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| <h4 class="subsection">27.5.2 <span class="sc">gdb/mi</span> Stream Records</h4> |
| |
| <p><a name="index-g_t_0040sc_007bgdb_002fmi_007d_002c-stream-records-2025"></a><a name="index-stream-records-in-_0040sc_007bgdb_002fmi_007d-2026"></a><span class="sc">gdb</span> internally maintains a number of output streams: the console, the |
| target, and the log. The output intended for each of these streams is |
| funneled through the <span class="sc">gdb/mi</span> interface using <dfn>stream records</dfn>. |
| |
| <p>Each stream record begins with a unique <dfn>prefix character</dfn> which |
| identifies its stream (see <a href="GDB_002fMI-Output-Syntax.html#GDB_002fMI-Output-Syntax"><span class="sc">gdb/mi</span> Output Syntax</a>). In addition to the prefix, each stream record contains a |
| <var>string-output</var>. This is either raw text (with an implicit new |
| line) or a quoted C string (which does not contain an implicit newline). |
| |
| <dl> |
| <dt><code>"~" </code><var>string-output</var><dd>The console output stream contains text that should be displayed in the |
| CLI console window. It contains the textual responses to CLI commands. |
| |
| <br><dt><code>"@" </code><var>string-output</var><dd>The target output stream contains any textual output from the running |
| target. This is only present when GDB's event loop is truly |
| asynchronous, which is currently only the case for remote targets. |
| |
| <br><dt><code>"&" </code><var>string-output</var><dd>The log stream contains debugging messages being produced by <span class="sc">gdb</span>'s |
| internals. |
| </dl> |
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