How can you safely shut down all worker tasks in a task pool when the system needs to stop processing work items?

hard📝 Application Q9 of 15

FreeRTOS - Design Patterns for RTOS

ASend a special 'shutdown' work item to the queue for each worker to detect and exit

BDelete the queue immediately, causing tasks to crash and stop

CSuspend all tasks using vTaskSuspend(NULL) inside each worker

DIncrease task priorities to prevent them from running

Step-by-Step Solution

Solution:

Step 1: Understand safe shutdown method
Sending a special item lets each worker detect shutdown and exit cleanly.
Step 2: Evaluate other options
Deleting queue causes crashes, suspending tasks inside themselves is incorrect, priority increase does not stop tasks.
Final Answer:
Send a special 'shutdown' work item to the queue for each worker to detect and exit -> Option A
Quick Check:
Use special queue items for graceful shutdown [OK]

Quick Trick: Use special queue messages to signal workers to exit [OK]

Common Mistakes:

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