1 /* |
1 /* |
2 * Copyright (c) 2004, 2014, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
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 |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. Oracle designates this |
7 * published by the Free Software Foundation. Oracle designates this |
71 private String vmIdString; |
71 private String vmIdString; |
72 |
72 |
73 private VmIdentifier vmId; |
73 private VmIdentifier vmId; |
74 |
74 |
75 public static void printUsage(PrintStream ps) { |
75 public static void printUsage(PrintStream ps) { |
76 ps.println("Usage: jstat -help|-options"); |
76 ps.println("Usage: jstat --help|-options"); |
77 ps.println(" jstat -<option> [-t] [-h<lines>] <vmid> [<interval> [<count>]]"); |
77 ps.println(" jstat -<option> [-t] [-h<lines>] <vmid> [<interval> [<count>]]"); |
78 ps.println(); |
78 ps.println(); |
79 ps.println("Definitions:"); |
79 ps.println("Definitions:"); |
80 ps.println(" <option> An option reported by the -options option"); |
80 ps.println(" <option> An option reported by the -options option"); |
81 ps.println(" <vmid> Virtual Machine Identifier. A vmid takes the following form:"); |
81 ps.println(" <vmid> Virtual Machine Identifier. A vmid takes the following form:"); |
91 ps.println(" <n>[\"ms\"|\"s\"]"); |
91 ps.println(" <n>[\"ms\"|\"s\"]"); |
92 ps.println(" Where <n> is an integer and the suffix specifies the units as "); |
92 ps.println(" Where <n> is an integer and the suffix specifies the units as "); |
93 ps.println(" milliseconds(\"ms\") or seconds(\"s\"). The default units are \"ms\"."); |
93 ps.println(" milliseconds(\"ms\") or seconds(\"s\"). The default units are \"ms\"."); |
94 ps.println(" <count> Number of samples to take before terminating."); |
94 ps.println(" <count> Number of samples to take before terminating."); |
95 ps.println(" -J<flag> Pass <flag> directly to the runtime system."); |
95 ps.println(" -J<flag> Pass <flag> directly to the runtime system."); |
|
96 ps.println(" -? -h --help Prints this help message."); |
|
97 ps.println(" -help Prints this help message."); |
96 |
98 |
97 // undocumented options: |
99 // undocumented options: |
98 // -list [<vmid>] - list counter names |
100 // -list [<vmid>] - list counter names |
99 // -snap <vmid> - snapshot counter values as name=value pairs |
101 // -snap <vmid> - snapshot counter values as name=value pairs |
100 // -name <pattern> - output counters matching given pattern |
102 // -name <pattern> - output counters matching given pattern |
101 // -a - sort in ascending order (default) |
103 // -a - sort in ascending order (default) |
102 // -d - sort in descending order |
104 // -d - sort in descending order |
103 // -v - verbose output (-snap) |
105 // -v - verbose output (-snap) |
104 // -constants - output constants with -name output |
106 // -constants - output constants with -name output |
105 // -strings - output strings with -name output |
107 // -strings - output strings with -name output |
|
108 // -help - same as -? ... |
106 } |
109 } |
107 |
110 |
108 private static int toMillis(String s) throws IllegalArgumentException { |
111 private static int toMillis(String s) throws IllegalArgumentException { |
109 |
112 |
110 String[] unitStrings = { "ms", "s" }; // ordered from most specific to |
113 String[] unitStrings = { "ms", "s" }; // ordered from most specific to |