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| <h3 class="section">27.11 <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-3004"></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. |
| <var>thread-id</var> is the thread's global thread ID. When printing |
| information about all threads, also reports the global ID of 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">Result</h5> |
| |
| <p>The result contains the following attributes: |
| |
| <dl> |
| <dt>‘<samp><span class="samp">threads</span></samp>’<dd>A list of threads. The format of the elements of the list is described in |
| <a href="GDB_002fMI-Thread-Information.html#GDB_002fMI-Thread-Information">GDB/MI Thread Information</a>. |
| |
| <br><dt>‘<samp><span class="samp">current-thread-id</span></samp>’<dd>The global id of the currently selected thread. This field is omitted if there |
| is no selected thread (for example, when the selected inferior is not running, |
| and therefore has no threads) or if a <var>thread-id</var> argument was passed to |
| the command. |
| |
| </dl> |
| |
| <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",arch="i386:x86_64"}, |
| state="running"}], |
| current-thread-id="1" |
| (gdb) |
| </pre> |
| <h4 class="subheading">The <code>-thread-list-ids</code> Command</h4> |
| |
| <p><a name="index-g_t_002dthread_002dlist_002dids-3005"></a> |
| |
| <h5 class="subsubheading">Synopsis</h5> |
| |
| <pre class="smallexample"> -thread-list-ids |
| </pre> |
| <p>Produces a list of the currently known global <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-3006"></a> |
| |
| <h5 class="subsubheading">Synopsis</h5> |
| |
| <pre class="smallexample"> -thread-select <var>thread-id</var> |
| </pre> |
| <p>Make thread with global thread number <var>thread-id</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",arch="i386:x86_64"} |
| (gdb) |
| </pre> |
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