Adds asio library and Storage Module
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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>Buffer-oriented asynchronous read stream requirements</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="AsyncRandomAccessWriteDevice.html" title="Buffer-oriented asynchronous random-access write device requirements">
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<link rel="next" href="AsyncWriteStream.html" title="Buffer-oriented asynchronous write stream requirements">
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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="AsyncRandomAccessWriteDevice.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="AsyncWriteStream.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.AsyncReadStream"></a><a class="link" href="AsyncReadStream.html" title="Buffer-oriented asynchronous read stream requirements">Buffer-oriented asynchronous
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read stream requirements</a>
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</h3></div></div></div>
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<p>
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A type <code class="computeroutput">X</code> meets the <code class="computeroutput">AsyncReadStream</code> requirements
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if it satisfies the requirements listed below.
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</p>
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<p>
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In the table below, <code class="computeroutput">a</code> denotes a value of type <code class="computeroutput">X</code>,
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<code class="computeroutput">mb</code> denotes a (possibly const) value satisfying the <a class="link" href="MutableBufferSequence.html" title="Mutable buffer sequence requirements"><code class="computeroutput">MutableBufferSequence</code></a>
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requirements, and <code class="computeroutput">t</code> is a completion token.
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</p>
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<div class="table">
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<a name="asio.reference.AsyncReadStream.t0"></a><p class="title"><b>Table 4. AsyncReadStream requirements</b></p>
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<div class="table-contents"><table class="table" summary="AsyncReadStream requirements">
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<colgroup>
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<col>
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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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operation
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</p>
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</th>
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<th>
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<p>
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type
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</p>
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</th>
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<th>
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<p>
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semantics, pre/post-conditions
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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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<code class="computeroutput">a.get_executor()</code>
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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 type satisfying the <a class="link" href="Executor1.html" title="Executor requirements">Executor
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requirements</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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Returns the associated I/O 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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<code class="computeroutput">a.async_read_some(mb,t)</code>
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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 return type is determined according to the requirements for
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an <a class="link" href="asynchronous_operations.html" title="Requirements on asynchronous operations">asynchronous
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operation</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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Meets the requirements for a <a class="link" href="read_write_operations.html" title="Requirements on read and write operations">read
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operation</a> and an <a class="link" href="asynchronous_operations.html" title="Requirements on asynchronous operations">asynchronous
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operation</a> with completion signature <code class="computeroutput">void(error_code
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ec, size_t n)</code>.<br> <br> If <code class="computeroutput">buffer_size(mb) >
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0</code>, initiates an asynchronous operation to read one or more
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bytes of data from the stream <code class="computeroutput">a</code> into the buffer sequence
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<code class="computeroutput">mb</code>. If successful, <code class="computeroutput">ec</code> is set such that
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<code class="computeroutput">!ec</code> is <code class="computeroutput">true</code>, and <code class="computeroutput">n</code> is the
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number of bytes read. If an error occurred, <code class="computeroutput">ec</code> is
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set such that <code class="computeroutput">!!ec</code> is <code class="computeroutput">true</code>, and <code class="computeroutput">n</code>
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is 0. If all data has been read from the stream, and the stream
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performed an orderly shutdown, <code class="computeroutput">ec</code> is <code class="computeroutput">stream_errc::eof</code>
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and <code class="computeroutput">n</code> is 0.<br> <br> If <code class="computeroutput">buffer_size(mb)
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== 0</code>, the operation completes immediately. <code class="computeroutput">ec</code>
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is set such that <code class="computeroutput">!ec</code> is <code class="computeroutput">true</code>, and <code class="computeroutput">n</code>
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is 0.
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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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</div>
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<br class="table-break">
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M.
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Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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>)
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</p>
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</div></td>
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</tr></table>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="AsyncRandomAccessWriteDevice.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="AsyncWriteStream.html"><img src="../../next.png" alt="Next"></a>
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</div>
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</body>
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</html>
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