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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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    /** 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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     * Must be acquired before T.lock for each T of type task_t.
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     *
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     */
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     */
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    SPINLOCK_DECLARE(lock);
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    SPINLOCK_DECLARE(lock);
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    char name[THREAD_NAME_BUFLEN];
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    char name[THREAD_NAME_BUFLEN];
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    /** True if this thread is executing copy_from_uspace(). False otherwise. */
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    /** True if this thread is executing copy_from_uspace(). False otherwise. */
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    bool in_copy_from_uspace;
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    bool in_copy_from_uspace;
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    /** True if this thread is executing copy_to_uspace(). False otherwise. */
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    /** True if this thread is executing copy_to_uspace(). False otherwise. */
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    bool in_copy_to_uspace;
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    bool in_copy_to_uspace;
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    /**
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     * If true, the thread will not go to sleep at all and will
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     * call thread_exit() before returning to userspace.
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     */
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    bool interrupted;          
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    bool detached;              /**< If true, thread_join_timeout() cannot be used on this thread. */
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    bool detached;              /**< If true, thread_join_timeout() cannot be used on this thread. */
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    waitq_t join_wq;            /**< Waitq for thread_join_timeout(). */
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    waitq_t join_wq;            /**< Waitq for thread_join_timeout(). */
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    fpu_context_t *saved_fpu_context;
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    fpu_context_t *saved_fpu_context;
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    int fpu_context_exists;
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    int fpu_context_exists;