69 lines
2.1 KiB
Groff
Executable File
69 lines
2.1 KiB
Groff
Executable File
.\" Automatically generated by Pandoc 2.19.2
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.\"
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.\" Define V font for inline verbatim, using C font in formats
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.\" that render this, and otherwise B font.
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.\}
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.TH "JSTACK" "1" "2025" "JDK 24.0.2" "JDK Commands"
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.hy
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.SH NAME
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.PP
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jstack - print Java stack traces of Java threads for a specified Java
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process
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.SH SYNOPSIS
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.PP
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\f[B]Note:\f[R] This command is experimental and unsupported.
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.PP
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\f[V]jstack\f[R] [\f[I]options\f[R]] \f[I]pid\f[R]
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.TP
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\f[I]options\f[R]
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This represents the \f[V]jstack\f[R] command-line options.
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See \f[B]Options for the jstack Command\f[R].
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.TP
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\f[I]pid\f[R]
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The process ID for which the stack trace is printed.
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The process must be a Java process.
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To get a list of Java processes running on a machine, use either the
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\f[V]ps\f[R] command or, if the JVM processes are not running in a
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separate docker instance, the \f[B]jps\f[R] command.
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.SH DESCRIPTION
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.PP
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The \f[V]jstack\f[R] command prints Java stack traces of Java threads
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for a specified Java process.
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For each Java frame, the full class name, method name, byte code index
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(BCI), and line number, when available, are printed.
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C++ mangled names aren\[aq]t demangled.
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To demangle C++ names, the output of this command can be piped to
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\f[V]c++filt\f[R].
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When the specified process is running on a 64-bit JVM, you might need to
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specify the \f[V]-J-d64\f[R] option, for example:
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\f[V]jstack -J-d64\f[R] \f[I]pid\f[R].
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.PP
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\f[B]Note:\f[R]
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.PP
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This command is unsupported and might not be available in future
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releases of the JDK.
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In Windows Systems where the \f[V]dbgeng.dll\f[R] file isn\[aq]t
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present, the Debugging Tools for Windows must be installed so that these
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tools work.
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The \f[V]PATH\f[R] environment variable needs to contain the location of
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the \f[V]jvm.dll\f[R] that is used by the target process, or the
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location from which the core dump file was produced.
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.SH OPTIONS FOR THE JSTACK COMMAND
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.TP
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\f[V]-l\f[R]
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The long listing option prints additional information about locks.
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.TP
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\f[V]-h\f[R] or \f[V]-help\f[R]
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Prints a help message.
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