2013-01-08 21:05:02 +08:00
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/*
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* 程序清单：线程脱离
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*
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* 这个例子会创建两个线程，在其中一个线程中执行对另一个线程的脱离。
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*/
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#include <rtthread.h>
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#include "tc_comm.h"
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/* 线程1控制块 */
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static struct rt_thread thread1;
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/* 线程1栈 */
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static rt_uint8_t thread1_stack[THREAD_STACK_SIZE];
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/* 线程2控制块 */
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static struct rt_thread thread2;
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/* 线程2栈 */
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static rt_uint8_t thread2_stack[THREAD_STACK_SIZE];
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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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rt_uint32_t count = 0;
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while (1)
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{
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/* 线程1采用低优先级运行，一直打印计数值 */
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rt_kprintf("thread count: %d\n", count ++);
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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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/* 线程2拥有较高的优先级，以抢占线程1而获得执行 */
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/* 线程2启动后先睡眠10个OS Tick */
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rt_thread_delay(10);
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/*
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* 线程2唤醒后直接执行线程1脱离，线程1将从就绪线程队列中删除
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*/
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rt_thread_detach(&thread1);
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/*
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* 线程2继续休眠10个OS Tick然后退出
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*/
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rt_thread_delay(10);
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/*
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* 线程2运行结束后也将自动被从就绪队列中删除，并脱离线程队列
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*/
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}
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int thread_detach_init()
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{
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rt_err_t result;
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/* 初始化线程1 */
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result = rt_thread_init(&thread1, "t1", /* 线程名：t1 */
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thread1_entry, RT_NULL, /* 线程的入口是thread1_entry，入口参数是RT_NULL*/
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&thread1_stack[0], sizeof(thread1_stack), /* 线程栈是thread1_stack */
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THREAD_PRIORITY, 10);
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if (result == RT_EOK) /* 如果返回正确，启动线程1 */
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rt_thread_startup(&thread1);
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else
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tc_stat(TC_STAT_END | TC_STAT_FAILED);
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/* 初始化线程2 */
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result = rt_thread_init(&thread2, "t2", /* 线程名：t2 */
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thread2_entry, RT_NULL, /* 线程的入口是thread2_entry，入口参数是RT_NULL*/
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&thread2_stack[0], sizeof(thread2_stack), /* 线程栈是thread2_stack */
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THREAD_PRIORITY - 1, 10);
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if (result == RT_EOK) /* 如果返回正确，启动线程2 */
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rt_thread_startup(&thread2);
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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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/* 执行线程脱离 */
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if (thread1.stat != RT_THREAD_CLOSE)
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rt_thread_detach(&thread1);
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if (thread2.stat != RT_THREAD_CLOSE)
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rt_thread_detach(&thread2);
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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_detach()
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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_detach_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_detach, a static thread 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_detach_init();
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return 0;
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}
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#endif
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