author | ysuenaga |
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.\" Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved. |
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.\" DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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.\" |
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.\" This code is free software; you can redistribute it and/or modify it |
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.\" under the terms of the GNU General Public License version 2 only, as |
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.\" published by the Free Software Foundation. |
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.\" |
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.\" This code is distributed in the hope that it will be useful, but WITHOUT |
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.\" ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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.\" FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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.\" version 2 for more details (a copy is included in the LICENSE file that |
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.\" accompanied this code). |
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.\" |
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.\" You should have received a copy of the GNU General Public License version |
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.\" 2 along with this work; if not, write to the Free Software Foundation, |
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.\" Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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.\" |
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.\" Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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.\" or visit www.oracle.com if you need additional information or have any |
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.\" questions. |
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.\" |
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.\" Arch: generic |
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.\" Software: JDK 8 |
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.\" Date: 21 November 2013 |
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.\" SectDesc: Troubleshooting Tools |
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.\" Title: jstack.1 |
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.\" |
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.if n .pl 99999 |
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.TH jstack 1 "21 November 2013" "JDK 8" "Troubleshooting Tools" |
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.\" ----------------------------------------------------------------- |
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.\" * Define some portability stuff |
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.\" ----------------------------------------------------------------- |
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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.\" http://bugs.debian.org/507673 |
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html |
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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.ie \n(.g .ds Aq \(aq |
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.el .ds Aq ' |
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.\" ----------------------------------------------------------------- |
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.\" * set default formatting |
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.\" ----------------------------------------------------------------- |
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.\" disable hyphenation |
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.nh |
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.\" disable justification (adjust text to left margin only) |
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.ad l |
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.\" ----------------------------------------------------------------- |
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.\" * MAIN CONTENT STARTS HERE * |
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.\" ----------------------------------------------------------------- |
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.SH NAME |
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jstack \- Prints Java thread stack traces for a Java process, core file, or remote debug server\&. This command is experimental and unsupported\&. |
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.SH SYNOPSIS |
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.sp |
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.nf |
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\fBjstack\fR [ \fIoptions\fR ] \fIpid\fR |
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.fi |
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.nf |
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\fBjstack\fR [ \fIoptions\fR ] \fIexecutable\fR \fIcore\fR |
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.fi |
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.nf |
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\fBjstack\fR [ \fIoptions\fR ] [ \fIserver\-id\fR@ ] \fIremote\-hostname\-or\-IP\fR |
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.fi |
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.sp |
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.TP |
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\fIoptions\fR |
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The command-line options\&. See Options\&. |
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.TP |
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\fIpid\fR |
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The process ID for which the stack trace is printed\&. The process must be a Java process\&. To get a list of Java processes running on a machine, use the jps(1) command\&. |
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.TP |
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\fIexecutable\fR |
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The Java executable from which the core dump was produced\&. |
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.TP |
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\fIcore\fR |
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The core file for which the stack trace is to be printed\&. |
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.TP |
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\fIremote-hostname-or-IP\fR |
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The remote debug server \f3hostname\fR or \f3IP\fR address\&. See jsadebugd(1)\&. |
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.TP |
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\fIserver-id\fR |
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An optional unique ID to use when multiple debug servers are running on the same remote host\&. |
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.SH DESCRIPTION |
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The \f3jstack\fR command prints Java stack traces of Java threads for a specified Java process, core file, or remote debug server\&. For each Java frame, the full class name, method name, byte code index (BCI), and line number, when available, are printed\&. With the \f3-m\fR option, the \f3jstack\fR command prints both Java and native frames of all threads with the program counter (PC)\&. For each native frame, the closest native symbol to PC, when available, is printed\&. C++ mangled names are not demangled\&. To demangle C++ names, the output of this command can be piped to \f3c++filt\fR\&. When the specified process is running on a 64-bit Java Virtual Machine, you might need to specify the \f3-J-d64\fR option, for example: \f3jstack -J-d64 -m pid\fR\&. |
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.PP |
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\fINote:\fR This utility is unsupported and might not be available in future release of the JDK\&. In Windows Systems where the dbgeng\&.dll file is not present, Debugging Tools For Windows must be installed so these tools work\&. The \f3PATH\fR environment variable needs to contain the location of the jvm\&.dll that is used by the target process, or the location from which the crash dump file was produced\&. For example: |
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.sp |
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.nf |
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\f3set PATH=<jdk>\ejre\ebin\eclient;%PATH%\fP |
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.fi |
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.nf |
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\f3\fP |
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.fi |
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.sp |
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.SH OPTIONS |
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.TP |
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-F |
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.br |
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Force a stack dump when \f3jstack\fR [\f3-l\fR] \f3pid\fR does not respond\&. |
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.TP |
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-l |
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.br |
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Long listing\&. Prints additional information about locks such as a list of owned \f3java\&.util\&.concurrent\fR ownable synchronizers\&. See the \f3AbstractOwnableSynchronizer\fR class description at http://docs\&.oracle\&.com/javase/8/docs/api/java/util/concurrent/locks/AbstractOwnableSynchronizer\&.html |
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.TP |
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-m |
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.br |
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Prints a mixed mode stack trace that has both Java and native C/C++ frames\&. |
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.TP |
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-h |
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.br |
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Prints a help message\&. |
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.TP |
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-help |
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.br |
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Prints a help message\&. |
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.SH KNOWN\ BUGS |
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In mixed mode stack trace, the \f3-m\fR option does not work with the remote debug server\&. |
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.SH SEE\ ALSO |
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.TP 0.2i |
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\(bu |
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pstack(1) |
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.TP 0.2i |
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\(bu |
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C++filt(1) |
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.TP 0.2i |
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\(bu |
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jps(1) |
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.TP 0.2i |
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\(bu |
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jsadebugd(1) |
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.RE |
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.br |
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'pl 8.5i |
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'bp |