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1 '\" t |
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20 .\" or visit www.oracle.com if you need additional information or have any |
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21 .\" questions. |
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22 .\" |
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23 .\" Arch: generic |
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24 .\" Software: JDK 8 |
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25 .\" Date: 21 November 2013 |
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26 .\" SectDesc: Troubleshooting Tools |
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27 .\" Title: jstack.1 |
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28 .\" |
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29 .if n .pl 99999 |
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30 .TH jstack 1 "21 November 2013" "JDK 8" "Troubleshooting Tools" |
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31 .\" ----------------------------------------------------------------- |
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32 .\" * Define some portability stuff |
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34 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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35 .\" http://bugs.debian.org/507673 |
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36 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html |
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37 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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38 .ie \n(.g .ds Aq \(aq |
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39 .el .ds Aq ' |
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40 .\" ----------------------------------------------------------------- |
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41 .\" * set default formatting |
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42 .\" ----------------------------------------------------------------- |
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43 .\" disable hyphenation |
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44 .nh |
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45 .\" disable justification (adjust text to left margin only) |
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46 .ad l |
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47 .\" ----------------------------------------------------------------- |
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48 .\" * MAIN CONTENT STARTS HERE * |
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49 .\" ----------------------------------------------------------------- |
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50 |
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51 .SH NAME |
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52 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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53 .SH SYNOPSIS |
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54 .sp |
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55 .nf |
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56 |
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57 \fBjstack\fR [ \fIoptions\fR ] \fIpid\fR |
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58 .fi |
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59 .nf |
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60 |
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61 \fBjstack\fR [ \fIoptions\fR ] \fIexecutable\fR \fIcore\fR |
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62 .fi |
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63 .nf |
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64 |
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65 \fBjstack\fR [ \fIoptions\fR ] [ \fIserver\-id\fR@ ] \fIremote\-hostname\-or\-IP\fR |
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66 .fi |
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67 .sp |
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68 .TP |
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69 \fIoptions\fR |
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70 The command-line options\&. See Options\&. |
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71 .TP |
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72 \fIpid\fR |
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73 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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74 .TP |
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75 \fIexecutable\fR |
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76 The Java executable from which the core dump was produced\&. |
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77 .TP |
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78 \fIcore\fR |
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79 The core file for which the stack trace is to be printed\&. |
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80 .TP |
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81 \fIremote-hostname-or-IP\fR |
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82 The remote debug server \f3hostname\fR or \f3IP\fR address\&. See jsadebugd(1)\&. |
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83 .TP |
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84 \fIserver-id\fR |
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85 An optional unique ID to use when multiple debug servers are running on the same remote host\&. |
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86 .SH DESCRIPTION |
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87 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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88 .PP |
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89 \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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90 .sp |
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91 .nf |
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92 \f3set PATH=<jdk>\ejre\ebin\eclient;%PATH%\fP |
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93 .fi |
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94 .nf |
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95 \f3\fP |
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96 .fi |
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97 .sp |
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98 .SH OPTIONS |
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99 .TP |
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100 -F |
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101 .br |
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102 Force a stack dump when \f3jstack\fR [\f3-l\fR] \f3pid\fR does not respond\&. |
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103 .TP |
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104 -l |
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105 .br |
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106 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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107 .TP |
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108 -m |
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109 .br |
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110 Prints a mixed mode stack trace that has both Java and native C/C++ frames\&. |
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111 .TP |
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112 -h |
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113 .br |
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114 Prints a help message\&. |
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115 .TP |
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116 -help |
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117 .br |
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118 Prints a help message\&. |
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119 .SH KNOWN\ BUGS |
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120 In mixed mode stack trace, the \f3-m\fR option does not work with the remote debug server\&. |
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121 .SH SEE\ ALSO |
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122 .TP 0.2i |
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123 \(bu |
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124 pstack(1) |
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125 .TP 0.2i |
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126 \(bu |
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127 C++filt(1) |
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128 .TP 0.2i |
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129 \(bu |
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130 jps(1) |
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131 .TP 0.2i |
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132 \(bu |
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133 jsadebugd(1) |
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134 .RE |
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135 .br |
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136 'pl 8.5i |
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137 'bp |