| /* |
| * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Note: What seems to be an excessive use of System.xxx.flush(); |
| * is actually necessary to combat lost output on win32 systems. |
| * |
| * @test |
| * @bug 4291701 4376819 4422312 4522770 |
| * @summary Test JIT debugging - |
| * assure that launching on uncaught exception works |
| * |
| * @library /test/lib |
| * |
| * @author Robert Field |
| * @run main/othervm JITDebug |
| */ |
| |
| import com.sun.jdi.*; |
| import com.sun.jdi.connect.*; |
| import jdk.test.lib.JDKToolFinder; |
| import jdk.test.lib.Utils; |
| import jdk.test.lib.process.ProcessTools; |
| |
| import java.util.*; |
| |
| /* |
| * This class implements three separate small programs, each |
| * of which (directly or indirectly) invokes the next. These |
| * programs are: |
| * test launcher - |
| * Runs the debug target. It exists to work around a |
| * bug in the test tools which do not allow quoted spaces |
| * in command lines. It launchs the debug target in |
| * such a way that when it encounters an uncaught exception |
| * it (in turn) will launch the trivial debugger. |
| * debug target - |
| * A one line program which throws an uncaught exception. |
| * trivial debugger - |
| * A debugger which attachs to the debug target and shuts |
| * it down with a zero exit code. |
| * These programs are differentiated by their command line arguments: |
| * test launcher - (no args) |
| * debug target - ("TARGET") |
| * trivial debugger - ("DEBUGGER", host and port) |
| */ |
| public class JITDebug { |
| |
| public static void main(String[] args) { |
| if (!new JITDebug().parseArgs(args)) { |
| throw new RuntimeException("Unexpected command line arguments: " |
| + args); |
| } |
| } |
| |
| boolean parseArgs(String[] args) { |
| switch (args.length) { |
| case 0: |
| testLaunch(); |
| return true; |
| case 1: |
| if (args[0].equals("TARGET")) { |
| debugTarget(); |
| return true; |
| } else { |
| return false; |
| } |
| case 3: |
| if (args[0].equals("DEBUGGER")) { |
| // launched by using "-agentlib:" "launch" sub-option: |
| // The following strings are appended to the string given in this argument (space-delimited). |
| // They can aid the launched debugger in establishing a connection with this VM. |
| // The resulting string is executed. |
| // - The value of the transport sub-option. |
| // - The value of the address sub-option (or the generated address if one is not given) |
| trivialDebugger(args[1], args[2]); |
| return true; |
| } else { |
| return false; |
| } |
| default: |
| return false; |
| } |
| } |
| |
| void testLaunch() { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true); |
| List largs = pb.command(); |
| largs.add("-classpath"); |
| largs.add(Utils.TEST_CLASSES); |
| String javaExe = JDKToolFinder.getJDKTool("java"); |
| largs.add("-agentlib:jdwp=transport=dt_socket,server=y,onuncaught=y," + |
| "launch=" + javaExe + " " + this.getClass().getName() + " DEBUGGER "); |
| largs.add(this.getClass().getName()); |
| largs.add("TARGET"); |
| try { |
| ProcessTools.executeCommand(pb) |
| .shouldHaveExitValue(0); |
| } catch (Throwable exc) { |
| throw new RuntimeException("Unexpected exception: " + exc); |
| } |
| System.out.println("JIT Debugging test PASSED"); |
| } |
| |
| // Target VM code |
| void debugTarget() { |
| System.out.flush(); |
| System.out.println("trigger onuncaught launch"); |
| System.out.flush(); |
| throw new RuntimeException("Start-up onuncaught handling"); |
| } |
| |
| void trivialDebugger(String transportMethod, String transportAddress) { |
| System.out.println("trivial debugger started"); |
| String connectorName = null; |
| if ("dt_shmem".equals(transportMethod)) { |
| connectorName = "com.sun.jdi.SharedMemoryAttach"; |
| } else if ("dt_socket".equals(transportMethod)) { |
| connectorName = "com.sun.jdi.SocketAttach"; |
| } else { |
| System.err.flush(); |
| System.err.println("Unknown transportMethod: " + transportMethod + " - hanging"); |
| System.err.flush(); |
| hang(); |
| } |
| List conns = Bootstrap.virtualMachineManager().attachingConnectors(); |
| for (Iterator it = conns.iterator(); it.hasNext(); ) { |
| AttachingConnector conn = (AttachingConnector)it.next(); |
| if (conn.name().equals(connectorName)) { |
| doAttach(connectorName, conn, transportAddress); |
| return; |
| } |
| } |
| System.err.flush(); |
| System.err.println("No attaching connector matching: " + connectorName + " - hanging"); |
| System.err.flush(); |
| hang(); |
| } |
| |
| void doAttach(String connectorName, AttachingConnector conn, String transportAddress) { |
| Map<String, Connector.Argument> connArgs = conn.defaultArguments(); |
| if ("com.sun.jdi.SharedMemoryAttach".equals(connectorName)) { |
| Connector.Argument portArg = (Connector.Argument)connArgs.get("name"); |
| portArg.setValue(transportAddress); |
| } else { |
| Connector.Argument portArg = (Connector.Argument)connArgs.get("port"); |
| portArg.setValue(transportAddress); |
| } |
| try { |
| VirtualMachine vm = conn.attach(connArgs); |
| System.out.println("attached to: " + transportAddress); |
| vm.exit(0); // we are happy - terminate VM with no error |
| System.out.println("we are happy - terminated VM with no error"); |
| } catch (Exception exc) { |
| System.err.flush(); |
| System.err.println("Exception: " + exc + " - hanging"); |
| System.err.flush(); |
| hang(); |
| } |
| } |
| |
| /** Hang so that test fails */ |
| void hang() { |
| try { |
| // ten minute nap |
| Thread.sleep(10 * 60 * 1000); |
| } catch (InterruptedException exc) { |
| // shouldn't happen |
| } |
| } |
| } |