|
0
|
1 <html>
|
|
|
2 <head>
|
|
|
3 <title>
|
|
|
4 Command line HSDB
|
|
|
5 </title>
|
|
|
6 </head>
|
|
|
7 <body>
|
|
|
8
|
|
|
9 <h1>Command line HSDB</h1>
|
|
|
10 <p>
|
|
|
11 When debugging remote core dumps it is easier to work with command line tools instead of
|
|
|
12 GUI tools. Command line HSDB (CLHSDB) tool is alternative to SA GUI tool HSDB.
|
|
|
13 </p>
|
|
|
14
|
|
|
15 <p>
|
|
|
16 There is also JavaScript based SA command line interface called <a href="jsdb.html">jsdb</a>.
|
|
|
17 But, CLHSDB supports Unix shell-like (or dbx/gdb-like) command line interface with
|
|
|
18 support for output redirection/appending (familiar >, >>), command history and so on.
|
|
|
19 Each CLHSDB command can have zero or more arguments and optionally end with output redirection
|
|
|
20 (or append) to a file. Commands may be stored in a file and run using <b>source</b> command.
|
|
|
21 <b>help</b> command prints usage message for all supported commands (or a specific command)
|
|
|
22 </p>
|
|
|
23
|
|
|
24 <h3>Shell/batch scripts to run command line HSDB</h3>
|
|
|
25
|
|
|
26 <ul>
|
|
|
27 <li>clhsdbproc.sh
|
|
|
28 <li>clhsdbproc64.sh
|
|
|
29 <li>clhsdbwindbg.bat
|
|
|
30 <li>clhsdbwindbg64.bat
|
|
|
31 </ul>
|
|
|
32
|
|
|
33 <h3>Annotated output of CLHSDB help command</h3>
|
|
|
34
|
|
|
35 <pre>
|
|
|
36 <code>
|
|
|
37 Available commands:
|
|
|
38 assert true | false <font color="red">turn on/off asserts in SA code</font>
|
|
|
39 attach pid | exec core <font color="red">attach SA to a process or core</font>
|
|
|
40 class name <font color="red">find a Java class from debuggee and print oop</font>
|
|
|
41 classes <font color="red">print all loaded Java classes with klassOop</font>
|
|
|
42 detach <font color="red">detach SA from current target</font>
|
|
|
43 dis address [ length ] <font color="red">disassemble (sparc/x86) specified number of instructions from given address</font>
|
|
|
44 dumpclass { address | name } [ directory ] <font color="red">dump .class file for given klassOop or class name</font>
|
|
|
45 dumpheap [ file ] <font color="red">dump heap in hprof binary format</font>
|
|
|
46 echo [ true | false ] <font color="red">turn on/off command echo mode</font>
|
|
|
47 examine [ address/count ] | [ address,address] <font color="red">show contents of memory from given address</font>
|
|
|
48 field [ type [ name fieldtype isStatic offset address ] ] <font color="red">print info about a field of HotSpot type</font>
|
|
|
49 findpc address <font color="red">print info. about pointer location</font>
|
|
|
50 flags [ flag ] <font color="red">show all -XX flag name value pairs. or just show given flag</font>
|
|
|
51 help [ command ] <font color="red">print help message for all commands or just given command</font>
|
|
|
52 history <font color="red">show command history. usual !command-number syntax works.</font>
|
|
|
53 inspect expression <font color="red">inspect a given oop</font>
|
|
|
54 jdis address <font color="red">show bytecode disassembly of a given methodOop</font>
|
|
|
55 jhisto <font color="red">show Java heap histogram</font>
|
|
|
56 jseval script <font color="red">evaluate a given string as JavaScript code</font>
|
|
|
57 jsload file <font color="red">load and evaluate a JavaScript file</font>
|
|
|
58 jstack [-v] <font color="red">show Java stack trace of all Java threads. -v is verbose mode</font>
|
|
|
59 livenmethods <font color="red">show all live nmethods</font>
|
|
|
60 mem address [ length ] <font color="red">show contents of memory -- also shows closest ELF/COFF symbol if found</font>
|
|
|
61 pmap <font color="red">show Solaris pmap-like output</font>
|
|
|
62 print expression <font color="red">print given klassOop, methodOop or arbitrary address</font>
|
|
|
63 printas type expression <font color="red">print given address as given HotSpot type. eg. print JavaThread <address></font>
|
|
|
64 printstatics [ type ] <font color="red">print static fields of given HotSpot type (or all types if none specified)</font>
|
|
|
65 pstack [-v] <font color="red">show mixed mode stack trace for all Java, non-Java threads. -v is verbose mode</font>
|
|
|
66 quit <font color="red">quit CLHSDB tool</font>
|
|
|
67 reattach <font color="red">detach and re-attach SA to current target</font>
|
|
|
68 scanoops start end [ type ] <font color="red">scan a Oop from given start to end address</font>
|
|
|
69 search [ heap | codecache | threads ] value <font color="red">search a value in heap or codecache or threads</font>
|
|
|
70 source filename <font color="red">load and execute CLHSDB commands from given file</font>
|
|
|
71 symbol name <font color="red">show address of a given ELF/COFF symbol</font>
|
|
|
72 sysprops <font color="red">show all Java System properties</font>
|
|
|
73 threads <font color="red">show all Java threads</font>
|
|
|
74 tokenize ...
|
|
|
75 type [ type [ name super isOop isInteger isUnsigned size ] ] <font color="red">show info. on HotSpot type</font>
|
|
|
76 universe <font color="red">print gc universe</font>
|
|
|
77 verbose true | false <font color="red">turn on/off verbose mode</font>
|
|
|
78 versioncheck [ true | false ] <font color="red">turn on/off debuggee VM version check</font>
|
|
|
79 whatis address <font color="red">print info about any arbitrary address</font>
|
|
|
80 where { -a | id } <font color="red">print Java stack trace of given Java thread or all Java threads (-a)</font>
|
|
|
81 </code>
|
|
|
82 </pre>
|
|
|
83
|
|
|
84 <h3>JavaScript integration</h3>
|
|
|
85
|
|
|
86 <p>Few CLHSDB commands are already implemented in JavaScript. It is possible to extend CLHSDB command set
|
|
|
87 by implementing more commands in a JavaScript file and by loading it by <b>jsload</b> command. <b>jseval</b>
|
|
|
88 command may be used to evaluate arbitrary JavaScript expression from a string. Any JavaScript function
|
|
|
89 may be exposed as a CLHSDB command by registering it using JavaScript <b><code>registerCommand</code></b>
|
|
|
90 function. This function accepts command name, usage and name of the JavaScript implementation function
|
|
|
91 as arguments.
|
|
|
92 </p>
|
|
|
93
|
|
|
94 <h3>Simple CLHSDB command implemented in JavaScript</h3>
|
|
|
95
|
|
|
96 <b>File: test.js</b>
|
|
|
97 <pre>
|
|
|
98 <code>
|
|
|
99 function helloImpl(name) {
|
|
|
100 println("hello, " + name);
|
|
|
101 }
|
|
|
102
|
|
|
103 // register the above JavaScript function as CLHSDB command
|
|
|
104 registerCommand("hello", "hello name", "helloImpl");
|
|
|
105 </code>
|
|
|
106 </pre>
|
|
|
107 ---------<br>
|
|
|
108
|
|
|
109 "test.js" can be loaded in CLHSDB prompt using <b>jsload</b> command using
|
|
|
110
|
|
|
111 <pre>
|
|
|
112 <code>
|
|
|
113 hsdb> jsload test.js
|
|
|
114 </code>
|
|
|
115 </pre>
|
|
|
116
|
|
|
117 </body>
|
|
|
118 </html>
|
