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[Feature] 关于名字重复性的问题,是否需要改变 rt_object_init 接口 #11043

@CYFS3

Description

@CYFS3

Describe problem solved by the proposed feature

获取句柄的方式
方法一:作为线程参数传递

/* 定义全局句柄变量 */
rt_mq_t mq_handle = RT_NULL;

void thread_entry(void* parameter)
{
    /* 1. 将 void* 强转回 rt_mq_t */
    rt_mq_t mq = (rt_mq_t)parameter;
    char buf[10];

    while (1)
    {
        /* 2. 使用句柄接收消息 */
        if (rt_mq_recv(mq, &buf, sizeof(buf), RT_WAITING_FOREVER) == RT_EOK)
        {
            rt_kprintf("Received: %s\n", buf);
        }
    }
}

int main(void)
{
    /* 创建消息队列 */
    mq_handle = rt_mq_create("mq1", 10, 5, RT_IPC_FLAG_FIFO);

    /* 创建线程时,将 mq_handle 作为第4个参数传递 */
    rt_thread_t tid = rt_thread_create("t1", thread_entry, (void*)mq_handle, 
                                       1024, 25, 10);
    if (tid != RT_NULL) rt_thread_startup(tid);
    
    return 0;
}

方法二:使用 extern 全局变量

rt_mq_t global_mq = RT_NULL; // 定义

void system_init(void) {
    global_mq = rt_mq_create("mq_global", 10, 5, RT_IPC_FLAG_FIFO);
}

方法三:使用 rt_object_find

void thread_consumer_entry(void* parameter)
{
    rt_mq_t find_mq;

    /* 1. 通过名字查找对象 */
    /* 注意:rt_object_find 返回的是 rt_object_t,需要强转,且需要指定类型 */
    rt_object_t obj = rt_object_find("sensor_mq", RT_Object_Class_MessageQueue);

    if (obj == RT_NULL)
    {
        rt_kprintf("Error: MQ not found!\n");
        return;
    }
    
    /* 2. 强转为消息队列句柄 */
    find_mq = (rt_mq_t)obj;

    /* 3. 使用 */
    char buffer[10];
    rt_mq_recv(find_mq, buffer, 10, RT_WAITING_FOREVER);
}

如果大家工程上大部分采用find话,那是不是得考虑名字的唯一性问题,#10968 中提议修改rt_object_init 接口的方法是否可行?

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