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| Next: <a href="GDB_002fMI-Ada-Tasking-Commands.html#GDB_002fMI-Ada-Tasking-Commands" accesskey="n" rel="next">GDB/MI Ada Tasking Commands</a>, Previous: <a href="GDB_002fMI-Program-Context.html#GDB_002fMI-Program-Context" accesskey="p" rel="prev">GDB/MI Program Context</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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| <hr> |
| <a name="GDB_002fMI-Thread-Commands-1"></a> |
| <h3 class="section">27.11 <small>GDB/MI</small> Thread Commands</h3> |
| |
| |
| <a name="The-_002dthread_002dinfo-Command"></a> |
| <h4 class="subheading">The <code>-thread-info</code> Command</h4> |
| <a name="index-_002dthread_002dinfo"></a> |
| |
| <a name="Synopsis-22"></a> |
| <h4 class="subsubheading">Synopsis</h4> |
| |
| <div class="smallexample"> |
| <pre class="smallexample"> -thread-info [ <var>thread-id</var> ] |
| </pre></div> |
| |
| <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. |
| </p> |
| <a name="GDB-Command-21"></a> |
| <h4 class="subsubheading"><small>GDB</small> Command</h4> |
| |
| <p>The ‘<samp>info thread</samp>’ command prints the same information |
| about all threads. |
| </p> |
| <a name="Result-3"></a> |
| <h4 class="subsubheading">Result</h4> |
| |
| <p>The result is a list of threads. The following attributes are |
| defined for a given thread: |
| </p> |
| <dl compact="compact"> |
| <dt>‘<samp>current</samp>’</dt> |
| <dd><p>This field exists only for the current thread. It has the value ‘<samp>*</samp>’. |
| </p> |
| </dd> |
| <dt>‘<samp>id</samp>’</dt> |
| <dd><p>The identifier that <small>GDB</small> uses to refer to the thread. |
| </p> |
| </dd> |
| <dt>‘<samp>target-id</samp>’</dt> |
| <dd><p>The identifier that the target uses to refer to the thread. |
| </p> |
| </dd> |
| <dt>‘<samp>details</samp>’</dt> |
| <dd><p>Extra information about the thread, in a target-specific format. This |
| field is optional. |
| </p> |
| </dd> |
| <dt>‘<samp>name</samp>’</dt> |
| <dd><p>The name of the thread. If the user specified a name using the |
| <code>thread name</code> command, then this name is given. Otherwise, if |
| <small>GDB</small> can extract the thread name from the target, then that |
| name is given. If <small>GDB</small> cannot find the thread name, then this |
| field is omitted. |
| </p> |
| </dd> |
| <dt>‘<samp>frame</samp>’</dt> |
| <dd><p>The stack frame currently executing in the thread. |
| </p> |
| </dd> |
| <dt>‘<samp>state</samp>’</dt> |
| <dd><p>The thread’s state. The ‘<samp>state</samp>’ field may have the following |
| values: |
| </p> |
| <dl compact="compact"> |
| <dt><code>stopped</code></dt> |
| <dd><p>The thread is stopped. Frame information is available for stopped |
| threads. |
| </p> |
| </dd> |
| <dt><code>running</code></dt> |
| <dd><p>The thread is running. There’s no frame information for running |
| threads. |
| </p> |
| </dd> |
| </dl> |
| |
| </dd> |
| <dt>‘<samp>core</samp>’</dt> |
| <dd><p>If <small>GDB</small> can find the CPU core on which this thread is running, |
| then this field is the core identifier. This field is optional. |
| </p> |
| </dd> |
| </dl> |
| |
| <a name="Example-21"></a> |
| <h4 class="subsubheading">Example</h4> |
| |
| <div class="smallexample"> |
| <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></div> |
| |
| <a name="The-_002dthread_002dlist_002dids-Command"></a> |
| <h4 class="subheading">The <code>-thread-list-ids</code> Command</h4> |
| <a name="index-_002dthread_002dlist_002dids"></a> |
| |
| <a name="Synopsis-23"></a> |
| <h4 class="subsubheading">Synopsis</h4> |
| |
| <div class="smallexample"> |
| <pre class="smallexample"> -thread-list-ids |
| </pre></div> |
| |
| <p>Produces a list of the currently known <small>GDB</small> thread ids. At the |
| end of the list it also prints the total number of such threads. |
| </p> |
| <p>This command is retained for historical reasons, the |
| <code>-thread-info</code> command should be used instead. |
| </p> |
| <a name="GDB-Command-22"></a> |
| <h4 class="subsubheading"><small>GDB</small> Command</h4> |
| |
| <p>Part of ‘<samp>info threads</samp>’ supplies the same information. |
| </p> |
| <a name="Example-22"></a> |
| <h4 class="subsubheading">Example</h4> |
| |
| <div class="smallexample"> |
| <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></div> |
| |
| |
| <a name="The-_002dthread_002dselect-Command"></a> |
| <h4 class="subheading">The <code>-thread-select</code> Command</h4> |
| <a name="index-_002dthread_002dselect"></a> |
| |
| <a name="Synopsis-24"></a> |
| <h4 class="subsubheading">Synopsis</h4> |
| |
| <div class="smallexample"> |
| <pre class="smallexample"> -thread-select <var>threadnum</var> |
| </pre></div> |
| |
| <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> |
| <p>This command is deprecated in favor of explicitly using the |
| ‘<samp>--thread</samp>’ option to each command. |
| </p> |
| <a name="GDB-Command-23"></a> |
| <h4 class="subsubheading"><small>GDB</small> Command</h4> |
| |
| <p>The corresponding <small>GDB</small> command is ‘<samp>thread</samp>’. |
| </p> |
| <a name="Example-23"></a> |
| <h4 class="subsubheading">Example</h4> |
| |
| <div class="smallexample"> |
| <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></div> |
| |
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| Next: <a href="GDB_002fMI-Ada-Tasking-Commands.html#GDB_002fMI-Ada-Tasking-Commands" accesskey="n" rel="next">GDB/MI Ada Tasking Commands</a>, Previous: <a href="GDB_002fMI-Program-Context.html#GDB_002fMI-Program-Context" accesskey="p" rel="prev">GDB/MI Program Context</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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