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  * @requires (os.arch != "riscv64" | !(vm.cpu.features ~= ".*qemu.*"))
 43  * @library /test/lib
 44  * @run driver ClhsdbDumpclass
 45  */
 46 
 47 public class ClhsdbDumpclass {
 48     static final String APP_DOT_CLASSNAME = LingeredApp.class.getName();
 49     static final String APP_SLASH_CLASSNAME = APP_DOT_CLASSNAME.replace('.', '/');
 50 
 51     public static void main(String[] args) throws Exception {
 52         if (SATestUtils.needsPrivileges()) {
 53             // This test will create a file as root that cannot be easily deleted, so don't run it.
 54             throw new SkippedException("Cannot run this test on OSX if adding privileges is required.");
 55         }
 56         System.out.println("Starting ClhsdbDumpclass test");
 57 
 58         LingeredApp theApp = null;
 59         try {
 60             ClhsdbLauncher test = new ClhsdbLauncher();
 61 
 62             theApp = LingeredApp.startApp();
 63             System.out.println("Started LingeredApp with pid " + theApp.getPid());
 64 
 65             // Run "dumpclass jdk/test/lib/apps/LingeredApp"
 66             String cmd = "dumpclass " + APP_DOT_CLASSNAME;
 67             List<String> cmds = List.of(cmd);
 68             Map<String, List<String>> unExpStrMap = new HashMap<>();
 69             unExpStrMap.put(cmd, List.of("class not found"));
 70             test.run(theApp.getPid(), cmds, null, unExpStrMap);
 71             File classFile = new File(APP_SLASH_CLASSNAME + ".class");
 72             if (!classFile.exists()) {
 73                 throw new RuntimeException("FAILED: Cannot find dumped .class file");
 74             }
 75 
 76             // Run javap on the generated class file to make sure it's valid.
 77             JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("javap");
 78             launcher.addVMArgs(Utils.getTestJavaOpts());
 79             // Let javap print additional info, e.g., StackMapTable
 80             launcher.addToolArg("-verbose");
 81             launcher.addToolArg(classFile.toString());
 82             System.out.println("> javap " + classFile.toString());
 83             List<String> cmdStringList = Arrays.asList(launcher.getCommand());
 84             ProcessBuilder pb = new ProcessBuilder(cmdStringList);
 85             Process javap = pb.start();
 86             OutputAnalyzer out = new OutputAnalyzer(javap);
 87             javap.waitFor();
 88             System.out.println(out.getStdout());
 89             System.err.println(out.getStderr());
 90             out.shouldHaveExitValue(0);
 91             out.shouldMatch("public class " + APP_DOT_CLASSNAME);
 92             // StackMapTable might not be generated for a class
 93             // containing only methods with sequential control flows.
 94             // But the class used here (LingeredApp) is not such a case.
 95             out.shouldContain("StackMapTable:");
 96             out.shouldContain("BootstrapMethods:");
 97             out.shouldNotContain("Error:");
 98         } catch (SkippedException se) {
 99             throw se;
100         } catch (Exception ex) {
101             throw new RuntimeException("Test ERROR " + ex, ex);
102         } finally {
103             LingeredApp.stopApp(theApp);
104         }
105         System.out.println("Test PASSED");
106     }
107 }
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