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libdb/docs/api_reference/CXX/mutex.html
Gregory Burd eff277ac23 Release 5.2.28 on 6/10/2011
2011-09-13 13:44:24 -04:00

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<title>Chapter 10.  Mutex Methods</title>
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<th colspan="3" align="center">Chapter 10. 
Mutex Methods
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<h2 class="title"><a id="mutex"></a>Chapter 10. 
Mutex Methods
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<p>
This chapter describes methods that can be used to manage
mutexes within DB. Many of the methods described here
are used to configure DB's internal mutex system.
However, a series of APIs are available for use as a
general-purpose, cross platform mutex management system.
These methods can be used independently of DB's main
purpose, which is as a high-end data management engine.
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<h2 class="title" style="clear: both"><a id="mutexlist"></a>Mutex Methods</h2>
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<th>Mutexes and Related Methods</th>
<th>Description</th>
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<tr>
<td>
<a class="xref" href="mutexalloc.html" title="DbEnv::mutex_alloc()">DbEnv::mutex_alloc()</a>
</td>
<td>Allocate a mutex</td>
</tr>
<tr>
<td>
<a class="xref" href="mutexfree.html" title="DbEnv::mutex_free()">DbEnv::mutex_free()</a>
</td>
<td>Free a mutex</td>
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<a class="xref" href="mutexlock.html" title="DbEnv::mutex_lock()">DbEnv::mutex_lock()</a>
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<td>Lock a mutex</td>
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<a class="xref" href="mutexstat.html" title="DbEnv::mutex_stat()">DbEnv::mutex_stat()</a>
</td>
<td>Mutex statistics</td>
</tr>
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<td>
<a class="xref" href="mutexstat_print.html" title="DbEnv::mutex_stat_print()">DbEnv::mutex_stat_print()</a>
</td>
<td>Print mutex statistics</td>
</tr>
<tr>
<td>
<a class="xref" href="mutexunlock.html" title="DbEnv::mutex_unlock()">DbEnv::mutex_unlock()</a>
</td>
<td>Unlock a mutex</td>
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<td colspan="2">
<span class="bold">
<strong>Mutex Configuration</strong>
</span>
</td>
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<tr>
<td><a class="xref" href="mutexset_align.html" title="DbEnv::mutex_set_align()">DbEnv::mutex_set_align()</a>, <a class="xref" href="mutexget_align.html" title="DbEnv::mutex_get_align()">DbEnv::mutex_get_align()</a></td>
<td>Configure mutex alignment</td>
</tr>
<tr>
<td><a class="xref" href="mutexset_increment.html" title="DbEnv::mutex_set_increment()">DbEnv::mutex_set_increment()</a>, <a class="xref" href="mutexget_increment.html" title="DbEnv::mutex_get_increment()">DbEnv::mutex_get_increment()</a></td>
<td>Configure number of additional mutexes</td>
</tr>
<tr>
<td><a class="xref" href="mutexset_init.html" title="DbEnv::mutex_set_init()">DbEnv::mutex_set_init()</a>, <a class="xref" href="mutexget_init.html" title="DbEnv::mutex_get_init()">DbEnv::mutex_get_init()</a></td>
<td>Configure initial number of mutexes</td>
</tr>
<tr>
<td><a class="xref" href="mutexset_max.html" title="DbEnv::mutex_set_max()">DbEnv::mutex_set_max()</a>, <a class="xref" href="mutexget_max.html" title="DbEnv::mutex_get_max()">DbEnv::mutex_get_max()</a></td>
<td>Configure total number of mutexes</td>
</tr>
<tr>
<td><a class="xref" href="mutexset_tas_spins.html" title="DbEnv::mutex_set_tas_spins()">DbEnv::mutex_set_tas_spins()</a>, <a class="xref" href="mutexget_tas_spins.html" title="DbEnv::mutex_get_tas_spins()">DbEnv::mutex_get_tas_spins()</a></td>
<td>Configure test-and-set mutex spin count</td>
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