org.jau.lang.UnsafeUtil Class Reference

Utility methods allowing easy access to certain sun.misc.Unsafe functionality. More...

Collaboration diagram for org.jau.lang.UnsafeUtil:

Static Public Member Functions
static boolean	hasInvokeCleaner ()
	Returns true if sun.misc.Unsafe.invokeCleaner(java.nio.ByteBuffer) is available and has not caused an exception.
static boolean	invokeCleaner (final ByteBuffer bb)
	Access to sun.misc.Unsafe.invokeCleaner(java.nio.ByteBuffer).
static boolean	hasIllegalAccessLoggerAccess ()
	Returns true if access to jdk.internal.module.IllegalAcessLogger's logger field is available and has not caused an exception.
static< T > T	doWithoutIllegalAccessLogger (final PrivilegedAction< T > action) throws RuntimeException
	Issue the given user action while jdk.internal.module.IllegalAcessLogger's logger has been temporarily disabled.

Protected Member Functions
	UnsafeUtil ()

Detailed Description

Utility methods allowing easy access to certain sun.misc.Unsafe functionality.

Definition at line 41 of file UnsafeUtil.java.

Constructor & Destructor Documentation

UnsafeUtil()

org.jau.lang.UnsafeUtil.UnsafeUtil ( )

protected

Definition at line 48 of file UnsafeUtil.java.

Member Function Documentation

doWithoutIllegalAccessLogger()

static< T > T org.jau.lang.UnsafeUtil.doWithoutIllegalAccessLogger ( final PrivilegedAction< T > action ) throws RuntimeException

static

Issue the given user action while jdk.internal.module.IllegalAcessLogger's logger has been temporarily disabled.

The caller shall place this call into their own AccessController#doPrivileged(PrivilegedAction) block.

In case the runtime is not PlatformProps#JAVA_9 or the logger is not accessible or disabling caused an exception, the user action is just executed w/o temporary logger modifications.

Parameters

action

the user action task

Exceptions

RuntimeException

is thrown for a caught Throwable while executing the user action

See also

hasIllegalAccessLoggerAccess()

Definition at line 181 of file UnsafeUtil.java.

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hasIllegalAccessLoggerAccess()

static boolean org.jau.lang.UnsafeUtil.hasIllegalAccessLoggerAccess ( )

static

Returns true if access to jdk.internal.module.IllegalAcessLogger's logger field is available and has not caused an exception.

See also

#doWithoutIllegalAccessLogger(PrivilegedAction)

Definition at line 166 of file UnsafeUtil.java.

hasInvokeCleaner()

static boolean org.jau.lang.UnsafeUtil.hasInvokeCleaner ( )

static

Returns true if sun.misc.Unsafe.invokeCleaner(java.nio.ByteBuffer) is available and has not caused an exception.

See also

invokeCleaner(ByteBuffer)

Definition at line 134 of file UnsafeUtil.java.

invokeCleaner()

static boolean org.jau.lang.UnsafeUtil.invokeCleaner ( final ByteBuffer bb )

static

Access to sun.misc.Unsafe.invokeCleaner(java.nio.ByteBuffer).

If b is an direct NIO buffer, i.e sun.nio.ch.DirectBuffer, calls it's sun.misc.Cleaner instance clean() method once.

Returns

true if successful, otherwise false.

See also

hasInvokeCleaner()

Definition at line 145 of file UnsafeUtil.java.

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The documentation for this class was generated from the following file:

• java_base/org/jau/lang/UnsafeUtil.java