rt-4.1.0Bete版线程中使用mdelay后，线程结束时无法被回收？

发布于 2022-04-09 10:07:02 浏览：1028 订阅该版

3 个回答

aozima 2022-04-09

调网络不抓包，调I2C等时序不上逻辑分析仪，就像电工不用万用表！多用整理的好的文字，比截图更省流量，还能在整理过程中思考。

Yanye0xFF 2022-04-09

https

请登录后再发布评论，点击登录

追加回复

出出啊 2022-04-09

恃人不如自恃，人之为己者不如己之自为也

Yanye0xFF 2022-04-09

https

我已经解决了：
从rt-4.0.3复制如下一段代码到4.1.0
 `const volatile rt_list_t *l = (const volatile rt_list_t *)&rt_thread_defunct;`
```
// rt-4.0.3 idle.c
/* Return whether there is defunctional thread to be deleted. */
rt_inline int _has_defunct_thread(void)
{
    /* The rt_list_isempty has prototype of "int rt_list_isempty(const rt_list_t *l)".
     * So the compiler has a good reason that the rt_thread_defunct list does
     * not change within rt_thread_idle_excute thus optimize the "while" loop
     * into a "if".
     *
     * So add the volatile qualifier here. */
    const volatile rt_list_t *l = (const volatile rt_list_t *)&rt_thread_defunct;

return l->next != l;
}
```
复制到rt-4.1.0 idle.c中
```
/**
 * @brief Dequeue a thread from defunct queue.
 */
rt_thread_t rt_thread_defunct_dequeue(void)
{
    register rt_base_t lock;
    rt_thread_t thread = RT_NULL;
   // rt_list_t *l = &_rt_thread_defunct;
    // 替换到这里
    const volatile rt_list_t *l = (const volatile rt_list_t *)&_rt_thread_defunct;
    // 以下代码省略...
```

如果出现和我一样的问题，可以试试这样修改。
main.c启用了软timer延时
![2022-04-09_144513.png](https://oss-club.rt-thread.org/uploads/20220409/b21c1a3c696bfbfafc7a147bc47f09bc.png)
动态线程栈和控制块也被正确释放，ps线程列表也没有出现close线程了。
![2022-04-09_144600.png](https://oss-club.rt-thread.org/uploads/20220409/961a4b925ed365537326f2e15837765f.png)