5b41f3d25b
Motiviation: We need to ensure we only register the methods for unix-native-common once as otherwise it may have strange side-effects. Modifications: - Add extra method that should be called to signal that we need to register the methods. The registration will only happen once. - Adjust code to make use of it. Result: No more problems due incorrect registration of these methods.
76 lines
2.3 KiB
Java
76 lines
2.3 KiB
Java
/*
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* Copyright 2014 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.unix;
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import io.netty.util.internal.UnstableApi;
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import java.util.concurrent.atomic.AtomicBoolean;
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/**
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* Tells if <a href="https://netty.io/wiki/native-transports.html">{@code netty-transport-native-unix}</a> is
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* supported.
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*/
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public final class Unix {
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private static final AtomicBoolean registered = new AtomicBoolean();
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/**
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* Internal method... Should never be called from the user.
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*
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* @param registerTask
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*/
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@UnstableApi
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public static void registerInternal(Runnable registerTask) {
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if (registered.compareAndSet(false, true)) {
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registerTask.run();
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Socket.initialize();
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}
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}
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/**
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* Returns {@code true} if and only if the <a href="https://netty.io/wiki/native-transports.html">{@code
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* netty_transport_native_unix}</a> is available.
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*/
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@Deprecated
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public static boolean isAvailable() {
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return false;
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}
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/**
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* Ensure that <a href="https://netty.io/wiki/native-transports.html">{@code netty_transport_native_unix}</a> is
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* available.
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*
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* @throws UnsatisfiedLinkError if unavailable
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*/
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@Deprecated
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public static void ensureAvailability() {
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throw new UnsupportedOperationException();
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}
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/**
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* Returns the cause of unavailability of <a href="https://netty.io/wiki/native-transports.html">
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* {@code netty_transport_native_unix}</a>.
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*
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* @return the cause if unavailable. {@code null} if available.
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*/
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@Deprecated
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public static Throwable unavailabilityCause() {
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return new UnsupportedOperationException();
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}
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private Unix() {
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}
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}
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