线程创建位置问题求助

发布于 2021-06-09 15:41:06 浏览：883 订阅该版

caihaitao 2021-06-10

这家伙很懒，什么也没写！

你写的函数，最后一定会执行__exit的地方的，如果上面的线程和定时器创建成功的话，那线程和定时器直接就被删除啦。这种写法有错误的，

```
void ec200_tcp_heart(void)
{
    static rt_thread_t  heart_thread_tid = RT_NULL;
    static rt_timer_t heart_timer_tid = RT_NULL;

heart_thread_tid = rt_thread_create("heart_thread",
                                        ec200_heart_entry,
                                        RT_NULL,
                                        THREAD_STACK_SIZE,
                                        THREAD_PRIORITY,
                                        THREAD_TIMESLICE);
    if (heart_thread_tid != RT_NULL)
    {
        rt_thread_startup(heart_thread_tid);
        rt_kprintf("heart_thread startup!\n");
    }
    else
    {
        goto __exit;
    }

heart_timer_tid = rt_timer_create("heart_timer",
                                      ec200_heart_timer,
                                      RT_NULL,
                                      10,
                                      RT_TIMER_FLAG_PERIODIC);
    if(heart_timer_tid != RT_NULL)
    {
        rt_timer_start(heart_timer_tid);
        rt_kprintf("heart_timer startup!\n");
    }
    else
    {
        goto __exit;
    }
    
    return ;

__exit:
    if (heart_thread_tid)
        rt_thread_delete(heart_thread_tid);
    if(heart_timer_tid)
        rt_timer_delete(heart_timer_tid);
}
```
添加下return，估计执行就没问题啦。

小凡凡 2021-06-10

这家伙很懒，什么也没写！

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7 个回答

zhkag 2021-06-09

这家伙很懒，什么也没写！

小凡凡 2021-06-09

这家伙很懒，什么也没写！

下面是创建线程及线程函数
```c
void ec200_tcp_heart(void)
{

static rt_thread_t  heart_thread_tid = RT_NULL;
static rt_timer_t heart_timer_tid = RT_NULL;

heart_thread_tid = rt_thread_create("heart_thread",
                                    ec200_heart_entry,
                                    RT_NULL,
                                    THREAD_STACK_SIZE,
                                    THREAD_PRIORITY,
                                    THREAD_TIMESLICE);
if (heart_thread_tid != RT_NULL)
{
    rt_thread_startup(heart_thread_tid);
    rt_kprintf("heart_thread startup!\n");
}
else
{
    goto __exit;
}

heart_timer_tid = rt_timer_create("heart_timer",
                                  ec200_heart_timer,
                                  RT_NULL,
                                  10,
                                  RT_TIMER_FLAG_PERIODIC);
if(heart_timer_tid != RT_NULL)
{
    rt_timer_start(heart_timer_tid);
    rt_kprintf("heart_timer startup!\n");
}
else
{
    goto __exit;
}
__exit:

if (heart_thread_tid)
    rt_thread_delete(heart_thread_tid);
if(heart_timer_tid)
    rt_timer_delete(heart_timer_tid);
}
```
然后在main函数里面调用ec200_tcp_heart函数，控制台打印出线程和定时器创建成功的信息，但是定时器超时函数和线程函数都没有运行。
把上述代码放到main.c文件里面，就都正常了。

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flashman2002 2021-06-09

这家伙很懒，什么也没写！

小凡凡 2021-06-09

这家伙很懒，什么也没写！

下面是创建线程及线程函数
```c
void ec200_tcp_heart(void)
{

static rt_thread_t  heart_thread_tid = RT_NULL;
static rt_timer_t heart_timer_tid = RT_NULL;

heart_thread_tid = rt_thread_create("heart_thread",
                                    ec200_heart_entry,
                                    RT_NULL,
                                    THREAD_STACK_SIZE,
                                    THREAD_PRIORITY,
                                    THREAD_TIMESLICE);
if (heart_thread_tid != RT_NULL)
{
    rt_thread_startup(heart_thread_tid);
    rt_kprintf("heart_thread startup!\n");
}
else
{
    goto __exit;
}

heart_timer_tid = rt_timer_create("heart_timer",
                                  ec200_heart_timer,
                                  RT_NULL,
                                  10,
                                  RT_TIMER_FLAG_PERIODIC);
if(heart_timer_tid != RT_NULL)
{
    rt_timer_start(heart_timer_tid);
    rt_kprintf("heart_timer startup!\n");
}
else
{
    goto __exit;
}
__exit:

flashman2002 2021-06-09

这家伙很懒，什么也没写！

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小凡凡 2021-06-09

这家伙很懒，什么也没写！

下面是创建线程及线程函数
```c
void ec200_tcp_heart(void)
{
    static rt_thread_t  heart_thread_tid = RT_NULL;
    static rt_timer_t heart_timer_tid = RT_NULL;

__exit:
    if (heart_thread_tid)
        rt_thread_delete(heart_thread_tid);
    if(heart_timer_tid)
        rt_timer_delete(heart_timer_tid);
}
```
然后在main函数里面调用ec200_tcp_heart函数，控制台打印出线程和定时器创建成功的信息，但是定时器超时函数和线程函数都没有运行。
把上述代码放到main.c文件里面，就都正常了。