What is the difference between lock, Monitor, and SemaphoreSlim?

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ICSM Computer · Answer

Answer:
lock (syntactic sugar for Monitor.Enter/Exit): Simple mutual exclusion for single-threaded access.Monitor: Offers TryEnter, timeout, and Pulse/Wait methods.SemaphoreSlim: Lightweight, used to limit concurrency (e.g., allow N threads at a time).
lock (_lockObj) { /* critical section */ }
// or if (Monitor.TryEnter(_lockObj, TimeSpan.FromSeconds(1))) {
   try { /* critical section */ } finally { Monitor.Exit(_lockObj); }
}
Use lock for simplicity, Monitor for more control, and
SemaphoreSlim for async or limited-thread scenarios.

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What is the difference between lock, Monitor, and SemaphoreSlim?

ICSM Computer

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