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<th colspan="3" align="center">DbEnv::lock_stat_print()</th>
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<td width="20%" align="left"><a accesskey="p" href="lockstat.html">Prev</a> </td>
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The DbLock Handle
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<h2 class="title" style="clear: both"><a id="lockstat_print"></a>DbEnv::lock_stat_print()</h2>
</div>
</div>
</div>
<pre class="programlisting">#include <db_cxx.h>
int
DbEnv::lock_stat_print(u_int32_t flags);</pre>
<p>
The <code class="methodname">DbEnv::lock_stat_print()</code> method displays the locking subsystem
statistical information, as described for the <code class="methodname">DbEnv::lock_stat()</code>
method. The information is printed to a specified output channel (see
the <a class="xref" href="envset_msgfile.html" title="DbEnv::set_msgfile()">DbEnv::set_msgfile()</a>
method for more information), or passed to an application callback
function (see the
<a class="xref" href="envset_msgcall.html" title="DbEnv::set_msgcall()">DbEnv::set_msgcall()</a>
method for more information).
</p>
<p>
The <code class="methodname">DbEnv::lock_stat_print()</code> method may not be called before the
<a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a> method is
called.
</p>
<p>
The <code class="methodname">DbEnv::lock_stat_print()</code> <span>
<span>
method either returns a non-zero error value or throws an
exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
</span>
</span>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp2762824"></a>Parameters</h3>
</div>
</div>
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<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="idp2763544"></a>flags</h4>
</div>
</div>
</div>
<p>
The <span class="bold"><strong>flags</strong></span> parameter must be set to 0
or by bitwise inclusively <span class="bold"><strong>OR</strong></span>'ing
together one or more of the following values:
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p><a id="lockstat_print_DB_STAT_ALL"></a>
<code class="literal">DB_STAT_ALL</code>
</p>
<p>
Display all available information. For each object,
the amount of data displayed is limited to 100
bytes, unless some other limit is set
using the DB_CONFIG "set_data_len" parameter.
</p>
</li>
<li>
<p><a id="lockstat_print_DB_STAT_ALLOC"></a>
<code class="literal">DB_STAT_ALLOC</code>
</p>
<p>
Display allocation information. To display allocation information, both
DB_STAT_ALLOC and DB_STAT_ALL need to be set.
</p>
</li>
<li>
<p><a id="envsat_print_DB_STAT_CLEAR"></a>
<code class="literal">DB_STAT_CLEAR</code>
</p>
<p>
Reset statistics after displaying their values.
</p>
</li>
<li>
<p><a id="envsat_print_DB_STAT_LOCK_CONF"></a>
<code class="literal">DB_STAT_LOCK_CONF</code>
</p>
<p>
Display the lock conflict matrix.
</p>
</li>
<li>
<p><a id="envsat_print_DB_STAT_LOCK_LOCKERS"></a>
<code class="literal">DB_STAT_LOCK_LOCKERS</code>
</p>
<p>
Display the lockers within hash chains.
</p>
</li>
<li>
<p><a id="envsat_print_DB_STAT_LOCK_OBJECTS"></a>
<code class="literal">DB_STAT_LOCK_OBJECTS</code>
</p>
<p>
Display the lock objects within hash chains. For
each object, the amount of data displayed is
limited to 100 bytes, unless some other limit is
set
using the DB_CONFIG "set_data_len" parameter.
</p>
</li>
<li>
<p><a id="envsat_print_DB_STAT_LOCK_PARAMS"></a>
<code class="literal">DB_STAT_LOCK_PARAMS</code>
</p>
<p>
Display the locking subsystem parameters.
</p>
</li>
</ul>
</div>
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</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp2806800"></a>Class</h3>
</div>
</div>
</div>
<p>
<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>,
<a class="link" href="lock.html" title="Chapter 7. The DbLock Handle">DbLock</a>
</p>
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<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp2784568"></a>See Also</h3>
</div>
</div>
</div>
<p>
<a class="xref" href="lock.html#locklist" title="Locking Subsystem and Related Methods">Locking Subsystem and Related Methods</a>
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