1 /*
   2  * Copyright (c) 2016, 2018, 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 /**
  25  * @test SASymbolTableTest
  26  * @summary Walk symbol table using SA, with and without CDS.
  27  * @requires vm.cds
  28  * @library /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          jdk.hotspot.agent/sun.jvm.hotspot.oops
  31  *          jdk.hotspot.agent/sun.jvm.hotspot.memory
  32  *          jdk.hotspot.agent/sun.jvm.hotspot.runtime
  33  *          jdk.hotspot.agent/sun.jvm.hotspot.tools
  34  *          java.management
  35  * @build SASymbolTableTestAgent
  36  * @run main SASymbolTableTest
  37  */
  38 
  39 import java.util.Arrays;
  40 import java.util.List;
  41 import jdk.test.lib.cds.CDSTestUtils;
  42 import jdk.test.lib.process.ProcessTools;
  43 import jdk.test.lib.process.OutputAnalyzer;
  44 import jdk.test.lib.JDKToolFinder;
  45 import jdk.test.lib.Platform;
  46 import jdk.test.lib.apps.LingeredApp;
  47 
  48 /*
  49  * The purpose of this test is to validate that we can use SA to
  50  * attach a process and walk its SymbolTable, regardless whether
  51  * the attachee process runs in CDS mode or not.
  52  *
  53  * SASymbolTableTest Just sets up the agent and attachee processes.
  54  * The SymbolTable walking is done in the SASymbolTableTestAgent class.
  55  */
  56 public class SASymbolTableTest {
  57     static String jsaName = "./SASymbolTableTest.jsa";
  58     private static LingeredApp theApp = null;
  59 
  60 
  61     public static void main(String[] args) throws Exception {
  62         if (!Platform.shouldSAAttach()) {
  63             System.out.println("SA attach not expected to work - test skipped.");
  64             return;
  65         }
  66 
  67         CDSTestUtils.createArchiveAndCheck();
  68         run(true);
  69         run(false);
  70     }
  71 
  72 
  73     private static void run(boolean useArchive) throws Exception {
  74         String flag = useArchive ? "auto" : "off";
  75 
  76         try {
  77             // (1) Launch the attachee process
  78             System.out.println("Starting LingeredApp");
  79             List<String> vmOpts = Arrays.asList(
  80                     "-XX:+UnlockDiagnosticVMOptions",
  81                     "-XX:SharedArchiveFile=" + jsaName,
  82                     "-Xshare:" + flag,
  83                     "-showversion");                // so we can see "sharing" in the output
  84 
  85             theApp = LingeredApp.startApp(vmOpts);
  86 
  87             // (2) Launch the agent process
  88             long pid = theApp.getPid();
  89             System.out.println("Attaching agent to " + pid );
  90             ProcessBuilder tool = ProcessTools.createJavaProcessBuilder(
  91                     "--add-modules=jdk.hotspot.agent",
  92                     "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED",
  93                     "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.memory=ALL-UNNAMED",
  94                     "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.runtime=ALL-UNNAMED",
  95                     "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.tools=ALL-UNNAMED",
  96                     "SASymbolTableTestAgent",
  97                     Long.toString(pid));
  98             OutputAnalyzer output = CDSTestUtils.executeAndLog(tool, "tool");
  99             if (output.getStdout().contains("connected too early")) {
 100                 System.out.println("SymbolTable not created by VM - test skipped");
 101                 return;
 102             }
 103             output.shouldHaveExitValue(0);
 104         } catch (Exception ex) {
 105             throw new RuntimeException("Test ERROR " + ex, ex);
 106         } finally {
 107             LingeredApp.stopApp(theApp);
 108         }
 109     }
 110 }