Most systems allow a program to allocate more memory to its address space during execution. Allocation...
Most systems allow a program to allocate more memory to its address space during execution. Allocation of data in the heap segments of programs is and example of such allocated memory. What is required to support dynamic memor allocation in the following schemes?
a. Contiguous memory allocation
b. Pure segmentation
c. Pure paging
Explain each of the above schemes and provide sources to back your answers.
Homework Answers
Contiguous-memory allocation:
- This schema requires relocation of the entire program,
- Explanation: Since there is no enough required space for the program to grow beyond it's allocated memory space, it may require relocation of entire program.
Pure segmentation:
- This schema requires relocation of the segment that needs to be extended,
- Explanation: Since there is no enough required space for the segment to grow beyond it's allocated memory space, it may require relocation of segment.
Pure paging:
- This schema requires incremental allocation of new pages
- Explanation: It is possible in this scheme without requiring relocation of the program's address space.
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