de.schlichtherle.io.LegacyExecutor Maven / Gradle / Ivy

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TrueZIP is a Java based Virtual File System (VFS) to enable transparent, multi-threaded read/write access to archive files (ZIP, TAR etc.) as if they were directories. Archive files may be arbitrarily nested and the nesting level is only limited by heap and file system size.

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/*
 * Copyright (C) 2006-2010 Schlichtherle IT Services
 *
 * 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 de.schlichtherle.io;

/**
 * @author Christian Schlichtherle
 * @version $Id: LegacyExecutor.java,v 1.5 2010/09/21 14:06:45 christian_schlichtherle Exp $
 * @since TrueZIP 6.4
 */
final class LegacyExecutor implements Executor {
    private final String threadName;

    /**
     * Constructs a new {@code LegacyExecutor}.
     * This constructor is public in order to enable reflective access
     * (currently unused)!
     */
    public LegacyExecutor(final String threadName) {
        assert threadName != null;
        this.threadName = threadName;
    }

    public Task submit(final Runnable target) {
        assert target != null;
        return new LegacyTask(target, threadName);
    }

    private static final class LegacyTask implements Task {
        private final Thread thread;

        private LegacyTask(final Runnable target, final String threadName) {
            assert target != null;
            assert threadName != null;
            thread = new Thread(target, threadName);
            thread.setDaemon(true);
            thread.start();
        }

        public void cancel() {
            thread.interrupt();
            while (true) {
                try {
                    thread.join();
                    break;
                } catch (InterruptedException ignored) {
                }
            }
        }
    }
}