org.apache.hudi.org.apache.hbase.thirdparty.io.netty.channel.unix.Unix Maven / Gradle / Ivy
/*
* Copyright 2014 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package org.apache.hbase.thirdparty.io.netty.channel.unix;
import org.apache.hbase.thirdparty.io.netty.util.internal.ClassInitializerUtil;
import org.apache.hbase.thirdparty.io.netty.util.internal.UnstableApi;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.PortUnreachableException;
import java.nio.channels.ClosedChannelException;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* Tells if {@code netty-transport-native-unix} is
* supported.
*/
public final class Unix {
private static final AtomicBoolean registered = new AtomicBoolean();
static {
// Preload all classes that will be used in the OnLoad(...) function of JNI to eliminate the possiblity of a
// class-loader deadlock. This is a workaround for https://github.com/netty/netty/issues/11209.
// This needs to match all the classes that are loaded via NETTY_JNI_UTIL_LOAD_CLASS or looked up via
// NETTY_JNI_UTIL_FIND_CLASS.
ClassInitializerUtil.tryLoadClasses(Unix.class,
// netty_unix_errors
OutOfMemoryError.class, RuntimeException.class, ClosedChannelException.class,
IOException.class, PortUnreachableException.class,
// netty_unix_socket
DatagramSocketAddress.class, InetSocketAddress.class
);
}
/**
* Internal method... Should never be called from the user.
*
* @param registerTask
*/
@UnstableApi
public static void registerInternal(Runnable registerTask) {
if (registered.compareAndSet(false, true)) {
registerTask.run();
Socket.initialize();
}
}
/**
* Returns {@code true} if and only if the {@code
* netty_transport_native_unix} is available.
*/
@Deprecated
public static boolean isAvailable() {
return false;
}
/**
* Ensure that {@code netty_transport_native_unix} is
* available.
*
* @throws UnsatisfiedLinkError if unavailable
*/
@Deprecated
public static void ensureAvailability() {
throw new UnsupportedOperationException();
}
/**
* Returns the cause of unavailability of
* {@code netty_transport_native_unix}.
*
* @return the cause if unavailable. {@code null} if available.
*/
@Deprecated
public static Throwable unavailabilityCause() {
return new UnsupportedOperationException();
}
private Unix() {
}
}