/*
 * Copyright (c) 2007 Jan Hudecek
 * Copyright (c) 2008 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup genericproc
 * @{
 */
/** @file tasklet.h
 * @brief Tasklets declarations
 */

#ifndef KERN_TASKLET_H_
#define KERN_TASKLET_H_

#include <adt/list.h>

/** Tasklet callback type */
typedef void (* tasklet_callback_t)(void *arg);

/** Tasklet state */
typedef enum {
	NotActive,
	Scheduled,
	InProgress,
	Disabled
} tasklet_state_t;

/** Structure describing a tasklet */
typedef struct tasklet_descriptor {
	link_t link;
	
	/** Callback to call */
	tasklet_callback_t callback;
	
	/** Argument passed to the callback */
	void* arg;
	
	/** State of the tasklet */
	tasklet_state_t state;
} tasklet_descriptor_t;


extern void tasklet_init(void);

#endif

/** @}
 */