ThreadUtils.java

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/*
 * Autopsy Forensic Browser
 *
 * Copyright 2017 Basis Technology Corp.
 * Contact: carrier <at> sleuthkit <dot> org
 *
 * 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 org.sleuthkit.autopsy.coreutils;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;

/*
 * Concurrent programming utilities.
 */
final public class ThreadUtils {

    private static final long DEFAULT_TIMEOUT = 5;
    private static final TimeUnit DEFAULT_TIMEOUT_UNITS = TimeUnit.SECONDS;

    public static void shutDownTaskExecutor(ExecutorService executor) {
        executor.shutdown();
        boolean tasksCompleted = false;
        while (!tasksCompleted) {
            try {
                tasksCompleted = executor.awaitTermination(DEFAULT_TIMEOUT, DEFAULT_TIMEOUT_UNITS);
            } catch (InterruptedException ignored) {
                /*
                 * Ignore interrupts. The policy implemented by this method is
                 * an unconditional wait.
                 */
            }
        }
    }

    private ThreadUtils() {
    }
}