/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.command.system;
import java.io.PrintWriter;
import org.jnode.shell.AbstractCommand;
import org.jnode.vm.isolate.VmIsolate;
/**
* The IsolateCommand provides information about the current isolates in the system.
* @author Levente S\u00e1ntha
*/
public class IsolateCommand extends AbstractCommand {
private static final String str_header = " Id Creator State Main class";
@Override
public void execute() throws Exception {
final PrintWriter out = getOutput().getPrintWriter();
out.println(str_header);
VmIsolate root = VmIsolate.getRoot();
if (root != null) {
out.println(format(String.valueOf(root.getId()), 8, false) + ' ' +
format("0", 8, false) + ' ' +
format(String.valueOf(root.getState()), 8, true));
}
for (VmIsolate iso : VmIsolate.getVmIsolates()) {
out.println(format(String.valueOf(iso.getId()), 8, false) + ' ' +
format(String.valueOf(iso.getCreator().getId()), 8, false) + ' ' +
format(String.valueOf(iso.getState()), 8, true) + ' ' +
iso.getMainClassName());
}
}
public String format(String value, int width, boolean left) {
StringBuilder sb = new StringBuilder(width);
for (int i = 0; i < width - value.length(); i++) {
sb.append(' ');
}
if (left) {
sb.insert(0, value);
} else {
sb.append(value);
}
return sb.toString();
}
}