Task: Allocating and Deallocating Memory

Navigate to the labs/lab-04/tasks/alloc-size/support directory.

1. Use pmap to analyze the process address space for ALLOC_SIZE_KB initialized to 256. Notice the new memory areas and the difference between the use of mmap syscall and brk syscall.

2. Use valgrind on the resulting executable, and notice there are memory leaks. They are quite obvious due to the lack of proper freeing. Solve the leaks.

3. Use valgrind on different executables in the system (in /bin/, /usr/bin/) and see if they have memory leaks.

If you’re having difficulties solving this exercise, go through this reading material.