/*

* Copyright 2015 the original author or authors.

* @https://github.com/scouter-project/scouter

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

package scouter.xtra.tools;

import java.io.IOException;

import java.util.Properties;

import com.sun.tools.attach.AttachNotSupportedException;

import com.sun.tools.attach.VirtualMachine;

public class JVM {

public JVM(String pid) {

this.pid = pid;

}

private String pid;

private VirtualMachine vm = null;

private String desc;

public boolean isConnected() {

return vm != null;

}

public String getPid() {

return pid;

}

public boolean connect() throws AttachNotSupportedException, IOException {

this.vm = VirtualMachine.attach(pid);

this.desc = vm.getSystemProperties().getProperty("sun.java.command");

return true;

}

public void close() {

if (this.vm != null) {

try {

this.vm.detach();

} catch (Exception e) {

e.printStackTrace();

}

}

this.pid = null;

this.vm = null;

}

public Properties getSystemProperties() throws IOException {

if (vm == null)

throw new RuntimeException("Not connected to jvm");

return vm.getSystemProperties();

}

public VirtualMachine getVM() {

return vm;

}

public String getDesc() {

return this.desc;

}

}