# Package org.apache.tomcat.util.threads

- Interface Summary
  Interface | Description
  --- | ---
  ResizableExecutor |
  ThreadPoolExecutor.RejectedExecutionHandler |

- Class Summary
  Class | Description
  --- | ---
  Constants | Static constants for this package.
  LimitLatch | Shared latch that allows the latch to be acquired a limited number of times after which all subsequent requests to acquire the latch will be placed in a FIFO queue until one of the shares is returned.
  TaskQueue | As task queue specifically designed to run with a thread pool executor.
  TaskThread | A Thread implementation that records the time at which it was created.
  TaskThreadFactory | Simple task thread factory to use to create threads for an executor implementation.
  ThreadPoolExecutor | An `ExecutorService` that executes each submitted task using one of possibly several pooled threads, normally configured using `Executors` factory methods.
  ThreadPoolExecutor.AbortPolicy | A handler for rejected tasks that throws a `RejectedExecutionException`.
  ThreadPoolExecutor.CallerRunsPolicy | A handler for rejected tasks that runs the rejected task directly in the calling thread of the `execute` method, unless the executor has been shut down, in which case the task is discarded.
  ThreadPoolExecutor.DiscardOldestPolicy | A handler for rejected tasks that discards the oldest unhandled request and then retries `execute`, unless the executor is shut down, in which case the task is discarded.
  ThreadPoolExecutor.DiscardPolicy | A handler for rejected tasks that silently discards the rejected task.

- Exception Summary
  Exception | Description
  --- | ---
  StopPooledThreadException | A custom `RuntimeException` thrown by the `ThreadPoolExecutor` to signal that the thread should be disposed of.

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