1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>execution::blocking_t</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="execution__blocking_adaptation_t__disallowed_t/value.html" title="execution::blocking_adaptation_t::disallowed_t::value"> 10<link rel="next" href="execution__blocking_t/always.html" title="execution::blocking_t::always"> 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 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href="execution__blocking_t.html" title="execution::blocking_t">execution::blocking_t</a> 28</h3></div></div></div> 29<p> 30 A property to describe what guarantees an executor makes about the blocking 31 behaviour of their execution functions. 32 </p> 33<pre class="programlisting">struct blocking_t 34</pre> 35<h5> 36<a name="boost_asio.reference.execution__blocking_t.h0"></a> 37 <span class="phrase"><a name="boost_asio.reference.execution__blocking_t.types"></a></span><a class="link" href="execution__blocking_t.html#boost_asio.reference.execution__blocking_t.types">Types</a> 38 </h5> 39<div class="informaltable"><table class="table"> 40<colgroup> 41<col> 42<col> 43</colgroup> 44<thead><tr> 45<th> 46 <p> 47 Name 48 </p> 49 </th> 50<th> 51 <p> 52 Description 53 </p> 54 </th> 55</tr></thead> 56<tbody> 57<tr> 58<td> 59 <p> 60 <a class="link" href="execution__blocking_t__always_t.html" title="execution::blocking_t::always_t"><span class="bold"><strong>always_t</strong></span></a> 61 </p> 62 </td> 63<td> 64 <p> 65 A sub-property that indicates that invocation of an executor's 66 execution function shall block until completion of all invocations 67 of the submitted function object. 68 </p> 69 </td> 70</tr> 71<tr> 72<td> 73 <p> 74 <a class="link" href="execution__blocking_t__never_t.html" title="execution::blocking_t::never_t"><span class="bold"><strong>never_t</strong></span></a> 75 </p> 76 </td> 77<td> 78 <p> 79 A sub-property that indicates that invocation of an executor's 80 execution function shall not block pending completion of the invocations 81 of the submitted function object. 82 </p> 83 </td> 84</tr> 85<tr> 86<td> 87 <p> 88 <a class="link" href="execution__blocking_t__possibly_t.html" title="execution::blocking_t::possibly_t"><span class="bold"><strong>possibly_t</strong></span></a> 89 </p> 90 </td> 91<td> 92 <p> 93 A sub-property that indicates that invocation of an executor's 94 execution function may block pending completion of one or more 95 invocations of the submitted function object. 96 </p> 97 </td> 98</tr> 99<tr> 100<td> 101 <p> 102 <a class="link" href="execution__blocking_t/polymorphic_query_result_type.html" title="execution::blocking_t::polymorphic_query_result_type"><span class="bold"><strong>polymorphic_query_result_type</strong></span></a> 103 </p> 104 </td> 105<td> 106 <p> 107 The type returned by queries against an any_executor. 108 </p> 109 </td> 110</tr> 111</tbody> 112</table></div> 113<h5> 114<a name="boost_asio.reference.execution__blocking_t.h1"></a> 115 <span class="phrase"><a name="boost_asio.reference.execution__blocking_t.member_functions"></a></span><a class="link" href="execution__blocking_t.html#boost_asio.reference.execution__blocking_t.member_functions">Member 116 Functions</a> 117 </h5> 118<div class="informaltable"><table class="table"> 119<colgroup> 120<col> 121<col> 122</colgroup> 123<thead><tr> 124<th> 125 <p> 126 Name 127 </p> 128 </th> 129<th> 130 <p> 131 Description 132 </p> 133 </th> 134</tr></thead> 135<tbody><tr> 136<td> 137 <p> 138 <a class="link" href="execution__blocking_t/blocking_t.html" title="execution::blocking_t::blocking_t"><span class="bold"><strong>blocking_t</strong></span></a> <span class="silver">[constructor]</span> 139 </p> 140 </td> 141<td> 142 <p> 143 Default constructor. <br> <span class="silver"> —</span><br> Construct from a sub-property 144 value. 145 </p> 146 </td> 147</tr></tbody> 148</table></div> 149<h5> 150<a name="boost_asio.reference.execution__blocking_t.h2"></a> 151 <span class="phrase"><a name="boost_asio.reference.execution__blocking_t.data_members"></a></span><a class="link" href="execution__blocking_t.html#boost_asio.reference.execution__blocking_t.data_members">Data Members</a> 152 </h5> 153<div class="informaltable"><table class="table"> 154<colgroup> 155<col> 156<col> 157</colgroup> 158<thead><tr> 159<th> 160 <p> 161 Name 162 </p> 163 </th> 164<th> 165 <p> 166 Description 167 </p> 168 </th> 169</tr></thead> 170<tbody> 171<tr> 172<td> 173 <p> 174 <a class="link" href="execution__blocking_t/always.html" title="execution::blocking_t::always"><span class="bold"><strong>always</strong></span></a> <span class="silver">[static]</span> 175 </p> 176 </td> 177<td> 178 <p> 179 A special value used for accessing the blocking_t::always_t property. 180 </p> 181 </td> 182</tr> 183<tr> 184<td> 185 <p> 186 <a class="link" href="execution__blocking_t/is_applicable_property_v.html" title="execution::blocking_t::is_applicable_property_v"><span class="bold"><strong>is_applicable_property_v</strong></span></a> <span class="silver">[static]</span> 187 </p> 188 </td> 189<td> 190 <p> 191 The blocking_t property applies to executors, senders, and schedulers. 192 </p> 193 </td> 194</tr> 195<tr> 196<td> 197 <p> 198 <a class="link" href="execution__blocking_t/is_preferable.html" title="execution::blocking_t::is_preferable"><span class="bold"><strong>is_preferable</strong></span></a> <span class="silver">[static]</span> 199 </p> 200 </td> 201<td> 202 <p> 203 The top-level blocking_t property cannot be preferred. 204 </p> 205 </td> 206</tr> 207<tr> 208<td> 209 <p> 210 <a class="link" href="execution__blocking_t/is_requirable.html" title="execution::blocking_t::is_requirable"><span class="bold"><strong>is_requirable</strong></span></a> <span class="silver">[static]</span> 211 </p> 212 </td> 213<td> 214 <p> 215 The top-level blocking_t property cannot be required. 216 </p> 217 </td> 218</tr> 219<tr> 220<td> 221 <p> 222 <a class="link" href="execution__blocking_t/never.html" title="execution::blocking_t::never"><span class="bold"><strong>never</strong></span></a> <span class="silver">[static]</span> 223 </p> 224 </td> 225<td> 226 <p> 227 A special value used for accessing the blocking_t::never_t property. 228 </p> 229 </td> 230</tr> 231<tr> 232<td> 233 <p> 234 <a class="link" href="execution__blocking_t/possibly.html" title="execution::blocking_t::possibly"><span class="bold"><strong>possibly</strong></span></a> <span class="silver">[static]</span> 235 </p> 236 </td> 237<td> 238 <p> 239 A special value used for accessing the blocking_t::possibly_t property. 240 </p> 241 </td> 242</tr> 243</tbody> 244</table></div> 245<h5> 246<a name="boost_asio.reference.execution__blocking_t.h3"></a> 247 <span class="phrase"><a name="boost_asio.reference.execution__blocking_t.friends"></a></span><a class="link" href="execution__blocking_t.html#boost_asio.reference.execution__blocking_t.friends">Friends</a> 248 </h5> 249<div class="informaltable"><table class="table"> 250<colgroup> 251<col> 252<col> 253</colgroup> 254<thead><tr> 255<th> 256 <p> 257 Name 258 </p> 259 </th> 260<th> 261 <p> 262 Description 263 </p> 264 </th> 265</tr></thead> 266<tbody> 267<tr> 268<td> 269 <p> 270 <a class="link" href="execution__blocking_t/operator_not__eq_.html" title="execution::blocking_t::operator!="><span class="bold"><strong>operator!=</strong></span></a> 271 </p> 272 </td> 273<td> 274 <p> 275 Compare property values for inequality. 276 </p> 277 </td> 278</tr> 279<tr> 280<td> 281 <p> 282 <a class="link" href="execution__blocking_t/operator_eq__eq_.html" title="execution::blocking_t::operator=="><span class="bold"><strong>operator==</strong></span></a> 283 </p> 284 </td> 285<td> 286 <p> 287 Compare property values for equality. 288 </p> 289 </td> 290</tr> 291</tbody> 292</table></div> 293<h5> 294<a name="boost_asio.reference.execution__blocking_t.h4"></a> 295 <span class="phrase"><a name="boost_asio.reference.execution__blocking_t.requirements"></a></span><a class="link" href="execution__blocking_t.html#boost_asio.reference.execution__blocking_t.requirements">Requirements</a> 296 </h5> 297<p> 298 <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/execution/blocking.hpp</code> 299 </p> 300<p> 301 <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio/execution.hpp</code> 302 </p> 303</div> 304<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 305<td align="left"></td> 306<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 307 Kohlhoff<p> 308 Distributed under the Boost Software License, Version 1.0. (See accompanying 309 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>) 310 </p> 311</div></td> 312</tr></table> 313<hr> 314<div class="spirit-nav"> 315<a accesskey="p" href="execution__blocking_adaptation_t__disallowed_t/value.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="execution__blocking_t/always.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 316</div> 317</body> 318</html> 319
