| <html lang="en"> |
| <head> |
| <title>GDB/MI Thread Commands - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="GDB_002fMI.html#GDB_002fMI" title="GDB/MI"> |
| <link rel="prev" href="GDB_002fMI-Program-Context.html#GDB_002fMI-Program-Context" title="GDB/MI Program Context"> |
| <link rel="next" href="GDB_002fMI-Program-Execution.html#GDB_002fMI-Program-Execution" title="GDB/MI Program Execution"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being ``Free Software'' and ``Free Software Needs |
| Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,'' |
| and with the Back-Cover Texts as in (a) below. |
| |
| (a) The FSF's Back-Cover Text is: ``You are free to copy and modify |
| this GNU Manual. Buying copies from GNU Press supports the FSF in |
| developing GNU and promoting software freedom.''--> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="GDB%2fMI-Thread-Commands"></a> |
| <a name="GDB_002fMI-Thread-Commands"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="GDB_002fMI-Program-Execution.html#GDB_002fMI-Program-Execution">GDB/MI Program Execution</a>, |
| Previous: <a rel="previous" accesskey="p" href="GDB_002fMI-Program-Context.html#GDB_002fMI-Program-Context">GDB/MI Program Context</a>, |
| Up: <a rel="up" accesskey="u" href="GDB_002fMI.html#GDB_002fMI">GDB/MI</a> |
| <hr> |
| </div> |
| |
| <h3 class="section">27.10 <span class="sc">gdb/mi</span> Thread Commands</h3> |
| |
| <h4 class="subheading">The <code>-thread-info</code> Command</h4> |
| |
| <p><a name="index-g_t_002dthread_002dinfo-2048"></a> |
| |
| <h5 class="subsubheading">Synopsis</h5> |
| |
| <pre class="smallexample"> -thread-info [ <var>thread-id</var> ] |
| </pre> |
| <p>Reports information about either a specific thread, if |
| the <var>thread-id</var> parameter is present, or about all |
| threads. When printing information about all threads, |
| also reports the current thread. |
| |
| <h5 class="subsubheading"><span class="sc">gdb</span> Command</h5> |
| |
| <p>The ‘<samp><span class="samp">info thread</span></samp>’ command prints the same information |
| about all threads. |
| |
| <h5 class="subsubheading">Example</h5> |
| |
| <pre class="smallexample"> -thread-info |
| ^done,threads=[ |
| {id="2",target-id="Thread 0xb7e14b90 (LWP 21257)", |
| frame={level="0",addr="0xffffe410",func="__kernel_vsyscall",args=[]},state="running"}, |
| {id="1",target-id="Thread 0xb7e156b0 (LWP 21254)", |
| frame={level="0",addr="0x0804891f",func="foo",args=[{name="i",value="10"}], |
| file="/tmp/a.c",fullname="/tmp/a.c",line="158"},state="running"}], |
| current-thread-id="1" |
| (gdb) |
| </pre> |
| <p>The ‘<samp><span class="samp">state</span></samp>’ field may have the following values: |
| |
| <dl> |
| <dt><code>stopped</code><dd>The thread is stopped. Frame information is available for stopped |
| threads. |
| |
| <br><dt><code>running</code><dd>The thread is running. There's no frame information for running |
| threads. |
| |
| </dl> |
| |
| <h4 class="subheading">The <code>-thread-list-ids</code> Command</h4> |
| |
| <p><a name="index-g_t_002dthread_002dlist_002dids-2049"></a> |
| |
| <h5 class="subsubheading">Synopsis</h5> |
| |
| <pre class="smallexample"> -thread-list-ids |
| </pre> |
| <p>Produces a list of the currently known <span class="sc">gdb</span> thread ids. At the |
| end of the list it also prints the total number of such threads. |
| |
| <p>This command is retained for historical reasons, the |
| <code>-thread-info</code> command should be used instead. |
| |
| <h5 class="subsubheading"><span class="sc">gdb</span> Command</h5> |
| |
| <p>Part of ‘<samp><span class="samp">info threads</span></samp>’ supplies the same information. |
| |
| <h5 class="subsubheading">Example</h5> |
| |
| <pre class="smallexample"> (gdb) |
| -thread-list-ids |
| ^done,thread-ids={thread-id="3",thread-id="2",thread-id="1"}, |
| current-thread-id="1",number-of-threads="3" |
| (gdb) |
| </pre> |
| <h4 class="subheading">The <code>-thread-select</code> Command</h4> |
| |
| <p><a name="index-g_t_002dthread_002dselect-2050"></a> |
| |
| <h5 class="subsubheading">Synopsis</h5> |
| |
| <pre class="smallexample"> -thread-select <var>threadnum</var> |
| </pre> |
| <p>Make <var>threadnum</var> the current thread. It prints the number of the new |
| current thread, and the topmost frame for that thread. |
| |
| <p>This command is deprecated in favor of explicitly using the |
| ‘<samp><span class="samp">--thread</span></samp>’ option to each command. |
| |
| <h5 class="subsubheading"><span class="sc">gdb</span> Command</h5> |
| |
| <p>The corresponding <span class="sc">gdb</span> command is ‘<samp><span class="samp">thread</span></samp>’. |
| |
| <h5 class="subsubheading">Example</h5> |
| |
| <pre class="smallexample"> (gdb) |
| -exec-next |
| ^running |
| (gdb) |
| *stopped,reason="end-stepping-range",thread-id="2",line="187", |
| file="../../../devo/gdb/testsuite/gdb.threads/linux-dp.c" |
| (gdb) |
| -thread-list-ids |
| ^done, |
| thread-ids={thread-id="3",thread-id="2",thread-id="1"}, |
| number-of-threads="3" |
| (gdb) |
| -thread-select 3 |
| ^done,new-thread-id="3", |
| frame={level="0",func="vprintf", |
| args=[{name="format",value="0x8048e9c \"%*s%c %d %c\\n\""}, |
| {name="arg",value="0x2"}],file="vprintf.c",line="31"} |
| (gdb) |
| </pre> |
| <!-- %%%%%%%%%%%%%%%%%%%%%%%%%%%% SECTION %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% --> |
| </body></html> |
| |
