callback.h

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/*
 * Copyright (C) 2017 Inria
 *               2017 Freie Universität Berlin
 *               2017 Kaspar Schleiser <kaspar@schleiser.de>
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <assert.h>
#include "event.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    event_t super;              
    void (*callback)(void*);    
    void *arg;                  
} event_callback_t;

void event_callback_init(event_callback_t *event_callback, void (*callback)(void *), void *arg);

static inline void event_callback_post(event_queue_t *queue, event_callback_t *event)
{
    assert(event->callback);
    event_post(queue, &event->super);
}

static inline void event_callback_oneshot(event_callback_t *event,
                                          event_queue_t *queue,
                                          void (*callback)(void *), void *arg)
{
    event_callback_init(event, callback, arg);
    event_post(queue, &event->super);
}

void _event_callback_handler(event_t *event);

#define EVENT_CALLBACK_INIT(_cb, _arg) \
    { \
        .super.handler = _event_callback_handler, \
        .callback = _cb, \
        .arg = (void *)_arg \
    }
 
#ifdef __cplusplus
}
#endif