mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-11-16 17:16:25 +00:00
123 lines
6.6 KiB
HTML
123 lines
6.6 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>Windows Mobile FAQ</title>
|
||
<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
|
||
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
|
||
<link rel="start" href="index.html" title="Berkeley DB Installation and Build Guide" />
|
||
<link rel="up" href="build_wince.html" title="Chapter 6. Building Berkeley DB for Windows Mobile" />
|
||
<link rel="prev" href="build_wince_notes.html" title="Windows Mobile notes" />
|
||
<link rel="next" href="build_unix.html" title="Chapter 7. Building Berkeley DB for UNIX/POSIX" />
|
||
</head>
|
||
<body>
|
||
<div xmlns="" class="navheader">
|
||
<div class="libver">
|
||
<p>Library Version 11.2.5.3</p>
|
||
</div>
|
||
<table width="100%" summary="Navigation header">
|
||
<tr>
|
||
<th colspan="3" align="center">Windows Mobile FAQ</th>
|
||
</tr>
|
||
<tr>
|
||
<td width="20%" align="left"><a accesskey="p" href="build_wince_notes.html">Prev</a> </td>
|
||
<th width="60%" align="center">Chapter 6.
|
||
Building Berkeley DB for Windows Mobile
|
||
</th>
|
||
<td width="20%" align="right"> <a accesskey="n" href="build_unix.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="build_wince_faq"></a>Windows Mobile FAQ</h2>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="orderedlist">
|
||
<ol type="1">
|
||
<li>
|
||
<span class="bold">
|
||
<strong>What if my Windows Mobile device does not support SetFilePointer and/or SetEndOfFile?</strong>
|
||
</span>
|
||
<p>You can manually disable the truncate functionality from the build.</p>
|
||
<p>Do that by opening the <code class="filename">db-X.X.X/build_wince/db_config.h</code> file, and change the line that reads </p>
|
||
<pre class="programlisting">#define HAVE_FTRUCATE 1</pre>
|
||
<p> to read </p>
|
||
<pre class="programlisting">#undef HAVE_FTRUNCATE</pre>
|
||
<p>Making this change disables <a href="../api_reference/C/dbcompact.html" class="olink">DB->compact()</a> for btree databases.</p>
|
||
</li>
|
||
<li>
|
||
<span class="bold">
|
||
<strong>Why doesn't automatic log archiving work?</strong>
|
||
</span>
|
||
<p>The Windows Mobile platform does not have a concept of a working directory. This means that the <a href="../api_reference/C/logarchive.html#archive_DB_ARCH_REMOVE" class="olink">DB_ARCH_REMOVE</a> and <a href="../api_reference/C/logarchive.html#archive_DB_ARCH_ABS" class="olink">DB_ARCH_ABS</a> flags do not work properly within Windows Mobile, because they rely on having a working directory.</p>
|
||
<p> To work around this issue, you can call log_archive with the <a href="../api_reference/C/logarchive.html#archive_DB_ARCH_LOG" class="olink">DB_ARCH_LOG</a> flag, the list of returned file handles will not contain absolute paths. Your application can take this list of files, construct absolute paths, and delete the files.</p>
|
||
</li>
|
||
<li>
|
||
<span class="bold">
|
||
<strong>Does Berkeley DB support Windows Mobile?</strong>
|
||
</span>
|
||
<p>Yes. </p>
|
||
<p>Berkeley DB relies on a subset of the Windows API, and some standard C library APIs. These are provided by Windows CE. Windows Mobile is built "on top" of Windows CE.</p>
|
||
</li>
|
||
<li>
|
||
<span class="bold">
|
||
<strong>Does Berkeley DB support Windows CE?</strong>
|
||
</span>
|
||
<p>Yes. </p>
|
||
<p>Berkeley DB relies on a subset of the Windows API, and some standard C library APIs. These are provided by Windows CE.</p>
|
||
</li>
|
||
<li>
|
||
<span class="bold">
|
||
<strong>What platforms are the supplied sample applications designed for?</strong>
|
||
</span>
|
||
<p>The supplied sample applications were developed for the Pocket PC 2003 emulator. They are known to work on real pocket PC devices and later versions of the emulator as well.</p>
|
||
<p>The supplied applications are not designed to work with Smartphone devices. The screen size and input mechanisms are not compatible.</p>
|
||
</li>
|
||
<li>
|
||
<span class="bold">
|
||
<strong>I see a file mapping error when opening a Berkeley DB environment or database. What is wrong?</strong>
|
||
</span>
|
||
<p>The default behavior of Berkeley DB is to use memory mapped files in the environment. Windows Mobile does not allow memory mapped files to be created on flash storage.</p>
|
||
<p>There are two workarounds:</p>
|
||
<div class="orderedlist">
|
||
<ol type="a">
|
||
<li>
|
||
Configure the Berkeley DB environment not to use memory mapped files. The options are discussed in detail in
|
||
<a href="../programmer_reference/env_region.html" class="olink">Shared memory region</a>.
|
||
</li>
|
||
<li>Create the Berkeley DB environment on non-flash storage. It is possible to store database and log files in a different location to using the <a href="../api_reference/C/envset_data_dir.html" class="olink">DB_ENV->set_data_dir()</a> and <a href="../api_reference/C/envset_lg_dir.html" class="olink">DB_ENV->set_lg_dir()</a> APIs.</li>
|
||
</ol>
|
||
</div>
|
||
</li>
|
||
</ol>
|
||
</div>
|
||
</div>
|
||
<div class="navfooter">
|
||
<hr />
|
||
<table width="100%" summary="Navigation footer">
|
||
<tr>
|
||
<td width="40%" align="left"><a accesskey="p" href="build_wince_notes.html">Prev</a> </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="u" href="build_wince.html">Up</a>
|
||
</td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="build_unix.html">Next</a></td>
|
||
</tr>
|
||
<tr>
|
||
<td width="40%" align="left" valign="top">Windows Mobile notes </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="h" href="index.html">Home</a>
|
||
</td>
|
||
<td width="40%" align="right" valign="top"> Chapter 7.
|
||
Building Berkeley DB for UNIX/POSIX
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|