org.apache.spark.util

Class SignalUtils

java.lang.Object

org.apache.spark.util.SignalUtils

public class SignalUtils
extends java.lang.Object

Contains utilities for working with posix signals.

Constructor Summary

Constructors

Constructor and Description
SignalUtils()

Method Summary

Methods

Modifier and Type	Method and Description
protected static void	initializeLogIfNecessary(boolean isInterpreter)
protected static boolean	isTraceEnabled()
protected static org.slf4j.Logger	log()
protected static void	logDebug(scala.Function0<java.lang.String> msg)
protected static void	logDebug(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static void	logError(scala.Function0<java.lang.String> msg)
protected static void	logError(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static void	logInfo(scala.Function0<java.lang.String> msg)
protected static void	logInfo(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static java.lang.String	logName()
protected static void	logTrace(scala.Function0<java.lang.String> msg)
protected static void	logTrace(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
protected static void	logWarning(scala.Function0<java.lang.String> msg)
protected static void	logWarning(scala.Function0<java.lang.String> msg, java.lang.Throwable throwable)
static void	register(java.lang.String signal, scala.Function0<java.lang.Object> action) Adds an action to be run when a given signal is received by this process.
static void	registerLogger(org.slf4j.Logger log) Register a signal handler to log signals on UNIX-like systems.

Methods inherited from class java.lang.Object

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

Constructor Detail

SignalUtils

public SignalUtils()

Method Detail

registerLogger

public static void registerLogger(org.slf4j.Logger log)

Register a signal handler to log signals on UNIX-like systems.

register

public static void register(java.lang.String signal,
            scala.Function0<java.lang.Object> action)

Adds an action to be run when a given signal is received by this process.

Note that signals are only supported on unix-like operating systems and work on a best-effort basis: if a signal is not available or cannot be intercepted, only a warning is emitted.

All actions for a given signal are run in a separate thread.

Parameters:

signal - (undocumented)

action - (undocumented)

logName

protected static java.lang.String logName()

log

protected static org.slf4j.Logger log()

logInfo

protected static void logInfo(scala.Function0<java.lang.String> msg)

logDebug

protected static void logDebug(scala.Function0<java.lang.String> msg)

logTrace

protected static void logTrace(scala.Function0<java.lang.String> msg)

logWarning

protected static void logWarning(scala.Function0<java.lang.String> msg)

logError

protected static void logError(scala.Function0<java.lang.String> msg)

logInfo

protected static void logInfo(scala.Function0<java.lang.String> msg,
           java.lang.Throwable throwable)

logDebug

protected static void logDebug(scala.Function0<java.lang.String> msg,
            java.lang.Throwable throwable)

logTrace

protected static void logTrace(scala.Function0<java.lang.String> msg,
            java.lang.Throwable throwable)

logWarning

protected static void logWarning(scala.Function0<java.lang.String> msg,
              java.lang.Throwable throwable)

logError

protected static void logError(scala.Function0<java.lang.String> msg,
            java.lang.Throwable throwable)

isTraceEnabled

protected static boolean isTraceEnabled()

initializeLogIfNecessary

protected static void initializeLogIfNecessary(boolean isInterpreter)