| Name | Description | Type | Package | Framework |
| AbstractEventExecutor | Abstract base class for EventExecutor implementations. | Class | io.netty.util.concurrent | Netty |
| AbstractEventExecutorGroup | Abstract base class for EventExecutorGroup implementations. | Class | io.netty.util.concurrent | Netty |
| AbstractFuture | Abstract Future implementation which does not allow for cancellation. | Class | io.netty.util.concurrent | Netty |
| AbstractScheduledEventExecutor | Abstract base class for EventExecutors that want to support scheduling. | Class | io.netty.util.concurrent | Netty |
| BlockingOperationException | An IllegalStateException which is raised when a user performed a blocking operationwhen the user is in an event loop thread. | Class | io.netty.util.concurrent | Netty |
| CompleteFuture | A skeletal Future implementation which represents a Future which has been completed already. | Class | io.netty.util.concurrent | Netty |
| DefaultEventExecutor | Class | io.netty.util.concurrent | Netty | |
| DefaultEventExecutorGroup | Default implementation of MultithreadEventExecutorGroup which will use DefaultEventExecutorinstances to handle the tasks. | Class | io.netty.util.concurrent | Netty |
| DefaultExecutorServiceFactory | An implementation of an ExecutorServiceFactory that creates a new ForkJoinPool on eachcall to newExecutorService(int). | Class | io.netty.util.concurrent | Netty |
| DefaultProgressivePromise | Class | io.netty.util.concurrent | Netty | |
| DefaultPromise | Class | io.netty.util.concurrent | Netty | |
| DefaultThreadFactory | A ThreadFactory implementation with a simple naming rule. | Class | io.netty.util.concurrent | Netty |
| EventExecutor | The EventExecutor is a special EventExecutorGroup which comeswith some handy methods to see if a Thread is executed in a event loop. | Interface | io.netty.util.concurrent | Netty |
| EventExecutorGroup | The EventExecutorGroup is responsible for providing the EventExecutor's to usevia its next() method. | Interface | io.netty.util.concurrent | Netty |
| ExecutorServiceFactory | An object that creates new ExecutorService on demand. | Interface | io.netty.util.concurrent | Netty |
| FailedFuture | The CompleteFuture which is failed already. | Class | io.netty.util.concurrent | Netty |
| FastThreadLocal | A special variant of ThreadLocal that yields higher access performance when accessed from aFastThreadLocalThread. | Class | io.netty.util.concurrent | Netty |
| FastThreadLocalAccess | Netty's Thread implementations implement this interface to provide fast access to FastThreadLocalSee Also:FastThreadLocalThread | Interface | io.netty.util.concurrent | Netty |
| FastThreadLocalThread | A special Thread that provides fast access to FastThreadLocal variables. | Class | io.netty.util.concurrent | Netty |
| Future | The result of an asynchronous operation. | Interface | io.netty.util.concurrent | Netty |
| FutureListener | A subtype of GenericFutureListener that hides type parameter for convenience. | Interface | io.netty.util.concurrent | Netty |
| GenericFutureListener | Listens to the result of a Future. | Interface | io.netty.util.concurrent | Netty |
| GenericProgressiveFutureListener | Interface | io.netty.util.concurrent | Netty | |
| GlobalEventExecutor | Single-thread singleton EventExecutor. | Class | io.netty.util.concurrent | Netty |
| ImmediateEventExecutor | AbstractEventExecutor which execute tasks in the callers thread. | Class | io.netty.util.concurrent | Netty |
| ImmediateExecutor | Executor which execute tasks in the callers thread. | Class | io.netty.util.concurrent | Netty |
| MultithreadEventExecutorGroup | Class | io.netty.util.concurrent | Netty | |
| PausableEventExecutor | Interface | io.netty.util.concurrent | Netty | |
| ProgressiveFuture | A Future which is used to indicate the progress of an operation. | Interface | io.netty.util.concurrent | Netty |
| ProgressivePromise | Special ProgressiveFuture which is writable. | Interface | io.netty.util.concurrent | Netty |
| Promise | Special Future which is writable. | Interface | io.netty.util.concurrent | Netty |
| PromiseAggregator | GenericFutureListener implementation which consolidates multiple Futuresinto one, by listening to individual Futures and producing an aggregated result | Class | io.netty.util.concurrent | Netty |
| PromiseNotifier | GenericFutureListener implementation which takes other Futuresand notifies them on completion. | Class | io.netty.util.concurrent | Netty |
| ScheduledFuture | The result of an scheduled asynchronous operation. | Interface | io.netty.util.concurrent | Netty |
| SingleThreadEventExecutor | Abstract base class for EventExecutor's that execute all its submitted tasks in a single thread. | Class | io.netty.util.concurrent | Netty |
| SucceededFuture | The CompleteFuture which is succeeded already. | Class | io.netty.util.concurrent | Netty |
| ThreadPerTaskExecutor | Class | io.netty.util.concurrent | Netty | |
| WrappedEventExecutor | A marker interface indicating that the EventExecutor is a wrapper aroundanother EventExecutor implementation. | Interface | io.netty.util.concurrent | Netty |