517 lines
17 KiB
HTML
517 lines
17 KiB
HTML
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>basic_file</title>
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<link rel="stylesheet" href="../../boostbook.css" type="text/css">
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
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<link rel="home" href="../../index.html" title="Asio">
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<link rel="up" href="../reference.html" title="Reference">
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<link rel="prev" href="basic_deadline_timer__rebind_executor/other.html" title="basic_deadline_timer::rebind_executor::other">
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<link rel="next" href="basic_file/append.html" title="basic_file::append">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="asio C++ library" width="250" height="60" src="../../asio.png"></td></tr></table>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="basic_deadline_timer__rebind_executor/other.html"><img src="../../prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../home.png" alt="Home"></a><a accesskey="n" href="basic_file/append.html"><img src="../../next.png" alt="Next"></a>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="asio.reference.basic_file"></a><a class="link" href="basic_file.html" title="basic_file">basic_file</a>
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</h3></div></div></div>
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<p>
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<a class="indexterm" name="asio.indexterm.basic_file"></a>
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</p>
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<p>
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Provides file functionality.
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</p>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <a class="link" href="Executor1.html" title="Executor requirements">Executor</a><span class="special">></span>
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<span class="keyword">class</span> <span class="identifier">basic_file</span> <span class="special">:</span>
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<span class="keyword">public</span> <span class="identifier">file_base</span>
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</pre>
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<h5>
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<a name="asio.reference.basic_file.h0"></a>
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<span><a name="asio.reference.basic_file.types"></a></span><a class="link" href="basic_file.html#asio.reference.basic_file.types">Types</a>
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</h5>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Name
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file__rebind_executor.html" title="basic_file::rebind_executor"><span class="bold"><strong>rebind_executor</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Rebinds the file type to another executor.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/executor_type.html" title="basic_file::executor_type"><span class="bold"><strong>executor_type</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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The type of the executor associated with the object.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/flags.html" title="basic_file::flags"><span class="bold"><strong>flags</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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A bitmask type (C++ Std [lib.bitmask.types]).
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/native_handle_type.html" title="basic_file::native_handle_type"><span class="bold"><strong>native_handle_type</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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The native representation of a file.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/seek_basis.html" title="basic_file::seek_basis"><span class="bold"><strong>seek_basis</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Basis for seeking in a file.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<h5>
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<a name="asio.reference.basic_file.h1"></a>
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<span><a name="asio.reference.basic_file.member_functions"></a></span><a class="link" href="basic_file.html#asio.reference.basic_file.member_functions">Member
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Functions</a>
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</h5>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Name
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/assign.html" title="basic_file::assign"><span class="bold"><strong>assign</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Assign an existing native file to the file.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/basic_file.html" title="basic_file::basic_file"><span class="bold"><strong>basic_file</strong></span></a> <span class="silver">[constructor]</span>
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</p>
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</td>
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<td>
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<p>
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Construct a basic_file without opening it. <br> <span class="silver"> —</span><br> Construct
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and open a basic_file. <br> <span class="silver"> —</span><br> Construct a basic_file on
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an existing native file handle. <br> <span class="silver"> —</span><br> Construct a basic_file
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on an existing native file. <br> <span class="silver"> —</span><br> Move-construct a basic_file
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from another. <br> <span class="silver"> —</span><br> Move-construct a basic_file from a
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file of another executor type.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/cancel.html" title="basic_file::cancel"><span class="bold"><strong>cancel</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Cancel all asynchronous operations associated with the file.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/close.html" title="basic_file::close"><span class="bold"><strong>close</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Close the file.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/get_executor.html" title="basic_file::get_executor"><span class="bold"><strong>get_executor</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Get the executor associated with the object.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/is_open.html" title="basic_file::is_open"><span class="bold"><strong>is_open</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Determine whether the file is open.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/native_handle.html" title="basic_file::native_handle"><span class="bold"><strong>native_handle</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Get the native file representation.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/open.html" title="basic_file::open"><span class="bold"><strong>open</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Open the file using the specified path.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/operator_eq_.html" title="basic_file::operator="><span class="bold"><strong>operator=</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Move-assign a basic_file from another. <br> <span class="silver"> —</span><br> Move-assign
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a basic_file from a file of another executor type.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/release.html" title="basic_file::release"><span class="bold"><strong>release</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Release ownership of the underlying native file.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/resize.html" title="basic_file::resize"><span class="bold"><strong>resize</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Alter the size of the file.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/size.html" title="basic_file::size"><span class="bold"><strong>size</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Get the size of the file.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/sync_all.html" title="basic_file::sync_all"><span class="bold"><strong>sync_all</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Synchronise the file to disk.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a class="link" href="basic_file/sync_data.html" title="basic_file::sync_data"><span class="bold"><strong>sync_data</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Synchronise the file data to disk.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<h5>
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<a name="asio.reference.basic_file.h2"></a>
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<span><a name="asio.reference.basic_file.protected_member_functions"></a></span><a class="link" href="basic_file.html#asio.reference.basic_file.protected_member_functions">Protected
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Member Functions</a>
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</h5>
|
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Name
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</th>
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</tr></thead>
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<tbody><tr>
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<td>
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<p>
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<a class="link" href="basic_file/_basic_file.html" title="basic_file::~basic_file"><span class="bold"><strong>~basic_file</strong></span></a> <span class="silver">[destructor]</span>
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</p>
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</td>
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<td>
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<p>
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Protected destructor to prevent deletion through this type.
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</p>
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</td>
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</tr></tbody>
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</table></div>
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<h5>
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||
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<a name="asio.reference.basic_file.h3"></a>
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||
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<span><a name="asio.reference.basic_file.data_members"></a></span><a class="link" href="basic_file.html#asio.reference.basic_file.data_members">Data
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Members</a>
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</h5>
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||
|
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<div class="informaltable"><table class="table">
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||
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<colgroup>
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<col>
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<col>
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||
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</colgroup>
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||
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<thead><tr>
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||
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<th>
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||
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<p>
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||
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Name
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</p>
|
||
|
|
</th>
|
||
|
|
<th>
|
||
|
|
<p>
|
||
|
|
Description
|
||
|
|
</p>
|
||
|
|
</th>
|
||
|
|
</tr></thead>
|
||
|
|
<tbody>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/append.html" title="basic_file::append"><span class="bold"><strong>append</strong></span></a>
|
||
|
|
<span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Open the file in append mode.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/create.html" title="basic_file::create"><span class="bold"><strong>create</strong></span></a>
|
||
|
|
<span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Create the file if it does not exist.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/exclusive.html" title="basic_file::exclusive"><span class="bold"><strong>exclusive</strong></span></a>
|
||
|
|
<span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Ensure a new file is created. Must be combined with create.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/read_only.html" title="basic_file::read_only"><span class="bold"><strong>read_only</strong></span></a>
|
||
|
|
<span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Open the file for reading.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/read_write.html" title="basic_file::read_write"><span class="bold"><strong>read_write</strong></span></a> <span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Open the file for reading and writing.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/sync_all_on_write.html" title="basic_file::sync_all_on_write"><span class="bold"><strong>sync_all_on_write</strong></span></a> <span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Open the file so that write operations automatically synchronise
|
||
|
|
the file data and metadata to disk.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/truncate.html" title="basic_file::truncate"><span class="bold"><strong>truncate</strong></span></a>
|
||
|
|
<span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Open the file with any existing contents truncated.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="basic_file/write_only.html" title="basic_file::write_only"><span class="bold"><strong>write_only</strong></span></a> <span class="silver">[static]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Open the file for writing.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</tbody>
|
||
|
|
</table></div>
|
||
|
|
<p>
|
||
|
|
The <a class="link" href="basic_file.html" title="basic_file"><code class="computeroutput"><span class="identifier">basic_file</span></code></a>
|
||
|
|
class template provides functionality that is common to both stream-oriented
|
||
|
|
and random-access files.
|
||
|
|
</p>
|
||
|
|
<h5>
|
||
|
|
<a name="asio.reference.basic_file.h4"></a>
|
||
|
|
<span><a name="asio.reference.basic_file.thread_safety"></a></span><a class="link" href="basic_file.html#asio.reference.basic_file.thread_safety">Thread
|
||
|
|
Safety</a>
|
||
|
|
</h5>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></span> Safe.
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Shared</em></span> <span class="emphasis"><em>objects:</em></span> Unsafe.
|
||
|
|
</p>
|
||
|
|
<h5>
|
||
|
|
<a name="asio.reference.basic_file.h5"></a>
|
||
|
|
<span><a name="asio.reference.basic_file.requirements"></a></span><a class="link" href="basic_file.html#asio.reference.basic_file.requirements">Requirements</a>
|
||
|
|
</h5>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Header: </em></span><code class="literal">asio/basic_file.hpp</code>
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
<div class="copyright-footer">Copyright © 2003-2023 Christopher M. Kohlhoff<p>
|
||
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||
|
|
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
<hr>
|
||
|
|
<div class="spirit-nav">
|
||
|
|
<a accesskey="p" href="basic_deadline_timer__rebind_executor/other.html"><img src="../../prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../home.png" alt="Home"></a><a accesskey="n" href="basic_file/append.html"><img src="../../next.png" alt="Next"></a>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|