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<title>Issue 2092: Vague Wording for condition_variable_any</title>
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<p><em>This page is a snapshot from the LWG issues list, see the <a href="lwg-active.html">Library Active Issues List</a> for more information and the meaning of <a href="lwg-active.html#C++14">C++14</a> status.</em></p>
<h3 id="2092"><a href="lwg-defects.html#2092">2092</a>. Vague Wording for <code>condition_variable_any</code></h3>
<p><b>Section:</b> 32.7.5 <a href="https://wg21.link/thread.condition.condvarany">[thread.condition.condvarany]</a> <b>Status:</b> <a href="lwg-active.html#C++14">C++14</a>
 <b>Submitter:</b> Pete Becker <b>Opened:</b> 2011-10-20 <b>Last modified:</b> 2016-01-28</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View all other</b> <a href="lwg-index.html#thread.condition.condvarany">issues</a> in [thread.condition.condvarany].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>

<p>
32.7.5 <a href="https://wg21.link/thread.condition.condvarany">[thread.condition.condvarany]</a>&#47;4 says, in part, that 
<code>condition_variable_any()</code> throws an exception 
"if any native handle type manipulated is not available". 
<p/>
I don't know what that means. Is this intended to say something different 
from the analogous words for <code>condition_variable()</code> [32.7.4 <a href="https://wg21.link/thread.condition.condvar">[thread.condition.condvar]</a>&#47;4], 
"if some non-memory resource limitation prevents initialization"? If not, 
it should be worded the same way.
</p>

<p><i>[2012, Kona]</i></p>

<p>
Copy the corresponding wording from the <code>condition_variable</code> constructor in 32.7.4 <a href="https://wg21.link/thread.condition.condvar">[thread.condition.condvar]</a> p4.
<p/>
Move to Review.
</p>

<p><i>[2012, Portland]</i></p>

<p>
Concurrency move to Ready.
</p>

<p><i>[2013-04-20 Bristol]</i></p>




<p id="res-2092"><b>Proposed resolution:</b></p>
<p>This wording is relative to N3337.</p>

<ol>
<li><p>Change 32.6.4.3 <a href="https://wg21.link/thread.timedmutex.requirements">[thread.timedmutex.requirements]</a>&#47;4 as indicated:</p>

<blockquote><pre>
condition_variable_any();
</pre><blockquote>
<p>
[&hellip;]
<p/>
-4- <i>Error conditions</i>:
</p>
<ul>
<li><code>resource_unavailable_try_again</code> &mdash; <del>if any native handle type manipulated is not available</del>
<ins>if some non-memory resource limitation prevents initialization</ins>.</li>
<li><code>operation_not_permitted</code> &mdash; if the thread does not have the privilege to perform the operation.</li>
</ul>
</blockquote></blockquote>

</li>
</ol>






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