Namespace SixLabors.ImageSharp.Web.Synchronization

Classes

AsyncKeyLock<TKey>

Extension of the AsyncLock that enables fine-grained locking on a given key. Concurrent lock requests using different keys can execute simultaneously, while requests to lock using the same key will be forced to wait. This object is thread-safe and internally uses a pooling mechanism to minimize allocation of new locks.

AsyncKeyReaderWriterLock<TKey>

Extension of the AsyncReaderWriterLock that enables fine-grained locking on a given key. Concurrent write lock requests using different keys can execute simultaneously, while requests to lock using the same key will be forced to wait. This object is thread-safe and internally uses a pooling mechanism to minimize allocation of new locks.

AsyncLock

An asynchronous locker that uses an IDisposable pattern for releasing the lock.

AsyncReaderWriterLock

An asynchronous locker that provides read and write locking policies.

This is based on the following blog post: https://devblogs.microsoft.com/pfxteam/building-async-coordination-primitives-part-7-asyncreaderwriterlock/

RefCountedConcurrentDictionary<TKey, TValue>

Represents a thread-safe collection of reference-counted key/value pairs that can be accessed by multiple threads concurrently. Values that don't yet exist are automatically created using a caller supplied value factory method, and when their final refcount is released they are removed from the dictionary.