task.
h
void vTaskGetInfo( TaskHandle_t xTask, TaskStatus_t *pxTaskStatus, BaseType_t xGetFreeStackSpace, eTaskState eState );
configUSE_TRACE_FACILITY must be defined as 1 for this function to be available. See the configuration section for more information.
Populates a TaskStatus_t structure with information about a task.
xTask | Handle of the task being queried. If xTask is NULL then information will be returned about the calling task. |
pxTaskStatus | A pointer to the TaskStatus_t structure that will be filled with information about the task referenced by the handle passed using the xTask parameter. |
The TaskStatus_t structure contains a member to report the stack high water mark of the task being queried. Calculating the stack high water mark takes a relatively long time, and can make the system temporarily unresponsive - so the xGetFreeStackSpace parameter is provided to allow the high water mark checking to be skipped. The high watermark value will only be written to the TaskStatus_t structure if xGetFreeStackSpace is not set to pdFALSE;
eState | The TaskStatus_t structure contains a member to report the state of the task being queried. Obtaining the task state is not as fast as a simple assignment - so the eState parameter is provided to allow the state information to be omitted from the TaskStatus_t structure. To obtain state information then set eState to eInvalid - otherwise the value passed in eState will be reported as the task state in the TaskStatus_t structure. |
Example usage:
void vAFunction( void ) { TaskHandle_t xHandle; TaskStatus_t xTaskDetails;
Obtain the handle of a task from its name. xHandle = xTaskGetHandle( "Task_Name" );
Check the handle is not NULL. configASSERT( xHandle );
Use the handle to obtain further information about the task. vTaskGetInfo( xHandle, &xTaskDetails, pdTRUE, // Include the high water mark in xTaskDetails. eInvalid ); // Include the task state in xTaskDetails. }