mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-11-17 01:26:25 +00:00
253 lines
9.6 KiB
HTML
253 lines
9.6 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>DB_ENV->set_tmp_dir()</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="env.html" title="Chapter 5. The DB_ENV Handle" />
|
||
<link rel="prev" href="envset_timeout.html" title="DB_ENV->set_timeout()" />
|
||
<link rel="next" href="envset_verbose.html" title="DB_ENV->set_verbose()" />
|
||
</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">DB_ENV->set_tmp_dir()</th>
|
||
</tr>
|
||
<tr>
|
||
<td width="20%" align="left"><a accesskey="p" href="envset_timeout.html">Prev</a> </td>
|
||
<th width="60%" align="center">Chapter 5.
|
||
The DB_ENV Handle
|
||
</th>
|
||
<td width="20%" align="right"> <a accesskey="n" href="envset_verbose.html">Next</a></td>
|
||
</tr>
|
||
</table>
|
||
<hr />
|
||
</div>
|
||
<div class="sect1" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h2 class="title" style="clear: both"><a id="envset_tmp_dir"></a>DB_ENV->set_tmp_dir()</h2>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<pre class="programlisting">#include <db.h>
|
||
|
||
int
|
||
DB_ENV->set_tmp_dir(DB_ENV *dbenv, const char *dir); </pre>
|
||
<p>
|
||
Specify the path of a directory to be used as the location of
|
||
temporary files. The files created to back in-memory access method
|
||
databases will be created relative to this path. These temporary
|
||
files can be quite large, depending on the size of the database.
|
||
</p>
|
||
<p>
|
||
If no directories are specified, the following alternatives are
|
||
checked in the specified order. The first existing directory path is
|
||
used for all temporary files.
|
||
</p>
|
||
<div class="orderedlist">
|
||
<ol type="1">
|
||
<li>
|
||
<p>
|
||
The value of the environment variable <span class="bold"><strong>TMPDIR</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The value of the environment variable <span class="bold"><strong>TEMP</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The value of the environment variable <span class="bold"><strong>TMP</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The value of the environment variable <span class="bold"><strong>TempFolder</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The value returned by the <span class="bold"><strong>GetTempPath</strong></span> interface.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The directory <span class="bold"><strong>/var/tmp</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The directory <span class="bold"><strong>/usr/tmp</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The directory <span class="bold"><strong>/temp</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The directory <span class="bold"><strong>/tmp</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The directory <span class="bold"><strong>C:/temp</strong></span>.
|
||
</p>
|
||
</li>
|
||
<li>
|
||
<p>
|
||
The directory <span class="bold"><strong>C:/tmp</strong></span>.
|
||
</p>
|
||
</li>
|
||
</ol>
|
||
</div>
|
||
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
|
||
<h3 class="title">Note</h3>
|
||
<p>
|
||
Environment variables are only checked if one of the
|
||
<a class="link" href="envopen.html#envopen_DB_USE_ENVIRON">DB_USE_ENVIRON</a> or
|
||
<a class="link" href="envopen.html#envopen_DB_USE_ENVIRON_ROOT">DB_USE_ENVIRON_ROOT</a>
|
||
flags were specified.
|
||
</p>
|
||
</div>
|
||
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
|
||
<h3 class="title">Note</h3>
|
||
<p>
|
||
The GetTempPath interface is only checked on Win/32 platforms.
|
||
</p>
|
||
</div>
|
||
<p>
|
||
The database environment's temporary file directory may also be
|
||
configured using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file. The syntax
|
||
of the entry in that file is a single line with the string
|
||
"set_tmp_dir", one or more whitespace characters, and the
|
||
directory name. Because the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read when the
|
||
database environment is opened, it will silently overrule
|
||
configuration done before that time.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->set_tmp_dir()</code> method configures operations performed
|
||
using the specified <a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a> handle, not all
|
||
operations performed on the underlying database environment.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->set_tmp_dir()</code> <span>
|
||
<span>
|
||
method returns a non-zero error value on failure and 0 on success.
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="id3718887"></a>Parameters</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="id3718547"></a>dir</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <span class="bold"><strong>dir</strong></span> parameter is the directory to
|
||
be used to store temporary files.
|
||
</p>
|
||
<p>
|
||
When using a Unicode build on Windows (the default), the this argument will be interpreted
|
||
as a UTF-8 string, which is equivalent to ASCII for Latin characters.
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="id3717570"></a>Errors</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->set_tmp_dir()</code> <span>
|
||
<span>
|
||
method may fail and return one of the following non-zero errors:
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="id3718608"></a>EINVAL</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
If the method was called after <a class="xref" href="envopen.html" title="DB_ENV->open()">DB_ENV->open()</a>
|
||
was called; or if an invalid flag value or parameter was specified.
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="id3718599"></a>Class</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>
|
||
</p>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="id3718144"></a>See Also</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a>
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="navfooter">
|
||
<hr />
|
||
<table width="100%" summary="Navigation footer">
|
||
<tr>
|
||
<td width="40%" align="left"><a accesskey="p" href="envset_timeout.html">Prev</a> </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="u" href="env.html">Up</a>
|
||
</td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="envset_verbose.html">Next</a></td>
|
||
</tr>
|
||
<tr>
|
||
<td width="40%" align="left" valign="top">DB_ENV->set_timeout() </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="h" href="index.html">Home</a>
|
||
</td>
|
||
<td width="40%" align="right" valign="top"> DB_ENV->set_verbose()</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|