Package org.apache.catalina.core

# Class ThreadLocalLeakPreventionListener

java.lang.Object
org.apache.catalina.core.ThreadLocalLeakPreventionListener

All Implemented Interfaces:
  `ContainerListener`, `LifecycleListener`

public class ThreadLocalLeakPreventionListener extends Object implements LifecycleListener, ContainerListener
A `LifecycleListener` that triggers the renewal of threads in Executor pools when a `Context` is being stopped to avoid thread-local related memory leaks.

Note : active threads will be renewed one by one when they come back to the pool after executing their task, see `ThreadPoolExecutor`.afterExecute().

This listener must only be nested within `Server` elements.

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected static final StringManager`
  `sm`
  The string manager for this package.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ThreadLocalLeakPreventionListener()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `containerEvent(ContainerEvent event)`
  Acknowledge the occurrence of the specified event.
  `void`
  `lifecycleEvent(LifecycleEvent event)`
  Listens for `LifecycleEvent` for the start of the `Server` to initialize itself and then for after_stop events of each `Context`.
  `protected void`
  `processContainerAddChild(Container parent, Container child)`
  `protected void`
  `processContainerRemoveChild(Container parent, Container child)`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### sm

    protected static final StringManager sm
    The string manager for this package.

- ## Constructor Details

  - ### ThreadLocalLeakPreventionListener

    public ThreadLocalLeakPreventionListener()

- ## Method Details

  - ### lifecycleEvent

    public void lifecycleEvent(LifecycleEvent event)
    Listens for `LifecycleEvent` for the start of the `Server` to initialize itself and then for after_stop events of each `Context`.
    Specified by:
      `lifecycleEvent` in interface `LifecycleListener`
    Parameters:
      `event` - LifecycleEvent that has occurred

  - ### containerEvent

    public void containerEvent(ContainerEvent event)
    Description copied from interface: `ContainerListener`
    Acknowledge the occurrence of the specified event.
    Specified by:
      `containerEvent` in interface `ContainerListener`
    Parameters:
      `event` - ContainerEvent that has occurred

  - ### processContainerAddChild

    protected void processContainerAddChild(Container parent, Container child)

  - ### processContainerRemoveChild

    protected void processContainerRemoveChild(Container parent, Container child)