1 /* 2 * Copyright (c) 2017, 2020, 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.util.ArrayList; 25 import java.util.List; 26 27 import sun.jvm.hotspot.HotSpotAgent; 28 import sun.jvm.hotspot.utilities.ReversePtrsAnalysis; 29 30 import jdk.test.lib.apps.LingeredApp; 31 import jdk.test.lib.Asserts; 32 import jdk.test.lib.JDKToolFinder; 33 import jdk.test.lib.JDKToolLauncher; 34 import jdk.test.lib.Platform; 35 import jdk.test.lib.process.OutputAnalyzer; 36 import jdk.test.lib.process.ProcessTools; 37 import jdk.test.lib.SA.SATestUtils; 38 import jdk.test.lib.Utils; 39 40 /** 41 * @test 42 * @library /test/lib 43 * @requires vm.hasSA 44 * @modules java.base/jdk.internal.misc 45 * jdk.hotspot.agent/sun.jvm.hotspot 46 * jdk.hotspot.agent/sun.jvm.hotspot.utilities 47 * @run main/othervm TestRevPtrsForInvokeDynamic 48 */ 49 50 public class TestRevPtrsForInvokeDynamic { 51 52 private static LingeredAppWithInvokeDynamic theApp = null; 53 54 private static void computeReversePointers(String pid) throws Exception { 55 HotSpotAgent agent = new HotSpotAgent(); 56 57 try { 58 agent.attach(Integer.parseInt(pid)); 59 ReversePtrsAnalysis analysis = new ReversePtrsAnalysis(); 60 analysis.run(); 61 } finally { 62 agent.detach(); 63 } 64 } 65 66 private static void createAnotherToAttach(long lingeredAppPid) 67 throws Exception { 68 String[] toolArgs = { 69 "--add-modules=jdk.hotspot.agent", 70 "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED", 71 "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.utilities=ALL-UNNAMED", 72 "TestRevPtrsForInvokeDynamic", 73 Long.toString(lingeredAppPid) 74 }; 75 76 // Start a new process to attach to the lingered app 77 ProcessBuilder processBuilder = ProcessTools.createJavaProcessBuilder(toolArgs); 78 SATestUtils.addPrivilegesIfNeeded(processBuilder); 79 OutputAnalyzer SAOutput = ProcessTools.executeProcess(processBuilder); 80 SAOutput.shouldHaveExitValue(0); 81 System.out.println(SAOutput.getOutput()); 82 } 83 84 public static void main (String... args) throws Exception { 85 SATestUtils.skipIfCannotAttach(); // throws SkippedException if attach not expected to work. 86 if (args == null || args.length == 0) { 87 try { 88 theApp = new LingeredAppWithInvokeDynamic(); 89 LingeredApp.startApp(theApp, "-XX:+UsePerfData"); 90 createAnotherToAttach(theApp.getPid()); 91 } finally { 92 LingeredApp.stopApp(theApp); 93 } 94 } else { 95 computeReversePointers(args[0]); 96 } 97 } 98 }