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<th width="60%" align="center">Chapter 8.
The DB_MPOOLFILE Handle
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<h2 class="title" style="clear: both"><a id="mempget_pgcookie"></a>DB_MPOOLFILE->get_pgcookie()</h2>
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<pre class="programlisting">#include <db.h>
int
DB_MPOOLFILE->get_pgcookie(DB_MPOOLFILE *mpf, DBT *dbt); </pre>
<p>
The <code class="methodname">DB_MPOOLFILE->get_pgcookie()</code> method returns the byte string provided
to the functions registered to do input or output processing of the file's pages as they are
read from or written to, the backing filesystem store. This byte string is configured using
the <a class="xref" href="mempset_pgcookie.html" title="DB_MPOOLFILE->set_pgcookie()">DB_MPOOLFILE->set_pgcookie()</a> method.
</p>
<p>
The <code class="methodname">DB_MPOOLFILE->get_pgcookie()</code> method may be called at any time
during the life of the application.
</p>
<p>
The <code class="methodname">DB_MPOOLFILE->get_pgcookie()</code> <span>
<span>
method returns a non-zero error value on failure and 0 on success.
</span>
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<h3 class="title"><a id="idp53553560"></a>Parameters</h3>
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<h4 class="title"><a id="idp53552440"></a>dbt</h4>
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<p>
The <code class="methodname">DB_MPOOLFILE->get_pgcookie()</code> method returns a reference to the
byte string in <span class="bold"><strong>dbt</strong></span>.
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<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>, <a class="link" href="memp.html" title="Chapter 8. The DB_MPOOLFILE Handle">DB_MPOOLFILE</a>
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<a class="xref" href="memp.html#memplist" title="Memory Pools and Related Methods">Memory Pools and Related Methods</a>,
<a class="xref" href="mempset_pgcookie.html" title="DB_MPOOLFILE->set_pgcookie()">DB_MPOOLFILE->set_pgcookie()</a>
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