2011-09-13 17:44:24 +00:00
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<title>Run-time configuration</title>
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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 Programmer's Reference Guide" />
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<link rel="up" href="program.html" title="Chapter 15. Programmer Notes" />
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<link rel="prev" href="program_compatible.html" title="Compatibility with historic UNIX interfaces" />
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<link rel="next" href="program_perfmon.html" title="Performance Event Monitoring" />
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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2012-11-14 21:35:20 +00:00
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<p>Library Version 11.2.5.3</p>
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2011-09-13 17:44:24 +00:00
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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">Run-time configuration</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="program_compatible.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 15.
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Programmer Notes
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="program_perfmon.html">Next</a></td>
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</tr>
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</table>
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<hr />
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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="program_runtime"></a>Run-time configuration</h2>
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</div>
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</div>
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</div>
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<p>It is possible for applications to configure Berkeley DB at run-time to
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redirect Berkeley DB library and system calls to alternate interfaces. For
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example, an application might want Berkeley DB to call debugging memory
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allocation routines rather than the standard C library interfaces. The
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following interfaces support this functionality:</p>
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<div class="itemizedlist">
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<ul type="disc">
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_close.html" class="olink">db_env_set_func_close</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_dirfree.html" class="olink">db_env_set_func_dirfree</a>
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</p>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_dirlist.html" class="olink">db_env_set_func_dirlist</a>
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</p>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_exists.html" class="olink">db_env_set_func_exists</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_file_map.html" class="olink">db_env_set_func_file_map</a>
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</p>
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</li>
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<p>
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<a href="../api_reference/C/db_env_set_func_free.html" class="olink">db_env_set_func_free</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_fsync.html" class="olink">db_env_set_func_fsync</a>
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</p>
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<p>
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<a href="../api_reference/C/db_env_set_func_ftruncate.html" class="olink">db_env_set_func_ftruncate</a>
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</p>
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<p>
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<a href="../api_reference/C/db_env_set_func_ioinfo.html" class="olink">db_env_set_func_ioinfo</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_malloc.html" class="olink">db_env_set_func_malloc</a>
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</p>
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<p>
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<a href="../api_reference/C/db_env_set_func_open.html" class="olink">db_env_set_func_open</a>
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</p>
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</li>
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<p>
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<a href="../api_reference/C/db_env_set_func_pread.html" class="olink">db_env_set_func_pread</a>
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</p>
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</li>
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<p>
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<a href="../api_reference/C/db_env_set_func_pwrite.html" class="olink">db_env_set_func_pwrite</a>
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</p>
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<p>
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<a href="../api_reference/C/db_env_set_func_read.html" class="olink">db_env_set_func_read</a>
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</p>
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<p>
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<a href="../api_reference/C/db_env_set_func_realloc.html" class="olink">db_env_set_func_realloc</a>
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</p>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_region_map.html" class="olink">db_env_set_func_region_map</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_rename.html" class="olink">db_env_set_func_rename</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_seek.html" class="olink">db_env_set_func_seek</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_unlink.html" class="olink">db_env_set_func_unlink</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_write.html" class="olink">db_env_set_func_write</a>
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</p>
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</li>
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<li>
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<p>
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<a href="../api_reference/C/db_env_set_func_yield.html" class="olink">db_env_set_func_yield</a>
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</p>
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</li>
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</ul>
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</div>
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<p>These interfaces are available only on POSIX platforms and from the
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Berkeley DB C language API.</p>
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<p>A not-uncommon problem for applications is the new API in Solaris 2.6
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for manipulating large files. Because this API was not part of Solaris
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2.5, it is difficult to create a single binary that takes advantage of
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the large file functionality in Solaris 2.6, but still runs on Solaris
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2.5. <a class="ulink" href="solaris.txt" target="_top">Example code</a> that supports this is
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included in the Berkeley DB distribution, however, the example code was
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written using previous versions of the Berkeley DB APIs, and is only useful
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as an example.</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="program_compatible.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="program.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="program_perfmon.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">Compatibility with historic UNIX interfaces </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"> Performance Event Monitoring</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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