test/jdk/java/lang/ProcessBuilder/ProcessReaperCCL.java - master - niceSOFT/openjdk21

test/jdk/java/lang/ProcessBuilder/ProcessReaperCCL.java

65 строк2 KB

Thomas Stuefe

8284165: Add pid to process reaper thread name

05 апр 2022, 06:39

05 апр 2022, 06:399561b5e

/*
 * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 8269488
 * @summary verify that Process Reaper threads have a null CCL
 * @run testng ProcessReaperCCL
 */

import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.List;
import java.util.concurrent.CompletableFuture;

import org.testng.Assert;
import org.testng.annotations.Test;


public class ProcessReaperCCL {

    @Test
    static void test() throws Exception {
        // create a class loader
        File dir = new File(".");
        URL[] urls = new URL[] {dir.toURI().toURL()};
        ClassLoader cl = new URLClassLoader(urls);
        Thread.currentThread().setContextClassLoader(cl);

        // Invoke a subprocess with processBuilder
        ProcessBuilder pb = new ProcessBuilder(List.of("echo", "abc", "xyz"));
        Process p = pb.start();
        CompletableFuture<Process> cf = p.onExit();
        int exitValue = cf.get().exitValue();
        Assert.assertEquals(exitValue, 0, "error exit value");

        // Verify all "Process Reaper" threads have a null CCL
        for (Thread th : Thread.getAllStackTraces().keySet()) {
            if (th.getName().startsWith("process reaper")) {
                Assert.assertEquals(th.getContextClassLoader(), null, "CCL not null");
            }
        }
    }
}