[Solved] What is wrong with this FreeRTOS design pattern code snippet?void TaskA(void *pvParameters) { xSemaphoreTake(mutex, 0); // critical section code xSemaphoreGive(mutex); vTaskDelete(NULL); } | FreeRTOS

FreeRTOS - Design Patterns for RTOS

What is wrong with this FreeRTOS design pattern code snippet?

void TaskA(void *pvParameters) {
  xSemaphoreTake(mutex, 0);
  // critical section code
  xSemaphoreGive(mutex);
  vTaskDelete(NULL);
}

AUsing zero block time may cause task to skip critical section without waiting.

BMutex is given before taking it.

CvTaskDelete should be called before giving mutex.

DCritical section code is missing.

Step-by-Step Solution

Solution:

Step 1: Analyze semaphore take with zero block time
Using zero block time means the task tries to take the mutex but does not wait if it's unavailable, possibly skipping the critical section.
Step 2: Understand impact on reliability
This can cause unreliable behavior because the task may not execute the critical section safely every time.
Final Answer:
Using zero block time may cause task to skip critical section without waiting. -> Option A
Quick Check:
Zero wait risks skipping mutex [OK]

Quick Trick: Zero wait means no blocking; task may skip critical section [OK]

Common Mistakes:

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