mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-11-17 01:26:25 +00:00
190 lines
9.1 KiB
HTML
190 lines
9.1 KiB
HTML
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
|||
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|||
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|||
|
|
<head>
|
|||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
|
|||
|
|
<title>Chapter 6. The DB_LOCK Handle</title>
|
|||
|
|
<link rel="stylesheet" href="apiReference.css" type="text/css" />
|
|||
|
|
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
|
|||
|
|
<link rel="start" href="index.html" title="Berkeley DB C API Reference" />
|
|||
|
|
<link rel="up" href="index.html" title="Berkeley DB C API Reference" />
|
|||
|
|
<link rel="prev" href="envversion.html" title="db_version" />
|
|||
|
|
<link rel="next" href="envget_lk_conflicts.html" title="DB_ENV->get_lk_conflicts()" />
|
|||
|
|
</head>
|
|||
|
|
<body>
|
|||
|
|
<div xmlns="" class="navheader">
|
|||
|
|
<div class="libver">
|
|||
|
|
<p>Library Version 11.2.5.2</p>
|
|||
|
|
</div>
|
|||
|
|
<table width="100%" summary="Navigation header">
|
|||
|
|
<tr>
|
|||
|
|
<th colspan="3" align="center">Chapter 6.
|
|||
|
|
The DB_LOCK Handle
|
|||
|
|
</th>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td width="20%" align="left"><a accesskey="p" href="envversion.html">Prev</a> </td>
|
|||
|
|
<th width="60%" align="center"> </th>
|
|||
|
|
<td width="20%" align="right"> <a accesskey="n" href="envget_lk_conflicts.html">Next</a></td>
|
|||
|
|
</tr>
|
|||
|
|
</table>
|
|||
|
|
<hr />
|
|||
|
|
</div>
|
|||
|
|
<div class="chapter" lang="en" xml:lang="en">
|
|||
|
|
<div class="titlepage">
|
|||
|
|
<div>
|
|||
|
|
<div>
|
|||
|
|
<h2 class="title"><a id="lock"></a>Chapter 6.
|
|||
|
|
The DB_LOCK Handle
|
|||
|
|
</h2>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<pre class="programlisting">#include <db.h>
|
|||
|
|
|
|||
|
|
typedef struct __db_lock_u DB_LOCK; </pre>
|
|||
|
|
<p>
|
|||
|
|
The locking interfaces for the Berkeley DB database environment
|
|||
|
|
are methods of the <a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>
|
|||
|
|
handle. The <code class="classname">DB_LOCK</code> object is
|
|||
|
|
the handle for a single lock, and has no methods of its own.
|
|||
|
|
</p>
|
|||
|
|
<div class="sect1" lang="en" xml:lang="en">
|
|||
|
|
<div class="titlepage">
|
|||
|
|
<div>
|
|||
|
|
<div>
|
|||
|
|
<h2 class="title" style="clear: both"><a id="locklist"></a>Locking Subsystem and Related Methods</h2>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="navtable">
|
|||
|
|
<table border="1" width="80%">
|
|||
|
|
<thead>
|
|||
|
|
<tr>
|
|||
|
|
<th>Locking Subsystem and Related Methods</th>
|
|||
|
|
<th>Description</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead>
|
|||
|
|
<tbody>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockdetect.html" title="DB_ENV->lock_detect()">DB_ENV->lock_detect()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Perform deadlock detection</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockget.html" title="DB_ENV->lock_get()">DB_ENV->lock_get()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Acquire a lock</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockid.html" title="DB_ENV->lock_id()">DB_ENV->lock_id()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Acquire a locker ID</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockid_free.html" title="DB_ENV->lock_id_free()">DB_ENV->lock_id_free()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Release a locker ID</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockput.html" title="DB_ENV->lock_put()">DB_ENV->lock_put()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Release a lock</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockstat.html" title="DB_ENV->lock_stat()">DB_ENV->lock_stat()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Return lock subsystem statistics</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockstat_print.html" title="DB_ENV->lock_stat_print()">DB_ENV->lock_stat_print()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Print lock subsystem statistics</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="lockvec.html" title="DB_ENV->lock_vec()">DB_ENV->lock_vec()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Acquire/release locks</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td>
|
|||
|
|
<a class="xref" href="envcdsgroup_begin.html" title="DB_ENV->cdsgroup_begin()">DB_ENV->cdsgroup_begin()</a>
|
|||
|
|
</td>
|
|||
|
|
<td>Get a locker ID in Berkeley DB Concurrent Data Store</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td colspan="2">
|
|||
|
|
<span class="bold">
|
|||
|
|
<strong>Locking Subsystem Configuration</strong>
|
|||
|
|
</span>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_timeout.html" title="DB_ENV->set_timeout()">DB_ENV->set_timeout()</a>, <a class="xref" href="envget_timeout.html" title="DB_ENV->get_timeout()">DB_ENV->get_timeout()</a></td>
|
|||
|
|
<td>Set/get lock and transaction timeout</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_conflicts.html" title="DB_ENV->set_lk_conflicts()">DB_ENV->set_lk_conflicts()</a>, <a class="xref" href="envget_lk_conflicts.html" title="DB_ENV->get_lk_conflicts()">DB_ENV->get_lk_conflicts()</a></td>
|
|||
|
|
<td>Set/get lock conflicts matrix</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_detect.html" title="DB_ENV->set_lk_detect()">DB_ENV->set_lk_detect()</a>, <a class="xref" href="envget_lk_detect.html" title="DB_ENV->get_lk_detect()">DB_ENV->get_lk_detect()</a></td>
|
|||
|
|
<td>Set/get automatic deadlock detection</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_max_lockers.html" title="DB_ENV->set_lk_max_lockers()">DB_ENV->set_lk_max_lockers()</a>, <a class="xref" href="envget_lk_max_lockers.html" title="DB_ENV->get_lk_max_lockers()">DB_ENV->get_lk_max_lockers()</a></td>
|
|||
|
|
<td>Set/get maximum number of lockers</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_max_locks.html" title="DB_ENV->set_lk_max_locks()">DB_ENV->set_lk_max_locks()</a>, <a class="xref" href="envget_lk_max_locks.html" title="DB_ENV->get_lk_max_locks()">DB_ENV->get_lk_max_locks()</a></td>
|
|||
|
|
<td>Set/get maximum number of locks</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_max_objects.html" title="DB_ENV->set_lk_max_objects()">DB_ENV->set_lk_max_objects()</a>, <a class="xref" href="envget_lk_max_objects.html" title="DB_ENV->get_lk_max_objects()">DB_ENV->get_lk_max_objects()</a></td>
|
|||
|
|
<td>Set/get maximum number of lock objects</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_partitions.html" title="DB_ENV->set_lk_partitions()">DB_ENV->set_lk_partitions()</a>, <a class="xref" href="envget_lk_partitions.html" title="DB_ENV->get_lk_partitions()">DB_ENV->get_lk_partitions()</a></td>
|
|||
|
|
<td>Set/get number of lock partitions</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_priority.html" title="DB_ENV->set_lk_priority()">DB_ENV->set_lk_priority()</a>, <a class="xref" href="envget_lk_priority.html" title="DB_ENV->get_lk_priority()">DB_ENV->get_lk_priority()</a></td>
|
|||
|
|
<td>Set/get a locker's deadlock priority</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td><a class="xref" href="envset_lk_tablesize.html" title="DB_ENV->set_lk_tablesize()">DB_ENV->set_lk_tablesize()</a>, <a class="xref" href="envget_lk_tablesize.html" title="DB_ENV->get_lk_tablesize()">DB_ENV->get_lk_tablesize()</a></td>
|
|||
|
|
<td>Set/get size of the lock object hash table</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="navfooter">
|
|||
|
|
<hr />
|
|||
|
|
<table width="100%" summary="Navigation footer">
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left"><a accesskey="p" href="envversion.html">Prev</a> </td>
|
|||
|
|
<td width="20%" align="center"> </td>
|
|||
|
|
<td width="40%" align="right"> <a accesskey="n" href="envget_lk_conflicts.html">Next</a></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left" valign="top">db_version </td>
|
|||
|
|
<td width="20%" align="center">
|
|||
|
|
<a accesskey="h" href="index.html">Home</a>
|
|||
|
|
</td>
|
|||
|
|
<td width="40%" align="right" valign="top"> DB_ENV->get_lk_conflicts()</td>
|
|||
|
|
</tr>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|