Mercurial Mercurial > oss > FCL > sftools > dev > ide > carbidecpp / annotate
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
core/com.nokia.carbide.cpp.doc.user/html/concepts/breakpoints.htm
author fturovic <frank.turovich@nokia.com>
Wed, 17 Jun 2009 12:03:14 -0500
changeset 259 53dc199caef8
parent 0 fb279309251b
child 1225 a546534a48de
child 1248 d4fee22b8cbb
permissions -rw-r--r--
updated release notes and bug fixes for 2.1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     1
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     2
 
<html>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     3
 
<head>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     4
 
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     5
 
<meta http-equiv="Content-Style-Type" content="text/css" />
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     6
 
<meta name="LASTUPDATED" content="06/17/05 11:09:43" />
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     7
 
<title>Breakpoints</title>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     8
 
<link rel="StyleSheet" href="../../book.css" type="text/css"/>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
     9
 
</head>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    10
 
<body bgcolor="#FFFFFF">
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    11
 
<h2>Breakpoints </h2>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    12
 
<p>  A <b>breakpoint</b> is a marker set on a specific line of source code and is designed to halt program execution when encountered by the debugger. After you set a breakpoint at a key point in the program, you can halt its execution, examine its current state, and check register and variable values. You can also change values and alter the flow of normal program execution. Setting breakpoints helps you debug your program and verify its efficiency.</p>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    13
 
<p>A project can have multiple breakpoints set in the source code files. All breakpoints  in a project are shown in the <a href="../reference/view_breakpoints.htm">Breakpoints</a> view. Breakpoints are enabled or disabled on the currently selected line within  a source code editor by selecting the <b>Run &gt; Toggle Breakpoint</b> menu option, right-clicking the marker bar in the editor and selecting <b>Toggle Breakpoint</b>, or by pressing <span class="code">CTRL-SHIFT-B</span>.</p>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    14
 
<p>You can set a breakpoint on any executable line of code that the debugger can resolve. Lines containing comments and other non executable code cannot be assigned a breakpoint as they are normally stripped from the  compiled   binary. The debugger must load  the symbols for a module before it can attempt to resolve  breakpoints within the module. This is most easily done using the <a href="../reference/view_executables.htm">Executables</a> view to import a binary file, especially if the binary is not in the workspace. </p>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    15
 
<p>When the debugger attempts to resolve a breakpoint it will result in:</p>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    16
 
<ul>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    17
 
  <li><b>resolved</b> &#8212; the symbols for the module  are loaded  and the breakpoint  located in the executable that&#8217;s currently being debugged, circle icon changes to flagged icon </li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    18
 
  <li><b>resolved and moved</b> &#8212;the breakpoint is not found in the executable at the specified point. Debugger moves breakpoint forward in the current function until a line is found that can be resolved. Breakpoint icon moved to source line matching new breakpoint location and changed to flagged icon.</li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    19
 
  <li><b>unresolved</b>  &#8212;  if the symbols for the module  are not loaded or the breakpoint was not able to be set within the current function. This may indicate no executable code in the source line or a deadstripped function  not present in the executable. Breakpoint icon remains in unflagged state indicating unresolved status.</li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    20
 
</ul>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    21
 
<p>Breakpoints have enabled and disabled types as well as resolved and unresolved states. Table 1 explains the different breakpoint types and states.</p>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    22
 
<h5>Table 1 Breakpoint&mdash;type and states </h5>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    23
 
<table width="90%"  border="0" cellpadding="2" cellspacing="0">
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    24
 
  <tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    25
 
    <th width="15%" scope="col">Type</th>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    26
 
    <th width="14%" scope="col">State</th>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    27
 
    <th width="14%" scope="col">Icon</th>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    28
 
    <th width="71%" scope="col">Explanation</th>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    29
 
  </tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    30
 
  <tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    31
 
    <td>Enabled</td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    32
 
    <td><div align="center">Unresolved</div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    33
 
    <td><div align="center"><img src="../tasks/breakpoints/images/breakpoints_enabled_icon.png" width="9" height="10" /></div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    34
 
    <td>Indicates that the breakpoint is currently enabled but not located in the executable during a debug session. Debugger cannot halt program execution.</td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    35
 
  </tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    36
 
  <tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    37
 
    <td>Enabled</td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    38
 
    <td><div align="center">Resolved</div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    39
 
    <td><div align="center"> <img src="../images/icons/breakpoints_enabled_icon.png" width="15" height="12" /></div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    40
 
    <td>Indicates that the breakpoint is currently enabled and resolved for the source line. The debugger halts program execution at an enabled breakpoint. </td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    41
 
  </tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    42
 
  <tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    43
 
    <td>Disabled</td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    44
 
    <td><div align="center">Unresolved</div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    45
 
    <td><div align="center"><img src="../tasks/breakpoints/images/breakpoints_disabled_icon.png" width="12" height="11" /></div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    46
 
    <td>Indicates that the breakpoint is currently disabled but not located in the executable during a debug session. The debugger does not halt program execution at a disabled breakpoint.</td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    47
 
  </tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    48
 
  <tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    49
 
    <td>Disabled</td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    50
 
    <td><div align="center">Resolved</div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    51
 
    <td><div align="center"><img src="../images/icons/breakpoints_disabled_icon.png" width="15" height="12" /></div></td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    52
 
    <td>Indicates that the breakpoint is currently disabled and resolved for the source line. The debugger does not halt program execution at a disabled breakpoint.</td>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    53
 
  </tr>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    54
 
</table>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    55
 
<p>Other references </p>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    56
 
<ul>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    57
 
  <li><a href="../reference/view_executables.htm">Executables view</a></li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    58
 
  <li><a href="../tasks/breakpoints/pgm_bp_setting.htm">Setting Breakpoints</a></li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    59
 
  <li><a href="../tasks/breakpoints/pgm_bp_enable.htm">Enabling Breakpoints</a></li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    60
 
  <li><a href="../tasks/breakpoints/pgm_bp_disable.htm">Disabling Breakpoints</a></li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    61
 
  <li><a href="../tasks/breakpoints/pgm_bp_clearing.htm">Clearing Breakpoints</a></li>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    62
 
</ul>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    63
 
<div id="footer">Copyright &copy; 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div>
fb279309251b DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff changeset 
    64
 












fb279309251b
DP tools release version Revision: 200912



Deepak Modgil <Deepak.Modgil@Nokia.com>


parents: 

diff
changeset




    65


</body>













fb279309251b
DP tools release version Revision: 200912



Deepak Modgil <Deepak.Modgil@Nokia.com>


parents: 

diff
changeset




    66


</html>















FCL/sftools/dev/ide/carbidecpp