1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Proto-allocator requirements</title> 5<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../boost_asio.html" title="Boost.Asio"> 8<link rel="up" href="../reference.html" title="Reference"> 9<link rel="prev" href="OperationState.html" title="Operation state concept"> 10<link rel="next" href="Protocol.html" title="Protocol requirements"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> 15<td align="center"><a href="../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="OperationState.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../boost_asio.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="Protocol.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h3 class="title"> 27<a name="boost_asio.reference.ProtoAllocator"></a><a class="link" href="ProtoAllocator.html" title="Proto-allocator requirements">Proto-allocator 28 requirements</a> 29</h3></div></div></div> 30<p> 31 A type <code class="computeroutput">A</code> meets the proto-allocator requirements if <code class="computeroutput">A</code> 32 is <code class="computeroutput">CopyConstructible</code> (C++Std [copyconstructible]), <code class="computeroutput">Destructible</code> 33 (C++Std [destructible]), and <code class="computeroutput">allocator_traits<A>::rebind_alloc<U></code> 34 meets the allocator requirements (C++Std [allocator.requirements]), where 35 <code class="computeroutput">U</code> is an object type. [<span class="emphasis"><em>Note:</em></span> For example, 36 <code class="computeroutput">std::allocator<void></code> meets the proto-allocator requirements 37 but not the allocator requirements. —<span class="emphasis"><em>end note</em></span>] No constructor, 38 comparison operator, copy operation, move operation, or swap operation on 39 these types shall exit via an exception. 40 </p> 41</div> 42<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 43<td align="left"></td> 44<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 45 Kohlhoff<p> 46 Distributed under the Boost Software License, Version 1.0. (See accompanying 47 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>) 48 </p> 49</div></td> 50</tr></table> 51<hr> 52<div class="spirit-nav"> 53<a accesskey="p" href="OperationState.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../boost_asio.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="Protocol.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 54</div> 55</body> 56</html> 57
