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<pre class=code>
<B><FONT COLOR="#5F9EA0">signature</FONT></B> MLTON_RUSAGE <B><FONT COLOR="#5F9EA0">=</FONT></B>
<B><FONT COLOR="#5F9EA0">sig</FONT></B>
<B><FONT COLOR="#A020F0">type</FONT></B> t <B><FONT COLOR="#5F9EA0">=</FONT></B> {utime: Time.time, <I><FONT COLOR="#B22222">(* user time *)</FONT></I>
stime: Time.time} <I><FONT COLOR="#B22222">(* system time *)</FONT></I>
<B><FONT COLOR="#A020F0">val</FONT></B> measureGC: <B><FONT COLOR="#228B22">bool</FONT></B> <B><FONT COLOR="#5F9EA0">-</FONT></B><B><FONT COLOR="#5F9EA0">></FONT></B> <B><FONT COLOR="#228B22">unit</FONT></B>
<B><FONT COLOR="#A020F0">val</FONT></B> rusage: <B><FONT COLOR="#228B22">unit</FONT></B> <B><FONT COLOR="#5F9EA0">-</FONT></B><B><FONT COLOR="#5F9EA0">></FONT></B> {children: t, gc: t, self: t}
<B><FONT COLOR="#A020F0">end</FONT></B>
</PRE>
<p>
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<ul>
<li>
<p>
<tt>type t</tt>
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</li>
<ul>
corresponds to a subset of the C <tt>struct rusage</tt>.
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<li class="gap">
<p>
<tt>measureGC b</tt>
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<ul>
controls whether garbage collection time is separately measured during program execution. This affects the behavior of both <tt>rusage</tt> and <tt>Timer.checkCPUTimes</tt>, both of which will return gc times of zero with <tt>measureGC false</tt>. Garbage collection time is always measured when either <tt>gc-messages</tt> or <tt>gc-summary</tt> is given as a <a href="RunTimeOptions">runtime system option</a>.
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<li class="gap">
<p>
<tt>rusage ()</tt>
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</li>
<ul>
corresponds to the C <tt>getrusage</tt> function. It returns the resource usage of the exited children, the garbage collector, and the process itself. The <tt>self</tt> component includes the usage of the <tt>gc</tt> component, regardless of whether <tt>measureGC</tt> is <tt>true</tt> or <tt>false</tt>. If <tt>rusage</tt> is used in a program, either directly, or indirectly via the <tt>Timer</tt> structure, then <tt>measureGC true</tt> is automatically called at the start of the program (it can still be disable by user code later). </ul>
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<hr>
Last edited on 2006-04-26 04:24:45 by <span title="ppp-71-139-198-197.dsl.snfc21.pacbell.net"><a href="StephenWeeks">StephenWeeks</a></span>.
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