io.joshworks.snappy.maven.tools.SignalUtils Maven / Gradle / Ivy

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/*
 * Copyright 2012-2014 the original author or authors.
 *
 * Licensed 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
 *
 *      http://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 io.joshworks.snappy.maven.tools;

import sun.misc.Signal;
import sun.misc.SignalHandler;

/**
 * Utilities for working with signal handling.
 *
 * @author Dave Syer
 * @since 1.1.0
 */
@SuppressWarnings("restriction")
@UsesUnsafeJava
public final class SignalUtils {

    private static final Signal SIG_INT = new Signal("INT");

    private SignalUtils() {
    }

    /**
     * Handle {@literal INT} signals by calling the specified {@link Runnable}.
     *
     * @param runnable the runnable to call on SIGINT.
     */
    public static void attachSignalHandler(final Runnable runnable) {
        Signal.handle(SIG_INT, new SignalHandler() {
            @Override
            public void handle(Signal signal) {
                runnable.run();
            }
        });
    }

}