Package org.jboss.netty.util.internal

Class DetectionUtil

java.lang.Object

org.jboss.netty.util.internal.DetectionUtil

public final class DetectionUtil
extends Object

Utility that detects various properties specific to the current runtime environment, such as Java version and the availability of the sun.misc.Unsafe object.
You can disable the use of sun.misc.Unsafe if you specify the System property org.jboss.netty.tryUnsafe with value of false. Default is true.

Field Summary

Fields

Modifier and Type	Field	Description
private static final boolean	HAS_UNSAFE
private static final boolean	IS_WINDOWS
private static final int	JAVA_VERSION

Constructor Summary

Constructors

Modifier	Constructor	Description
private	DetectionUtil()

Method Summary

Modifier and Type	Method	Description
static boolean	hasUnsafe()
private static boolean	hasUnsafe(ClassLoader loader)
private static boolean	hasUnsafeField(Class<?> unsafeClass)
static boolean	isWindows()	Return true if the JVM is running on Windows
static int	javaVersion()
private static int	javaVersion0()

Methods inherited from class java.lang.Object

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

Field Details

JAVA_VERSION

private static final int JAVA_VERSION

HAS_UNSAFE

private static final boolean HAS_UNSAFE

IS_WINDOWS

private static final boolean IS_WINDOWS

Constructor Details

DetectionUtil

private DetectionUtil()

Method Details

isWindows

public static boolean isWindows()

Return true if the JVM is running on Windows

hasUnsafe

public static boolean hasUnsafe()

javaVersion

public static int javaVersion()

hasUnsafe

private static boolean hasUnsafe(ClassLoader loader)

hasUnsafeField

private static boolean hasUnsafeField(Class<?> unsafeClass)
                               throws PrivilegedActionException

Throws:

PrivilegedActionException

javaVersion0

private static int javaVersion0()