1 /*
  2  * Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  */
 23 
 24 import java.io.File;
 25 import java.util.Arrays;
 26 import java.util.HashMap;
 27 import java.util.List;
 28 import java.util.Map;
 29 
 30 import jdk.test.lib.Utils;
 31 import jdk.test.lib.apps.LingeredApp;
 32 import jdk.test.lib.JDKToolLauncher;
 33 import jdk.test.lib.process.OutputAnalyzer;
 34 import jdk.test.lib.SA.SATestUtils;
 35 import jtreg.SkippedException;
 36 
 37 /**
 38  * @test
 39  * @bug 8240990
 40  * @summary Test clhsdb dumpclass command
 41  * @requires vm.hasSA
 42  * @library /test/lib
 43  * @run driver ClhsdbDumpclass
 44  */
 45 
 46 public class ClhsdbDumpclass {
 47     static final String APP_DOT_CLASSNAME = LingeredApp.class.getName();
 48     static final String APP_SLASH_CLASSNAME = APP_DOT_CLASSNAME.replace('.', '/');
 49 
 50     public static void main(String[] args) throws Exception {
 51         if (SATestUtils.needsPrivileges()) {
 52             // This test will create a file as root that cannot be easily deleted, so don't run it.
 53             throw new SkippedException("Cannot run this test on OSX if adding privileges is required.");
 54         }
 55         System.out.println("Starting ClhsdbDumpclass test");
 56 
 57         LingeredApp theApp = null;
 58         try {
 59             ClhsdbLauncher test = new ClhsdbLauncher();
 60 
 61             theApp = LingeredApp.startApp();
 62             System.out.println("Started LingeredApp with pid " + theApp.getPid());
 63 
 64             // Run "dumpclass jdk/test/lib/apps/LingeredApp"
 65             String cmd = "dumpclass " + APP_DOT_CLASSNAME;
 66             List<String> cmds = List.of(cmd);
 67             Map<String, List<String>> unExpStrMap = new HashMap<>();
 68             unExpStrMap.put(cmd, List.of("class not found"));
 69             test.run(theApp.getPid(), cmds, null, unExpStrMap);
 70             File classFile = new File(APP_SLASH_CLASSNAME + ".class");
 71             if (!classFile.exists()) {
 72                 throw new RuntimeException("FAILED: Cannot find dumped .class file");
 73             }
 74 
 75             // Run javap on the generated class file to make sure it's valid.
 76             JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("javap");
 77             launcher.addVMArgs(Utils.getTestJavaOpts());
 78             // Let javap print additional info, e.g., StackMapTable
 79             launcher.addToolArg("-verbose");
 80             launcher.addToolArg(classFile.toString());
 81             System.out.println("> javap " + classFile.toString());
 82             List<String> cmdStringList = Arrays.asList(launcher.getCommand());
 83             ProcessBuilder pb = new ProcessBuilder(cmdStringList);
 84             Process javap = pb.start();
 85             OutputAnalyzer out = new OutputAnalyzer(javap);
 86             javap.waitFor();
 87             System.out.println(out.getStdout());
 88             System.err.println(out.getStderr());
 89             out.shouldHaveExitValue(0);
 90             out.shouldMatch("public class " + APP_DOT_CLASSNAME);
 91             // StackMapTable might not be generated for a class
 92             // containing only methods with sequential control flows.
 93             // But the class used here (LingeredApp) is not such a case.
 94             out.shouldContain("StackMapTable:");
 95             out.shouldContain("BootstrapMethods:");
 96             out.shouldNotContain("Error:");
 97         } catch (SkippedException se) {
 98             throw se;
 99         } catch (Exception ex) {
100             throw new RuntimeException("Test ERROR " + ex, ex);
101         } finally {
102             LingeredApp.stopApp(theApp);
103         }
104         System.out.println("Test PASSED");
105     }
106 }