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118 lines
7.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>db_env_set_XXX</title>
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<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB Upgrade Guide" />
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<link rel="up" href="upgrade_4_0_toc.html" title="Chapter 10. Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0" />
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<link rel="prev" href="upgrade_4_0_txn.html" title="txn_XXX" />
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 11.2.5.3</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">db_env_set_XXX</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="upgrade_4_0_txn.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 10. Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0</th>
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<td width="20%" align="right"> <a accesskey="n" href="upgrade_4_0_rpc.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="upgrade_4_0_env"></a>db_env_set_XXX</h2>
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</div>
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</div>
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</div>
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<p>The db_env_set_region_init function was removed in the 4.0 release and
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replaced with the <code class="literal">DB_REGION_INIT</code> flag to the
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<a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> method. This is an interface change: historically,
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the db_env_set_region_init function operated on the entire Berkeley DB
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library, not a single environment. The new method only operates on
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a single <a href="../api_reference/C/env.html" class="olink">DB_ENV class</a> handle (and any handles created in the scope of
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that handle). Applications calling the db_env_set_region_init function
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should update their calls: calls to the historic routine with an
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argument of 1 (0) are equivalent to calling <a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> with
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the <code class="literal">DB_REGION_INIT</code> flag and an argument of 1 (0).</p>
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<p>The db_env_set_tas_spins function was removed in the 4.0 release and
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replaced with the DB_ENV->set_tas_spins method. This is an
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interface change: historically, the db_env_set_tas_spins function
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operated on the entire Berkeley DB library, not a single environment. The new
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method only operates on a single <a href="../api_reference/C/env.html" class="olink">DB_ENV class</a> handle (and any handles
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created in the scope of that handle). Applications calling the
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db_env_set_tas_spins function should update their calls: calls to the
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historic routine are equivalent to calling DB_ENV->set_tas_spins
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with the same argument. In addition, for consistent behavior, all
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<a href="../api_reference/C/env.html" class="olink">DB_ENV class</a> handles opened by the application should make the same
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configuration call, or the value will need to be entered into the
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environment's <a href="../programmer_reference/env_db_config.html" class="olink">DB_CONFIG</a> file.</p>
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<p>Also, three of the standard Berkeley DB debugging interfaces changed in the
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4.0 release. It is quite unlikely that Berkeley DB applications use these
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interfaces.</p>
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<p>The DB_ENV->set_mutexlocks method was removed in the 4.0 release
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and replaced with the <code class="literal">DB_NO_LOCKING</code> flag to the
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<a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> method. Applications calling the
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DB_ENV->set_mutexlocks method should update their calls: calls
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to the historic routine with an argument of 1 (0) are equivalent to
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calling <code class="literal">DB_NO_LOCKING</code> flag and
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an argument of 1 (0).</p>
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<p>The db_env_set_pageyield function was removed in the 4.0 release and
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replaced with the <code class="literal">DB_YIELDCPU</code> flag to the
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<a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> method. This is an interface change: historically,
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the db_env_set_pageyield function operated on the entire Berkeley DB library,
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not a single environment. The new method only operates on a single
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<a href="../api_reference/C/env.html" class="olink">DB_ENV class</a> handle (and any handles created in the scope of that
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handle). Applications calling the db_env_set_pageyield function should
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update their calls: calls to the historic routine with an argument of 1
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(0) are equivalent to calling <a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> with the
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<code class="literal">DB_YIELDCPU</code> flag and an argument of 1 (0). In addition, all
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<a href="../api_reference/C/env.html" class="olink">DB_ENV class</a> handles opened by the application will need to make the
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same call, or the <code class="literal">DB_YIELDCPU</code> flag will need to be entered into
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the environment's <a href="../programmer_reference/env_db_config.html" class="olink">DB_CONFIG</a> file.</p>
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<p>The db_env_set_panicstate function was removed in the 4.0 release,
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replaced with the <code class="literal">DB_PANIC_ENVIRONMENT</code>
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flags to the <a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> method. (The
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<code class="literal">DB_PANIC_ENVIRONMENT</code> flag will cause an environment to panic,
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affecting all threads of control using that environment. The
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<a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> handle to
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ignore the current panic state of the environment.) This is an
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interface change: historically the db_env_set_panicstate function
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operated on the entire Berkeley DB library, not a single environment.
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Applications calling the db_env_set_panicstate function should update
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their calls, replacing the historic call with a call to
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<a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> and the appropriate flag, depending on their
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usage of the historic interface.</p>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="upgrade_4_0_txn.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="upgrade_4_0_toc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="upgrade_4_0_rpc.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">txn_XXX </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> DB_ENV->set_server</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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