reference/sem/functions/shm-has-var.xml
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.shm-has-var">
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<refentry xml:id="function.shm-has-var" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>shm_has_var</refname>
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<refpurpose>Check whether a specific entry exists</refpurpose>
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>shm_has_var</methodname>
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<methodparam><type>resource</type><parameter>shm_identifier</parameter></methodparam>
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<methodparam><type>int</type><parameter>variable_key</parameter></methodparam>
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<methodparam><type>SysvSharedMemory</type><parameter>shm</parameter></methodparam>
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<methodparam><type>int</type><parameter>key</parameter></methodparam>
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</methodsynopsis>
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<para>
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Checks whether a specific key exists inside a shared memory segment.
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>shm_identifier</parameter></term>
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<term><parameter>shm</parameter></term>
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<listitem>
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<para>
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Shared memory segment, obtained from <function>shm_attach</function>.
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A shared memory segment obtained from <function>shm_attach</function>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>variable_key</parameter></term>
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<term><parameter>key</parameter></term>
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<listitem>
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<para>
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The variable key.
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<para>
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>8.0.0</entry>
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<entry>
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<parameter>shm</parameter> expects a <classname>SysvSharedMemory</classname>
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instance now; previously, a <type>resource</type> was expected.
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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