/* * Copyright (c) 2005, 2011, 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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. */package sun.tools.attach;import com.sun.tools.attach.VirtualMachineDescriptor;import com.sun.tools.attach.VirtualMachine;import com.sun.tools.attach.AttachPermission;import com.sun.tools.attach.AttachNotSupportedException;import com.sun.tools.attach.spi.AttachProvider;import java.io.IOException;import java.util.List;import java.util.Iterator;import java.util.ArrayList;import java.util.Set;import java.net.URISyntaxException;import sun.jvmstat.monitor.HostIdentifier;import sun.jvmstat.monitor.Monitor;import sun.jvmstat.monitor.MonitoredHost;import sun.jvmstat.monitor.MonitoredVm;import sun.jvmstat.monitor.MonitoredVmUtil;import sun.jvmstat.monitor.VmIdentifier;import sun.jvmstat.monitor.MonitorException;/* * Platform specific provider implementations extend this */public abstract class HotSpotAttachProvider extends AttachProvider { // perf count name for the JVM version private static final String JVM_VERSION = "java.property.java.vm.version"; public HotSpotAttachProvider() { } public void checkAttachPermission() { SecurityManager sm = System.getSecurityManager(); if (sm != null) { sm.checkPermission( new AttachPermission("attachVirtualMachine") ); } } /* * This listVirtualMachines implementation is based on jvmstat. Can override * this in platform implementations when there is a more efficient mechanism * available. */ public List<VirtualMachineDescriptor> listVirtualMachines() { ArrayList<VirtualMachineDescriptor> result = new ArrayList<VirtualMachineDescriptor>(); MonitoredHost host; Set vms; try { host = MonitoredHost.getMonitoredHost(new HostIdentifier((String)null)); vms = host.activeVms(); } catch (Throwable t) { if (t instanceof ExceptionInInitializerError) { t = t.getCause(); } if (t instanceof ThreadDeath) { throw (ThreadDeath)t; } if (t instanceof SecurityException) { return result; } throw new InternalError(); // shouldn't happen } for (Object vmid: vms) { if (vmid instanceof Integer) { String pid = vmid.toString(); String name = pid; // default to pid if name not available boolean isAttachable = false; MonitoredVm mvm = null; try { mvm = host.getMonitoredVm(new VmIdentifier(pid)); try { isAttachable = MonitoredVmUtil.isAttachable(mvm); // use the command line as the display name name = MonitoredVmUtil.commandLine(mvm); } catch (Exception e) { } if (isAttachable) { result.add(new HotSpotVirtualMachineDescriptor(this, pid, name)); } } catch (Throwable t) { if (t instanceof ThreadDeath) { throw (ThreadDeath)t; } } finally { if (mvm != null) { mvm.detach(); } } } } return result; } /** * Test if a VM is attachable. If it's not attachable, * an AttachNotSupportedException will be thrown. For example, * 1.4.2 or 5.0 VM are not attachable. There are cases that * we can't determine if a VM is attachable or not and this method * will just return. * * This method uses the jvmstat counter to determine if a VM * is attachable. If the target VM does not have a jvmstat * share memory buffer, this method returns. * * @exception AttachNotSupportedException if it's not attachable */ void testAttachable(String id) throws AttachNotSupportedException { MonitoredVm mvm = null; try { VmIdentifier vmid = new VmIdentifier(id); MonitoredHost host = MonitoredHost.getMonitoredHost(vmid); mvm = host.getMonitoredVm(vmid); if (MonitoredVmUtil.isAttachable(mvm)) { // it's attachable; so return false return; } } catch (Throwable t) { if (t instanceof ThreadDeath) { ThreadDeath td = (ThreadDeath)t; throw td; } // we do not know what this id is return; } finally { if (mvm != null) { mvm.detach(); } } // we're sure it's not attachable; throw exception throw new AttachNotSupportedException( "The VM does not support the attach mechanism"); } /** * A virtual machine descriptor to describe a HotSpot virtual machine. */ static class HotSpotVirtualMachineDescriptor extends VirtualMachineDescriptor { HotSpotVirtualMachineDescriptor(AttachProvider provider, String id, String displayName) { super(provider, id, displayName); } public boolean isAttachable() { return true; } }}
/*
* Copyright (c) 2005, 2011, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*/
package sun.tools.attach;
import com.sun.tools.attach.VirtualMachineDescriptor;
import com.sun.tools.attach.VirtualMachine;
import com.sun.tools.attach.AttachPermission;
import com.sun.tools.attach.AttachNotSupportedException;
import com.sun.tools.attach.spi.AttachProvider;
import java.io.IOException;
import java.util.List;
import java.util.Iterator;
import java.util.ArrayList;
import java.util.Set;
import java.net.URISyntaxException;
import sun.jvmstat.monitor.HostIdentifier;
import sun.jvmstat.monitor.Monitor;
import sun.jvmstat.monitor.MonitoredHost;
import sun.jvmstat.monitor.MonitoredVm;
import sun.jvmstat.monitor.MonitoredVmUtil;
import sun.jvmstat.monitor.VmIdentifier;
import sun.jvmstat.monitor.MonitorException;
/*
* Platform specific provider implementations extend this
*/
public abstract class HotSpotAttachProvider extends AttachProvider {
// perf count name for the JVM version
private static final String JVM_VERSION = "java.property.java.vm.version";
public HotSpotAttachProvider() {
}
public void checkAttachPermission() {
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(
new AttachPermission("attachVirtualMachine")
);
}
}
/*
* This listVirtualMachines implementation is based on jvmstat. Can override
* this in platform implementations when there is a more efficient mechanism
* available.
*/
public List<VirtualMachineDescriptor> listVirtualMachines() {
ArrayList<VirtualMachineDescriptor> result =
new ArrayList<VirtualMachineDescriptor>();
MonitoredHost host;
Set vms;
try {
host = MonitoredHost.getMonitoredHost(new HostIdentifier((String)null));
vms = host.activeVms();
} catch (Throwable t) {
if (t instanceof ExceptionInInitializerError) {
t = t.getCause();
}
if (t instanceof ThreadDeath) {
throw (ThreadDeath)t;
}
if (t instanceof SecurityException) {
return result;
}
throw new InternalError(); // shouldn't happen
}
for (Object vmid: vms) {
if (vmid instanceof Integer) {
String pid = vmid.toString();
String name = pid; // default to pid if name not available
boolean isAttachable = false;
MonitoredVm mvm = null;
try {
mvm = host.getMonitoredVm(new VmIdentifier(pid));
try {
isAttachable = MonitoredVmUtil.isAttachable(mvm);
// use the command line as the display name
name = MonitoredVmUtil.commandLine(mvm);
} catch (Exception e) {
}
if (isAttachable) {
result.add(new HotSpotVirtualMachineDescriptor(this, pid, name));
}
} catch (Throwable t) {
if (t instanceof ThreadDeath) {
throw (ThreadDeath)t;
}
} finally {
if (mvm != null) {
mvm.detach();
}
}
}
}
return result;
}
/**
* Test if a VM is attachable. If it's not attachable,
* an AttachNotSupportedException will be thrown. For example,
* 1.4.2 or 5.0 VM are not attachable. There are cases that
* we can't determine if a VM is attachable or not and this method
* will just return.
*
* This method uses the jvmstat counter to determine if a VM
* is attachable. If the target VM does not have a jvmstat
* share memory buffer, this method returns.
*
* @exception AttachNotSupportedException if it's not attachable
*/
void testAttachable(String id) throws AttachNotSupportedException {
MonitoredVm mvm = null;
try {
VmIdentifier vmid = new VmIdentifier(id);
MonitoredHost host = MonitoredHost.getMonitoredHost(vmid);
mvm = host.getMonitoredVm(vmid);
if (MonitoredVmUtil.isAttachable(mvm)) {
// it's attachable; so return false
return;
}
} catch (Throwable t) {
if (t instanceof ThreadDeath) {
ThreadDeath td = (ThreadDeath)t;
throw td;
}
// we do not know what this id is
return;
} finally {
if (mvm != null) {
mvm.detach();
}
}
// we're sure it's not attachable; throw exception
throw new AttachNotSupportedException(
"The VM does not support the attach mechanism");
}
/**
* A virtual machine descriptor to describe a HotSpot virtual machine.
*/
static class HotSpotVirtualMachineDescriptor extends VirtualMachineDescriptor {
HotSpotVirtualMachineDescriptor(AttachProvider provider,
String id,
String displayName) {
super(provider, id, displayName);
}
public boolean isAttachable() {
return true;
}
}
}