1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
|
/*
* Copyright (c) 1999, 2023, 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.createTestJavaProcessBuilder();
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
}
}
}
|