177 lines
4.7 KiB
C
177 lines
4.7 KiB
C
/*
|
||
* Copyright (c) 2006-2021, RT-Thread Development Team
|
||
*
|
||
* SPDX-License-Identifier: Apache-2.0
|
||
*
|
||
* Change Logs:
|
||
*
|
||
*/
|
||
|
||
/*
|
||
* 程序清单：消息队列例程
|
||
*
|
||
* 这个程序会创建3个动态线程，一个线程会从消息队列中收取消息；一个线程会定时给消
|
||
* 息队列发送消息；一个线程会定时给消息队列发送紧急消息。
|
||
*/
|
||
#include <rtthread.h>
|
||
#include "tc_comm.h"
|
||
|
||
/* 指向线程控制块的指针 */
|
||
static rt_thread_t tid1 = RT_NULL;
|
||
static rt_thread_t tid2 = RT_NULL;
|
||
static rt_thread_t tid3 = RT_NULL;
|
||
|
||
/* 消息队列控制块 */
|
||
static struct rt_messagequeue mq;
|
||
/* 消息队列中用到的放置消息的内存池 */
|
||
static char msg_pool[2048];
|
||
|
||
/* 线程1入口函数 */
|
||
static void thread1_entry(void* parameter)
|
||
{
|
||
char buf[128];
|
||
|
||
while (1)
|
||
{
|
||
rt_memset(&buf[0], 0, sizeof(buf));
|
||
|
||
/* 从消息队列中接收消息 */
|
||
if (rt_mq_recv(&mq, &buf[0], sizeof(buf), RT_WAITING_FOREVER) == RT_EOK)
|
||
{
|
||
rt_kprintf("thread1: recv msg from message queue, the content:%s\n", buf);
|
||
}
|
||
|
||
/* 延迟10个OS Tick */
|
||
rt_thread_delay(10);
|
||
}
|
||
}
|
||
|
||
/* 线程2入口函数 */
|
||
static void thread2_entry(void* parameter)
|
||
{
|
||
int i, result;
|
||
char buf[] = "this is message No.x";
|
||
|
||
while (1)
|
||
{
|
||
for (i = 0; i < 10; i++)
|
||
{
|
||
buf[sizeof(buf) - 2] = '0' + i;
|
||
|
||
rt_kprintf("thread2: send message - %s\n", buf);
|
||
/* 发送消息到消息队列中 */
|
||
result = rt_mq_send(&mq, &buf[0], sizeof(buf));
|
||
if ( result == -RT_EFULL)
|
||
{
|
||
/* 消息队列满， 延迟1s时间 */
|
||
rt_kprintf("message queue full, delay 1s\n");
|
||
rt_thread_delay(100);
|
||
}
|
||
}
|
||
|
||
/* 延时10个OS Tick */
|
||
rt_thread_delay(10);
|
||
}
|
||
}
|
||
|
||
/* 线程3入口函数 */
|
||
static void thread3_entry(void* parameter)
|
||
{
|
||
char buf[] = "this is an urgent message!";
|
||
|
||
while (1)
|
||
{
|
||
rt_kprintf("thread3: send an urgent message\n");
|
||
|
||
/* 发送紧急消息到消息队列中 */
|
||
rt_mq_urgent(&mq, &buf[0], sizeof(buf));
|
||
|
||
/* 延时25个OS Tick */
|
||
rt_thread_delay(25);
|
||
}
|
||
}
|
||
|
||
int messageq_simple_init()
|
||
{
|
||
/* 初始化消息队列 */
|
||
rt_mq_init(&mq, "mqt",
|
||
&msg_pool[0], /* 内存池指向msg_pool */
|
||
128 - sizeof(void*), /* 每个消息的大小是 128 - void* */
|
||
sizeof(msg_pool), /* 内存池的大小是msg_pool的大小 */
|
||
RT_IPC_FLAG_FIFO); /* 如果有多个线程等待，按照先来先得到的方法分配消息 */
|
||
|
||
/* 创建线程1 */
|
||
tid1 = rt_thread_create("t1",
|
||
thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
|
||
THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
|
||
if (tid1 != RT_NULL)
|
||
rt_thread_startup(tid1);
|
||
else
|
||
tc_stat(TC_STAT_END | TC_STAT_FAILED);
|
||
|
||
/* 创建线程2 */
|
||
tid2 = rt_thread_create("t2",
|
||
thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
|
||
THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
|
||
if (tid2 != RT_NULL)
|
||
rt_thread_startup(tid2);
|
||
else
|
||
tc_stat(TC_STAT_END | TC_STAT_FAILED);
|
||
|
||
/* 创建线程3 */
|
||
tid3 = rt_thread_create("t3",
|
||
thread3_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
|
||
THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
|
||
if (tid3 != RT_NULL)
|
||
rt_thread_startup(tid3);
|
||
else
|
||
tc_stat(TC_STAT_END | TC_STAT_FAILED);
|
||
|
||
return 0;
|
||
}
|
||
|
||
#ifdef RT_USING_TC
|
||
static void _tc_cleanup()
|
||
{
|
||
/* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
|
||
rt_enter_critical();
|
||
|
||
/* 删除线程 */
|
||
if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
|
||
rt_thread_delete(tid1);
|
||
if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
|
||
rt_thread_delete(tid2);
|
||
if (tid3 != RT_NULL && tid3->stat != RT_THREAD_CLOSE)
|
||
rt_thread_delete(tid3);
|
||
|
||
/* 执行消息队列对象脱离 */
|
||
rt_mq_detach(&mq);
|
||
|
||
/* 调度器解锁 */
|
||
rt_exit_critical();
|
||
|
||
/* 设置TestCase状态 */
|
||
tc_done(TC_STAT_PASSED);
|
||
}
|
||
|
||
int _tc_messageq_simple()
|
||
{
|
||
/* 设置TestCase清理回调函数 */
|
||
tc_cleanup(_tc_cleanup);
|
||
messageq_simple_init();
|
||
|
||
/* 返回TestCase运行的最长时间 */
|
||
return 100;
|
||
}
|
||
/* 输出函数命令到finsh shell中 */
|
||
FINSH_FUNCTION_EXPORT(_tc_messageq_simple, a simple message queue example);
|
||
#else
|
||
/* 用户应用入口 */
|
||
int rt_application_init()
|
||
{
|
||
messageq_simple_init();
|
||
|
||
return 0;
|
||
}
|
||
#endif
|