20.3 - Happens-Before Relationship
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Practice Questions
Test your understanding with targeted questions
What does the happens-before relationship ensure?
💡 Hint: Think about how threads share data.
What does a volatile variable guarantee?
💡 Hint: Remember how variables can be read and written among threads.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What guarantees visibility when one thread writes to a volatile variable and another thread reads it?
💡 Hint: Consider how volatile variables work.
True or False: Actions before a thread starts are not visible to the thread.
💡 Hint: Revisit the concept of thread start.
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Challenge Problems
Push your limits with advanced challenges
Describe how you would use multiple threads to count to 100 and ensure that the correct final count is printed. Include the use of synchronization to ensure visibility of the count.
💡 Hint: Think about thread safety with shared resources.
Given a situation where Thread A modifies a configuration variable while Thread B reads it, illustrate how to structure the code using volatile variables to guarantee current values are seen.
💡 Hint: Focus on the volatile keyword's behavior.
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