What's the role of a barrier in multi-threading? a) synchronize thread execution b) thread affinity c) distribute threads evenly d) ensure all threads reach a point
Understand the Problem
The question is asking about the function of a barrier in multi-threading environments, specifically which of the provided options correctly describes its role. A barrier in multi-threading is used to ensure that a group of threads reach a certain point in their execution before any of them can proceed further, making option d) the correct choice.
Answer
Ensure all threads reach a point.
The final answer is ensure all threads reach a point.
Answer for screen readers
The final answer is ensure all threads reach a point.
More Information
In multithreading, a barrier ensures that threads wait for each other to reach a synchronization point. No thread can proceed past the barrier until all threads have reached it, which helps in coordinating work that must be synchronized across threads.
Tips
A common mistake is confusing barriers with other synchronization tools like locks or semaphores, which have different purposes such as managing resource access.
Sources
- Barrier Synchronization in Threads | by Jay Desai - Medium - medium.com
- Barrier (computer science) - Wikipedia - en.wikipedia.org
- Barrier Synchronization - (Parallel and Distributed Computing) - fiveable.me
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