/*
 * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. 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.
 *
 * This file is part of the lwIP TCP/IP stack.
 * 
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#ifndef __ARCH_SYS_ARCH_H__
#define __ARCH_SYS_ARCH_H__ 
#include "arch/cc.h"
 
#ifdef USE_RTOS

#include "includes.h"

#define MAX_QUEUE_ENTRIES 		20	// 每个消息邮箱的大小
//LWIP消息邮箱结构体
typedef struct {
    OS_EVENT*   pQ;    //UCOS中指向事件控制块的指针
    void*       pvQEntries[MAX_QUEUE_ENTRIES];//消息队列 MAX_QUEUE_ENTRIES消息队列中最多消息数
} TQ_DESCR, *PQ_DESCR;


typedef OS_EVENT *sys_sem_t;
typedef OS_EVENT *sys_mutex_t;
typedef PQ_DESCR sys_mbox_t;    //LWIP使用的消息邮箱,其实就是UCOS中的消息队列
typedef INT8U sys_thread_t;

#endif

u32_t sys_now(void);
#endif