132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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*
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*/
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/*
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* 程序清单：消息队列例程
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*
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* 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
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* 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。
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*/
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#include <rtthread.h>
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#include "tc_comm.h"
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/* 指向线程控制块的指针 */
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static rt_thread_t tid = RT_NULL;
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/* 消息队列控制块 */
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static struct rt_messagequeue mq;
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/* 消息队列中用到的放置消息的内存池 */
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static char msg_pool[2048];
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/* 定时器的控制块 */
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static struct rt_timer timer;
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static rt_uint16_t no = 0;
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static void timer_timeout(void* parameter)
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{
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char buf[32];
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rt_uint32_t length;
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length = rt_snprintf(buf, sizeof(buf), "message %d", no++);
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rt_mq_send(&mq, &buf[0], length);
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}
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/* 线程入口函数 */
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static void thread_entry(void* parameter)
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{
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char buf[64];
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rt_err_t result;
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/* 初始化定时器 */
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rt_timer_init(&timer, "timer", /* 定时器名字是 timer1 */
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timer_timeout, /* 超时时回调的处理函数 */
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RT_NULL, /* 超时函数的入口参数 */
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1, /* 定时长度，以OS Tick为单位，即1个OS Tick */
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RT_TIMER_FLAG_PERIODIC); /* 周期性定时器 */
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while (1)
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{
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rt_memset(&buf[0], 0, sizeof(buf));
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/* 从消息队列中接收消息 */
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result = rt_mq_recv(&mq, &buf[0], sizeof(buf), 1);
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if (result == RT_EOK)
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{
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rt_kprintf("recv msg: %s\n", buf);
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}
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else if (result == -RT_ETIMEOUT)
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{
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rt_kprintf("recv msg timeout\n");
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}
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}
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}
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int timer_timeout_init()
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{
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/* 初始化消息队列 */
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rt_mq_init(&mq, "mqt",
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&msg_pool[0], /* 内存池指向msg_pool */
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128 - sizeof(void*), /* 每个消息的大小是 128 - void* */
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sizeof(msg_pool), /* 内存池的大小是msg_pool的大小 */
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RT_IPC_FLAG_PRIO); /* 如果有多个线程等待，按照优先级由高到低的方法分配消息 */
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/* 创建线程 */
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tid = rt_thread_create("t",
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thread_entry, RT_NULL, /* 线程入口是thread_entry, 入口参数是RT_NULL */
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THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
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if (tid != RT_NULL)
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rt_thread_startup(tid);
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else
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tc_stat(TC_STAT_END | TC_STAT_FAILED);
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return 0;
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}
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#ifdef RT_USING_TC
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static void _tc_cleanup()
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{
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/* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
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rt_enter_critical();
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/* 删除线程 */
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if (tid != RT_NULL && tid->stat != RT_THREAD_CLOSE)
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rt_thread_delete(tid);
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/* 执行消息队列对象脱离 */
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rt_mq_detach(&mq);
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/* 执行定时器脱离 */
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rt_timer_detach(&timer);
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/* 调度器解锁 */
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rt_exit_critical();
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/* 设置TestCase状态 */
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tc_done(TC_STAT_PASSED);
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}
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int _tc_timer_timeout()
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{
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/* 设置TestCase清理回调函数 */
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tc_cleanup(_tc_cleanup);
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timer_timeout_init();
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/* 返回TestCase运行的最长时间 */
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return 100;
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}
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/* 输出函数命令到finsh shell中 */
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FINSH_FUNCTION_EXPORT(_tc_timer_timeout, a thread timer testcase);
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#else
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/* 用户应用入口 */
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int rt_application_init()
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{
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timer_timeout_init();
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return 0;
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}
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#endif
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