可以看到其实删除任务函数的逻辑并不复杂,当传入其他任务的句柄时将会将其从状态列表中移除,并交由prvDeleteTCB()函数进行释放内存。如果传入的是NULL时即代表删除任务本身,此时将由空闲任务负责释放被删除的任务内存,所以需要确保空闲任务能够有足够的时间去执行删除任务的内存资源释放,并且空闲任务的优先级通常设置为最...
vTaskDelete(NULL); iccid_return_num=3; 错误原因分析,在任务删除之后(调用vTaskDelete(NULL)之后),这个任务就在这个函数停止了,这行代码后面的代码不再执行,所以iccid_return_num无法赋值为3,正确的做法是 iccid_return_num =3; vTaskDelete(NULL);...
/* vTaskDelete(NULL); */ } } 函数源码解释: void vTaskDelete( TaskHandle_t xTaskToDelete ) { TCB_t * pxTCB; /* 进入临界区 */ taskENTER_CRITICAL(); { /* 如果xTaskToDelete为空,那么调用该函数的任务将会被删除 */ pxTCB = prvGetTCBFromHandle( xTaskToDelete ); /* 将任务从就绪和...
1. **使用互斥锁**：在执行打印日志操作之前，使用互斥锁（例如 `xSemaphoreCreateMutex()`）来确保在...
(NULL); } void app_main(void) { while (1) { ESP_LOGI(TAG, "main task running"); TaskHandle_t test_task_handle = NULL; xTaskCreate(test_task, "test_task", 1024 * 5, NULL, 10, &test_task_handle); vTaskDelay(10); vTaskDelete(test_task_handle); vTaskDelay(100); } fflush(...
FreeRTOS(V8.0.1)系统之vTaskDelete()-void vTaskDelete( TaskHandle_t xTaskToDelete ){TCB_t *pxTCB;taskENTER_CRITICAL();{//若传进来的值为NULL则用此函数的就是任务本身。pxTCB = prvGetTCBFromHandle( xTaskToDelete );//根据任务句柄获取对应任务的句柄或TCB//将任务
FreeRTOS 删除任务概述任务的删除使用的 API 为:void vTaskDelete( TaskHandle_t xTask );任务删除主要是两种情况:自删除,即在任务本身的 TaskCode 中调用 vTaskDelete(null)删除自身。强制删除,即在其他任务中,删除另一个任务。在 FreeRTOS 创建任务的 Static 版本 一节中介绍了创建任务需要的两块存储空间,根...
One of the FreeRTOS requirements is that tasks never return, so if you want the task to go away it needs to call vTaskDelete(NULL). That said, there may be something we can do detect this and handle it in a way which is easier to debug. ...
xTaskCreate(vTask2,"Task 2",1000,NULL,2,&xTask2Handle); Here the last argument is a handle of the task “vTask2”. Now if you want to delete the above-created task any time during the program execution, you can simply callvTaskDelete() APIby passing handler to the task like this...
The reason I'm mentioning that is that if there are stale entries in the list of tasks, there could be a race where one task is calling vTaskDelete(NULL) on itself while another task is calling delete_all_tasks() leading to a vTaskDelete(that_task). ...