queue.h

嵌入式操作系统EOS（Embedded OperatingSystem）是一种用途广泛的系统软件

/*
** Copyright (C) 2006 Tamir Michael
**  
** 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 _QUEUE
#define _QUEUE

#include "general_definitions.h"

typedef struct
{
	int8u		head ;
	int8u		tail ;
	int8u		size ;
	int32s		values[MAX_QUEUE_ELEMENTS] ;
} queue_info ;

// module interface starts here

int16s	queue_init(queue_info*) ;
int16s	queue_enqueue(queue_info*, int32s) ;
int32s	queue_dequeue(queue_info*) ;
int16s	queue_empty(queue_info*) ;
int8u	queue_is_empty(const queue_info*) ;
int16s	queue_num_elements(const queue_info*) ;
int16s	queue_search(const queue_info*, int32s) ;
int16s	queue_move(queue_info*, queue_info*, int32s) ;
void 	queue_print(const queue_info *) ;

#endif