Package io.netty.util

Class ThreadDeathWatcher

java.lang.Object

io.netty.util.ThreadDeathWatcher

@Deprecated
public final class ThreadDeathWatcher
extends Object

Deprecated.

will be removed in the next major release

Checks if a thread is alive periodically and runs a task when a thread dies.

This thread starts a daemon thread to check the state of the threads being watched and to invoke their associated Runnables. When there is no thread to watch (i.e. all threads are dead), the daemon thread will terminate itself, and a new daemon thread will be started again when a new watch is added.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	ThreadDeathWatcher.Entry	Deprecated.
private static final class	ThreadDeathWatcher.Watcher	Deprecated.

Field Summary

Fields

Modifier and Type	Field	Description
private static final InternalLogger	logger	Deprecated.
private static final Queue<ThreadDeathWatcher.Entry>	pendingEntries	Deprecated.
private static final AtomicBoolean	started	Deprecated.
(package private) static final ThreadFactory	threadFactory	Deprecated.
private static final ThreadDeathWatcher.Watcher	watcher	Deprecated.
private static Thread	watcherThread	Deprecated.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ThreadDeathWatcher()	Deprecated.

Method Summary

Modifier and Type	Method	Description
static boolean	awaitInactivity(long timeout, TimeUnit unit)	Deprecated. Waits until the thread of this watcher has no threads to watch and terminates itself.
private static void	schedule(Thread thread, Runnable task, boolean isWatch)	Deprecated.
static void	unwatch(Thread thread, Runnable task)	Deprecated. Cancels the task scheduled via watch(Thread, Runnable).
static void	watch(Thread thread, Runnable task)	Deprecated. Schedules the specified task to run when the specified thread dies.

Methods inherited from class java.lang.Object

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

Field Details

logger

private static final InternalLogger logger

Deprecated.

threadFactory

static final ThreadFactory threadFactory

Deprecated.

pendingEntries

private static final Queue<ThreadDeathWatcher.Entry> pendingEntries

Deprecated.

watcher

private static final ThreadDeathWatcher.Watcher watcher

Deprecated.

started

private static final AtomicBoolean started

Deprecated.

watcherThread

private static volatile Thread watcherThread

Deprecated.

Constructor Details

ThreadDeathWatcher

private ThreadDeathWatcher()

Deprecated.

Method Details

watch

public static void watch(Thread thread,
 Runnable task)

Deprecated.

Schedules the specified task to run when the specified thread dies.

Parameters:

thread - the Thread to watch

task - the Runnable to run when the thread dies

Throws:

IllegalArgumentException - if the specified thread is not alive

unwatch

public static void unwatch(Thread thread,
 Runnable task)

Deprecated.

Cancels the task scheduled via watch(Thread, Runnable).

schedule

private static void schedule(Thread thread,
 Runnable task,
 boolean isWatch)

Deprecated.

awaitInactivity

public static boolean awaitInactivity(long timeout,
 TimeUnit unit)
                               throws InterruptedException

Deprecated.

Waits until the thread of this watcher has no threads to watch and terminates itself. Because a new watcher thread will be started again on watch(Thread, Runnable), this operation is only useful when you want to ensure that the watcher thread is terminated after your application is shut down and there's no chance of calling watch(Thread, Runnable) afterwards.

Returns:

true if and only if the watcher thread has been terminated

Throws:

InterruptedException