How do I find the task state?

Kernel
1

jorick23 wrote on Tuesday, March 04, 2008:

Given a task handle, I need to find the state of a task; either Ready, Blocked, or Suspended.  How do I do that?  I don’t see a function for that.

2

maxim79 wrote on Tuesday, March 04, 2008:

> Given a task handle, I need to find the state of a task; either Ready, Blocked, or Suspended.
> I don’t see a function for that.

FreeRTOS doesn’t provide such a function.

> How do I do that?

Keep tracking of what you’re programming. If the task is executed it is in ready/run state. If you call vTaskDelay() it switches to blocked state for number of ticks. If you call vTaskSuspend() the task is in state suspended.

3

rtel wrote on Tuesday, March 04, 2008:

You could implement such a function but it would not be particularly quick.  The list from which a task is referenced denotes the tasks state, and as references are bidirectional it is straightforward to find the list.  Look at the function vTaskList() for some clues - this prints out information on each task, including the state of the task.

Regards.

4

jorick23 wrote on Tuesday, March 04, 2008:

All of the lists are static.  I can’t access them from outside of the tasks.c module.  Is there a global way to access the lists?

5

rtel wrote on Tuesday, March 04, 2008:

There is no global way of accessing the lists - that is intentional.  You can add functions to tasks.c to access the lists.

Regards.