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2 cards from this section. Quick, good the night before a test.
What is the visibility problem in multithreading?
Think about how threads interact with shared resources.
What does 'flag' generally signify in concurrent programming?
Consider its boolean nature.
What main issue does the example in the section illustrate?
Consider what happens when changes are not propagated.
True or False: A spin loop will always see the updated value of a shared variable.
Reflect on how threads read shared variables.
Given a scenario with multiple threads reading and writing to a shared boolean flag, outline a comprehensive strategy to ensure proper visibility.
Consider how Java's memory model dictates visibility requirements.
Analyze the effect of introducing sleep before setting the flag in the primary thread. Will it help in achieving visibility?
Think about what guarantees visibility entails.
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