1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/*
* Copyright (c) 2004, 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.jstat;
import java.util.*;
import sun.jvmstat.monitor.*;
import sun.jvmstat.monitor.event.*;
/**
* Application to output jvmstat statistics exported by a target Java
* Virtual Machine. The jstat tool gets its inspiration from the suite
* of 'stat' tools, such as vmstat, iostat, mpstat, etc., available in
* various UNIX platforms.
*
* @author Brian Doherty
* @since 1.5
*/
public class Jstat {
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.out);
System.exit(0);
}
if (arguments.isOptions()) {
OptionLister ol = new OptionLister(arguments.optionsSources());
ol.print(System.out);
System.exit(0);
}
try {
if (arguments.isList()) {
logNames();
} else if (arguments.isSnap()) {
logSnapShot();
} else {
logSamples();
}
} 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);
}
System.exit(0);
}
static void logNames() throws MonitorException {
VmIdentifier vmId = arguments.vmId();
int interval = arguments.sampleInterval();
MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId);
MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, interval);
JStatLogger logger = new JStatLogger(monitoredVm);
logger.printNames(arguments.counterNames(), arguments.comparator(),
arguments.showUnsupported(), System.out);
monitoredHost.detach(monitoredVm);
}
static void logSnapShot() throws MonitorException {
VmIdentifier vmId = arguments.vmId();
int interval = arguments.sampleInterval();
MonitoredHost monitoredHost = MonitoredHost.getMonitoredHost(vmId);
MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, interval);
JStatLogger logger = new JStatLogger(monitoredVm);
logger.printSnapShot(arguments.counterNames(), arguments.comparator(),
arguments.isVerbose(), arguments.showUnsupported(),
System.out);
monitoredHost.detach(monitoredVm);
}
static void logSamples() throws MonitorException {
final VmIdentifier vmId = arguments.vmId();
int interval = arguments.sampleInterval();
final MonitoredHost monitoredHost =
MonitoredHost.getMonitoredHost(vmId);
MonitoredVm monitoredVm = monitoredHost.getMonitoredVm(vmId, interval);
final JStatLogger logger = new JStatLogger(monitoredVm);
OutputFormatter formatter = null;
if (arguments.isSpecialOption()) {
OptionFormat format = arguments.optionFormat();
formatter = new OptionOutputFormatter(monitoredVm, format);
} else {
List<Monitor> logged = monitoredVm.findByPattern(arguments.counterNames());
Collections.sort(logged, arguments.comparator());
List<Monitor> constants = new ArrayList<Monitor>();
for (Iterator i = logged.iterator(); i.hasNext(); /* empty */) {
Monitor m = (Monitor)i.next();
if (!(m.isSupported() || arguments.showUnsupported())) {
i.remove();
continue;
}
if (m.getVariability() == Variability.CONSTANT) {
i.remove();
if (arguments.printConstants()) constants.add(m);
} else if ((m.getUnits() == Units.STRING)
&& !arguments.printStrings()) {
i.remove();
}
}
if (!constants.isEmpty()) {
logger.printList(constants, arguments.isVerbose(),
arguments.showUnsupported(), System.out);
if (!logged.isEmpty()) {
System.out.println();
}
}
if (logged.isEmpty()) {
monitoredHost.detach(monitoredVm);
return;
}
formatter = new RawOutputFormatter(logged,
arguments.printStrings());
}
// handle user termination requests by stopping sampling loops
Runtime.getRuntime().addShutdownHook(new Thread() {
public void run() {
logger.stopLogging();
}
});
// handle target termination events for targets other than ourself
HostListener terminator = new HostListener() {
public void vmStatusChanged(VmStatusChangeEvent ev) {
Integer lvmid = new Integer(vmId.getLocalVmId());
if (ev.getTerminated().contains(lvmid)) {
logger.stopLogging();
} else if (!ev.getActive().contains(lvmid)) {
logger.stopLogging();
}
}
public void disconnected(HostEvent ev) {
if (monitoredHost == ev.getMonitoredHost()) {
logger.stopLogging();
}
}
};
if (vmId.getLocalVmId() != 0) {
monitoredHost.addHostListener(terminator);
}
logger.logSamples(formatter, arguments.headerRate(),
arguments.sampleInterval(), arguments.sampleCount(),
System.out);
// detach from host events and from the monitored target jvm
if (terminator != null) {
monitoredHost.removeHostListener(terminator);
}
monitoredHost.detach(monitoredVm);
}
}
|
