53 lines
4 KiB
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53 lines
4 KiB
HTML
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<TITLE>CLHS: Function GET-INTERNAL-RUN-TIME</TITLE>
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<A NAME="get-internal-run-time"><I>Function</I> <B>GET-INTERNAL-RUN-TIME</B></A> <P>
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<P><B>Syntax:</B><P>
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<P>
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<B>get-internal-run-time</B> <I><I><no arguments></I></I> => <I>internal-time</I><P>
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<P>
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<P><B>Arguments and Values:</B><P>
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<P>
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<I>internal-time</I>---a non-negative <A REL=DEFINITION HREF="26_glo_i.htm#integer"><I>integer</I></A>. <P>
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<P><B>Description:</B><P>
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<P>
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Returns as an <A REL=DEFINITION HREF="26_glo_i.htm#integer"><I>integer</I></A> the current run time in <A REL=DEFINITION HREF="26_glo_i.htm#internal_time_unit"><I>internal time units</I></A>. The precise meaning of this quantity is <A REL=DEFINITION HREF="26_glo_i.htm#implementation-defined"><I>implementation-defined</I></A>; it may measure real time, run time, CPU cycles, or some other quantity. The intent is that the difference between the values of two calls to this function be the amount of time between the two calls during which computational effort was expended on behalf of the executing program. <P>
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<P><B>Examples:</B> None.
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<P>
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<P><B>Side Effects:</B> None.
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<P>
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<P><B>Affected By:</B><P>
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<P>
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The <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementation</I></A>, the time of day (i.e., the passage of time). <P>
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<P><B>Exceptional Situations:</B> None.
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<P>
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<P><B>See Also:</B><P>
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<P>
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<A REL=DEFINITION HREF="v_intern.htm#internal-time-units-per-second"><B>internal-time-units-per-second</B></A> <P>
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<P><B>Notes:</B><P>
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<P>
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Depending on the <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementation</I></A>, paging time and garbage collection time might be included in this measurement. Also, in a multitasking environment, it might not be possible to show the time for just the running process, so in some <A REL=DEFINITION HREF="26_glo_i.htm#implementation"><I>implementations</I></A>, time taken by other processes during the same time interval might be included in this measurement as well. <P>
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