lock.</strong></p>
<h1 id="al_unlock_mutex"><a href="#TOC">al_unlock_mutex</a></h1>
<pre><code>void al_unlock_mutex(ALLEGRO_MUTEX *mutex)
</code></pre>
<p>Release the lock on <code>mutex</code> if the calling thread holds the lock on it.</p>
<p>If the calling thread doesn't hold the lock, or if the mutex is not locked, undefined behaviour results.</p>
<p>See also: <a href="threads.html#al_lock_mutex">al_lock_mutex</a>.</p>
<h1 id="al_destroy_mutex"><a href="#TOC">al_destroy_mutex</a></h1>
<pre><code>void al