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| 1 | /* | ||
| 2 | * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.tools.jstat; | ||
| 27 | |||
| 28 | import java.util.*; | ||
| 29 | import sun.jvmstat.monitor.*; | ||
| 30 | import sun.jvmstat.monitor.event.*; | ||
| 31 | |||
| 32 | /** | ||
| 33 | * Application to output jvmstat statistics exported by a target Java | ||
| 34 | * Virtual Machine. The jstat tool gets its inspiration from the suite | ||
| 35 | * of 'stat' tools, such as vmstat, iostat, mpstat, etc., available in | ||
| 36 | * various UNIX platforms. | ||
| 37 | * | ||
| 38 | * @author Brian Doherty | ||
| 39 | * @since 1.5 | ||
| 40 | */ | ||
| 41 | public class Jstat { | ||
| 42 | private static Arguments arguments; | ||
| 43 | |||
| 44 | public static void main(String[] args) { | ||
| 45 | try { | ||
| 46 | arguments = new Arguments(args); | ||
| 47 | } catch (IllegalArgumentException e) { | ||
| 48 | System.err.println(e.getMessage()); | ||
| 49 | Arguments.printUsage(System.err); | ||
| 50 | System.exit(1); | ||
| 51 | } | ||
| 52 | |||
| 53 | if (arguments.isHelp()) { | ||
| 54 | Arguments.printUsage(System.out); | ||
| 55 | System.exit(0); | ||
| 56 | } | ||
| 57 | |||
| 58 | if (arguments.isOptions()) { | ||
| 59 | OptionLister ol = new OptionLister(arguments.optionsSources()); | ||
| 60 | ol.print(System.out); | ||
| 61 | System.exit(0); | ||
| 62 | } | ||
| 63 | |||
| 64 | try { | ||
| 65 | if (arguments.isList()) { | ||
| 66 | logNames(); | ||
| 67 | } else if (arguments.isSnap()) { | ||
| 68 | logSnapShot(); | ||
| 69 | } else { | ||
| 70 | logSamples(); | ||
| 71 | } | ||
| 72 | } catch (MonitorException e) { | ||
| 73 | if (e.getMessage() != null) { | ||
| 74 | System.err.println(e.getMessage()); | ||
| 75 | } else { | ||
| 76 | Throwable cause = e.getCause(); | ||
| 77 | if ((cause != null) && (cause.getMessage() != null)) { | ||
| 78 | System.err.println(cause.getMessage()); | ||
| 79 | } else { | ||
| 80 | e.printStackTrace(); | ||
| 81 | } | ||
| 82 | } | ||
| 83 | System.exit(1); | ||
| 84 | } | ||
| 85 | System.exit(0); | ||
| 86 | } | ||
| 87 | |||
| 88 | static void logNames() throws MonitorException { | ||
| 89 | VmIdentifier vmId = arguments.vmId(); | ||
| 90 | int interval = arguments.sampleInterval(); | ||
| 91 | MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); | ||
| 92 | MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, interval); | ||
| 93 | JStatLogger logger = new JStatLogger(monitoredVm); | ||
| 94 | logger.printNames(arguments.counterNames(), arguments.comparator(), | ||
| 95 | arguments.showUnsupported(), System.out); | ||
| 96 | monitoredHost.detach(monitoredVm); | ||
| 97 | } | ||
| 98 | |||
| 99 | static void logSnapShot() throws MonitorException { | ||
| 100 | VmIdentifier vmId = arguments.vmId(); | ||
| 101 | int interval = arguments.sampleInterval(); | ||
| 102 | MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId); | ||
| 103 | MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, interval); | ||
| 104 | JStatLogger logger = new JStatLogger(monitoredVm); | ||
| 105 | logger.printSnapShot(arguments.counterNames(), arguments.comparator(), | ||
| 106 | arguments.isVerbose(), arguments.showUnsupported(), | ||
| 107 | System.out); | ||
| 108 | monitoredHost.detach(monitoredVm); | ||
| 109 | } | ||
| 110 | |||
| 111 | static void logSamples() throws MonitorException { | ||
| 112 | final VmIdentifier vmId = arguments.vmId(); | ||
| 113 | int interval = arguments.sampleInterval(); | ||
| 114 | final MonitoredHost monitoredHost = | ||
| 115 | MonitoredHost.getMonitoredHost(vmId); | ||
| 116 | MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, interval); | ||
| 117 | final JStatLogger logger = new JStatLogger(monitoredVm); | ||
| 118 | OutputFormatter formatter = null; | ||
| 119 | |||
| 120 | if (arguments.isSpecialOption()) { | ||
| 121 | OptionFormat format = arguments.optionFormat(); | ||
| 122 | formatter = new OptionOutputFormatter(monitoredVm, format); | ||
| 123 | } else { | ||
| 124 | List<Monitor> logged = monitoredVm.findByPattern(arguments.counterNames()); | ||
| 125 | Collections.sort(logged, arguments.comparator()); | ||
| 126 | List<Monitor> constants = new ArrayList<Monitor>(); | ||
| 127 | |||
| 128 | for (Iterator i = logged.iterator(); i.hasNext(); /* empty */) { | ||
| 129 | Monitor m = (Monitor)i.next(); | ||
| 130 | if (!(m.isSupported() || arguments.showUnsupported())) { | ||
| 131 | i.remove(); | ||
| 132 | continue; | ||
| 133 | } | ||
| 134 | if (m.getVariability() == Variability.CONSTANT) { | ||
| 135 | i.remove(); | ||
| 136 | if (arguments.printConstants()) constants.add(m); | ||
| 137 | } else if ((m.getUnits() == Units.STRING) | ||
| 138 | && !arguments.printStrings()) { | ||
| 139 | i.remove(); | ||
| 140 | } | ||
| 141 | } | ||
| 142 | |||
| 143 | if (!constants.isEmpty()) { | ||
| 144 | logger.printList(constants, arguments.isVerbose(), | ||
| 145 | arguments.showUnsupported(), System.out); | ||
| 146 | if (!logged.isEmpty()) { | ||
| 147 | System.out.println(); | ||
| 148 | } | ||
| 149 | } | ||
| 150 | |||
| 151 | if (logged.isEmpty()) { | ||
| 152 | monitoredHost.detach(monitoredVm); | ||
| 153 | return; | ||
| 154 | } | ||
| 155 | |||
| 156 | formatter = new RawOutputFormatter(logged, | ||
| 157 | arguments.printStrings()); | ||
| 158 | } | ||
| 159 | |||
| 160 | // handle user termination requests by stopping sampling loops | ||
| 161 | Runtime.getRuntime().addShutdownHook(new Thread() { | ||
| 162 | public void run() { | ||
| 163 | logger.stopLogging(); | ||
| 164 | } | ||
| 165 | }); | ||
| 166 | |||
| 167 | // handle target termination events for targets other than ourself | ||
| 168 | HostListener terminator = new HostListener() { | ||
| 169 | public void vmStatusChanged(VmStatusChangeEvent ev) { | ||
| 170 | Integer lvmid = new Integer(vmId.getLocalVmId()); | ||
| 171 | if (ev.getTerminated().contains(lvmid)) { | ||
| 172 | logger.stopLogging(); | ||
| 173 | } else if (!ev.getActive().contains(lvmid)) { | ||
| 174 | logger.stopLogging(); | ||
| 175 | } | ||
| 176 | } | ||
| 177 | |||
| 178 | public void disconnected(HostEvent ev) { | ||
| 179 | if (monitoredHost == ev.getMonitoredHost()) { | ||
| 180 | logger.stopLogging(); | ||
| 181 | } | ||
| 182 | } | ||
| 183 | }; | ||
| 184 | |||
| 185 | if (vmId.getLocalVmId() != 0) { | ||
| 186 | monitoredHost.addHostListener(terminator); | ||
| 187 | } | ||
| 188 | |||
| 189 | logger.logSamples(formatter, arguments.headerRate(), | ||
| 190 | arguments.sampleInterval(), arguments.sampleCount(), | ||
| 191 | System.out); | ||
| 192 | |||
| 193 | // detach from host events and from the monitored target jvm | ||
| 194 | if (terminator != null) { | ||
| 195 | monitoredHost.removeHostListener(terminator); | ||
| 196 | } | ||
| 197 | monitoredHost.detach(monitoredVm); | ||
| 198 | } | ||
| 199 | } | ||