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-<table class="head">
- <tr>
- <td class="head-ltitle">PTHREAD_MUTEX_CONSISTENT(3)</td>
- <td class="head-vol">Library Functions Manual</td>
- <td class="head-rtitle">PTHREAD_MUTEX_CONSISTENT(3)</td>
- </tr>
-</table>
-<div class="manual-text">
-<section class="Sh">
-<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-<p class="Pp"><code class="Nm">pthread_mutex_consistent</code> &#x2014;
- <span class="Nd">mark state protected by robust mutex as
- consistent</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1>
-<p class="Pp"><span class="Lb">POSIX Threads Library (libpthread,
- -lpthread)</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
-<p class="Pp"><code class="In">#include
- &lt;<a class="In">pthread.h</a>&gt;</code></p>
-<p class="Pp"><var class="Ft">int</var>
- <br/>
- <code class="Fn">pthread_mutex_consistent</code>(<var class="Fa" style="white-space: nowrap;">pthread_mutex_t
- *mutex</var>);</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<p class="Pp">If the process containing the thread owning a robust mutex
- terminates while holding the mutex, the mutex becomes inconsistent and the
- next thread that acquires the mutex lock is notified of the state by the
- return value <code class="Er">EOWNERDEAD</code>. In this case, the mutex
- does not become normally usable again until the state is marked
- consistent.</p>
-<p class="Pp" id="pthread_mutex_consistent">The
- <a class="permalink" href="#pthread_mutex_consistent"><code class="Fn">pthread_mutex_consistent</code></a>(),
- when called with the <var class="Fa">mutex</var> argument, which points to
- the initialized robust mutex in an inconsistent state, marks the by mutex as
- consistent again. The consequent unlock of the mutex, by either
- <a class="permalink" href="#pthread_mutex_unlock"><code class="Fn" id="pthread_mutex_unlock">pthread_mutex_unlock</code></a>()
- or other methods, allows other contenders to lock the mutex.</p>
-<p class="Pp" id="pthread_mutex_consistent~2">If the mutex in the inconsistent
- state is not marked consistent by the call to
- <a class="permalink" href="#pthread_mutex_consistent~2"><code class="Fn">pthread_mutex_consistent</code></a>()
- before unlock, further attempts to lock the <var class="Fa">mutex</var>
- result in the <code class="Er">ENOTRECOVERABLE</code> condition reported by
- the locking functions.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
- VALUES</a></h1>
-<p class="Pp">If successful, <code class="Fn">pthread_mutex_consistent</code>()
- will return zero, otherwise an error number will be returned to indicate the
- error.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="ERRORS"><a class="permalink" href="#ERRORS">ERRORS</a></h1>
-<p class="Pp">The <code class="Fn">pthread_mutex_lock</code>() function will
- fail if:</p>
-<dl class="Bl-tag">
- <dt id="EINVAL">[<a class="permalink" href="#EINVAL"><code class="Er">EINVAL</code></a>]</dt>
- <dd>The mutex pointed to by the <var class="Fa">mutex</var> argument is not
- robust, or is not in the inconsistent state.</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">pthread_mutex_init(3)</a>,
- <a class="Xr">pthread_mutex_lock(3)</a>,
- <a class="Xr">pthread_mutex_unlock(3)</a>,
- <a class="Xr">pthread_mutexattr_setrobust(3)</a></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="STANDARDS"><a class="permalink" href="#STANDARDS">STANDARDS</a></h1>
-<p class="Pp">The <code class="Fn">pthread_mutex_lock</code>() function conforms
- to <span class="St">Version&#x00A0;4 of the Single UNIX Specification
- (&#x201C;SUSv4&#x201D;)</span>.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">March 27, 2017</td>
- <td class="foot-os">FreeBSD 15.0</td>
- </tr>
-</table>