Runtime

Question 1

activation record

Answer 1

data structure used to hold information relevant to one method call

Question 2

static allocation

Answer 2

no heap or stack, all allocation records are in same static data area, one per method

Question 3

advantages of static allocation

Answer 3

fast access to names (no need to compute address of variable at runtime)
no overhead of stack/heap manipulation
no overhead of stack/heap manipulation

Question 4

disadvantages of static allocation

Answer 4

no recursion

no dynamic allocation

Question 5

Calling method for static allocation

Answer 5

copies each arg into the corresponding space in the called method’s AR
jump/link - jump to the first instruction of called method, put return address in return addr register

Question 6

Called method for static allocation

Answer 6

save regiters, initialize local data, copy return addr into return addr field

Question 7

stack allocation

Answer 7

each time a method called, new AR pushed onto stack, popped when method returns