jdk8-mips64-public/hotspot: comparison test/runtime/7158988/FieldMonitor.java

--1:000000000000
+:f90c822e73f8
+/*
+* Copyright 2012 SAP AG.  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.
+*/
+/*
+* @test FieldMonitor.java
+* @bug 7158988
+* @key regression
+* @summary verify jvm does not crash while debugging
+* @run compile TestPostFieldModification.java
+* @run main/othervm FieldMonitor
+* @author axel.siebenborn@sap.com
+*/
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import com.sun.jdi.Bootstrap;
+import com.sun.jdi.Field;
+import com.sun.jdi.ReferenceType;
+import com.sun.jdi.VirtualMachine;
+import com.sun.jdi.connect.Connector;
+import com.sun.jdi.connect.IllegalConnectorArgumentsException;
+import com.sun.jdi.connect.LaunchingConnector;
+import com.sun.jdi.connect.VMStartException;
+import com.sun.jdi.event.ClassPrepareEvent;
+import com.sun.jdi.event.Event;
+import com.sun.jdi.event.EventQueue;
+import com.sun.jdi.event.EventSet;
+import com.sun.jdi.event.ModificationWatchpointEvent;
+import com.sun.jdi.event.VMDeathEvent;
+import com.sun.jdi.event.VMStartEvent;
+import com.sun.jdi.event.VMDisconnectEvent;
+import com.sun.jdi.request.ClassPrepareRequest;
+import com.sun.jdi.request.EventRequest;
+import com.sun.jdi.request.EventRequestManager;
+import com.sun.jdi.request.ModificationWatchpointRequest;
+public class FieldMonitor {
+public static final String CLASS_NAME = "TestPostFieldModification";
+public static final String FIELD_NAME = "value";
+public static final String ARGUMENTS = "-Xshare:off -XX:+PrintGC";
+public static void main(String[] args)
+throws IOException, InterruptedException {
+//VirtualMachine vm = launchTarget(sb.toString());
+VirtualMachine vm = launchTarget(CLASS_NAME);
+System.out.println("Vm launched");
+// process events
+EventQueue eventQueue = vm.eventQueue();
+// resume the vm
+Process process = vm.process();
+// Copy target's output and error to our output and error.
+Thread outThread = new StreamRedirectThread("out reader", process.getInputStream());
+Thread errThread = new StreamRedirectThread("error reader", process.getErrorStream());
+errThread.start();
+outThread.start();
+boolean connected = true;
+int watched = 0;
+while (connected) {
+EventSet eventSet = eventQueue.remove();
+for (Event event : eventSet) {
+System.out.println("FieldMonitor-main receives: "+event);
+if (event instanceof VMStartEvent) {
+addClassWatch(vm);
+} else if (event instanceof VMDeathEvent
+|| event instanceof VMDisconnectEvent) {
+// exit
+connected = false;
+} else if (event instanceof ClassPrepareEvent) {
+// watch field on loaded class
+System.out.println("ClassPrepareEvent");
+ClassPrepareEvent classPrepEvent = (ClassPrepareEvent) event;
+ReferenceType refType = classPrepEvent
+.referenceType();
+addFieldWatch(vm, refType);
+} else if (event instanceof ModificationWatchpointEvent) {
+watched++;
+System.out.println("sleep for 500 ms");
+Thread.sleep(500);
+ModificationWatchpointEvent modEvent = (ModificationWatchpointEvent) event;
+System.out.println("old="
++ modEvent.valueCurrent());
+System.out.println("new=" + modEvent.valueToBe());
+}
+}
+System.out.println("resume...");
+eventSet.resume();
+}
+// Shutdown begins when event thread terminates
+try {
+errThread.join(); // Make sure output is forwarded
+outThread.join();
+} catch (InterruptedException exc) {
+// we don't interrupt
+}
+if (watched != 11) { // init + 10 modifications in TestPostFieldModification class
+throw new Error("Expected to receive 11 times ModificationWatchpointEvent, but got "+watched);
+}
+}
+/**
+* Find a com.sun.jdi.CommandLineLaunch connector
+*/
+static LaunchingConnector findLaunchingConnector() {
+List <Connector> connectors = Bootstrap.virtualMachineManager().allConnectors();
+Iterator <Connector> iter = connectors.iterator();
+while (iter.hasNext()) {
+Connector connector = iter.next();
+if (connector.name().equals("com.sun.jdi.CommandLineLaunch")) {
+return (LaunchingConnector)connector;
+}
+}
+throw new Error("No launching connector");
+}
+/**
+* Return the launching connector's arguments.
+*/
+static Map <String,Connector.Argument> connectorArguments(LaunchingConnector connector, String mainArgs) {
+Map<String,Connector.Argument> arguments = connector.defaultArguments();
+for (String key : arguments.keySet()) {
+System.out.println(key);
+}
+Connector.Argument mainArg = (Connector.Argument)arguments.get("main");
+if (mainArg == null) {
+throw new Error("Bad launching connector");
+}
+mainArg.setValue(mainArgs);
+Connector.Argument optionsArg = (Connector.Argument)arguments.get("options");
+if (optionsArg == null) {
+throw new Error("Bad launching connector");
+}
+optionsArg.setValue(ARGUMENTS);
+return arguments;
+}
+static VirtualMachine launchTarget(String mainArgs) {
+LaunchingConnector connector = findLaunchingConnector();
+Map  arguments = connectorArguments(connector, mainArgs);
+try {
+return (VirtualMachine) connector.launch(arguments);
+} catch (IOException exc) {
+throw new Error("Unable to launch target VM: " + exc);
+} catch (IllegalConnectorArgumentsException exc) {
+throw new Error("Internal error: " + exc);
+} catch (VMStartException exc) {
+throw new Error("Target VM failed to initialize: " +
+exc.getMessage());
+}
+}
+private static void addClassWatch(VirtualMachine vm) {
+EventRequestManager erm = vm.eventRequestManager();
+ClassPrepareRequest classPrepareRequest = erm
+.createClassPrepareRequest();
+classPrepareRequest.addClassFilter(CLASS_NAME);
+classPrepareRequest.setEnabled(true);
+}
+private static void addFieldWatch(VirtualMachine vm,
+ReferenceType refType) {
+EventRequestManager erm = vm.eventRequestManager();
+Field field = refType.fieldByName(FIELD_NAME);
+ModificationWatchpointRequest modificationWatchpointRequest = erm
+.createModificationWatchpointRequest(field);
+modificationWatchpointRequest.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);
+modificationWatchpointRequest.setEnabled(true);
+}
+}
+class StreamRedirectThread extends Thread {
+private final BufferedReader in;
+private static final int BUFFER_SIZE = 2048;
+/**
+* Set up for copy.
+* @param name  Name of the thread
+* @param in    Stream to copy from
+* @param out   Stream to copy to
+*/
+StreamRedirectThread(String name, InputStream in) {
+super(name);
+this.in = new BufferedReader(new InputStreamReader(in));
+}
+/**
+* Copy.
+*/
+public void run() {
+try {
+String line;
+while ((line = in.readLine ()) != null) {
+System.out.println ("testvm: " + line);
+}
+System.out.flush();
+} catch(IOException exc) {
+System.err.println("Child I/O Transfer - " + exc);
+}
+}
+}

Mercurial > jdk8-mips64-public > hotspot / file comparison

comparison: test/runtime/7158988/FieldMonitor.java

test/runtime/7158988/FieldMonitor.java