Package org.apache.hadoop.util

Class ThreadUtil

java.lang.Object

org.apache.hadoop.util.ThreadUtil

@Evolving
public class ThreadUtil
extends java.lang.Object

Constructor Summary

Constructors

Constructor	Description
ThreadUtil()

Method Summary

Modifier and Type	Method	Description
static java.io.InputStream	getResourceAsStream(java.lang.ClassLoader cl, java.lang.String resourceName)	Convenience method that returns a resource as inputstream from the classpath using given classloader.
static java.io.InputStream	getResourceAsStream(java.lang.String resourceName)	Convenience method that returns a resource as inputstream from the classpath.
static void	joinUninterruptibly(java.lang.Thread toJoin)	Join a thread as uninterruptible.
static void	sleepAtLeastIgnoreInterrupts(long millis)	Cause the current thread to sleep as close as possible to the provided number of milliseconds.

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadUtil

public ThreadUtil()

Method Detail

sleepAtLeastIgnoreInterrupts

public static void sleepAtLeastIgnoreInterrupts(long millis)

Cause the current thread to sleep as close as possible to the provided number of milliseconds. This method will log and ignore any InterruptedException encountered.

Parameters:

millis - the number of milliseconds for the current thread to sleep

joinUninterruptibly

public static void joinUninterruptibly(java.lang.Thread toJoin)

Join a thread as uninterruptible. The call continues to block until the result is available even when the caller thread is interrupted. The method will log any InterruptedException then will re-interrupt the thread.

Parameters:

toJoin - the thread to Join on.

getResourceAsStream

public static java.io.InputStream getResourceAsStream(java.lang.String resourceName)
                                               throws java.io.IOException

Convenience method that returns a resource as inputstream from the classpath.

Uses the Thread's context classloader to load resource.

Parameters:

resourceName - resource to retrieve.

Returns:

inputstream with the resource.

Throws:

java.io.IOException - thrown if resource cannot be loaded

getResourceAsStream

public static java.io.InputStream getResourceAsStream(java.lang.ClassLoader cl,
                                                      java.lang.String resourceName)
                                               throws java.io.IOException

Convenience method that returns a resource as inputstream from the classpath using given classloader.

Parameters:

cl - ClassLoader to be used to retrieve resource.

resourceName - resource to retrieve.

Returns:

inputstream with the resource.

Throws:

java.io.IOException - thrown if resource cannot be loaded