         <div class="abstract">
                        <p><code>ReadWriteCoordinator</code> instances can be used to coordinate access to a mutable
resource shared across multiple threads.</p>

<p>You can think of the <code>ReadWriteCoordinator</code> as a read/write lock having the
following properties:</p>

<ul>
<li><p>The <em>read lock</em> allows any number of <em>readers</em> to execute concurrently.</p></li>
<li><p>The <em>write lock</em> allows one and only one <em>writer</em> to execute at a time.<