 <a href="ref-glossary.html#id27">condition&nbsp;variable</a>
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</p>
<p><span class="fndoclabel">Errors</span> <br />The <a href="ref-glossary.html#gl:lock">lock</a> (or <a href="ref-glossary.html#id194">recursive&nbsp;lock</a>) associated
with <nobr><var>condition-variable</var></nobr> is not held by the executing process.
</p>
<p><span class="fndoclabel">Description</span> <br />If no threads are blocked on <nobr><var>condition-variable</var></nobr>,
this function is a no-op.
</p>
<p><spa