Câu hỏi phỏng vấn C#
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What is the volatil...

Câu trả lời

The volatile keyword in C# is used to indicate that a variable might be modified by multiple threads that are executing asynchronously. When a variable is declared as volatile, the compiler ensures that all reads and writes to that variable are performed directly on the main memory, rather than using the CPU's cache.

Here are the main purposes of the volatile keyword:

Preventing Compiler Optimizations

The compiler might perform certain optimizations, such as caching the value of a variable in a register or reordering memory accesses. When a variable is marked as volatile, the compiler is prevented from performing these optimizations, ensuring that the variable is always read from and written to the main memory.

Synchronizing Access to Shared Variables

In a multi-threaded environment, shared variables can be accessed and modified by multiple threads simultaneously. If a variable is not properly synchronized, it can lead to race conditions and...

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