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>db_env_set_func_write</title> 7 <link rel="stylesheet" href="apiReference.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 C API Reference" /> 10 <link rel="up" href="setfunc.html" title="Appendix��3.�� Berkeley DB Application Space Static Functions" /> 11 <link rel="prev" href="db_env_set_func_unlink.html" title="db_env_set_func_unlink" /> 12 <link rel="next" href="db_env_set_func_yield.html" title="db_env_set_func_yield" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">db_env_set_func_write</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="db_env_set_func_unlink.html">Prev</a>��</td> 22 <th width="60%" align="center">Appendix��3.�� 23 Berkeley DB Application Space Static Functions 24 </th> 25 <td width="20%" align="right">��<a accesskey="n" href="db_env_set_func_yield.html">Next</a></td> 26 </tr> 27 </table> 28 <hr /> 29 </div> 30 <div class="sect1" lang="en" xml:lang="en"> 31 <div class="titlepage"> 32 <div> 33 <div> 34 <h2 class="title" style="clear: both"><a id="db_env_set_func_write"></a>db_env_set_func_write</h2> 35 </div> 36 </div> 37 </div> 38 <pre class="programlisting">#include <db.h> 39 40int 41db_env_set_func_write(ssize_t (*func_write)(int fd, const void *buffer, 42 size_t nbytes)); </pre> 43 <p> 44 Replace Berkeley DB calls to the IEEE/ANSI Std 1003.1 (POSIX) 45 <span class="bold"><strong>write</strong></span> function with <span class="bold"><strong>func_write</strong></span>, which must conform to the standard 46 interface specification. 47 </p> 48 <p> 49 The <code class="function">db_env_set_func_write()</code> function configures all operations performed 50 by a process and all of its threads of control, not operations 51 confined to a single database environment. 52 </p> 53 <p> 54 Although the <code class="function">db_env_set_func_write()</code> function may be called at any time 55 during the life of the application, it should normally be called 56 before making calls to the <a class="xref" href="envcreate.html" title="db_env_create">db_env_create</a> or 57 <a class="xref" href="dbcreate.html" title="db_create">db_create</a> methods. 58 </p> 59 <p> 60 The <code class="function">db_env_set_func_write()</code> <span> 61 function returns a non-zero error value on failure and 0 on success. 62 </span> 63 </p> 64 <div class="sect2" lang="en" xml:lang="en"> 65 <div class="titlepage"> 66 <div> 67 <div> 68 <h3 class="title"><a id="id1721238"></a>Parameters</h3> 69 </div> 70 </div> 71 </div> 72 <div class="sect3" lang="en" xml:lang="en"> 73 <div class="titlepage"> 74 <div> 75 <div> 76 <h4 class="title"><a id="id1721461"></a>func_write</h4> 77 </div> 78 </div> 79 </div> 80 <p> 81 The <span class="bold"><strong>func_write</strong></span> parameter is the 82 replacement function. It must conform to the standard interface 83 specification. 84 </p> 85 </div> 86 </div> 87 <div class="sect2" lang="en" xml:lang="en"> 88 <div class="titlepage"> 89 <div> 90 <div> 91 <h3 class="title"><a id="id1721606"></a>See Also</h3> 92 </div> 93 </div> 94 </div> 95 <p> 96 <a href="../../programmer_reference/program_runtime.html" class="olink">Run-time configuration</a> 97 </p> 98 </div> 99 </div> 100 <div class="navfooter"> 101 <hr /> 102 <table width="100%" summary="Navigation footer"> 103 <tr> 104 <td width="40%" align="left"><a accesskey="p" href="db_env_set_func_unlink.html">Prev</a>��</td> 105 <td width="20%" align="center"> 106 <a accesskey="u" href="setfunc.html">Up</a> 107 </td> 108 <td width="40%" align="right">��<a accesskey="n" href="db_env_set_func_yield.html">Next</a></td> 109 </tr> 110 <tr> 111 <td width="40%" align="left" valign="top">db_env_set_func_unlink��</td> 112 <td width="20%" align="center"> 113 <a accesskey="h" href="index.html">Home</a> 114 </td> 115 <td width="40%" align="right" valign="top">��db_env_set_func_yield</td> 116 </tr> 117 </table> 118 </div> 119 </body> 120</html> 121