1<?xml version="1.0" encoding="UTF-8" standalone="no"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>Release 4.0: lock_XXX</title> 7 <link rel="stylesheet" href="gettingStarted.css" type="text/css" /> 8 <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> 9 <link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" /> 10 <link rel="up" href="upgrade_4_0_toc.html" title="Chapter��37.��Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0" /> 11 <link rel="prev" href="upgrade_4_0_deadlock.html" title="Release 4.0: db_deadlock" /> 12 <link rel="next" href="upgrade_4_0_log.html" title="Release 4.0: log_XXX" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">Release 4.0: lock_XXX</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="upgrade_4_0_deadlock.html">Prev</a>��</td> 22 <th width="60%" align="center">Chapter��37.��Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0</th> 23 <td width="20%" align="right">��<a accesskey="n" href="upgrade_4_0_log.html">Next</a></td> 24 </tr> 25 </table> 26 <hr /> 27 </div> 28 <div class="sect1" lang="en" xml:lang="en"> 29 <div class="titlepage"> 30 <div> 31 <div> 32 <h2 class="title" style="clear: both"><a id="upgrade_4_0_lock"></a>Release 4.0: lock_XXX</h2> 33 </div> 34 </div> 35 </div> 36 <p>The C API for the Berkeley DB Locking subsystem was reworked in the 4.0 37release as follows:</p> 38 <div class="informaltable"> 39 <table border="1" width="80%"> 40 <colgroup> 41 <col /> 42 <col /> 43 </colgroup> 44 <thead> 45 <tr> 46 <th>Historic functional interface</th> 47 <th>Berkeley DB 4.X method</th> 48 </tr> 49 </thead> 50 <tbody> 51 <tr> 52 <td>lock_detect</td> 53 <td> 54 <a href="../api_reference/C/lockdetect.html" class="olink">DB_ENV->lock_detect()</a> 55 </td> 56 </tr> 57 <tr> 58 <td>lock_get</td> 59 <td> 60 <a href="../api_reference/C/lockget.html" class="olink">DB_ENV->lock_get()</a> 61 </td> 62 </tr> 63 <tr> 64 <td>lock_id</td> 65 <td> 66 <a href="../api_reference/C/lockid.html" class="olink">DB_ENV->lock_id()</a> 67 </td> 68 </tr> 69 <tr> 70 <td>lock_put</td> 71 <td> 72 <a href="../api_reference/C/lockput.html" class="olink">DB_ENV->lock_put()</a> 73 </td> 74 </tr> 75 <tr> 76 <td>lock_stat</td> 77 <td> 78 <a href="../api_reference/C/lockstat.html" class="olink">DB_ENV->lock_stat()</a> 79 </td> 80 </tr> 81 <tr> 82 <td>lock_vec</td> 83 <td> 84 <a href="../api_reference/C/lockvec.html" class="olink">DB_ENV->lock_vec()</a> 85 </td> 86 </tr> 87 </tbody> 88 </table> 89 </div> 90 <p>Applications calling any of these functions should update their calls 91to use the enclosing <a href="../api_reference/C/env.html" class="olink">DB_ENV</a> handle's method (easily done as the 92first argument to the existing call is the correct handle to use).</p> 93 <p>In addition, the <a href="../api_reference/C/lockstat.html" class="olink">DB_ENV->lock_stat()</a> call has been changed in the 4.0 94release to take a flags argument. To leave their historic behavior 95unchanged, applications should add a final argument of 0 to any calls 96made to <a href="../api_reference/C/lockstat.html" class="olink">DB_ENV->lock_stat()</a>.</p> 97 <p>The C++ and Java APIs for the DbLock::put (DbLock.put) method was 98reworked in the 4.0 release to make the lock put interface a method of 99the <a href="../api_reference/C/env.html" class="olink">DB_ENV</a> handle rather than the DbLock handle. Applications 100calling the DbLock::put or DbLock.put method should update their calls 101to use the enclosing <a href="../api_reference/C/env.html" class="olink">DB_ENV</a> handle's method (easily done as the 102first argument to the existing call is the correct handle to use).</p> 103 </div> 104 <div class="navfooter"> 105 <hr /> 106 <table width="100%" summary="Navigation footer"> 107 <tr> 108 <td width="40%" align="left"><a accesskey="p" href="upgrade_4_0_deadlock.html">Prev</a>��</td> 109 <td width="20%" align="center"> 110 <a accesskey="u" href="upgrade_4_0_toc.html">Up</a> 111 </td> 112 <td width="40%" align="right">��<a accesskey="n" href="upgrade_4_0_log.html">Next</a></td> 113 </tr> 114 <tr> 115 <td width="40%" align="left" valign="top">Release 4.0: db_deadlock��</td> 116 <td width="20%" align="center"> 117 <a accesskey="h" href="index.html">Home</a> 118 </td> 119 <td width="40%" align="right" valign="top">��Release 4.0: log_XXX</td> 120 </tr> 121 </table> 122 </div> 123 </body> 124</html> 125