_t rq_link;     /**< Run queue link. */
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    link_t wq_link;     /**< Wait queue link. */
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    link_t wq_link;     /**< Wait queue link. */
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    link_t th_link;     /**< Links to threads within containing task. */
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    link_t th_link;     /**< Links to threads within containing task. */
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    /** Threads linkage to the threads_tree. */
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    avltree_node_t threads_tree_node;
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    /** Lock protecting thread structure.
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    /** Lock protecting thread structure.
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     *
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     *
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     * Protects the whole thread structure except list links above.
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     * Protects the whole thread structure except list links above.
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     */
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     */
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    uint8_t *kstack;
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    uint8_t *kstack;
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} thread_t;
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} thread_t;
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/** Thread list lock.
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/** Thread list lock.
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 *
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 *
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 * This lock protects all link_t structures chained in threads_head.
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 * This lock protects the threads_tree.
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 * Must be acquired before T.lock for each T of type thread_t.
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 * Must be acquired before T.lock for each T of type thread_t.
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 *
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 *
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 */
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 */
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SPINLOCK_EXTERN(threads_lock);
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SPINLOCK_EXTERN(threads_lock);
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/** B+tree containing all threads. */
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/** AVL tree containing all threads. */
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extern btree_t threads_btree;
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extern avltree_t threads_tree;
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extern void thread_init(void);
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extern void thread_init(void);
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extern thread_t *thread_create(void (* func)(void *), void *arg, task_t *task,
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extern thread_t *thread_create(void (* func)(void *), void *arg, task_t *task,
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    int flags, char *name, bool uncounted);
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    int flags, char *name, bool uncounted);
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extern void thread_attach(thread_t *t, task_t *task);
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extern void thread_attach(thread_t *t, task_t *task);