mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-11-26 04:14:06 +08:00
VirtualMachineCommandSet.java: Implemented VirtualMachine Command Set.
* gnu/classpath/jdwp/processor/VirtualMachineCommandSet.java:
Implemented VirtualMachine Command Set.
From-SVN: r102026
This commit is contained in:
Aaron Luchko
Aaron Luchko
parent
9d5faaafe3
commit
b11e14262e
@ -1,3 +1,8 @@
|
||||
2005-07-14 Aaron Luchko <aluchko@redhat.com>
|
||||
|
||||
* gnu/classpath/jdwp/processor/VirtualMachineCommandSet.java:
|
||||
Implemented VirtualMachine Command Set.
|
||||
|
||||
2005-07-14 Tom Tromey <tromey@redhat.com>
|
||||
|
||||
* java/lang/Class.java (getProtectionDomain): Merged javadoc from
|
||||
|
||||
@ -0,0 +1,474 @@
|
||||
/* VirtualMachineCommandSet.java -- class to implement the VirtualMachine
|
||||
Command Set
|
||||
Copyright (C) 2005 Free Software Foundation
|
||||
|
||||
This file is part of GNU Classpath.
|
||||
|
||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
GNU Classpath 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 for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
02110-1301 USA.
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
|
||||
obligated to do so. If you do not wish to do so, delete this
|
||||
exception statement from your version. */
|
||||
|
||||
|
||||
package gnu.classpath.jdwp.processor;
|
||||
|
||||
import gnu.classpath.jdwp.IVirtualMachine;
|
||||
import gnu.classpath.jdwp.Jdwp;
|
||||
import gnu.classpath.jdwp.JdwpConstants;
|
||||
import gnu.classpath.jdwp.exception.JdwpException;
|
||||
import gnu.classpath.jdwp.exception.JdwpInternalErrorException;
|
||||
import gnu.classpath.jdwp.exception.NotImplementedException;
|
||||
import gnu.classpath.jdwp.id.IdManager;
|
||||
import gnu.classpath.jdwp.id.ObjectId;
|
||||
import gnu.classpath.jdwp.id.ReferenceTypeId;
|
||||
import gnu.classpath.jdwp.util.JdwpString;
|
||||
import gnu.classpath.jdwp.util.Signature;
|
||||
|
||||
import java.io.DataOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Iterator;
|
||||
import java.util.Properties;
|
||||
|
||||
/**
|
||||
* A class representing the VirtualMachine Command Set.
|
||||
*
|
||||
* @author Aaron Luchko <aluchko@redhat.com>
|
||||
*/
|
||||
public class VirtualMachineCommandSet implements CommandSet
|
||||
{
|
||||
// Our hook into the jvm
|
||||
private final IVirtualMachine vm = Jdwp.getIVirtualMachine();
|
||||
|
||||
// Manages all the different ids that are assigned by jdwp
|
||||
private final IdManager idMan = Jdwp.getIdManager();
|
||||
|
||||
// The Jdwp object
|
||||
private final Jdwp jdwp = Jdwp.getDefault();
|
||||
|
||||
public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command)
|
||||
throws JdwpException
|
||||
{
|
||||
boolean keepRunning = true;
|
||||
try
|
||||
{
|
||||
switch (command)
|
||||
{
|
||||
case JdwpConstants.CommandSet.VirtualMachine.VERSION:
|
||||
executeVersion(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.CLASSES_BY_SIGNATURE:
|
||||
executeClassesBySignature(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.ALL_CLASSES:
|
||||
executeAllClasses(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.ALL_THREADS:
|
||||
executeAllThreads(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.TOP_LEVEL_THREAD_GROUPS:
|
||||
executeTopLevelThreadGroups(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.IDSIZES:
|
||||
executeIDsizes(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.DISPOSE:
|
||||
keepRunning = false;
|
||||
executeDispose(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.SUSPEND:
|
||||
executeSuspend(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.RESUME:
|
||||
executeResume(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.EXIT:
|
||||
keepRunning = false;
|
||||
executeExit(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.CREATE_STRING:
|
||||
executeCreateString(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.CAPABILITIES:
|
||||
executeCapabilities(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.CLASS_PATHS:
|
||||
executeClassPaths(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.DISPOSE_OBJECTS:
|
||||
executeDisposeObjects(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.HOLD_EVENTS:
|
||||
executeHoldEvents(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.RELEASE_EVENTS:
|
||||
executeReleaseEvents(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.CAPABILITIES_NEW:
|
||||
executeCapabilitiesNew(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.REDEFINE_CLASSES:
|
||||
executeRedefineClasses(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.SET_DEFAULT_STRATUM:
|
||||
executeSetDefaultStratum(bb, os);
|
||||
break;
|
||||
case JdwpConstants.CommandSet.VirtualMachine.ALL_CLASSES_WITH_GENERIC:
|
||||
executeAllClassesWithGeneric(bb, os);
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
catch (IOException ex)
|
||||
{
|
||||
// The DataOutputStream we're using isn't talking to a socket at all
|
||||
// So if we throw an IOException we're in serious trouble
|
||||
throw new JdwpInternalErrorException(ex);
|
||||
}
|
||||
return keepRunning;
|
||||
}
|
||||
|
||||
private void executeVersion(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
|
||||
Properties props = System.getProperties();
|
||||
|
||||
int jdwpMajor = JdwpConstants.Version.MAJOR;
|
||||
int jdwpMinor = JdwpConstants.Version.MINOR;
|
||||
// The description field is pretty loosely defined
|
||||
String description = "JDWP version " + jdwpMajor + "." + jdwpMinor
|
||||
+ ", JVM version " + props.getProperty("java.vm.name")
|
||||
+ " " + props.getProperty("java.vm.version") + " "
|
||||
+ props.getProperty("java.version");
|
||||
String vmVersion = props.getProperty("java.version");
|
||||
String vmName = props.getProperty("java.vm.name");
|
||||
JdwpString.writeString(os, description);
|
||||
os.write(jdwpMajor);
|
||||
os.write(jdwpMinor);
|
||||
JdwpString.writeString(os, vmName);
|
||||
JdwpString.writeString(os, vmVersion);
|
||||
}
|
||||
|
||||
private void executeClassesBySignature(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
String sig = JdwpString.readString(bb);
|
||||
ArrayList allMatchingClasses = new ArrayList();
|
||||
|
||||
// This will be an Iterator over all loaded Classes
|
||||
Iterator iter = vm.getAllLoadedClasses();
|
||||
|
||||
while (iter.hasNext())
|
||||
{
|
||||
Class clazz = (Class) iter.next();
|
||||
String clazzSig = Signature.computeClassSignature(clazz);
|
||||
if (clazzSig.equals(sig))
|
||||
allMatchingClasses.add(clazz);
|
||||
}
|
||||
|
||||
os.writeInt(allMatchingClasses.size());
|
||||
for (int i = 0; i < allMatchingClasses.size(); i++)
|
||||
{
|
||||
Class clazz = (Class) allMatchingClasses.get(i);
|
||||
ReferenceTypeId id = idMan.getReferenceTypeId(clazz);
|
||||
id.writeTagged(os);
|
||||
int status = vm.getStatus(clazz);
|
||||
os.writeInt(status);
|
||||
}
|
||||
}
|
||||
|
||||
private void executeAllClasses(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
// Disable garbage collection while we're collecting the info on loaded
|
||||
// classes so we some classes don't get collected between the time we get
|
||||
// the count and the time we get the list
|
||||
vm.disableGarbageCollection();
|
||||
|
||||
int classCount = vm.getAllLoadedClassesCount();
|
||||
os.writeInt(classCount);
|
||||
|
||||
// This will be an Iterator over all loaded Classes
|
||||
Iterator iter = vm.getAllLoadedClasses();
|
||||
vm.enableGarbageCollection();
|
||||
int count = 0;
|
||||
|
||||
// Note it's possible classes were created since out classCount so make
|
||||
// sure we don't write more classes than we told the debugger
|
||||
while (iter.hasNext() && count++ < classCount)
|
||||
{
|
||||
Class clazz = (Class) iter.next();
|
||||
ReferenceTypeId id = idMan.getReferenceTypeId(clazz);
|
||||
id.writeTagged(os);
|
||||
String sig = Signature.computeClassSignature(clazz);
|
||||
JdwpString.writeString(os, sig);
|
||||
int status = vm.getStatus(clazz);
|
||||
os.writeInt(status);
|
||||
}
|
||||
}
|
||||
|
||||
private void executeAllThreads(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
ThreadGroup jdwpGroup = Thread.currentThread().getThreadGroup();
|
||||
ThreadGroup root = getRootThreadGroup(jdwpGroup);
|
||||
|
||||
int numThreads = root.activeCount();
|
||||
Thread allThreads[] = new Thread[numThreads];
|
||||
root.enumerate(allThreads, true);
|
||||
|
||||
// We need to loop through for the true count since some threads may have
|
||||
// been destroyed since we got
|
||||
// activeCount so those spots in the array will be null. As well we must
|
||||
// ignore any threads that belong to jdwp
|
||||
numThreads = 0;
|
||||
for (int i = 0; i < allThreads.length; i++)
|
||||
{
|
||||
Thread thread = allThreads[i];
|
||||
if (thread == null)
|
||||
break; // No threads after this point
|
||||
if (!thread.getThreadGroup().equals(jdwpGroup))
|
||||
numThreads++;
|
||||
}
|
||||
|
||||
os.writeInt(numThreads);
|
||||
|
||||
for (int i = 0; i < allThreads.length; i++)
|
||||
{
|
||||
Thread thread = allThreads[i];
|
||||
if (thread == null)
|
||||
break; // No threads after this point
|
||||
if (!thread.getThreadGroup().equals(jdwpGroup))
|
||||
idMan.getId(thread).write(os);
|
||||
}
|
||||
}
|
||||
|
||||
private void executeTopLevelThreadGroups(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
ThreadGroup jdwpGroup = jdwp.getJdwpThreadGroup();
|
||||
ThreadGroup root = getRootThreadGroup(jdwpGroup);
|
||||
|
||||
os.writeInt(1); // Just one top level group allowed?
|
||||
idMan.getId(root);
|
||||
}
|
||||
|
||||
private void executeDispose(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
// resumeAllThreads isn't sufficient as a thread may have been
|
||||
// suspended multiple times, we likely need a way to keep track of how many
|
||||
// times a thread has been suspended or else a stronger resume method for
|
||||
// this purpose
|
||||
// vm.resumeAllThreadsExcept(jdwp.getJdwpThreadGroup());
|
||||
|
||||
// Simply shutting down the jdwp layer will take care of the rest of the
|
||||
// shutdown other than disabling debugging in the VM
|
||||
// vm.disableDebugging();
|
||||
|
||||
// Don't implement this until we're sure how to remove all the debugging
|
||||
// effects from the VM.
|
||||
throw new NotImplementedException(
|
||||
"Command VirtualMachine.Dispose not implemented");
|
||||
|
||||
}
|
||||
|
||||
private void executeIDsizes(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
ObjectId oid = new ObjectId();
|
||||
os.writeInt(oid.size()); // fieldId
|
||||
os.writeInt(oid.size()); // methodId
|
||||
os.writeInt(oid.size()); // objectId
|
||||
os.writeInt(new ReferenceTypeId((byte) 0x00).size()); // referenceTypeId
|
||||
os.writeInt(oid.size()); // frameId
|
||||
}
|
||||
|
||||
private void executeSuspend(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
vm.suspendAllThreadsExcept(jdwp.getJdwpThreadGroup());
|
||||
}
|
||||
|
||||
private void executeResume(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
vm.resumeAllThreadsExcept(jdwp.getJdwpThreadGroup());
|
||||
}
|
||||
|
||||
private void executeExit(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
int exitCode = bb.getInt();
|
||||
jdwp.setExit(exitCode);
|
||||
}
|
||||
|
||||
private void executeCreateString(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
String string = JdwpString.readString(bb);
|
||||
ObjectId stringId = Jdwp.getIdManager().getId(string);
|
||||
|
||||
// Since this string isn't referenced anywhere we'll disable garbage
|
||||
// collection on it so it's still around when the debugger gets back to it.
|
||||
stringId.disableCollection();
|
||||
stringId.write(os);
|
||||
}
|
||||
|
||||
private void executeCapabilities(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
// Store these somewhere?
|
||||
os.writeBoolean(false); // canWatchFieldModification
|
||||
os.writeBoolean(false); // canWatchFieldAccess
|
||||
os.writeBoolean(false); // canGetBytecodes
|
||||
os.writeBoolean(false); // canGetSyntheticAttribute
|
||||
os.writeBoolean(false); // canGetOwnedMonitorInfo
|
||||
os.writeBoolean(false); // canGetCurrentContendedMonitor
|
||||
os.writeBoolean(false); // canGetMonitorInfo
|
||||
}
|
||||
|
||||
private void executeClassPaths(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
String baseDir = System.getProperty("user.dir");
|
||||
JdwpString.writeString(os, baseDir);
|
||||
|
||||
// Find and write the classpath
|
||||
String classPath = System.getProperty("java.class.path");
|
||||
String[] paths = classPath.split(":");
|
||||
|
||||
os.writeInt(paths.length);
|
||||
for (int i = 0; i < paths.length; i++)
|
||||
JdwpString.writeString(os, paths[i]);
|
||||
|
||||
// Now the bootpath
|
||||
String bootPath = System.getProperty("sun.boot.class.path");
|
||||
paths = bootPath.split(":");
|
||||
os.writeInt(paths.length);
|
||||
for (int i = 0; i < paths.length; i++)
|
||||
JdwpString.writeString(os, paths[i]);
|
||||
}
|
||||
|
||||
private void executeDisposeObjects(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
// Instead of going through the list of objects they give us it's probably
|
||||
// better just to find the garbage collected objects ourselves
|
||||
idMan.update();
|
||||
}
|
||||
|
||||
private void executeHoldEvents(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
// Going to have to implement a send queue somewhere and do this without
|
||||
// triggering events
|
||||
// Until then just don't implement
|
||||
throw new NotImplementedException(
|
||||
"Command VirtualMachine.HoldEvents not implemented");
|
||||
}
|
||||
|
||||
// Opposite of executeHoldEvents
|
||||
private void executeReleaseEvents(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
throw new NotImplementedException(
|
||||
"Command VirtualMachine.ReleaseEvents not implemented");
|
||||
}
|
||||
|
||||
private void executeCapabilitiesNew(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException, IOException
|
||||
{
|
||||
// Store these somewhere?
|
||||
final int CAPABILITIES_NEW_SIZE = 32;
|
||||
os.writeBoolean(false); // canWatchFieldModification
|
||||
os.writeBoolean(false); // canWatchFieldAccess
|
||||
os.writeBoolean(false); // canGetBytecodes
|
||||
os.writeBoolean(false); // canGetSyntheticAttribute
|
||||
os.writeBoolean(false); // canGetOwnedMonitorInfo
|
||||
os.writeBoolean(false); // canGetCurrentContendedMonitor
|
||||
os.writeBoolean(false); // canGetMonitorInfo
|
||||
os.writeBoolean(false); // canRedefineClasses
|
||||
os.writeBoolean(false); // canAddMethod
|
||||
os.writeBoolean(false); // canUnrestrictedlyRedefineClasses
|
||||
os.writeBoolean(false); // canPopFrames
|
||||
os.writeBoolean(false); // canUseInstanceFilters
|
||||
os.writeBoolean(false); // canGetSourceDebugExtension
|
||||
os.writeBoolean(false); // canRequestVMDeathEvent
|
||||
os.writeBoolean(false); // canSetDefaultStratum
|
||||
for (int i = 15; i < CAPABILITIES_NEW_SIZE; i++)
|
||||
// Future capabilities
|
||||
// currently unused
|
||||
os.writeBoolean(false); // Set to false
|
||||
}
|
||||
|
||||
private void executeRedefineClasses(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
// Optional command, don't implement
|
||||
throw new NotImplementedException(
|
||||
"Command VirtualMachine.RedefineClasses not implemented");
|
||||
}
|
||||
|
||||
private void executeSetDefaultStratum(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
// Optional command, don't implement
|
||||
throw new NotImplementedException(
|
||||
"Command VirtualMachine.SetDefaultStratum not implemented");
|
||||
}
|
||||
|
||||
private void executeAllClassesWithGeneric(ByteBuffer bb, DataOutputStream os)
|
||||
throws JdwpException
|
||||
{
|
||||
// We don't handle generics
|
||||
throw new NotImplementedException(
|
||||
"Command VirtualMachine.AllClassesWithGeneric not implemented");
|
||||
}
|
||||
|
||||
/**
|
||||
* Find the root ThreadGroup of this ThreadGroup
|
||||
*/
|
||||
private ThreadGroup getRootThreadGroup(ThreadGroup group)
|
||||
{
|
||||
ThreadGroup parent = group.getParent();
|
||||
|
||||
while (parent != null)
|
||||
{
|
||||
group = parent;
|
||||
parent = group.getParent();
|
||||
}
|
||||
return group; // This group was the root
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user