124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
/*
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* 程序清单：唤醒线程
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*
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* 这个例子中将创建两个动态线程，低优先级线程将挂起自身，然后
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* 高优先级线程将在一定时刻后唤醒低优先级线程。
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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 tid1 = RT_NULL;
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static rt_thread_t tid2 = RT_NULL;
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/* 线程1入口 */
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static void thread1_entry(void* parameter)
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{
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/* 低优先级线程1开始运行 */
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rt_kprintf("thread1 startup%d\n");
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/* 挂起自身 */
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rt_kprintf("suspend thread self\n");
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rt_thread_suspend(tid1);
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/* 主动执行线程调度 */
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rt_schedule();
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/* 当线程1被唤醒时 */
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rt_kprintf("thread1 resumed\n");
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}
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static void thread_cleanup(rt_thread_t tid)
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{
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if (tid == tid1)
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{
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tid1 = RT_NULL;
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}
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if (tid == tid2)
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{
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tid = RT_NULL;
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}
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}
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/* 线程2入口 */
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static void thread2_entry(void* parameter)
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{
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/* 延时10个OS Tick */
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rt_thread_delay(10);
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/* 唤醒线程1 */
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rt_thread_resume(tid1);
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rt_kprintf("thread2: to resume thread1\n");
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/* 延时10个OS Tick */
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rt_thread_delay(10);
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/* 线程2自动退出 */
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}
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int thread_resume_init()
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{
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/* 创建线程1 */
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tid1 = rt_thread_create("thread",
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thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
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THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
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if (tid1 != RT_NULL)
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{
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tid1->cleanup = thread_cleanup;
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rt_thread_startup(tid1);
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}
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else
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tc_stat(TC_STAT_END | TC_STAT_FAILED);
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/* 创建线程2 */
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tid2 = rt_thread_create("thread",
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thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
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THREAD_STACK_SIZE, THREAD_PRIORITY - 1, THREAD_TIMESLICE);
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if (tid2 != RT_NULL)
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{
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tid2->cleanup = thread_cleanup;
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rt_thread_startup(tid2);
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}
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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 (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
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rt_thread_delete(tid1);
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if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
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rt_thread_delete(tid2);
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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_thread_resume()
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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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thread_resume_init();
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/* 返回TestCase运行的最长时间 */
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return 25;
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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_thread_resume, a thread resume example);
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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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thread_resume_init();
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return 0;
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}
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#endif
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