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<div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="Runtime"></a>Runtime</h1><div class=CBody><p>Runtime keeps track of time to control how long a tool’s main loop runs. This package was created to handle mk-query-digest --run-time-mode event. In essence, we abstract time so that the tool doesn’t know/care whether now() comes from a clock, a log timestamp, or wherever. The creator of Runtime object determines how, or from where, time is gotten so that the caller of the object can simply ask, “What time is it?”.</p><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#Runtime" >Runtime</a></td><td class=SDescription>Runtime keeps track of time to control how long a tool’s main loop runs. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#Runtime.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Runtime.new" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">new</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Runtime.time_left" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">time_left</a></td><td class=SDescription>Return the number of runtime seconds left or undef for forever. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Runtime.have_time" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">have_time</a></td><td class=SDescription>Return true or false if there’s runtime left. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Runtime.time_elapsed" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">time_elapsed</a></td><td class=SDescription>How much time has elapsed since <a href="#Runtime.time_left" class=LFunction id=link5 onMouseOver="ShowTip(event, 'tt2', 'link5')" onMouseOut="HideTip('tt2')">time_left()</a> was first called.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Runtime.reset" id=link6 onMouseOver="ShowTip(event, 'tt5', 'link6')" onMouseOut="HideTip('tt5')">reset</a></td><td class=SDescription>Reset this Runtime object for another run. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Runtime.stop" id=link7 onMouseOver="ShowTip(event, 'tt6', 'link7')" onMouseOut="HideTip('tt6')">stop</a></td><td class=SDescription>Stop the coutdown, make <a href="#Runtime.time_left" class=LFunction id=link8 onMouseOver="ShowTip(event, 'tt2', 'link8')" onMouseOut="HideTip('tt2')">time_left()</a> return 0 and <a href="#Runtime.have_time" class=LFunction id=link9 onMouseOver="ShowTip(event, 'tt3', 'link9')" onMouseOut="HideTip('tt3')">have_time()</a> false. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#Runtime.start" id=link10 onMouseOver="ShowTip(event, 'tt7', 'link10')" onMouseOut="HideTip('tt7')">start</a></td><td class=SDescription>Restart the countdown after having called <a href="#Runtime.stop" class=LFunction id=link11 onMouseOver="ShowTip(event, 'tt6', 'link11')" onMouseOut="HideTip('tt6')">stop()</a>. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#Runtime._d" id=link12 onMouseOver="ShowTip(event, 'tt8', 'link12')" onMouseOut="HideTip('tt8')">_d</a></td><td class=SDescription></td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
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<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="Runtime.Functions"></a>Functions</h3></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime.new"></a>new</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub new</td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>%args</td><td class=CDLDescription>Arguments</td></tr></table><h4 class=CHeading>Required Arguments</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>now</td><td class=CDLDescription>Callback that sets current time.</td></tr><tr><td class=CDLEntry>runtime</td><td class=CDLDescription>Amount of time to run in seconds, or undef for forever.</td></tr></table><h4 class=CHeading>Returns</h4><p>Runtime object</p></div></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime.time_left"></a>time_left</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub time_left</td></tr></table></blockquote><p>Return the number of runtime seconds left or undef for forever. The return may be less than zero if the runtime has been exceeded. The first call to this subroutine “starts the clock”, so to speak, if the now callbackup returns a defined value.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>%args</td><td class=CDLDescription>Arguments passed to now callback.</td></tr></table><h4 class=CHeading>Returns</h4><p>Number of runtime seconds left, possibly less than zero, or undef if running forever.</p></div></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime.have_time"></a>have_time</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub have_time</td></tr></table></blockquote><p>Return true or false if there’s runtime left. This sub is a simpler wrapper around <a href="#Runtime.time_left" class=LFunction id=link13 onMouseOver="ShowTip(event, 'tt2', 'link13')" onMouseOut="HideTip('tt2')">time_left()</a> which returns true (1) if time left is defined and greater than zero or undef, else returns false.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>%args</td><td class=CDLDescription>Arguments passed to now callback.</td></tr></table><h4 class=CHeading>Returns</h4><p>True if time left is defined and greater than zero or undef, else false.</p></div></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime.time_elapsed"></a>time_elapsed</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub time_elapsed</td></tr></table></blockquote><p>How much time has elapsed since <a href="#Runtime.time_left" class=LFunction id=link14 onMouseOver="ShowTip(event, 'tt2', 'link14')" onMouseOut="HideTip('tt2')">time_left()</a> was first called.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>%args</td><td class=CDLDescription>Arguments passed to now callback.</td></tr></table><h4 class=CHeading>Returns</h4><p>Number of seconds elapsed since <a href="#Runtime.time_left" class=LFunction id=link15 onMouseOver="ShowTip(event, 'tt2', 'link15')" onMouseOut="HideTip('tt2')">time_left()</a> was first called.</p></div></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime.reset"></a>reset</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub reset</td></tr></table></blockquote><p>Reset this Runtime object for another run. If you want to re-use this object (e.g. for another iteration of the tool’s main loop), call this sub to reset the internally saved times for <a href="#Runtime.time_left" class=LFunction id=link16 onMouseOver="ShowTip(event, 'tt2', 'link16')" onMouseOut="HideTip('tt2')">time_left()</a> and <a href="#Runtime.have_time" class=LFunction id=link17 onMouseOver="ShowTip(event, 'tt3', 'link17')" onMouseOut="HideTip('tt3')">have_time()</a>.</p></div></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime.stop"></a>stop</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub stop</td></tr></table></blockquote><p>Stop the coutdown, make <a href="#Runtime.time_left" class=LFunction id=link18 onMouseOver="ShowTip(event, 'tt2', 'link18')" onMouseOut="HideTip('tt2')">time_left()</a> return 0 and <a href="#Runtime.have_time" class=LFunction id=link19 onMouseOver="ShowTip(event, 'tt3', 'link19')" onMouseOut="HideTip('tt3')">have_time()</a> false. After calling this sub, you must call <a href="#Runtime.start" class=LFunction id=link20 onMouseOver="ShowTip(event, 'tt7', 'link20')" onMouseOut="HideTip('tt7')">start()</a> or <a href="#Runtime.reset" class=LFunction id=link21 onMouseOver="ShowTip(event, 'tt5', 'link21')" onMouseOut="HideTip('tt5')">reset()</a> to recommence the countdown.</p></div></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime.start"></a>start</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub start</td></tr></table></blockquote><p>Restart the countdown after having called <a href="#Runtime.stop" class=LFunction id=link22 onMouseOver="ShowTip(event, 'tt6', 'link22')" onMouseOut="HideTip('tt6')">stop()</a>. Calling this sub has no affect unless <a href="#Runtime.stop" class=LFunction id=link23 onMouseOver="ShowTip(event, 'tt6', 'link23')" onMouseOut="HideTip('tt6')">stop()</a> was called first.</p></div></div></div>
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<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="Runtime._d"></a>_d</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub _d</td></tr></table></blockquote></div></div></div>
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<div class=CToolTip id="tt1"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub new</td></tr></table></blockquote></div></div><div class=CToolTip id="tt2"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub time_left</td></tr></table></blockquote>Return the number of runtime seconds left or undef for forever. </div></div><div class=CToolTip id="tt3"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub have_time</td></tr></table></blockquote>Return true or false if there’s runtime left. </div></div><div class=CToolTip id="tt4"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub time_elapsed</td></tr></table></blockquote>How much time has elapsed since time_left() was first called.</div></div><div class=CToolTip id="tt5"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub reset</td></tr></table></blockquote>Reset this Runtime object for another run. </div></div><div class=CToolTip id="tt6"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub stop</td></tr></table></blockquote>Stop the coutdown, make time_left() return 0 and have_time() false. </div></div><div class=CToolTip id="tt7"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub start</td></tr></table></blockquote>Restart the countdown after having called stop(). </div></div><div class=CToolTip id="tt8"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">sub _d</td></tr></table></blockquote></div></div><!--END_ND_TOOLTIPS-->
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docs/dev/html/files/modules/Runtime-pm.html
