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do {               flag[i] = true;  turn = i;  while (flag[j] && turn == j);                                 Critical section                               flag[i] = FALSE;   Remainder section             }  Three processes P1, P2, and P3 are sharing a resource R1 in a mutually exclusive manner. Using compare_and_swap instruction, show code for P1, P2, and P3 that shows the entry section and exit section (similar to the code shown in Question 1). Using this code, show a scenario if all three processes want to enter their critical sections.

do {               flag[i] = true;  turn = i;  while (flag[j] && turn == j);                                 Critical section                               flag[i] = FALSE;   Remainder section             }  Three processes P1, P2, and P3 are sharing a resource R1 in a mutually exclusive manner. Using compare_and_swap instruction, show code for P1, P2, and P3 that shows the entry section and exit section (similar to the code shown in Question 1). Using this code, show a scenario if all three processes want to enter their critical sections.

Database System Concepts
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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do { 
           
 flag[i] = true; 
turn = i; 
while (flag[j] && turn == j);
 
                             
Critical section                             
 flag[i] = FALSE;
 
Remainder section 
           } 


Three processes P1, P2, and P3 are sharing a resource R1 in a mutually exclusive manner. Using compare_and_swap instruction, show code for P1, P2, and P3 that shows the entry section and exit section (similar to the code shown in Question 1). Using this code, show a scenario if all three processes want to enter their critical sections.

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