| /* |
| * Copyright (c) 2004, 2013, 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.jps; |
| |
| import java.util.*; |
| import java.net.*; |
| import sun.jvmstat.monitor.*; |
| |
| /** |
| * Application to provide a listing of monitorable java processes. |
| * |
| * @author Brian Doherty |
| * @since 1.5 |
| */ |
| public class Jps { |
| |
| private static Arguments arguments; |
| |
| public static void main(String[] args) { |
| try { |
| arguments = new Arguments(args); |
| } catch (IllegalArgumentException e) { |
| System.err.println(e.getMessage()); |
| Arguments.printUsage(System.err); |
| System.exit(1); |
| } |
| |
| if (arguments.isHelp()) { |
| Arguments.printUsage(System.err); |
| System.exit(0); |
| } |
| |
| try { |
| HostIdentifier hostId = arguments.hostId(); |
| MonitoredHost monitoredHost = |
| MonitoredHost.getMonitoredHost(hostId); |
| |
| // get the set active JVMs on the specified host. |
| Set<Integer> jvms = monitoredHost.activeVms(); |
| |
| for (Integer jvm: jvms) { |
| StringBuilder output = new StringBuilder(); |
| Throwable lastError = null; |
| |
| int lvmid = jvm; |
| |
| output.append(String.valueOf(lvmid)); |
| |
| if (arguments.isQuiet()) { |
| System.out.println(output); |
| continue; |
| } |
| |
| MonitoredVm vm = null; |
| String vmidString = "//" + lvmid + "?mode=r"; |
| |
| String errorString = null; |
| |
| try { |
| // Note: The VM associated with the current VM id may |
| // no longer be running so these queries may fail. We |
| // already added the VM id to the output stream above. |
| // If one of the queries fails, then we try to add a |
| // reasonable message to indicate that the requested |
| // info is not available. |
| |
| errorString = " -- process information unavailable"; |
| VmIdentifier id = new VmIdentifier(vmidString); |
| vm = monitoredHost.getMonitoredVm(id, 0); |
| |
| errorString = " -- main class information unavailable"; |
| output.append(' ').append(MonitoredVmUtil.mainClass(vm, |
| arguments.showLongPaths())); |
| |
| if (arguments.showMainArgs()) { |
| errorString = " -- main args information unavailable"; |
| String mainArgs = MonitoredVmUtil.mainArgs(vm); |
| if (mainArgs != null && mainArgs.length() > 0) { |
| output.append(' ').append(mainArgs); |
| } |
| } |
| if (arguments.showVmArgs()) { |
| errorString = " -- jvm args information unavailable"; |
| String jvmArgs = MonitoredVmUtil.jvmArgs(vm); |
| if (jvmArgs != null && jvmArgs.length() > 0) { |
| output.append(' ').append(jvmArgs); |
| } |
| } |
| if (arguments.showVmFlags()) { |
| errorString = " -- jvm flags information unavailable"; |
| String jvmFlags = MonitoredVmUtil.jvmFlags(vm); |
| if (jvmFlags != null && jvmFlags.length() > 0) { |
| output.append(' ').append(jvmFlags); |
| } |
| } |
| |
| errorString = " -- detach failed"; |
| monitoredHost.detach(vm); |
| |
| System.out.println(output); |
| |
| errorString = null; |
| } catch (URISyntaxException e) { |
| // unexpected as vmidString is based on a validated hostid |
| lastError = e; |
| assert false; |
| } catch (Exception e) { |
| lastError = e; |
| } finally { |
| if (errorString != null) { |
| /* |
| * we ignore most exceptions, as there are race |
| * conditions where a JVM in 'jvms' may terminate |
| * before we get a chance to list its information. |
| * Other errors, such as access and I/O exceptions |
| * should stop us from iterating over the complete set. |
| */ |
| output.append(errorString); |
| if (arguments.isDebug()) { |
| if ((lastError != null) |
| && (lastError.getMessage() != null)) { |
| output.append("\n\t"); |
| output.append(lastError.getMessage()); |
| } |
| } |
| System.out.println(output); |
| if (arguments.printStackTrace()) { |
| lastError.printStackTrace(); |
| } |
| continue; |
| } |
| } |
| } |
| } catch (MonitorException e) { |
| if (e.getMessage() != null) { |
| System.err.println(e.getMessage()); |
| } else { |
| Throwable cause = e.getCause(); |
| if ((cause != null) && (cause.getMessage() != null)) { |
| System.err.println(cause.getMessage()); |
| } else { |
| e.printStackTrace(); |
| } |
| } |
| System.exit(1); |
| } |
| } |
| } |