Long description

The 4 line of code for figure a are as follows.

while open parenthesis TRUE close parenthesis open curly bracket

get under score next under score request open parenthesis ampersand buf close parenthesis semi colon

handoff under score work open parenthesis ampersand buf close parenthesis semi colon

close curly bracket

The 7 lines of code for figure open parenthesis b close parenthesis are as follow

while open parenthesis TRUE close parenthesis open curly bracket

wait under score for under score work open parenthesis &buf close parenthesis

look under score for under score page under score in under score cache open parenthesis ampersand buf coma ampersand page close parenthesis semi colon

if open parenthesis page under score not under score in under score cache open parenthesis ampersand page close parenthesis close parenthesis

read under score page under score from under score disk open parenthesis ampersand buf coma ampersand page close parenthesis semi colon

return under score page open parenthesis ampersand page close parenthesis semi colon

close curly bracket