55 lines
2.3 KiB
HTML
55 lines
2.3 KiB
HTML
<!--$Id: set_func_pwrite.html 63573 2008-05-23 21:43:21Z trent.nelson $-->
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<!--Copyright (c) 1997,2008 Oracle. All rights reserved.-->
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<!--See the file LICENSE for redistribution information.-->
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<html>
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<head>
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<title>Berkeley DB: db_env_set_func_pwrite</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++">
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</head>
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<body bgcolor=white>
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<table width="100%"><tr valign=top>
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<td>
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<b>db_env_set_func_pwrite</b>
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</td>
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<td align=right>
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<a href="../api_c/api_core.html"><img src="../images/api.gif" alt="API"></a>
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<a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td>
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</tr></table>
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<hr size=1 noshade>
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<tt>
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<b><pre>
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#include <db.h>
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<p>
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int
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db_env_set_func_pwrite(ssize_t (*func_pwrite)(int fd, const void *buf, size_t nbytes, off_t offset));
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</pre></b>
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<hr size=1 noshade>
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<b>Description: db_env_set_func_pwrite</b>
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<p>Replace Berkeley DB calls to the IEEE/ANSI Std 1003.1 (POSIX) <b>pwrite</b> function with
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<b>func_pwrite</b>, which must conform to the standard interface
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specification.</p>
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<p>The db_env_set_func_pwrite method configures all operations performed by a process and
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all of its threads of control, not operations confined to a single
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database environment.</p>
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<p>Although the db_env_set_func_pwrite method may be called at any time during the life of
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the application, it should normally be called before making calls to the
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<a href="../api_c/env_class.html">db_env_create</a> or <a href="../api_c/db_class.html">db_create</a> methods.</p>
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<p>The db_env_set_func_pwrite method
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returns a non-zero error value on failure
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and 0 on success.
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</p>
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<b>Parameters</b> <br>
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<b>func_pwrite</b><ul compact><li>The <b>func_pwrite</b> parameter is the replacement function. It must conform
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to the standard interface specification.</ul>
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<br>
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<br><b>See Also</b>
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<a href="../ref/program/runtime.html">Run-time configuration</a>
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</tt>
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<table width="100%"><tr><td><br></td><td align=right>
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<a href="../api_c/api_core.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
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</td></tr></table>
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<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font>
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</body>
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</html>
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