In a FreeRTOS application, you want to allocate memory for a struct and initialize it immediately. Which code correctly combines pvPortMalloc and initialization?

hard📝 Application Q9 of 15

FreeRTOS - Memory Management

In a FreeRTOS application, you want to allocate memory for a struct and initialize it immediately. Which code correctly combines pvPortMalloc and initialization?

AMyStruct *p; pvPortMalloc(sizeof(MyStruct)); *p = 0;

BMyStruct p = pvPortMalloc(sizeof(MyStruct));

CMyStruct *p = malloc(sizeof(MyStruct)); *p = {0};

DMyStruct *p = pvPortMalloc(sizeof(MyStruct)); if(p) *p = (MyStruct){0};

Step-by-Step Solution

Solution:

Step 1: Allocate memory and check pointer
MyStruct *p = pvPortMalloc(sizeof(MyStruct)); if(p) *p = (MyStruct){0}; allocates memory for struct and checks if pointer is not NULL.
Step 2: Initialize struct using compound literal
It initializes the struct to zero using compound literal syntax safely.
Final Answer:
MyStruct *p = pvPortMalloc(sizeof(MyStruct)); if(p) *p = (MyStruct){0}; -> Option D
Quick Check:
Allocate and initialize safely with pointer check [OK]

Quick Trick: Check pointer before initializing allocated memory [OK]

Common Mistakes:

Assigning pvPortMalloc result to struct variable
Using standard malloc instead of pvPortMalloc
Dereferencing uninitialized pointer

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More FreeRTOS Quizzes

In a FreeRTOS application, you want to allocate memory for a struct and initialize it immediately. Which code correctly combines pvPortMalloc and initialization?

Step 1: Allocate memory and check pointer

Step 2: Initialize struct using compound literal

Final Answer:

Quick Check:

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