jdk

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/*
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 * Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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import java.io.File;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import jdk.test.lib.Utils;
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import jdk.test.lib.apps.LingeredApp;
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import jdk.test.lib.JDKToolLauncher;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.SA.SATestUtils;
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import jtreg.SkippedException;
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/**
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 * @test
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 * @bug 8240990
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 * @summary Test clhsdb dumpclass command
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 * @requires vm.hasSA
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 * @library /test/lib
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 * @run driver ClhsdbDumpclass
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 */
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public class ClhsdbDumpclass {
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    static final String APP_DOT_CLASSNAME = LingeredApp.class.getName();
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    static final String APP_SLASH_CLASSNAME = APP_DOT_CLASSNAME.replace('.', '/');
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    public static void main(String[] args) throws Exception {
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        if (SATestUtils.needsPrivileges()) {
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            // This test will create a file as root that cannot be easily deleted, so don't run it.
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            throw new SkippedException("Cannot run this test on OSX if adding privileges is required.");
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        }
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        System.out.println("Starting ClhsdbDumpclass test");
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        LingeredApp theApp = null;
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        try {
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            ClhsdbLauncher test = new ClhsdbLauncher();
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            theApp = LingeredApp.startApp();
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            System.out.println("Started LingeredApp with pid " + theApp.getPid());
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            // Run "dumpclass jdk/test/lib/apps/LingeredApp"
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            String cmd = "dumpclass " + APP_DOT_CLASSNAME;
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            List<String> cmds = List.of(cmd);
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            Map<String, List<String>> unExpStrMap = new HashMap<>();
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            unExpStrMap.put(cmd, List.of("class not found"));
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            test.run(theApp.getPid(), cmds, null, unExpStrMap);
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            File classFile = new File(APP_SLASH_CLASSNAME + ".class");
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            if (!classFile.exists()) {
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                throw new RuntimeException("FAILED: Cannot find dumped .class file");
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            }
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            // Run javap on the generated class file to make sure it's valid.
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            JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("javap");
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            launcher.addVMArgs(Utils.getTestJavaOpts());
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            // Let javap print additional info, e.g., StackMapTable
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            launcher.addToolArg("-verbose");
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            launcher.addToolArg(classFile.toString());
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            System.out.println("> javap " + classFile.toString());
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            List<String> cmdStringList = Arrays.asList(launcher.getCommand());
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            ProcessBuilder pb = new ProcessBuilder(cmdStringList);
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            Process javap = pb.start();
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            OutputAnalyzer out = new OutputAnalyzer(javap);
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            javap.waitFor();
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            System.out.println(out.getStdout());
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            System.err.println(out.getStderr());
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            out.shouldHaveExitValue(0);
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            out.shouldMatch("public class " + APP_DOT_CLASSNAME);
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            // StackMapTable might not be generated for a class
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            // containing only methods with sequential control flows.
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            // But the class used here (LingeredApp) is not such a case.
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            out.shouldContain("StackMapTable:");
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            out.shouldContain("BootstrapMethods:");
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            out.shouldNotContain("Error:");
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        } catch (SkippedException se) {
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            throw se;
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        } catch (Exception ex) {
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            throw new RuntimeException("Test ERROR " + ex, ex);
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        } finally {
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            LingeredApp.stopApp(theApp);
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        }
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        System.out.println("Test PASSED");
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    }
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}
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