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| <a name="GDB_002fMI-Stream-Records-1"></a> |
| <h4 class="subsection">27.5.2 <small>GDB/MI</small> Stream Records</h4> |
| |
| <a name="index-GDB_002fMI_002c-stream-records"></a> |
| <a name="index-stream-records-in-GDB_002fMI"></a> |
| <p><small>GDB</small> 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 <small>GDB/MI</small> interface using <em>stream records</em>. |
| </p> |
| <p>Each stream record begins with a unique <em>prefix character</em> which |
| identifies its stream (see <a href="GDB_002fMI-Output-Syntax.html#GDB_002fMI-Output-Syntax"><small>GDB/MI</small> Output |
| Syntax</a>). In addition to the prefix, each stream record contains a |
| <code><var>string-output</var></code>. This is either raw text (with an implicit new |
| line) or a quoted C string (which does not contain an implicit newline). |
| </p> |
| <dl compact="compact"> |
| <dt><code>"~" <var>string-output</var></code></dt> |
| <dd><p>The console output stream contains text that should be displayed in the |
| CLI console window. It contains the textual responses to CLI commands. |
| </p> |
| </dd> |
| <dt><code>"@" <var>string-output</var></code></dt> |
| <dd><p>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. |
| </p> |
| </dd> |
| <dt><code>"&" <var>string-output</var></code></dt> |
| <dd><p>The log stream contains debugging messages being produced by <small>GDB</small>’s |
| internals. |
| </p></dd> |
| </dl> |
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