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35 lines
995 B
35 lines
995 B
#ifndef XFRAME_QUEUE_H
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#define XFRAME_QUEUE_H
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include "xdefs.h"
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#define XFRAME_QUEUE_MARGIN 10
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struct xframe_queue {
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struct list_head head;
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bool disabled;
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unsigned int count;
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unsigned int max_count;
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unsigned int steady_state_count;
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spinlock_t lock;
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const char *name;
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void *priv;
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/* statistics */
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unsigned int worst_count;
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unsigned int overflows;
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s64 worst_lag_usec; /* since xframe creation */
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};
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void xframe_queue_init(struct xframe_queue *q, unsigned int steady_state_count,
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unsigned int max_count, const char *name, void *priv);
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__must_check bool xframe_enqueue(struct xframe_queue *q, xframe_t *xframe);
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__must_check xframe_t *xframe_dequeue(struct xframe_queue *q);
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void xframe_queue_clearstats(struct xframe_queue *q);
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void xframe_queue_disable(struct xframe_queue *q, bool disabled);
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void xframe_queue_clear(struct xframe_queue *q);
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uint xframe_queue_count(struct xframe_queue *q);
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#endif /* XFRAME_QUEUE_ */
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