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| Next: <a href="Trace-File-Format.html#Trace-File-Format" accesskey="n" rel="next">Trace File Format</a>, Previous: <a href="Target-Descriptions.html#Target-Descriptions" accesskey="p" rel="prev">Target Descriptions</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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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| <h2 class="appendix">Appendix H Operating System Information</h2> |
| <a name="index-operating-system-information"></a> |
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| <tr><td align="left" valign="top">• <a href="Process-list.html#Process-list" accesskey="1">Process list</a>:</td><td> </td><td align="left" valign="top"> |
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| <p>Users of <small>GDB</small> often wish to obtain information about the state of |
| the operating system running on the target—for example the list of |
| processes, or the list of open files. This section describes the |
| mechanism that makes it possible. This mechanism is similar to the |
| target features mechanism (see <a href="Target-Descriptions.html#Target-Descriptions">Target Descriptions</a>), but focuses |
| on a different aspect of target. |
| </p> |
| <p>Operating system information is retrived from the target via the |
| remote protocol, using ‘<samp>qXfer</samp>’ requests (see <a href="General-Query-Packets.html#qXfer-osdata-read">qXfer osdata read</a>). The object name in the request should be ‘<samp>osdata</samp>’, and |
| the <var>annex</var> identifies the data to be fetched. |
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