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<pre class=code>
<B><FONT COLOR="#0000FF">signature</FONT></B> MLTON_RUSAGE =
<B><FONT COLOR="#0000FF">sig</FONT></B>
<B><FONT COLOR="#A020F0">type</FONT></B><B><FONT COLOR="#228B22"> t </FONT></B>=<B><FONT COLOR="#228B22"> {utime: Time.time, <I><FONT COLOR="#B22222">(* user time *)</FONT></I>
stime: Time.time} <I><FONT COLOR="#B22222">(* system time *)</FONT></I>
</FONT></B><B><FONT COLOR="#A020F0">val</FONT></B> measureGC: bool -> unit
<B><FONT COLOR="#A020F0">val</FONT></B> rusage: unit -> {children: t, gc: t, self: t}
<B><FONT COLOR="#0000FF">end</FONT></B>
</PRE>
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<tt>type t</tt> <br>
corresponds to a subset of the C <tt>struct rusage</tt>.
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<tt>measureGC b</tt> <br>
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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<tt>rusage ()</tt> <br>
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).
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Last edited on 2007-08-23 03:45:11 by <span title="c-71-57-91-146.hsd1.il.comcast.net"><a href="MatthewFluet">MatthewFluet</a></span>.
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