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<body class="manpage">
<div id="header">
<h1>
zmq_atomic_counter_new(3) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>zmq_atomic_counter_new -
create a new atomic counter
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph"><p><strong>void *zmq_atomic_counter_new (void);</strong></p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>The <em>zmq_atomic_counter_new</em> function creates a new atomic counter. You
can use this in multithreaded applications to do, for example, reference
counting of shared objects. The atomic counter is at least 32 bits large.
This function uses platform specific atomic operations.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_return_value">RETURN VALUE</h2>
<div class="sectionbody">
<div class="paragraph"><p>The <em>zmq_atomic_counter_new()</em> function returns the new atomic counter
if successful. Otherwise it returns NULL.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_example">EXAMPLE</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="title">Test code for atomic counters</div>
<div class="content">
<pre><code>void *counter = zmq_atomic_counter_new ();
assert (zmq_atomic_counter_value (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 1);
assert (zmq_atomic_counter_inc (counter) == 2);
assert (zmq_atomic_counter_value (counter) == 3);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_set (counter, 2);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_destroy (&counter);
return 0;</code></pre>
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph"><p><a href="zmq_atomic_counter_set.html">zmq_atomic_counter_set(3)</a>
<a href="zmq_atomic_counter_inc.html">zmq_atomic_counter_inc(3)</a>
<a href="zmq_atomic_counter_dec.html">zmq_atomic_counter_dec(3)</a>
<a href="zmq_atomic_counter_value.html">zmq_atomic_counter_value(3)</a>
<a href="zmq_atomic_counter_destroy.html">zmq_atomic_counter_destroy(3)</a></p></div>
</div>
</div>
<div class="sect1">
<h2 id="_authors">AUTHORS</h2>
<div class="sectionbody">
<div class="paragraph"><p>This page was written by the ØMQ community. To make a change please
read the ØMQ Contribution Policy at <a href="http://www.zeromq.org/docs:contributing">http://www.zeromq.org/docs:contributing</a>.</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
ØMQ 4.3.1<br />
Last updated 2019-01-12 16:17:39 UTC
</div>
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