What happens next once you click on the A thread:

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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Consider the below mutex state:
tk
# mutual exclusion
-2
mutex = Semaphore(1)
1
counter = 0
Run initialization
Add row
(CB)e
Run
mutex.wait()
Queue
Run
# critical section
Queue
Run
counter += 1
Queue
mutex.signal()
Create thread
Add row
Run Random Run Stop Step Random Step
What happens next once you click on the A thread:
Either thread B or thread C will enter the critical section.
Both threads B and C will enter the critical section at the same time
O Neither thread B nor thread C will enter the critical section.
Transcribed Image Text:Consider the below mutex state: tk # mutual exclusion -2 mutex = Semaphore(1) 1 counter = 0 Run initialization Add row (CB)e Run mutex.wait() Queue Run # critical section Queue Run counter += 1 Queue mutex.signal() Create thread Add row Run Random Run Stop Step Random Step What happens next once you click on the A thread: Either thread B or thread C will enter the critical section. Both threads B and C will enter the critical section at the same time O Neither thread B nor thread C will enter the critical section.
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