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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 | +} | |