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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* ALSA sequencer Priority Queue
* Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
*/
#ifndef __SND_SEQ_PRIOQ_H
#define __SND_SEQ_PRIOQ_H
#include "seq_memory.h"
/* === PRIOQ === */
struct snd_seq_prioq {
struct snd_seq_event_cell *head; /* pointer to head of prioq */
struct snd_seq_event_cell *tail; /* pointer to tail of prioq */
int cells;
spinlock_t lock;
};
/* create new prioq (constructor) */
struct snd_seq_prioq *snd_seq_prioq_new(void);
/* delete prioq (destructor) */
void snd_seq_prioq_delete(struct snd_seq_prioq **fifo);
/* enqueue cell to prioq */
int snd_seq_prioq_cell_in(struct snd_seq_prioq *f, struct snd_seq_event_cell *cell);
/* dequeue cell from prioq */
struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
void *current_time);
/* return number of events available in prioq */
int snd_seq_prioq_avail(struct snd_seq_prioq *f);
/* client left queue */
void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp);
/* Remove events */
void snd_seq_prioq_remove_events(struct snd_seq_prioq *f, int client,
struct snd_seq_remove_events *info);
#endif
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