Copyright (c) 2004, 2020, 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.

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.

Automatically generated by Pandoc 2.3.1

"JSTACK" "1" "2020" "JDK 15" "JDK Commands"
NAME

jstack - print Java stack traces of Java threads for a specified Java process

SYNOPSIS

\f[B]Note:\f[R] This command is experimental and unsupported.

\f[CB]jstack\f[R] [\f[I]options\f[R]] \f[I]pid\f[R]

\f[I]options\f[R] This represents the \f[CB]jstack\f[R] command-line options. See \f[B]Options for the jstack Command\f[R].

\f[I]pid\f[R] 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 either the \f[CB]ps\f[R] command or, if the JVM processes are not running in a separate docker instance, the \f[B]jps\f[R] command.

DESCRIPTION

The \f[CB]jstack\f[R] command prints Java stack traces of Java threads for a specified Java process. For each Java frame, the full class name, method name, byte code index (BCI), and line number, when available, are printed. C++ mangled names aren\[aq]t demangled. To demangle C++ names, the output of this command can be piped to \f[CB]c++filt\f[R]. When the specified process is running on a 64-bit JVM, you might need to specify the \f[CB]-J-d64\f[R] option, for example: \f[CB]jstack -J-d64\f[R] \f[I]pid\f[R].

\f[B]Note:\f[R]

This command is unsupported and might not be available in future releases of the JDK. In Windows Systems where the \f[CB]dbgeng.dll\f[R] file isn\[aq]t present, the Debugging Tools for Windows must be installed so that these tools work. The \f[CB]PATH\f[R] environment variable needs to contain the location of the \f[CB]jvm.dll\f[R] that is used by the target process, or the location from which the core dump file was produced.

OPTIONS FOR THE JSTACK COMMAND

\f[CB]-l\f[R] The long listing option prints additional information about locks.

\f[CB]-h\f[R] or \f[CB]-help\f[R] Prints a help message.