What are memory barriers in computer science?
Memory barriers are synchronization mechanisms that prevent certain types of memory operations from being reordered by the compiler or CPU.
Why are they important in multi-threading?
They ensure that memory operations occur in the correct order, preventing issues like stale data and race conditions.
Can you give an example of how a memory barrier works?
Sure! For instance, in a multi-threaded program, a memory barrier can ensure that a write operation in one thread is visible to another thread before it reads the data.
What happens if memory barriers are not used?
Without memory barriers, threads may see inconsistent data, leading to unpredictable behavior and bugs in the program.
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