149 lines
9.8 KiB
HTML
149 lines
9.8 KiB
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<meta name="DC.Title" content="Debug ILE programs" />
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<meta name="abstract" content="You can debug your ILE programs by using the ILE source debugger." />
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<meta name="description" content="You can debug your ILE programs by using the ILE source debugger." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Debug ILE programs</title>
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</head>
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<body id="dbgile"><a name="dbgile"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Debug ILE programs</h1>
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<div><p>You can debug your ILE programs by using the ILE source debugger. </p>
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<div class="section"> <p>This topic describes how to: </p>
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<ul><li>Prepare your ILE program for debugging</li>
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<li>Start a debug session</li>
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<li>Add and remove programs from a debug session</li>
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<li>View the program source from a debug session</li>
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<li>Set and remove conditional and unconditional breakpoints</li>
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<li>Step through a program</li>
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<li>Display the value of variables</li>
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<li>Change the value of variables</li>
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<li>Display the attributes of variables</li>
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<li>Equate a shorthand name to a variable, expression, or debug command.</li>
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</ul>
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<p>While debugging and testing your programs, ensure that your library
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list is changed to direct the programs to a test library containing test data
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so that any existing real data is not affected.</p>
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<p>You can prevent database
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files in production libraries from being modified unintentionally by using
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one of the following commands: </p>
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<ul><li>Use the <span class="cmdname">Start Debug (STRDBG)</span> command and retain the
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default *NO for the UPDPROD parameter.</li>
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<li>Use the <span class="cmdname">Change Debug (CHGDBG)</span> command.</li>
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</ul>
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<p>The ILE source debugger is used to detect errors in and eliminate
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errors from program objects and service programs. You can use the source debugger
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to: </p>
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<ul><li>Debug any ILE CL or mixed ILE language application</li>
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<li>Monitor the flow of a program by using the debug commands while the program
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is running.</li>
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<li>View the program source</li>
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<li>Set and remove conditional and unconditional breakpoints</li>
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<li>Step through a specified number of statements</li>
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<li>Display or change the value of variables</li>
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<li>Display the attributes of a variable</li>
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</ul>
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<p>When a program stops because of a breakpoint or a step command, the
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applicable module object's view is shown on the display at the point where
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the program stopped. At this point you can enter more debug commands.</p>
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<p>Before
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you can use the source debugger, you must use the debug options parameter
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(DBGVIEW) when you create a module object or program object using <span class="cmdname">Create
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CL Module (CRTCLMOD)</span> or <span class="cmdname">Create Bound CL (CRTBNDCL)</span>.
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After you set the breakpoints or other ILE source debugger options, you can
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call the program.</p>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="dbpgm.htm">Debug commands</a></strong><br />
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Many debug commands are available for use with the ILE source debugger.</li>
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<li class="ulchildlink"><strong><a href="ppgmobj.htm">Prepare a program object for a debug session</a></strong><br />
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Before you can use the ILE source debugger, you must prepare the program object.</li>
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<li class="ulchildlink"><strong><a href="strtiledb.htm">Start the ILE source debugger</a></strong><br />
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After you create the debug view, you can begin debugging your application using the ILE source debugger.</li>
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<li class="ulchildlink"><strong><a href="addpgmdb.htm">Add program objects to a debug session</a></strong><br />
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You can add more program objects to a debug session after starting the session.</li>
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<li class="ulchildlink"><strong><a href="rmpgmdg.htm">Remove program objects from a debug session</a></strong><br />
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You can remove program objects from a debug session after starting the session.</li>
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<li class="ulchildlink"><strong><a href="vwpgmsrc.htm">View the program source</a></strong><br />
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You can view the source of a program object using the Display Module Source display.</li>
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<li class="ulchildlink"><strong><a href="srbp.htm">Set and remove breakpoints</a></strong><br />
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You can use breakpoints to stop a program object at a specific point when it is running.</li>
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<li class="ulchildlink"><strong><a href="cldbinstruction.htm">Use instruction stepping</a></strong><br />
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After a breakpoint is encountered, you can run a specified number of statements of a program object, then stop the program again.</li>
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<li class="ulchildlink"><strong><a href="eval.htm">Display variables</a></strong><br />
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You can display the value of variables using the Display Module Source display or the EVAL debug command.</li>
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<li class="ulchildlink"><strong><a href="chgvarval.htm">Change the value of variables</a></strong><br />
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You can change the value of variables by using the EVAL command with the assignment operator (=).</li>
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<li class="ulchildlink"><strong><a href="attrv.htm">Display variable attributes</a></strong><br />
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You can display the attributes of a variable using the Attribute (ATTR) debug command. The attributes are the size (in bytes) and type of the variable.</li>
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<li class="ulchildlink"><strong><a href="equat.htm">Equate a name with a variable, expression, or command</a></strong><br />
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You can use the EQUATE debug command to equate a name with a variable, expression or debug command for shorthand use.</li>
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<li class="ulchildlink"><strong><a href="dgnlss.htm">Source debug and i5/OS globalization</a></strong><br />
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Be aware of certain conditions regarding i5/OS™ globalization when you are working
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with source debug.</li>
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<li class="ulchildlink"><strong><a href="rmsteps.htm">Operations that temporarily remove steps</a></strong><br />
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Breakpoints or steps may be temporarily removed from a program while debugging when you use certain control language (CL) commands to specify your library or program.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="debugprog.htm" title="Debugging allows you to detect, diagnose, and eliminate errors in a program. This gives how-to information for debugging ILE and OPM programs.">Debug CL programs and procedures</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="stdbg.htm" title="Debug mode is a special environment in which the testing functions can be used in addition to the normal system functions.">Start debug mode</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rbam6probas.htm" title="The operating system includes functions that let a programmer observe operations performed as a program runs.">Parameter values used for testing and debugging</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../cl/chgdbg.htm">Change Debug (CHGDBG) command</a></div>
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<div><a href="../cl/strdbg.htm">Start Debug (STRDBG) command</a></div>
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<div><a href="../clfinder/finder.htm">CL command finder</a></div>
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<div><a href="../books/sc415606.pdf" target="_blank">ILE Concepts PDF</a></div>
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</div>
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</div>
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</body>
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</html>
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