ShutdownInterruptedMain.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 8154017
 * @library /lib/testlibrary
 * @build jdk.testlibrary.*
 * @summary Shutdown hooks are racing against shutdown sequence,
            if System.exit()-calling thread is interrupted
 * @run main ShutdownInterruptedMain exec
 */

import jdk.testlibrary.OutputAnalyzer;
import static jdk.testlibrary.ProcessTools.createJavaProcessBuilder;
import static jdk.testlibrary.ProcessTools.executeProcess;

public class ShutdownInterruptedMain {

    public static void main(String[] args) throws Throwable {
        if (args.length > 0) {
            ProcessBuilder pb = createJavaProcessBuilder(true, "ShutdownInterruptedMain");
            OutputAnalyzer output = executeProcess(pb);
            output.shouldContain("Shutdown Hook");
            output.shouldHaveExitValue(0);
            return;
        }

        Runtime.getRuntime().addShutdownHook(new Thread() {
            @Override
            public void run() {
                // Wait for the race to unfold:
                try {
                    Thread.sleep(5_000);
                } catch (InterruptedException e) {}
                System.out.println("Shutdown Hook");
                System.out.flush();
            }
        });
        Thread.currentThread().interrupt();
        System.exit(0);
    }
}