test/hotspot/jtreg/serviceability/sa/sadebugd/SADebugDTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 * 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.
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/**
 * @test
 * @bug 8163805 8224252
 * @summary Checks that the jshdb debugd utility sucessfully starts
 *          and tries to attach to a running process
 * @requires vm.hasSAandCanAttach
 * @requires os.family != "windows"
 * @modules java.base/jdk.internal.misc
 * @library /test/lib
 *
 * @run main/othervm SADebugDTest
 */

import java.util.concurrent.TimeUnit;

import jdk.test.lib.apps.LingeredApp;
import jdk.test.lib.JDKToolLauncher;
import static jdk.test.lib.process.ProcessTools.startProcess;

public class SADebugDTest {

    private static final String GOLDEN = "Debugger attached";

    public static void main(String[] args) throws Exception {
        LingeredApp app = null;

        try {
            app = LingeredApp.startApp();
            System.out.println("Started LingeredApp with pid " + app.getPid());

            JDKToolLauncher jhsdbLauncher = JDKToolLauncher.createUsingTestJDK("jhsdb");
            jhsdbLauncher.addToolArg("debugd");
            jhsdbLauncher.addToolArg("--pid");
            jhsdbLauncher.addToolArg(Long.toString(app.getPid()));
            ProcessBuilder pb = new ProcessBuilder(jhsdbLauncher.getCommand());

            // The startProcess will block untl the 'golden' string appears in either process' stdout or stderr
            // In case of timeout startProcess kills the debugd process
            Process debugd = startProcess("debugd", pb, null, l -> l.contains(GOLDEN), 0, TimeUnit.SECONDS);

            // If we are here, this means we have received the golden line and the test has passed
            // The debugd remains running, we have to kill it
            debugd.destroy();
            debugd.waitFor();
        } finally {
            LingeredApp.stopApp(app);
        }

    }

}