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#include <synch/waitq.h>
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#include <synch/waitq.h>
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#include <genarch/mm/page_ht.h>
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#include <genarch/mm/page_ht.h>
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#include <genarch/mm/page_pt.h>
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#include <genarch/mm/page_pt.h>
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/** Kernel-side futex structure. */
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/** Kernel-side futex structure. */
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struct futex {
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typedef struct {
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    uintptr_t paddr;    /**< Physical address of the status variable. */
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    uintptr_t paddr;    /**< Physical address of the status variable. */
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    waitq_t wq;     /**< Wait queue for threads waiting for futex availability. */
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    waitq_t wq;     /**< Wait queue for threads waiting for futex availability. */
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    link_t ht_link;     /**< Futex hash table link. */
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    link_t ht_link;     /**< Futex hash table link. */
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    count_t refcount;   /**< Number of tasks that reference this futex. */
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    count_t refcount;   /**< Number of tasks that reference this futex. */
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};
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} futex_t;
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extern void futex_init(void);
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extern void futex_init(void);
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extern unative_t sys_futex_sleep_timeout(uintptr_t uaddr, uint32_t usec, int flags);
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extern unative_t sys_futex_sleep_timeout(uintptr_t uaddr, uint32_t usec, int flags);
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extern unative_t sys_futex_wakeup(uintptr_t uaddr);
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extern unative_t sys_futex_wakeup(uintptr_t uaddr);
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