20.2.1 - Shared Variables and Main Memory
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Practice Questions
Test your understanding with targeted questions
What is the purpose of the volatile keyword?
💡 Hint: Think about how changes propagate across threads.
What occurs if two threads access a shared variable without synchronization?
💡 Hint: Consider what happens if both modify the variable simultaneously.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens if a variable is not marked volatile or synchronized in a multithreaded environment?
💡 Hint: Think about thread interaction with memory.
Is the following statement True or False? 'Using volatile ensures the atomicity of operations on a variable.'
💡 Hint: What do we mean by atomicity in operations?
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Challenge Problems
Push your limits with advanced challenges
You have a scenario where multiple threads are updating a shared counter and you notice inconsistent results. How would you design a solution using both volatile and synchronized blocks effectively?
💡 Hint: Consider how many threads will attempt to change the counter.
Design a simple producer-consumer problem using shared variables, highlighting where you would use synchronization.
💡 Hint: Think about how the buffer's access is controlled.
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