Added in .NET 3.5 and .NET 4.0, respectively, the
SpinLock primitives are often useful, too. Their use is fairly specialized, so we’ll limit ourselves to a basic discussion.
The essential problem of various concurrency and synchronization problems boils down to simultaneous reader and writer accesses on a shared resource. Often, the presence of multiple readers is allowed, while writers should be protected from one another to prevent harm. Therefore, the classic monitor-based lock is often too coarse-grained because it can’t differentiate from reader and writer accesses.
ReaderWriterLockSlim accommodate for such scenarios. The latter was introduced in .NET ...