Process P0 and process P1 both want to access a shared datum, X, which is currently 0. P0 wants to add 2 to it, P1 wants to add 3 to it. Answer the following. a. Without synchronization, what value(s) can X result in? b. With synchronization, what value(s) can X result in? c. If another process, P2, was supposed to access X after P0 and P1 completed their stores, where P2 sets X to 5, would your answer to a or b change?
Process P0 and process P1 both want to access a shared datum, X, which is currently 0. P0 wants to add 2 to it, P1 wants to add 3 to it. Answer the following. a. Without synchronization, what value(s) can X result in? b. With synchronization, what value(s) can X result in? c. If another process, P2, was supposed to access X after P0 and P1 completed their stores, where P2 sets X to 5, would your answer to a or b change?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Process P0 and process P1 both want to access a shared datum, X, which is currently 0. P0 wants to add 2 to it, P1 wants to add 3 to it. Answer the following.
a. Without synchronization, what value(s) can X result in?
b. With synchronization, what value(s) can X result in?
c. If another process, P2, was supposed to access X after P0 and P1 completed their stores, where P2 sets X to 5, would your answer to a or b change?
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