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| <title>Debugging with GDB: Stopping</title> |
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| <a name="Stopping"></a> |
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| Next: <a href="Reverse-Execution.html#Reverse-Execution" accesskey="n" rel="next">Reverse Execution</a>, Previous: <a href="Running.html#Running" accesskey="p" rel="prev">Running</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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| <a name="Stopping-and-Continuing"></a> |
| <h2 class="chapter">5 Stopping and Continuing</h2> |
| |
| <p>The principal purposes of using a debugger are so that you can stop your |
| program before it terminates; or so that, if your program runs into |
| trouble, you can investigate and find out why. |
| </p> |
| <p>Inside <small>GDB</small>, your program may stop for any of several reasons, |
| such as a signal, a breakpoint, or reaching a new line after a |
| <small>GDB</small> command such as <code>step</code>. You may then examine and |
| change variables, set new breakpoints or remove old ones, and then |
| continue execution. Usually, the messages shown by <small>GDB</small> provide |
| ample explanation of the status of your program—but you can also |
| explicitly request this information at any time. |
| </p> |
| <dl compact="compact"> |
| <dd><a name="index-info-program"></a> |
| </dd> |
| <dt><code>info program</code></dt> |
| <dd><p>Display information about the status of your program: whether it is |
| running or not, what process it is, and why it stopped. |
| </p></dd> |
| </dl> |
| |
| <table class="menu" border="0" cellspacing="0"> |
| <tr><td align="left" valign="top">• <a href="Breakpoints.html#Breakpoints" accesskey="1">Breakpoints</a>:</td><td> </td><td align="left" valign="top">Breakpoints, watchpoints, and catchpoints |
| </td></tr> |
| <tr><td align="left" valign="top">• <a href="Continuing-and-Stepping.html#Continuing-and-Stepping" accesskey="2">Continuing and Stepping</a>:</td><td> </td><td align="left" valign="top">Resuming execution |
| </td></tr> |
| <tr><td align="left" valign="top">• <a href="Skipping-Over-Functions-and-Files.html#Skipping-Over-Functions-and-Files" accesskey="3">Skipping Over Functions and Files</a>:</td><td> </td><td align="left" valign="top"> |
| Skipping over functions and files |
| </td></tr> |
| <tr><td align="left" valign="top">• <a href="Signals.html#Signals" accesskey="4">Signals</a>:</td><td> </td><td align="left" valign="top">Signals |
| </td></tr> |
| <tr><td align="left" valign="top">• <a href="Thread-Stops.html#Thread-Stops" accesskey="5">Thread Stops</a>:</td><td> </td><td align="left" valign="top">Stopping and starting multi-thread programs |
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