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<a name="GDB_002fMI-Miscellaneous-Commands"></a>
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<div class="header">
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<p>
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Previous: <a href="GDB_002fMI-Support-Commands.html#GDB_002fMI-Support-Commands" accesskey="p" rel="previous">GDB/MI Support Commands</a>, Up: <a href="GDB_002fMI.html#GDB_002fMI" accesskey="u" rel="up">GDB/MI</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Miscellaneous-GDB_002fMI-Commands"></a>
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<h3 class="section">27.24 Miscellaneous <small>GDB/MI</small> Commands</h3>
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|
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<a name="The-_002dgdb_002dexit-Command"></a>
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<h4 class="subheading">The <code>-gdb-exit</code> Command</h4>
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<a name="index-_002dgdb_002dexit"></a>
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|
<a name="Synopsis-104"></a>
|
<h4 class="subsubheading">Synopsis</h4>
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|
<div class="smallexample">
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<pre class="smallexample"> -gdb-exit
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</pre></div>
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|
<p>Exit <small>GDB</small> immediately.
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</p>
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<a name="GDB-Command-86"></a>
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<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
|
<p>Approximately corresponds to ‘<samp>quit</samp>’.
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</p>
|
<a name="Example-86"></a>
|
<h4 class="subsubheading">Example</h4>
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|
<div class="smallexample">
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<pre class="smallexample">(gdb)
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-gdb-exit
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^exit
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</pre></div>
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<a name="The-_002dgdb_002dset-Command"></a>
|
<h4 class="subheading">The <code>-gdb-set</code> Command</h4>
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<a name="index-_002dgdb_002dset"></a>
|
|
<a name="Synopsis-105"></a>
|
<h4 class="subsubheading">Synopsis</h4>
|
|
<div class="smallexample">
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<pre class="smallexample"> -gdb-set
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</pre></div>
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<p>Set an internal <small>GDB</small> variable.
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</p>
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<a name="GDB-Command-87"></a>
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>set</samp>’.
|
</p>
|
<a name="Example-87"></a>
|
<h4 class="subsubheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">(gdb)
|
-gdb-set $foo=3
|
^done
|
(gdb)
|
</pre></div>
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|
|
<a name="The-_002dgdb_002dshow-Command"></a>
|
<h4 class="subheading">The <code>-gdb-show</code> Command</h4>
|
<a name="index-_002dgdb_002dshow"></a>
|
|
<a name="Synopsis-106"></a>
|
<h4 class="subsubheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample"> -gdb-show
|
</pre></div>
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|
<p>Show the current value of a <small>GDB</small> variable.
|
</p>
|
<a name="GDB-Command-88"></a>
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>show</samp>’.
|
</p>
|
<a name="Example-88"></a>
|
<h4 class="subsubheading">Example</h4>
|
|
<div class="smallexample">
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<pre class="smallexample">(gdb)
|
-gdb-show annotate
|
^done,value="0"
|
(gdb)
|
</pre></div>
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|
|
|
<a name="The-_002dgdb_002dversion-Command"></a>
|
<h4 class="subheading">The <code>-gdb-version</code> Command</h4>
|
<a name="index-_002dgdb_002dversion"></a>
|
|
<a name="Synopsis-107"></a>
|
<h4 class="subsubheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample"> -gdb-version
|
</pre></div>
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|
<p>Show version information for <small>GDB</small>. Used mostly in testing.
|
</p>
|
<a name="GDB-Command-89"></a>
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
|
<p>The <small>GDB</small> equivalent is ‘<samp>show version</samp>’. <small>GDB</small> by
|
default shows this information when you start an interactive session.
|
</p>
|
<a name="Example-89"></a>
|
<h4 class="subsubheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">(gdb)
|
-gdb-version
|
~GNU gdb 5.2.1
|
~Copyright 2000 Free Software Foundation, Inc.
|
~GDB is free software, covered by the GNU General Public License, and
|
~you are welcome to change it and/or distribute copies of it under
|
~ certain conditions.
|
~Type "show copying" to see the conditions.
|
~There is absolutely no warranty for GDB. Type "show warranty" for
|
~ details.
|
~This GDB was configured as
|
"--host=sparc-sun-solaris2.5.1 --target=ppc-eabi".
|
^done
|
(gdb)
|
</pre></div>
|
|
<a name="The-_002dlist_002dthread_002dgroups-Command"></a>
|
<h4 class="subheading">The <code>-list-thread-groups</code> Command</h4>
|
<a name="index-_002dlist_002dthread_002dgroups"></a>
|
|
<a name="Synopsis-108"></a>
|
<h4 class="subheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-list-thread-groups [ --available ] [ --recurse 1 ] [ <var>group</var> ... ]
|
</pre></div>
|
|
<p>Lists thread groups (see <a href="Thread-groups.html#Thread-groups">Thread groups</a>). When a single thread
|
group is passed as the argument, lists the children of that group.
|
When several thread group are passed, lists information about those
|
thread groups. Without any parameters, lists information about all
|
top-level thread groups.
|
</p>
|
<p>Normally, thread groups that are being debugged are reported.
|
With the ‘<samp>--available</samp>’ option, <small>GDB</small> reports thread groups
|
available on the target.
|
</p>
|
<p>The output of this command may have either a ‘<samp>threads</samp>’ result or
|
a ‘<samp>groups</samp>’ result. The ‘<samp>thread</samp>’ result has a list of tuples
|
as value, with each tuple describing a thread (see <a href="GDB_002fMI-Thread-Information.html#GDB_002fMI-Thread-Information">GDB/MI Thread Information</a>). The ‘<samp>groups</samp>’ result has a list of tuples as value,
|
each tuple describing a thread group. If top-level groups are
|
requested (that is, no parameter is passed), or when several groups
|
are passed, the output always has a ‘<samp>groups</samp>’ result. The format
|
of the ‘<samp>group</samp>’ result is described below.
|
</p>
|
<p>To reduce the number of roundtrips it’s possible to list thread groups
|
together with their children, by passing the ‘<samp>--recurse</samp>’ option
|
and the recursion depth. Presently, only recursion depth of 1 is
|
permitted. If this option is present, then every reported thread group
|
will also include its children, either as ‘<samp>group</samp>’ or
|
‘<samp>threads</samp>’ field.
|
</p>
|
<p>In general, any combination of option and parameters is permitted, with
|
the following caveats:
|
</p>
|
<ul>
|
<li> When a single thread group is passed, the output will typically
|
be the ‘<samp>threads</samp>’ result. Because threads may not contain
|
anything, the ‘<samp>recurse</samp>’ option will be ignored.
|
|
</li><li> When the ‘<samp>--available</samp>’ option is passed, limited information may
|
be available. In particular, the list of threads of a process might
|
be inaccessible. Further, specifying specific thread groups might
|
not give any performance advantage over listing all thread groups.
|
The frontend should assume that ‘<samp>-list-thread-groups --available</samp>’
|
is always an expensive operation and cache the results.
|
|
</li></ul>
|
|
<p>The ‘<samp>groups</samp>’ result is a list of tuples, where each tuple may
|
have the following fields:
|
</p>
|
<dl compact="compact">
|
<dt><code>id</code></dt>
|
<dd><p>Identifier of the thread group. This field is always present.
|
The identifier is an opaque string; frontends should not try to
|
convert it to an integer, even though it might look like one.
|
</p>
|
</dd>
|
<dt><code>type</code></dt>
|
<dd><p>The type of the thread group. At present, only ‘<samp>process</samp>’ is a
|
valid type.
|
</p>
|
</dd>
|
<dt><code>pid</code></dt>
|
<dd><p>The target-specific process identifier. This field is only present
|
for thread groups of type ‘<samp>process</samp>’ and only if the process exists.
|
</p>
|
</dd>
|
<dt><code>exit-code</code></dt>
|
<dd><p>The exit code of this group’s last exited thread, formatted in octal.
|
This field is only present for thread groups of type ‘<samp>process</samp>’ and
|
only if the process is not running.
|
</p>
|
</dd>
|
<dt><code>num_children</code></dt>
|
<dd><p>The number of children this thread group has. This field may be
|
absent for an available thread group.
|
</p>
|
</dd>
|
<dt><code>threads</code></dt>
|
<dd><p>This field has a list of tuples as value, each tuple describing a
|
thread. It may be present if the ‘<samp>--recurse</samp>’ option is
|
specified, and it’s actually possible to obtain the threads.
|
</p>
|
</dd>
|
<dt><code>cores</code></dt>
|
<dd><p>This field is a list of integers, each identifying a core that one
|
thread of the group is running on. This field may be absent if
|
such information is not available.
|
</p>
|
</dd>
|
<dt><code>executable</code></dt>
|
<dd><p>The name of the executable file that corresponds to this thread group.
|
The field is only present for thread groups of type ‘<samp>process</samp>’,
|
and only if there is a corresponding executable file.
|
</p>
|
</dd>
|
</dl>
|
|
<a name="Example-90"></a>
|
<h4 class="subheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">gdb
|
-list-thread-groups
|
^done,groups=[{id="17",type="process",pid="yyy",num_children="2"}]
|
-list-thread-groups 17
|
^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",arch="i386:x86_64"},state="running"}]]
|
-list-thread-groups --available
|
^done,groups=[{id="17",type="process",pid="yyy",num_children="2",cores=[1,2]}]
|
-list-thread-groups --available --recurse 1
|
^done,groups=[{id="17", types="process",pid="yyy",num_children="2",cores=[1,2],
|
threads=[{id="1",target-id="Thread 0xb7e14b90",cores=[1]},
|
{id="2",target-id="Thread 0xb7e14b90",cores=[2]}]},..]
|
-list-thread-groups --available --recurse 1 17 18
|
^done,groups=[{id="17", types="process",pid="yyy",num_children="2",cores=[1,2],
|
threads=[{id="1",target-id="Thread 0xb7e14b90",cores=[1]},
|
{id="2",target-id="Thread 0xb7e14b90",cores=[2]}]},...]
|
</pre></div>
|
|
<a name="The-_002dinfo_002dos-Command"></a>
|
<h4 class="subheading">The <code>-info-os</code> Command</h4>
|
<a name="index-_002dinfo_002dos"></a>
|
|
<a name="Synopsis-109"></a>
|
<h4 class="subsubheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-info-os [ <var>type</var> ]
|
</pre></div>
|
|
<p>If no argument is supplied, the command returns a table of available
|
operating-system-specific information types. If one of these types is
|
supplied as an argument <var>type</var>, then the command returns a table
|
of data of that type.
|
</p>
|
<p>The types of information available depend on the target operating
|
system.
|
</p>
|
<a name="GDB-Command-90"></a>
|
<h4 class="subsubheading"><small>GDB</small> Command</h4>
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>info os</samp>’.
|
</p>
|
<a name="Example-91"></a>
|
<h4 class="subsubheading">Example</h4>
|
|
<p>When run on a <small>GNU</small>/Linux system, the output will look something
|
like this:
|
</p>
|
<div class="smallexample">
|
<pre class="smallexample">gdb
|
-info-os
|
^done,OSDataTable={nr_rows="10",nr_cols="3",
|
hdr=[{width="10",alignment="-1",col_name="col0",colhdr="Type"},
|
{width="10",alignment="-1",col_name="col1",colhdr="Description"},
|
{width="10",alignment="-1",col_name="col2",colhdr="Title"}],
|
body=[item={col0="cpus",col1="Listing of all cpus/cores on the system",
|
col2="CPUs"},
|
item={col0="files",col1="Listing of all file descriptors",
|
col2="File descriptors"},
|
item={col0="modules",col1="Listing of all loaded kernel modules",
|
col2="Kernel modules"},
|
item={col0="msg",col1="Listing of all message queues",
|
col2="Message queues"},
|
item={col0="processes",col1="Listing of all processes",
|
col2="Processes"},
|
item={col0="procgroups",col1="Listing of all process groups",
|
col2="Process groups"},
|
item={col0="semaphores",col1="Listing of all semaphores",
|
col2="Semaphores"},
|
item={col0="shm",col1="Listing of all shared-memory regions",
|
col2="Shared-memory regions"},
|
item={col0="sockets",col1="Listing of all internet-domain sockets",
|
col2="Sockets"},
|
item={col0="threads",col1="Listing of all threads",
|
col2="Threads"}]
|
gdb
|
-info-os processes
|
^done,OSDataTable={nr_rows="190",nr_cols="4",
|
hdr=[{width="10",alignment="-1",col_name="col0",colhdr="pid"},
|
{width="10",alignment="-1",col_name="col1",colhdr="user"},
|
{width="10",alignment="-1",col_name="col2",colhdr="command"},
|
{width="10",alignment="-1",col_name="col3",colhdr="cores"}],
|
body=[item={col0="1",col1="root",col2="/sbin/init",col3="0"},
|
item={col0="2",col1="root",col2="[kthreadd]",col3="1"},
|
item={col0="3",col1="root",col2="[ksoftirqd/0]",col3="0"},
|
...
|
item={col0="26446",col1="stan",col2="bash",col3="0"},
|
item={col0="28152",col1="stan",col2="bash",col3="1"}]}
|
(gdb)
|
</pre></div>
|
|
<p>(Note that the MI output here includes a <code>"Title"</code> column that
|
does not appear in command-line <code>info os</code>; this column is useful
|
for MI clients that want to enumerate the types of data, such as in a
|
popup menu, but is needless clutter on the command line, and
|
<code>info os</code> omits it.)
|
</p>
|
<a name="The-_002dadd_002dinferior-Command"></a>
|
<h4 class="subheading">The <code>-add-inferior</code> Command</h4>
|
<a name="index-_002dadd_002dinferior"></a>
|
|
<a name="Synopsis-110"></a>
|
<h4 class="subheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-add-inferior
|
</pre></div>
|
|
<p>Creates a new inferior (see <a href="Inferiors-Connections-and-Programs.html#Inferiors-Connections-and-Programs">Inferiors Connections and Programs</a>). The created
|
inferior is not associated with any executable. Such association may
|
be established with the ‘<samp>-file-exec-and-symbols</samp>’ command
|
(see <a href="GDB_002fMI-File-Commands.html#GDB_002fMI-File-Commands">GDB/MI File Commands</a>). The command response has a single
|
field, ‘<samp>inferior</samp>’, whose value is the identifier of the
|
thread group corresponding to the new inferior.
|
</p>
|
<a name="Example-92"></a>
|
<h4 class="subheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">gdb
|
-add-inferior
|
^done,inferior="i3"
|
</pre></div>
|
|
<a name="The-_002dinterpreter_002dexec-Command"></a>
|
<h4 class="subheading">The <code>-interpreter-exec</code> Command</h4>
|
<a name="index-_002dinterpreter_002dexec"></a>
|
|
<a name="Synopsis-111"></a>
|
<h4 class="subheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-interpreter-exec <var>interpreter</var> <var>command</var>
|
</pre></div>
|
<a name="g_t_002dinterpreter_002dexec"></a>
|
<p>Execute the specified <var>command</var> in the given <var>interpreter</var>.
|
</p>
|
<a name="GDB-Command-91"></a>
|
<h4 class="subheading"><small>GDB</small> Command</h4>
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>interpreter-exec</samp>’.
|
</p>
|
<a name="Example-93"></a>
|
<h4 class="subheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">(gdb)
|
-interpreter-exec console "break main"
|
&"During symbol reading, couldn't parse type; debugger out of date?.\n"
|
&"During symbol reading, bad structure-type format.\n"
|
~"Breakpoint 1 at 0x8074fc6: file ../../src/gdb/main.c, line 743.\n"
|
^done
|
(gdb)
|
</pre></div>
|
|
<a name="The-_002dinferior_002dtty_002dset-Command"></a>
|
<h4 class="subheading">The <code>-inferior-tty-set</code> Command</h4>
|
<a name="index-_002dinferior_002dtty_002dset"></a>
|
|
<a name="Synopsis-112"></a>
|
<h4 class="subheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-inferior-tty-set /dev/pts/1
|
</pre></div>
|
|
<p>Set terminal for future runs of the program being debugged.
|
</p>
|
<a name="GDB-Command-92"></a>
|
<h4 class="subheading"><small>GDB</small> Command</h4>
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>set inferior-tty</samp>’ /dev/pts/1.
|
</p>
|
<a name="Example-94"></a>
|
<h4 class="subheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">(gdb)
|
-inferior-tty-set /dev/pts/1
|
^done
|
(gdb)
|
</pre></div>
|
|
<a name="The-_002dinferior_002dtty_002dshow-Command"></a>
|
<h4 class="subheading">The <code>-inferior-tty-show</code> Command</h4>
|
<a name="index-_002dinferior_002dtty_002dshow"></a>
|
|
<a name="Synopsis-113"></a>
|
<h4 class="subheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-inferior-tty-show
|
</pre></div>
|
|
<p>Show terminal for future runs of program being debugged.
|
</p>
|
<a name="GDB-Command-93"></a>
|
<h4 class="subheading"><small>GDB</small> Command</h4>
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>show inferior-tty</samp>’.
|
</p>
|
<a name="Example-95"></a>
|
<h4 class="subheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">(gdb)
|
-inferior-tty-set /dev/pts/1
|
^done
|
(gdb)
|
-inferior-tty-show
|
^done,inferior_tty_terminal="/dev/pts/1"
|
(gdb)
|
</pre></div>
|
|
<a name="The-_002denable_002dtimings-Command"></a>
|
<h4 class="subheading">The <code>-enable-timings</code> Command</h4>
|
<a name="index-_002denable_002dtimings"></a>
|
|
<a name="Synopsis-114"></a>
|
<h4 class="subheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-enable-timings [yes | no]
|
</pre></div>
|
|
<p>Toggle the printing of the wallclock, user and system times for an MI
|
command as a field in its output. This command is to help frontend
|
developers optimize the performance of their code. No argument is
|
equivalent to ‘<samp>yes</samp>’.
|
</p>
|
<a name="GDB-Command-94"></a>
|
<h4 class="subheading"><small>GDB</small> Command</h4>
|
|
<p>No equivalent.
|
</p>
|
<a name="Example-96"></a>
|
<h4 class="subheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">(gdb)
|
-enable-timings
|
^done
|
(gdb)
|
-break-insert main
|
^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",
|
addr="0x080484ed",func="main",file="myprog.c",
|
fullname="/home/nickrob/myprog.c",line="73",thread-groups=["i1"],
|
times="0"},
|
time={wallclock="0.05185",user="0.00800",system="0.00000"}
|
(gdb)
|
-enable-timings no
|
^done
|
(gdb)
|
-exec-run
|
^running
|
(gdb)
|
*stopped,reason="breakpoint-hit",disp="keep",bkptno="1",thread-id="0",
|
frame={addr="0x080484ed",func="main",args=[{name="argc",value="1"},
|
{name="argv",value="0xbfb60364"}],file="myprog.c",
|
fullname="/home/nickrob/myprog.c",line="73",arch="i386:x86_64"}
|
(gdb)
|
</pre></div>
|
|
<a name="The-_002dcomplete-Command"></a>
|
<h4 class="subheading">The <code>-complete</code> Command</h4>
|
<a name="index-_002dcomplete"></a>
|
|
<a name="Synopsis-115"></a>
|
<h4 class="subheading">Synopsis</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">-complete <var>command</var>
|
</pre></div>
|
|
<p>Show a list of completions for partially typed CLI <var>command</var>.
|
</p>
|
<p>This command is intended for <small>GDB/MI</small> frontends that cannot use two separate
|
CLI and MI channels — for example: because of lack of PTYs like on Windows or
|
because <small>GDB</small> is used remotely via a SSH connection.
|
</p>
|
<a name="Result-9"></a>
|
<h4 class="subheading">Result</h4>
|
|
<p>The result consists of two or three fields:
|
</p>
|
<dl compact="compact">
|
<dt>‘<samp>completion</samp>’</dt>
|
<dd><p>This field contains the completed <var>command</var>. If <var>command</var>
|
has no known completions, this field is omitted.
|
</p>
|
</dd>
|
<dt>‘<samp>matches</samp>’</dt>
|
<dd><p>This field contains a (possibly empty) array of matches. It is always present.
|
</p>
|
</dd>
|
<dt>‘<samp>max_completions_reached</samp>’</dt>
|
<dd><p>This field contains <code>1</code> if number of known completions is above
|
<code>max-completions</code> limit (see <a href="Completion.html#Completion">Completion</a>), otherwise it contains
|
<code>0</code>. It is always present.
|
</p>
|
</dd>
|
</dl>
|
|
<a name="GDB-Command-95"></a>
|
<h4 class="subheading"><small>GDB</small> Command</h4>
|
|
<p>The corresponding <small>GDB</small> command is ‘<samp>complete</samp>’.
|
</p>
|
<a name="Example-97"></a>
|
<h4 class="subheading">Example</h4>
|
|
<div class="smallexample">
|
<pre class="smallexample">(gdb)
|
-complete br
|
^done,completion="break",
|
matches=["break","break-range"],
|
max_completions_reached="0"
|
(gdb)
|
-complete "b ma"
|
^done,completion="b ma",
|
matches=["b madvise","b main"],max_completions_reached="0"
|
(gdb)
|
-complete "b push_b"
|
^done,completion="b push_back(",
|
matches=[
|
"b A::push_back(void*)",
|
"b std::string::push_back(char)",
|
"b std::vector<int, std::allocator<int> >::push_back(int&&)"],
|
max_completions_reached="0"
|
(gdb)
|
-complete "nonexist"
|
^done,matches=[],max_completions_reached="0"
|
(gdb)
|
|
</pre></div>
|
|
<hr>
|
<div class="header">
|
<p>
|
Previous: <a href="GDB_002fMI-Support-Commands.html#GDB_002fMI-Support-Commands" accesskey="p" rel="previous">GDB/MI Support Commands</a>, Up: <a href="GDB_002fMI.html#GDB_002fMI" accesskey="u" rel="up">GDB/MI</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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