91 lines
5.2 KiB
HTML
91 lines
5.2 KiB
HTML
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<meta name="DC.Title" content="Use the Work with Breakpoints display" />
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<meta name="abstract" content="You can use the Work with Breakpoints display to set or remove breakpoints." />
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<title>Use the Work with Breakpoints display</title>
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</head>
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<body id="wrkbreak"><a name="wrkbreak"><!-- --></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">Use the Work with Breakpoints display</h1>
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<div><p>You can use the Work with Breakpoints display to set or remove
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breakpoints.</p>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> The relational operators supported for conditional breakpoints
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are <, >, =, <=, >=, and <> (not equal).</div>
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<p>The Work
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with Module Breakpoints display can be accessed from the Display Module Source
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display by pressing F13 (Work with Module Breakpoints). The Work with Module
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Breakpoints display is shown in the figure below. To set a conditional breakpoint,
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type the following and press <span class="uicontrol">Enter</span>:</p>
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<ul><li>1 (Add) in the <em>Opt</em> field,</li>
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<li>the debugger line number where you want to set the breakpoint in the <em>Line</em> field,</li>
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<li>a conditional expression in the <em>Condition</em> field,</li>
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</ul>
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<p>For example, to set a conditional breakpoint at debugger line 35,
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as shown in the figure below, type the following and press <span class="uicontrol">Enter</span>:</p>
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<ul><li>1 (Add) in the <em>Opt</em> field,</li>
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<li>35 in the <em>Line</em> field,</li>
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<li>type &I=21 in the <em>Condition</em> field,</li>
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</ul>
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<p>To remove a conditional breakpoint, type 4 (Clear) in the <em>Opt</em> field
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next to the breakpoint you want to remove, and press <span class="uicontrol">Enter</span>.
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You can also remove unconditional breakpoints in this manner.</p>
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<div class="fignone" id="wrkbreak__wrkbkpt"><a name="wrkbreak__wrkbkpt"><!-- --></a><span class="figcap">Figure 1. Set a Conditional Breakpoint</span><pre class="screen"> <strong>Work with Module Breakpoints</strong>
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System: SYSTEM01
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Program . . . : MYPGM Library . . . : MYLIB
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Module . . . : MYMOD Type . . . . . : *PGM
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Type options, press Enter.
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1=Add 4=Clear
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Opt Line Condition
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1 35____ &I=21______________________
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_ ______ ____________________________</pre>
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</div>
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</div>
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<div class="section"><p>Repeat the previous steps for each conditional breakpoint you
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want to set or remove. </p>
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<div class="note"><span class="notetitle">Note:</span> If the line on which you want to set a breakpoint
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is not a runnable statement, the breakpoint is set at the next runnable statement.</div>
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<p>After
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you specify all breakpoints that you want to set or remove, press F3 (Exit)
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to return to the Display Module Source display.</p>
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<p>Then press F3 (Exit)
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to leave the Display Module Source display. You can also use F21 (Command
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Line) from the Display Module Source display to call the program object from
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a command line.</p>
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<p>Call the program object. When a statement with a conditional
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breakpoint is reached, the conditional expression associated with the breakpoint
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is evaluated before the statement is run. If the result is false, the program
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object continues to run. If the result is true, the program object stops,
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and the Display Module Source display is shown. At this point, you can evaluate
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variables, set more breakpoints, and run any of the debug commands.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="srbp.htm" title="You can use breakpoints to stop a program object at a specific point when it is running.">Set and remove breakpoints</a></div>
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</div>
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</div>
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</body>
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