| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html> |
| <!-- Copyright (C) 1988-2015 Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being "Free Software" and "Free Software Needs |
| Free Documentation", with the Front-Cover Texts being "A GNU Manual," |
| and with the Back-Cover Texts as in (a) below. |
| |
| (a) The FSF's Back-Cover Text is: "You are free to copy and modify |
| this GNU Manual. Buying copies from GNU Press supports the FSF in |
| developing GNU and promoting software freedom." --> |
| <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ --> |
| <head> |
| <title>Debugging with GDB: Method Names in Commands</title> |
| |
| <meta name="description" content="Debugging with GDB: Method Names in Commands"> |
| <meta name="keywords" content="Debugging with GDB: Method Names in Commands"> |
| <meta name="resource-type" content="document"> |
| <meta name="distribution" content="global"> |
| <meta name="Generator" content="makeinfo"> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
| <link href="index.html#Top" rel="start" title="Top"> |
| <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> |
| <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> |
| <link href="Objective_002dC.html#Objective_002dC" rel="up" title="Objective-C"> |
| <link href="The-Print-Command-with-Objective_002dC.html#The-Print-Command-with-Objective_002dC" rel="next" title="The Print Command with Objective-C"> |
| <link href="Objective_002dC.html#Objective_002dC" rel="prev" title="Objective-C"> |
| <style type="text/css"> |
| <!-- |
| a.summary-letter {text-decoration: none} |
| blockquote.smallquotation {font-size: smaller} |
| div.display {margin-left: 3.2em} |
| div.example {margin-left: 3.2em} |
| div.indentedblock {margin-left: 3.2em} |
| div.lisp {margin-left: 3.2em} |
| div.smalldisplay {margin-left: 3.2em} |
| div.smallexample {margin-left: 3.2em} |
| div.smallindentedblock {margin-left: 3.2em; font-size: smaller} |
| div.smalllisp {margin-left: 3.2em} |
| kbd {font-style:oblique} |
| pre.display {font-family: inherit} |
| pre.format {font-family: inherit} |
| pre.menu-comment {font-family: serif} |
| pre.menu-preformatted {font-family: serif} |
| pre.smalldisplay {font-family: inherit; font-size: smaller} |
| pre.smallexample {font-size: smaller} |
| pre.smallformat {font-family: inherit; font-size: smaller} |
| pre.smalllisp {font-size: smaller} |
| span.nocodebreak {white-space:nowrap} |
| span.nolinebreak {white-space:nowrap} |
| span.roman {font-family:serif; font-weight:normal} |
| span.sansserif {font-family:sans-serif; font-weight:normal} |
| ul.no-bullet {list-style: none} |
| --> |
| </style> |
| |
| |
| </head> |
| |
| <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> |
| <a name="Method-Names-in-Commands"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="The-Print-Command-with-Objective_002dC.html#The-Print-Command-with-Objective_002dC" accesskey="n" rel="next">The Print Command with Objective-C</a>, Up: <a href="Objective_002dC.html#Objective_002dC" accesskey="u" rel="up">Objective-C</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> |
| </div> |
| <hr> |
| <a name="Method-Names-in-Commands-1"></a> |
| <h4 class="subsubsection">15.4.4.1 Method Names in Commands</h4> |
| |
| <p>The following commands have been extended to accept Objective-C method |
| names as line specifications: |
| </p> |
| <a name="index-clear_002c-and-Objective_002dC"></a> |
| <a name="index-break_002c-and-Objective_002dC"></a> |
| <a name="index-info-line_002c-and-Objective_002dC"></a> |
| <a name="index-jump_002c-and-Objective_002dC"></a> |
| <a name="index-list_002c-and-Objective_002dC"></a> |
| <ul> |
| <li> <code>clear</code> |
| </li><li> <code>break</code> |
| </li><li> <code>info line</code> |
| </li><li> <code>jump</code> |
| </li><li> <code>list</code> |
| </li></ul> |
| |
| <p>A fully qualified Objective-C method name is specified as |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">-[<var>Class</var> <var>methodName</var>] |
| </pre></div> |
| |
| <p>where the minus sign is used to indicate an instance method and a |
| plus sign (not shown) is used to indicate a class method. The class |
| name <var>Class</var> and method name <var>methodName</var> are enclosed in |
| brackets, similar to the way messages are specified in Objective-C |
| source code. For example, to set a breakpoint at the <code>create</code> |
| instance method of class <code>Fruit</code> in the program currently being |
| debugged, enter: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">break -[Fruit create] |
| </pre></div> |
| |
| <p>To list ten program lines around the <code>initialize</code> class method, |
| enter: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">list +[NSText initialize] |
| </pre></div> |
| |
| <p>In the current version of <small>GDB</small>, the plus or minus sign is |
| required. In future versions of <small>GDB</small>, the plus or minus |
| sign will be optional, but you can use it to narrow the search. It |
| is also possible to specify just a method name: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">break create |
| </pre></div> |
| |
| <p>You must specify the complete method name, including any colons. If |
| your program’s source files contain more than one <code>create</code> method, |
| you’ll be presented with a numbered list of classes that implement that |
| method. Indicate your choice by number, or type ‘<samp>0</samp>’ to exit if |
| none apply. |
| </p> |
| <p>As another example, to clear a breakpoint established at the |
| <code>makeKeyAndOrderFront:</code> method of the <code>NSWindow</code> class, enter: |
| </p> |
| <div class="smallexample"> |
| <pre class="smallexample">clear -[NSWindow makeKeyAndOrderFront:] |
| </pre></div> |
| |
| <hr> |
| <div class="header"> |
| <p> |
| Next: <a href="The-Print-Command-with-Objective_002dC.html#The-Print-Command-with-Objective_002dC" accesskey="n" rel="next">The Print Command with Objective-C</a>, Up: <a href="Objective_002dC.html#Objective_002dC" accesskey="u" rel="up">Objective-C</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> |
| </div> |
| |
| |
| |
| </body> |
| </html> |
