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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * ALSA sequencer Priority Queue4 * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>5 */6#ifndef __SND_SEQ_PRIOQ_H7#define __SND_SEQ_PRIOQ_H8 9#include "seq_memory.h"10 11 12/* === PRIOQ === */13 14struct snd_seq_prioq {15 struct snd_seq_event_cell *head; /* pointer to head of prioq */16 struct snd_seq_event_cell *tail; /* pointer to tail of prioq */17 int cells;18 spinlock_t lock;19};20 21 22/* create new prioq (constructor) */23struct snd_seq_prioq *snd_seq_prioq_new(void);24 25/* delete prioq (destructor) */26void snd_seq_prioq_delete(struct snd_seq_prioq **fifo);27 28/* enqueue cell to prioq */29int snd_seq_prioq_cell_in(struct snd_seq_prioq *f, struct snd_seq_event_cell *cell);30 31/* dequeue cell from prioq */ 32struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,33 void *current_time);34 35/* return number of events available in prioq */36int snd_seq_prioq_avail(struct snd_seq_prioq *f);37 38/* client left queue */39void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp); 40 41/* Remove events */42void snd_seq_prioq_remove_events(struct snd_seq_prioq *f, int client,43 struct snd_seq_remove_events *info);44 45#endif46