1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>windows::random_access_handle</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="windows__overlapped_ptr/_overlapped_ptr.html" title="windows::overlapped_ptr::~overlapped_ptr"> 10<link rel="next" href="windows__stream_handle.html" title="windows::stream_handle"> 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="windows__random_access_handle.html" title="windows::random_access_handle">windows::random_access_handle</a> 28</h3></div></div></div> 29<p> 30 <a class="indexterm" name="boost_asio.indexterm.windows__random_access_handle"></a> 31Typedef 32 for the typical usage of a random-access handle. 33 </p> 34<pre class="programlisting">typedef basic_random_access_handle random_access_handle; 35</pre> 36<h5> 37<a name="boost_asio.reference.windows__random_access_handle.h0"></a> 38 <span class="phrase"><a name="boost_asio.reference.windows__random_access_handle.types"></a></span><a class="link" href="windows__random_access_handle.html#boost_asio.reference.windows__random_access_handle.types">Types</a> 39 </h5> 40<div class="informaltable"><table class="table"> 41<colgroup> 42<col> 43<col> 44</colgroup> 45<thead><tr> 46<th> 47 <p> 48 Name 49 </p> 50 </th> 51<th> 52 <p> 53 Description 54 </p> 55 </th> 56</tr></thead> 57<tbody> 58<tr> 59<td> 60 <p> 61 <a class="link" href="windows__basic_random_access_handle__rebind_executor.html" title="windows::basic_random_access_handle::rebind_executor"><span class="bold"><strong>rebind_executor</strong></span></a> 62 </p> 63 </td> 64<td> 65 <p> 66 Rebinds the handle type to another executor. 67 </p> 68 </td> 69</tr> 70<tr> 71<td> 72 <p> 73 <a class="link" href="windows__basic_random_access_handle/executor_type.html" title="windows::basic_random_access_handle::executor_type"><span class="bold"><strong>executor_type</strong></span></a> 74 </p> 75 </td> 76<td> 77 <p> 78 The type of the executor associated with the object. 79 </p> 80 </td> 81</tr> 82<tr> 83<td> 84 <p> 85 <a class="link" href="windows__basic_random_access_handle/lowest_layer_type.html" title="windows::basic_random_access_handle::lowest_layer_type"><span class="bold"><strong>lowest_layer_type</strong></span></a> 86 </p> 87 </td> 88<td> 89 <p> 90 An overlapped_handle is always the lowest layer. 91 </p> 92 </td> 93</tr> 94<tr> 95<td> 96 <p> 97 <a class="link" href="windows__basic_random_access_handle/native_handle_type.html" title="windows::basic_random_access_handle::native_handle_type"><span class="bold"><strong>native_handle_type</strong></span></a> 98 </p> 99 </td> 100<td> 101 <p> 102 The native representation of a handle. 103 </p> 104 </td> 105</tr> 106</tbody> 107</table></div> 108<h5> 109<a name="boost_asio.reference.windows__random_access_handle.h1"></a> 110 <span class="phrase"><a name="boost_asio.reference.windows__random_access_handle.member_functions"></a></span><a class="link" href="windows__random_access_handle.html#boost_asio.reference.windows__random_access_handle.member_functions">Member 111 Functions</a> 112 </h5> 113<div class="informaltable"><table class="table"> 114<colgroup> 115<col> 116<col> 117</colgroup> 118<thead><tr> 119<th> 120 <p> 121 Name 122 </p> 123 </th> 124<th> 125 <p> 126 Description 127 </p> 128 </th> 129</tr></thead> 130<tbody> 131<tr> 132<td> 133 <p> 134 <a class="link" href="windows__basic_random_access_handle/assign.html" title="windows::basic_random_access_handle::assign"><span class="bold"><strong>assign</strong></span></a> 135 </p> 136 </td> 137<td> 138 <p> 139 Assign an existing native handle to the handle. 140 </p> 141 </td> 142</tr> 143<tr> 144<td> 145 <p> 146 <a class="link" href="windows__basic_random_access_handle/async_read_some_at.html" title="windows::basic_random_access_handle::async_read_some_at"><span class="bold"><strong>async_read_some_at</strong></span></a> 147 </p> 148 </td> 149<td> 150 <p> 151 Start an asynchronous read at the specified offset. 152 </p> 153 </td> 154</tr> 155<tr> 156<td> 157 <p> 158 <a class="link" href="windows__basic_random_access_handle/async_write_some_at.html" title="windows::basic_random_access_handle::async_write_some_at"><span class="bold"><strong>async_write_some_at</strong></span></a> 159 </p> 160 </td> 161<td> 162 <p> 163 Start an asynchronous write at the specified offset. 164 </p> 165 </td> 166</tr> 167<tr> 168<td> 169 <p> 170 <a class="link" href="windows__basic_random_access_handle/basic_random_access_handle.html" title="windows::basic_random_access_handle::basic_random_access_handle"><span class="bold"><strong>basic_random_access_handle</strong></span></a> <span class="silver">[constructor]</span> 171 </p> 172 </td> 173<td> 174 <p> 175 Construct a random-access handle without opening it. <br> <span class="silver"> —</span><br> 176 Construct a random-access handle on an existing native handle. 177 <br> <span class="silver"> —</span><br> Move-construct a random-access handle from another. 178 </p> 179 </td> 180</tr> 181<tr> 182<td> 183 <p> 184 <a class="link" href="windows__basic_random_access_handle/cancel.html" title="windows::basic_random_access_handle::cancel"><span class="bold"><strong>cancel</strong></span></a> 185 </p> 186 </td> 187<td> 188 <p> 189 Cancel all asynchronous operations associated with the handle. 190 </p> 191 </td> 192</tr> 193<tr> 194<td> 195 <p> 196 <a class="link" href="windows__basic_random_access_handle/close.html" title="windows::basic_random_access_handle::close"><span class="bold"><strong>close</strong></span></a> 197 </p> 198 </td> 199<td> 200 <p> 201 Close the handle. 202 </p> 203 </td> 204</tr> 205<tr> 206<td> 207 <p> 208 <a class="link" href="windows__basic_random_access_handle/get_executor.html" title="windows::basic_random_access_handle::get_executor"><span class="bold"><strong>get_executor</strong></span></a> 209 </p> 210 </td> 211<td> 212 <p> 213 Get the executor associated with the object. 214 </p> 215 </td> 216</tr> 217<tr> 218<td> 219 <p> 220 <a class="link" href="windows__basic_random_access_handle/is_open.html" title="windows::basic_random_access_handle::is_open"><span class="bold"><strong>is_open</strong></span></a> 221 </p> 222 </td> 223<td> 224 <p> 225 Determine whether the handle is open. 226 </p> 227 </td> 228</tr> 229<tr> 230<td> 231 <p> 232 <a class="link" href="windows__basic_random_access_handle/lowest_layer.html" title="windows::basic_random_access_handle::lowest_layer"><span class="bold"><strong>lowest_layer</strong></span></a> 233 </p> 234 </td> 235<td> 236 <p> 237 Get a reference to the lowest layer. <br> <span class="silver"> —</span><br> Get a const 238 reference to the lowest layer. 239 </p> 240 </td> 241</tr> 242<tr> 243<td> 244 <p> 245 <a class="link" href="windows__basic_random_access_handle/native_handle.html" title="windows::basic_random_access_handle::native_handle"><span class="bold"><strong>native_handle</strong></span></a> 246 </p> 247 </td> 248<td> 249 <p> 250 Get the native handle representation. 251 </p> 252 </td> 253</tr> 254<tr> 255<td> 256 <p> 257 <a class="link" href="windows__basic_random_access_handle/operator_eq_.html" title="windows::basic_random_access_handle::operator="><span class="bold"><strong>operator=</strong></span></a> 258 </p> 259 </td> 260<td> 261 <p> 262 Move-assign a random-access handle from another. 263 </p> 264 </td> 265</tr> 266<tr> 267<td> 268 <p> 269 <a class="link" href="windows__basic_random_access_handle/read_some_at.html" title="windows::basic_random_access_handle::read_some_at"><span class="bold"><strong>read_some_at</strong></span></a> 270 </p> 271 </td> 272<td> 273 <p> 274 Read some data from the handle at the specified offset. 275 </p> 276 </td> 277</tr> 278<tr> 279<td> 280 <p> 281 <a class="link" href="windows__basic_random_access_handle/write_some_at.html" title="windows::basic_random_access_handle::write_some_at"><span class="bold"><strong>write_some_at</strong></span></a> 282 </p> 283 </td> 284<td> 285 <p> 286 Write some data to the handle at the specified offset. 287 </p> 288 </td> 289</tr> 290</tbody> 291</table></div> 292<p> 293 The <a class="link" href="windows__basic_random_access_handle.html" title="windows::basic_random_access_handle"><code class="computeroutput">windows::basic_random_access_handle</code></a> 294 class provides asynchronous and blocking random-access handle functionality. 295 </p> 296<h5> 297<a name="boost_asio.reference.windows__random_access_handle.h2"></a> 298 <span class="phrase"><a name="boost_asio.reference.windows__random_access_handle.thread_safety"></a></span><a class="link" href="windows__random_access_handle.html#boost_asio.reference.windows__random_access_handle.thread_safety">Thread 299 Safety</a> 300 </h5> 301<p> 302 <span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></span> Safe. 303 </p> 304<p> 305 <span class="emphasis"><em>Shared</em></span> <span class="emphasis"><em>objects:</em></span> Unsafe. 306 </p> 307<h5> 308<a name="boost_asio.reference.windows__random_access_handle.h3"></a> 309 <span class="phrase"><a name="boost_asio.reference.windows__random_access_handle.requirements"></a></span><a class="link" href="windows__random_access_handle.html#boost_asio.reference.windows__random_access_handle.requirements">Requirements</a> 310 </h5> 311<p> 312 <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/windows/random_access_handle.hpp</code> 313 </p> 314<p> 315 <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code> 316 </p> 317</div> 318<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 319<td align="left"></td> 320<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 321 Kohlhoff<p> 322 Distributed under the Boost Software License, Version 1.0. (See accompanying 323 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>) 324 </p> 325</div></td> 326</tr></table> 327<hr> 328<div class="spirit-nav"> 329<a accesskey="p" href="windows__overlapped_ptr/_overlapped_ptr.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="windows__stream_handle.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 330</div> 331</body> 332</html> 333
