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<h2>
<a name="1207311"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">kernel_idle</font>
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<a name="1207312"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Return the kernel idle time</font>
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<a name="1207313"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
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<a name="1207314"> </a><font size=2 face=Courier><strong>#include <kernel.h><br></strong></font>
<a name="1207315"> </a><font size=2 face=Courier><strong>clock_t kernel_idle( void );<br></strong></font>
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<a name="1207316"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
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<a name="1207317"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<a name="1207318"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Results</font>
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<a name="1207319"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Returns a clock value indicating the kernel idle time, or <font size=2 face=Courier><strong>0</strong></font> if the kernel has not been built with time-logging enabled.</font>
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<a name="1207320"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
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<a name="1207321"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
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<a name="1207322"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
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<p>
<a name="1207323"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><font size=2 face=Courier><strong>kernel_idle()</strong></font> returns a clock value indicating the time the kernel has been idle, that is, the time not executing code. Idle time occurs when there is no valid task or interrupt and the task queues are empty.</font>
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<p>
<a name="1207324"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The idle time is measured by recording the accumulation of intervals between the time when the kernel becomes idle and the time when it becomes active again.</font>
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<a name="1207325"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Callable from</font>
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<p>
<a name="1207326"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><font size=2 face=Courier><strong>kernel_idle()</strong></font> can only be called from a task.</font>
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<a name="1207327"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">See also</font>
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<a name="1272231"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><a href="libs61.htm#1207406"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>kernel_time</i></font></a></font>
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