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xpp
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xframe_queue.h

xframe_queue.h 1010 B
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  1. #ifndef	XFRAME_QUEUE_H
    2. 

  2. #define	XFRAME_QUEUE_H
    3. 

  3. 

  4. #include <linux/list.h>
    5. 

  5. #include <linux/spinlock.h>
    6. 

  6. #include "xdefs.h"
    7. 

  7. 

  8. #define	XFRAME_QUEUE_MARGIN	10
    9. 

  9. 

  10. struct xframe_queue {
    11. 

  11. 	struct list_head	head;
    12. 

  12. 	bool			disabled;
    13. 

  13. 	unsigned int		count;
    14. 

  14. 	unsigned int		max_count;
    15. 

  15. 	unsigned int		steady_state_count;
    16. 

  16. 	spinlock_t		lock;
    17. 

  17. 	const char		*name;
    18. 

  18. 	void			*priv;
    19. 

  19. 	/* statistics */
    20. 

  20. 	unsigned int		worst_count;
    21. 

  21. 	unsigned int		overflows;
    22. 

  22. 	unsigned long		worst_lag_usec;	/* since xframe creation */
    23. 

  23. };
    24. 

  24. 

  25. void xframe_queue_init(struct xframe_queue *q,
    26. 

  26. 	unsigned int steady_state_count, unsigned int max_count,
    27. 

  27. 	const char *name, void *priv);
    28. 

  28. __must_check bool xframe_enqueue(struct xframe_queue *q, xframe_t *xframe);
    29. 

  29. __must_check xframe_t *xframe_dequeue(struct xframe_queue *q);
    30. 

  30. void xframe_queue_clearstats(struct xframe_queue *q);
    31. 

  31. void xframe_queue_disable(struct xframe_queue *q, bool disabled);
    32. 

  32. void xframe_queue_clear(struct xframe_queue *q);
    33. 

  33. uint xframe_queue_count(struct xframe_queue *q);
    34. 

  34. 

  35. #endif	/* XFRAME_QUEUE_ */
    36. 

  36.