Atomic`1 Provides atomic access to non-primitive data type.

 Lock Unified representation of monitor lock, semaphore lock, read lock, write lock or upgradeable read lock.

 ReaderWriterSpinLock Represents lightweight reader-writer lock based on spin loop.

 Timeout Helps to compute timeout for asynchronous operations.

 Atomic Exposes atomic operations for thread-safe scenarios.

 LockAcquisition Provides a set of methods to acquire different types of lock.

 ThreadPoolWorkItemFactory Represents factory of thread pool work items.

 IInterlockedOperations`1 Represents interlocked operations.