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#ifndef XFRAME_QUEUE_H
#define XFRAME_QUEUE_H
#include <linux/list.h>
#include <linux/spinlock.h>
#include "xdefs.h"
#define XFRAME_QUEUE_MARGIN 10
struct xframe_queue {
struct list_head head;
unsigned int count;
unsigned int max_count;
unsigned int steady_state_count;
spinlock_t lock;
const char *name;
void *priv;
/* statistics */
unsigned int worst_count;
unsigned int overflows;
unsigned long worst_lag_usec; /* since xframe creation */
};
void xframe_queue_init(struct xframe_queue *q,
unsigned int steady_state_count, unsigned int max_count,
const char *name, void *priv);
__must_check bool xframe_enqueue(struct xframe_queue *q, xframe_t *xframe);
__must_check xframe_t *xframe_dequeue(struct xframe_queue *q);
void xframe_queue_clearstats(struct xframe_queue *q);
void xframe_queue_disable(struct xframe_queue *q);
void xframe_queue_clear(struct xframe_queue *q);
uint xframe_queue_count(struct xframe_queue *q);
#endif /* XFRAME_QUEUE_ */
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