1 /* 2 * Copyright (c) 2016, 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 * @library /testlibrary 28 * @modules java.base/jdk.internal.misc 29 * jdk.hotspot.agent/sun.jvm.hotspot.oops 30 * jdk.hotspot.agent/sun.jvm.hotspot.memory 31 * jdk.hotspot.agent/sun.jvm.hotspot.runtime 32 * jdk.hotspot.agent/sun.jvm.hotspot.tools 33 * java.management 34 * @build SASymbolTableTestAgent SASymbolTableTestAttachee jdk.test.lib.* 35 * @run main SASymbolTableTest 36 */ 37 38 import jdk.test.lib.*; 39 40 /* 41 * The purpose of this test is to validate that we can use SA to 42 * attach a process and walk its SymbolTable, regardless whether 43 * the attachee process runs in CDS mode or not. 44 * 45 * SASymbolTableTest Just sets up the agent and attachee processes. 46 * The SymbolTable walking is done in the SASymbolTableTestAgent class. 47 */ 48 public class SASymbolTableTest { 49 static String jsaName = "./SASymbolTableTest.jsa"; 50 51 public static void main(String[] args) throws Exception { 52 if (!Platform.shouldSAAttach()) { 53 System.out.println("SA attach not expected to work - test skipped."); 54 return; 55 } 56 createArchive(); 57 run(true); 58 run(false); 59 } 60 61 private static void createArchive() throws Exception { 62 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 63 "-XX:+UnlockDiagnosticVMOptions", 64 "-XX:SharedArchiveFile=" + jsaName, 65 "-Xshare:dump"); 66 67 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 68 output.shouldContain("Loading classes to share"); 69 output.shouldHaveExitValue(0); 70 } 71 72 private static void run(boolean useArchive) throws Exception { 73 String flag = useArchive ? "auto" : "off"; 74 75 // (1) Launch the attachee process 76 ProcessBuilder attachee = ProcessTools.createJavaProcessBuilder( 77 "-XX:+UnlockDiagnosticVMOptions", 78 "-XX:SharedArchiveFile=" + jsaName, 79 "-Xshare:" + flag, 80 "-showversion", // so we can see "sharing" in the output 81 "SASymbolTableTestAttachee"); 82 83 final Process p = attachee.start(); 84 85 // (2) Launch the agent process 86 long pid = p.getPid(); 87 System.out.println("Attaching agent " + pid); 88 ProcessBuilder tool = ProcessTools.createJavaProcessBuilder( 89 "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED", 90 "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.memory=ALL-UNNAMED", 91 "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.runtime=ALL-UNNAMED", 92 "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.tools=ALL-UNNAMED", 93 "SASymbolTableTestAgent", 94 Long.toString(pid)); 95 OutputAnalyzer output = ProcessTools.executeProcess(tool); 96 System.out.println(output.getOutput()); 97 output.shouldHaveExitValue(0); 98 99 Thread t = new Thread() { 100 public void run() { 101 try { 102 OutputAnalyzer output = new OutputAnalyzer(p); 103 System.out.println("STDOUT["); 104 System.out.print(output.getStdout()); 105 System.out.println("]"); 106 System.out.println("STDERR["); 107 System.out.print(output.getStderr()); 108 System.out.println("]"); 109 } catch (Throwable t) { 110 t.printStackTrace(); 111 } 112 } 113 }; 114 t.start(); 115 116 Thread.sleep(2 * 1000); 117 p.destroy(); 118 t.join(); 119 } 120 }