<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <html lang="en"> <head> <meta http-equiv="Content-Language" content="en-us"> <meta name="GENERATOR" content="Microsoft FrontPage 5.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Debug information</title> <link rel="stylesheet" type="text/css" href="../help.css"> </head> <body> <h1>Debug information</h1> <p>The <b>Debug</b> perspective lets you manage the debugging or running of a program in the Workbench. You can control the execution of your program by setting breakpoints, suspending launched programs, stepping through your code, and examining the contents of variables.</p> <p> The <b>Debug</b> perspective displays the following information:</p> <ul> <li>The stack frame for the suspended threads for each target that you are debugging</li> <li>Each thread in your program represented as a node in the tree</li> <li>The process for each program that you are running</li> </ul> <p>The <b>Debug</b> perspective also drives the <b>C/C++ Editor</b>. As you step through your program, the <b>C/C++ Editor</b> highlights the location of the execution pointer. </p> <h2>Variables</h2> <p>You can view information about the variables in a selected stack frame in the Variables view. When execution stops, the changed values are by default highlighted in red. Like the other debug-related views, the Variables view does not refresh as you run your executable. A refresh occurs when execution stops.</p> <h2>Expressions</h2> <p>An expression is a snippet of code that can be evaluated to produce a result. The context for an expression depends on the particular debug model. Some expressions may need to be evaluated at a specific location in the program so that the variables can be referenced. You can view information about expressions in the Expressions view.</p> <h2>Registers</h2> <p>You can view information about the registers in a selected stack frame. Values that have changed are highlighted in the Registers view when your program stops.</p> <h2>Memory</h2> <p>You can inspect and change your process memory.</p> <h2>Shared libraries</h2> <p>You can view information about the shared libraries loaded in the current debug session.</p> <h2>Signals</h2> <p>You can view the signals defined on the selected debug target and how the debugger handles each one.</p> <p><img border="0" src="../images/ngconcepts.gif" ALT="Related concepts" width="143" height="21"> <br> <a href="cdt_c_over_cdt.htm">Overview of the CDT</a><br> <a href="cdt_c_over_dbg.htm">Debug overview</a></p> <p><img border="0" src="../images/ngtasks.gif" ALT="Related tasks" width="143" height="21"> <br> <a href="../tasks/cdt_o_debug.htm">Debugging</a><br> </p> <p><img border="0" src="../images/ngref.gif" ALT="Related reference" width="143" height="21"> <br> <a href="../reference/cdt_o_run_dbg_pages.htm">Run and Debug dialog box</a><br> <a href="../reference/cdt_o_dbg_view.htm">Debug views</a></p><p> <img src="../images/ng00_04a.gif" ALT="IBM Copyright Statement" > </p> </body> </html>