1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>spawn (2 of 7 overloads)</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="../spawn.html" title="spawn"> 9<link rel="prev" href="overload1.html" title="spawn (1 of 7 overloads)"> 10<link rel="next" href="overload3.html" title="spawn (3 of 7 overloads)"> 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="overload1.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../spawn.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="overload3.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="boost_asio.reference.spawn.overload2"></a><a class="link" href="overload2.html" title="spawn (2 of 7 overloads)">spawn (2 of 7 28 overloads)</a> 29</h4></div></div></div> 30<p> 31 Start a new stackful coroutine, calling the specified handler when it completes. 32 </p> 33<pre class="programlisting">template< 34 typename <a class="link" href="../Handler.html" title="Handlers">Handler</a>, 35 typename Function> 36void spawn( 37 Handler && handler, 38 Function && function, 39 const boost::coroutines::attributes & attributes = boost::coroutines::attributes(), 40 typename enable_if< !is_executor< typename decay< Handler >::type >::value &&!execution::is_executor< typename decay< Handler >::type >::value &&!is_convertible< Handler &, execution_context & >::value >::type * = 0); 41</pre> 42<p> 43 This function is used to launch a new coroutine. 44 </p> 45<h6> 46<a name="boost_asio.reference.spawn.overload2.h0"></a> 47 <span class="phrase"><a name="boost_asio.reference.spawn.overload2.parameters"></a></span><a class="link" href="overload2.html#boost_asio.reference.spawn.overload2.parameters">Parameters</a> 48 </h6> 49<div class="variablelist"> 50<p class="title"><b></b></p> 51<dl class="variablelist"> 52<dt><span class="term">handler</span></dt> 53<dd> 54<p> 55 A handler to be called when the coroutine exits. More importantly, 56 the handler provides an execution context (via the the handler invocation 57 hook) for the coroutine. The handler must have the signature: 58</p> 59<pre class="programlisting">void handler(); 60</pre> 61<p> 62 </p> 63</dd> 64<dt><span class="term">function</span></dt> 65<dd> 66<p> 67 The coroutine function. The function must have the signature: 68</p> 69<pre class="programlisting">void function(basic_yield_context<Handler> yield); 70</pre> 71<p> 72 </p> 73</dd> 74<dt><span class="term">attributes</span></dt> 75<dd><p> 76 Boost.Coroutine attributes used to customise the coroutine. 77 </p></dd> 78</dl> 79</div> 80</div> 81<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 82<td align="left"></td> 83<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 84 Kohlhoff<p> 85 Distributed under the Boost Software License, Version 1.0. (See accompanying 86 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>) 87 </p> 88</div></td> 89</tr></table> 90<hr> 91<div class="spirit-nav"> 92<a accesskey="p" href="overload1.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../spawn.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="overload3.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 93</div> 94</body> 95</html> 96
