Files
kichikuou_xsystem35-sdl2/src/msgqueue.h
T
kichikuou d8513d78e4 rawmidi: Use a background thread rather than a subprocess
This removes the last usage of fork() in xystem35.
2021-11-13 12:51:14 +09:00

46 lines
1.3 KiB
C

/*
* Copyright (C) 2021 kichikuou <KichikuouChrome@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __MSGQUEUE_H__
#define __MSGQUEUE_H__
#include <stdbool.h>
#include <SDL_mutex.h>
struct msgq_elem;
struct msgq {
SDL_mutex *mutex;
SDL_cond *cond_nonempty;
struct msgq_elem *head;
struct msgq_elem *last;
};
static inline bool msgq_isempty(struct msgq *q) {
return !q->head;
}
struct msgq *msgq_new(void);
void msgq_free(struct msgq *q);
void msgq_enqueue(struct msgq *q, void *msg);
void *msgq_dequeue(struct msgq *q);
void *msgq_dequeue_timeout(struct msgq *q, uint32_t timeout_ms);
#endif // __MSGQUEUE_H__