Question 1:The following program consists of 3 concurrent processes and 3 binary semaphores. The semaphores are initialized as S0 = 1, S1 = 0, S2 = 0. Process PO Process P1 Process P2 while(true) { wait(SO); print '0'; signal(S1); signal(S2); wait(S1); signal(SO); wait(S2); signal(S0); What is the maximum number of times that PO can print "0"?

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
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Question 1: The following program consists of 3 concurrent processes and 3 binary
semaphores. The semaphores are initialized as S0 = 1, S1 = 0, S2 = 0.
Process PO
Process P1
Process P2
while(true)
{
wait(S0);
print '0';
signal(S1);
signal(S2);
}
wait(S1);
signal(S0);
wait(S2);
signal(SO);
What is the maximum number of times that PO can print "O"?
Transcribed Image Text:Question 1: The following program consists of 3 concurrent processes and 3 binary semaphores. The semaphores are initialized as S0 = 1, S1 = 0, S2 = 0. Process PO Process P1 Process P2 while(true) { wait(S0); print '0'; signal(S1); signal(S2); } wait(S1); signal(S0); wait(S2); signal(SO); What is the maximum number of times that PO can print "O"?
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