2037N/A." Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.

2590N/A." DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

2037N/A."

2037N/A." This code is free software; you can redistribute it and/or modify it

2037N/A." under the terms of the GNU General Public License version 2 only, as

2037N/A." published by the Free Software Foundation.

2037N/A."

2037N/A." This code is distributed in the hope that it will be useful, but WITHOUT

2037N/A." ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

2037N/A." FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

2037N/A." version 2 for more details (a copy is included in the LICENSE file that

2037N/A." accompanied this code).

2037N/A."

2037N/A." You should have received a copy of the GNU General Public License version

2037N/A." 2 along with this work; if not, write to the Free Software Foundation,

2037N/A." Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

2037N/A."

2037N/A." Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

2037N/A." or visit www.oracle.com if you need additional information or have any

2037N/A." questions.

2037N/A."

2037N/A.TH jstack 1 "10 May 2011"

2037N/A

2037N/A.LP

2037N/A.SH "Name"

2037N/Ajstack \- Stack Trace

2037N/A.br

2037N/A

2037N/A.LP

2037N/A.SH "SYNOPSIS"

2037N/A.LP

2037N/A.nf

2037N/A\f3

2037N/A.fl

2037N/A\fP\f3jstack\fP [ option ] pid

2037N/A.fl

2037N/A\f3jstack\fP [ option ] executable core

2037N/A.fl

2037N/A\f3jstack\fP [ option ] [server\-id@]remote\-hostname\-or\-IP

2037N/A.fl

2037N/A.fi

2037N/A

2037N/A.LP

2037N/A.SH "PARAMETERS"

2037N/A.LP

2037N/A.LP

2602N/AOptions are mutually exclusive. Option, if used, should follow immediately after the command name. See OPTIONS.

2037N/A.LP

2037N/A.RS 3

2037N/A.TP 3

2037N/Apid

2037N/Aprocess id for which the stack trace is to be printed. The process must be a Java process. To get a list of Java processes running on a machine, jps(1) may be used.

2037N/A.RE

2037N/A

2037N/A.LP

2037N/A.RS 3

2037N/A.TP 3

2037N/Aexecutable

2037N/AJava executable from which the core dump was produced.

2037N/A.br

2037N/A.TP 3

2037N/Acore

2037N/Acore file for which the stack trace is to be printed.

2910N/A.br

2910N/A.TP 3

2910N/Aremote\-hostname\-or\-IP

2910N/Aremote debug server's (see jsadebugd(1)) hostname or IP address.

2910N/A.br

2910N/A.TP 3

2910N/Aserver\-id

2910N/Aoptional unique id, if multiple debug servers are running on the same remote host.

2910N/A.RE

2910N/A

2910N/A.LP

2910N/A.SH "DESCRIPTION"

2910N/A.LP

2910N/A.LP

2910N/A\f3jstack\fP prints Java stack traces of Java threads for a given Java process or core file or a remote debug server. For each Java frame, the full class name, method name, 'bci' (byte code index) and line number, if available, are printed. With the \-m option, jstack prints both Java and native frames of all threads along with the 'pc' (program counter). For each native frame, the closest native symbol to 'pc', if available, is printed. C++ mangled names are not demangled. To demangle C++ names, the output of this command may be piped to \f3c++filt\fP. If the given process is running on a 64\-bit VM, you may need to specify the \f2\-J\-d64\fP option, e.g.:

2910N/A.br

2910N/A

2910N/A.LP

2910N/A.nf

2910N/A\f3

2910N/A.fl

2910N/Ajstack \-J\-d64 \-m pid

2910N/A.fl

2910N/A\fP

2037N/A.fi

2037N/A

2037N/A.LP

2037N/A.LP

2037N/A\f3NOTE\fP \- This utility is unsupported and may or may not be available in future versions of the JDK. In Windows Systems where dbgeng.dll is not present, 'Debugging Tools For Windows' needs to be installed to have these tools working. Also, \f2PATH\fP environment variable should contain the location of \f2jvm.dll\fP used by the target process or the location from which the Crash Dump file was produced.

2037N/A.LP

2037N/A.LP

2037N/AFor example, \f2set PATH=<jdk>\\jre\\bin\\client;%PATH%\fP

2037N/A.LP

2037N/A.SH "OPTIONS"

2037N/A.LP

2037N/A.RS 3

2037N/A.TP 3

2037N/A\-F

2037N/AForce a stack dump when 'jstack [\-l] pid' does not respond.

2037N/A.TP 3

2037N/A\-l

2037N/ALong listing. Prints additional information about locks such as list of owned java.util.concurrent

2037N/A.na

2037N/A\f2ownable synchronizers\fP @

2037N/A.fi

2037N/Ahttp://download.oracle.com/javase/7/docs/api/java/util/concurrent/locks/AbstractOwnableSynchronizer.html.

2037N/A.TP 3

2037N/A\-m

prints mixed mode (both Java and native C/C++ frames) stack trace.

.TP 3

\-h

prints a help message.

.br

.br

.TP 3

\-help

prints a help message

.br

.RE

.LP

.SH "SEE ALSO"

.LP

.RS 3

.TP 2

o

pstack(1)

.TP 2

o

c++filt(1)

.TP 2

o

jps(1)

.TP 2

o

jsadebugd(1)

.RE

.LP

.SH "KNOWN BUGS"

.LP

.LP

Mixed mode stack trace, the \-m option, does not work with the remote debug server.

.LP