93 lines
5.8 KiB
HTML
93 lines
5.8 KiB
HTML
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<title>Parameter values used for testing and debugging</title>
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<body id="rbam6probas"><a name="rbam6probas"><!-- --></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">Parameter values used for testing and debugging</h1>
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<div><p>The operating system includes functions that let a programmer observe
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operations performed as a program runs. </p>
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<div class="section"><p>Testing functions can be used to locate operations that are not
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performing as intended. These functions can be used in either batch or interactive
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jobs from a workstation. In either case, the program being observed must
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be in the testing environment, called <em>debug mode</em>.</p>
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<p>The testing
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functions narrow the search for errors that are difficult to find in the procedure's
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source statements. Often, an error is apparent only because the output produced
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is not what is expected. To find those errors, you need to be able to stop
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the program at a given point (called a <em>breakpoint</em>) and examine variable
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information in the program to see if it is correct. You might want to make
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changes to those variables before letting the program continue running.</p>
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<p>You
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do not need to know machine language instructions, nor is there a need to
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include special instructions in the program to use the testing functions.
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The i5/OS™ testing
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functions let you: </p>
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<ul><li>Stop a running program at any named point in the program's source statements.</li>
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<li>Display information about procedure variables at any point where the program
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can be stopped. You can also change the variable information before continuing
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procedure processing.</li>
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</ul>
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<p>This section contains expanded descriptions of the program variable,
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basing pointer, subscript, and qualified-name parameter values. These values
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can be specified on the <span class="cmdname">Add Breakpoint (ADDBKP)</span>, <span class="cmdname">Add
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Trace (ADDTRC)</span>, <span class="cmdname">Change High-Level Language Pointer (CHGHLLPTR)</span>, <span class="cmdname">Change
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Program Variable (CHGPGMVAR)</span>, and <span class="cmdname">Display Program Variable
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(DSPPGMVAR)</span> commands.</p>
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<p>See the appropriate ILE guide for debugging
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information with other ILE languages.</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="rbam6progvardes.htm">Program-variable description</a></strong><br />
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The topic describes the program-variable description.</li>
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<li class="ulchildlink"><strong><a href="rbam6basingpointerdes.htm">Basing-pointer description</a></strong><br />
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The topic describes the basing-pointer description.</li>
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<li class="ulchildlink"><strong><a href="rbam6subscriptdes.htm">Subscript description</a></strong><br />
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The topic describes the subscript description.</li>
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<li class="ulchildlink"><strong><a href="rbam6qualnamedes.htm">Qualified-name description</a></strong><br />
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The topic describes the qualified-name description.</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="parameters.htm" title="A parameter is a value that is passed to a command or program to provide user input or control the actions of the command or program.">Parameters</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="dbgile.htm" title="You can debug your ILE programs by using the ILE source debugger.">Debug ILE programs</a></div>
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<div><a href="opm.htm" title="You can debug your OPM programs by using testing functions.">Debug OPM programs</a></div>
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</div>
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</div>
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</body>
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</html> |