<?xml version="1.0" encoding="utf-8"?>
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.msg-queue-exists">
 <refnamediv>
  <refname>msg_queue_exists</refname>
  <refpurpose>Check whether a message queue exists</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>msg_queue_exists</methodname>
   <methodparam><type>int</type><parameter>key</parameter></methodparam>
  </methodsynopsis>
  <para>
   Checks whether the message queue <parameter>key</parameter> exists.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>key</parameter></term>
     <listitem>
      <para>
       Queue key.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>msg_remove_queue</function></member>
    <member><function>msg_receive</function></member>
    <member><function>msg_stat_queue</function></member>
   </simplelist>
  </para>
 </refsect1>  

</refentry>

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