--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/tools/jcmd/JCmd.java Wed Jan 04 03:49:35 2012 -0800
@@ -0,0 +1,226 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *com.sun.tools.attach.AttachNotSupportedException
+
+ * 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.jcmd;
+
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.net.URISyntaxException;
+
+import com.sun.tools.attach.VirtualMachine;
+import com.sun.tools.attach.VirtualMachineDescriptor;
+import com.sun.tools.attach.AgentLoadException;
+import com.sun.tools.attach.AttachNotSupportedException;
+import sun.tools.attach.HotSpotVirtualMachine;
+import sun.tools.jstat.JStatLogger;
+import sun.jvmstat.monitor.Monitor;
+import sun.jvmstat.monitor.MonitoredHost;
+import sun.jvmstat.monitor.MonitoredVm;
+import sun.jvmstat.monitor.MonitoredVmUtil;
+import sun.jvmstat.monitor.MonitorException;
+import sun.jvmstat.monitor.VmIdentifier;
+
+public class JCmd {
+ public static void main(String[] args) {
+ Arguments arg = null;
+ try {
+ arg = new Arguments(args);
+ } catch (IllegalArgumentException ex) {
+ System.err.println("Error parsing arguments: " + ex.getMessage()
+ + "\n");
+ Arguments.usage();
+ System.exit(1);
+ }
+
+ if (arg.isShowUsage()) {
+ Arguments.usage();
+ System.exit(1);
+ }
+
+ if (arg.isListProcesses()) {
+ List<VirtualMachineDescriptor> vmds = VirtualMachine.list();
+ for (VirtualMachineDescriptor vmd : vmds) {
+ System.out.println(vmd.id() + " " + vmd.displayName());
+ }
+ System.exit(0);
+ }
+
+ List<String> pids = new ArrayList<String>();
+ if (arg.getPid() == 0) {
+ // find all VMs
+ List<VirtualMachineDescriptor> vmds = VirtualMachine.list();
+ for (VirtualMachineDescriptor vmd : vmds) {
+ if (!isJCmdProcess(vmd)) {
+ pids.add(vmd.id());
+ }
+ }
+ } else if (arg.getProcessSubstring() != null) {
+ // use the partial class-name match
+ List<VirtualMachineDescriptor> vmds = VirtualMachine.list();
+ for (VirtualMachineDescriptor vmd : vmds) {
+ if (isJCmdProcess(vmd)) {
+ continue;
+ }
+ try {
+ String mainClass = getMainClass(vmd);
+ if (mainClass != null
+ && mainClass.indexOf(arg.getProcessSubstring()) != -1) {
+ pids.add(vmd.id());
+ }
+ } catch (MonitorException|URISyntaxException 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();
+ }
+ }
+ }
+ }
+ if (pids.isEmpty()) {
+ System.err.println("Could not find any processes matching : '"
+ + arg.getProcessSubstring() + "'");
+ System.exit(1);
+ }
+ } else if (arg.getPid() == -1) {
+ System.err.println("Invalid pid specified");
+ System.exit(1);
+ } else {
+ // Use the found pid
+ pids.add(arg.getPid() + "");
+ }
+
+ for (String pid : pids) {
+ System.out.println(pid + ":");
+ if (arg.isListCounters()) {
+ listCounters(pid);
+ } else {
+ try {
+ executeCommandForPid(pid, arg.getCommand());
+ } catch(Exception ex) {
+ ex.printStackTrace();
+ }
+ }
+ }
+ }
+
+ private static void executeCommandForPid(String pid, String command)
+ throws AttachNotSupportedException, IOException,
+ UnsupportedEncodingException {
+ VirtualMachine vm = VirtualMachine.attach(pid);
+
+ // Cast to HotSpotVirtualMachine as this is an
+ // implementation specific method.
+ HotSpotVirtualMachine hvm = (HotSpotVirtualMachine) vm;
+ try (InputStream in = hvm.executeJCmd(command);) {
+ // read to EOF and just print output
+ byte b[] = new byte[256];
+ int n;
+ do {
+ n = in.read(b);
+ if (n > 0) {
+ String s = new String(b, 0, n, "UTF-8");
+ System.out.print(s);
+ }
+ } while (n > 0);
+ }
+ vm.detach();
+ }
+
+ private static void listCounters(String pid) {
+ // Code from JStat (can't call it directly since it does System.exit)
+ VmIdentifier vmId = null;
+ try {
+ vmId = new VmIdentifier(pid);
+ } catch (URISyntaxException e) {
+ System.err.println("Malformed VM Identifier: " + pid);
+ return;
+ }
+ try {
+ MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId);
+ MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1);
+ JStatLogger logger = new JStatLogger(monitoredVm);
+ logger.printSnapShot("\\w*", // all names
+ new AscendingMonitorComparator(), // comparator
+ false, // not verbose
+ true, // show unsupported
+ System.out);
+ monitoredHost.detach(monitoredVm);
+ } catch (MonitorException ex) {
+ ex.printStackTrace();
+ }
+ }
+
+ private static boolean isJCmdProcess(VirtualMachineDescriptor vmd) {
+ try {
+ String mainClass = getMainClass(vmd);
+ return mainClass != null && mainClass.equals(JCmd.class.getName());
+ } catch (URISyntaxException|MonitorException ex) {
+ return false;
+ }
+ }
+
+ private static String getMainClass(VirtualMachineDescriptor vmd)
+ throws URISyntaxException, MonitorException {
+ try {
+ String mainClass = null;
+ VmIdentifier vmId = new VmIdentifier(vmd.id());
+ MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId);
+ MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, -1);
+ mainClass = MonitoredVmUtil.mainClass(monitoredVm, true);
+ monitoredHost.detach(monitoredVm);
+ return mainClass;
+ } catch(NullPointerException e) {
+ // There is a potential race, where a running java app is being
+ // queried, unfortunately the java app has shutdown after this
+ // method is started but before getMonitoredVM is called.
+ // If this is the case, then the /tmp/hsperfdata_xxx/pid file
+ // will have disappeared and we will get a NullPointerException.
+ // Handle this gracefully....
+ return null;
+ }
+ }
+
+ /**
+ * Class to compare two Monitor objects by name in ascending order.
+ * (from jstat)
+ */
+ static class AscendingMonitorComparator implements Comparator<Monitor> {
+
+ public int compare(Monitor m1, Monitor m2) {
+ String name1 = m1.getName();
+ String name2 = m2.getName();
+ return name1.compareTo(name2);
+ }
+ }
+}