Runtime Memory and Jumps

Question 1

How is memory allocation handled in linux?

Answer 1

Each process runs in its own lump of memory called a virtual address space.

Question 2

What are page tables used for?

Answer 2

Page tables map the virtual memory address to physical addresses.

Question 3

What are three advantages of Virtual Address Spaces?

Answer 3

Transparency, protection and isolation, flexible memory placement.

Question 4

What does the setjmp command do?

Answer 4

Saves the contents of the registers to a buffer.

Question 5

What does the longjmp command do?

Answer 5

Restores the content of the registers from a buffer.

Question 6

What is concurrency?

Answer 6

Multiple processes accessing one disk and sharing one CPU.

Question 7

What are the two techniques used to handle Concurrrency?

Answer 7

Time Slicing and Context Switching.

Question 8

What is parallelism?

Answer 8

Multiple processes running on separate CPUs.

Question 9

What are coroutines?

Answer 9

Concurrent but not parallel processed used to split a computationally heavy routine.