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415 lines
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<title>posix::descriptor</title>
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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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<a accesskey="p" href="posix__basic_stream_descriptor__rebind_executor/other.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="posix__descriptor_base.html"><img src="../../next.png" alt="Next"></a>
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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.posix__descriptor"></a><a class="link" href="posix__descriptor.html" title="posix::descriptor">posix::descriptor</a>
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</h3></div></div></div>
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<p>
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<a class="indexterm" name="asio.indexterm.posix__descriptor"></a>
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</p>
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<p>
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Typedef for the typical usage of <a class="link" href="posix__basic_descriptor.html" title="posix::basic_descriptor"><code class="computeroutput"><span class="identifier">posix</span><span class="special">::</span><span class="identifier">basic_descriptor</span></code></a>.
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</p>
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<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">basic_descriptor</span> <span class="identifier">descriptor</span><span class="special">;</span>
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</pre>
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<h5>
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<a name="asio.reference.posix__descriptor.h0"></a>
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<span><a name="asio.reference.posix__descriptor.types"></a></span><a class="link" href="posix__descriptor.html#asio.reference.posix__descriptor.types">Types</a>
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</h5>
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<div class="informaltable"><table class="table">
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<colgroup>
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<thead><tr>
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Name
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Description
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</tr></thead>
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<a class="link" href="posix__basic_descriptor__rebind_executor.html" title="posix::basic_descriptor::rebind_executor"><span class="bold"><strong>rebind_executor</strong></span></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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Rebinds the descriptor type to another executor.
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</p>
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<p>
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<a class="link" href="posix__basic_descriptor/bytes_readable.html" title="posix::basic_descriptor::bytes_readable"><span class="bold"><strong>bytes_readable</strong></span></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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IO control command to get the amount of data that can be read without
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blocking.
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</p>
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</td>
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</tr>
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<td>
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<p>
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<a class="link" href="posix__basic_descriptor/executor_type.html" title="posix::basic_descriptor::executor_type"><span class="bold"><strong>executor_type</strong></span></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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The type of the executor associated with the object.
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</p>
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<p>
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<a class="link" href="posix__basic_descriptor/lowest_layer_type.html" title="posix::basic_descriptor::lowest_layer_type"><span class="bold"><strong>lowest_layer_type</strong></span></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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A descriptor is always the lowest layer.
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<p>
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<a class="link" href="posix__basic_descriptor/native_handle_type.html" title="posix::basic_descriptor::native_handle_type"><span class="bold"><strong>native_handle_type</strong></span></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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The native representation of a descriptor.
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</p>
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</td>
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</tr>
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<p>
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<a class="link" href="posix__basic_descriptor/wait_type.html" title="posix::basic_descriptor::wait_type"><span class="bold"><strong>wait_type</strong></span></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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Wait types.
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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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<h5>
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<a name="asio.reference.posix__descriptor.h1"></a>
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<span><a name="asio.reference.posix__descriptor.member_functions"></a></span><a class="link" href="posix__descriptor.html#asio.reference.posix__descriptor.member_functions">Member
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Functions</a>
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</h5>
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<div class="informaltable"><table class="table">
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<colgroup>
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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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Name
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</p>
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</th>
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<th>
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<p>
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Description
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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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<td>
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<p>
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<a class="link" href="posix__basic_descriptor/assign.html" title="posix::basic_descriptor::assign"><span class="bold"><strong>assign</strong></span></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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Assign an existing native descriptor to the descriptor.
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</p>
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</td>
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</tr>
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<td>
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<p>
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<a class="link" href="posix__basic_descriptor/async_wait.html" title="posix::basic_descriptor::async_wait"><span class="bold"><strong>async_wait</strong></span></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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Asynchronously wait for the descriptor to become ready to read,
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ready to write, or to have pending error conditions.
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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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<a class="link" href="posix__basic_descriptor/basic_descriptor.html" title="posix::basic_descriptor::basic_descriptor"><span class="bold"><strong>basic_descriptor</strong></span></a> <span class="silver">[constructor]</span>
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</p>
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</td>
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<td>
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<p>
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Construct a descriptor without opening it. <br> <span class="silver"> —</span><br> Construct
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a descriptor on an existing native descriptor. <br> <span class="silver"> —</span><br> Move-construct
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a descriptor from another. <br> <span class="silver"> —</span><br> Move-construct a basic_descriptor
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from a descriptor of another executor type.
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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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<a class="link" href="posix__basic_descriptor/cancel.html" title="posix::basic_descriptor::cancel"><span class="bold"><strong>cancel</strong></span></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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Cancel all asynchronous operations associated with the descriptor.
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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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<a class="link" href="posix__basic_descriptor/close.html" title="posix::basic_descriptor::close"><span class="bold"><strong>close</strong></span></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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Close the descriptor.
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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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<a class="link" href="posix__basic_descriptor/get_executor.html" title="posix::basic_descriptor::get_executor"><span class="bold"><strong>get_executor</strong></span></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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Get the executor associated with the object.
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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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<a class="link" href="posix__basic_descriptor/io_control.html" title="posix::basic_descriptor::io_control"><span class="bold"><strong>io_control</strong></span></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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Perform an IO control command on the descriptor.
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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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<a class="link" href="posix__basic_descriptor/is_open.html" title="posix::basic_descriptor::is_open"><span class="bold"><strong>is_open</strong></span></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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Determine whether the descriptor is open.
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</p>
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</td>
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</tr>
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<td>
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<p>
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<a class="link" href="posix__basic_descriptor/lowest_layer.html" title="posix::basic_descriptor::lowest_layer"><span class="bold"><strong>lowest_layer</strong></span></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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Get a reference to the lowest layer. <br> <span class="silver"> —</span><br> Get a const
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reference to the lowest layer.
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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 class="link" href="posix__basic_descriptor/native_handle.html" title="posix::basic_descriptor::native_handle"><span class="bold"><strong>native_handle</strong></span></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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Get the native descriptor representation.
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</p>
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</td>
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</tr>
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<td>
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<p>
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<a class="link" href="posix__basic_descriptor/native_non_blocking.html" title="posix::basic_descriptor::native_non_blocking"><span class="bold"><strong>native_non_blocking</strong></span></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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Gets the non-blocking mode of the native descriptor implementation.
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<br> <span class="silver"> —</span><br> Sets the non-blocking mode of the native descriptor
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implementation.
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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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<a class="link" href="posix__basic_descriptor/non_blocking.html" title="posix::basic_descriptor::non_blocking"><span class="bold"><strong>non_blocking</strong></span></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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Gets the non-blocking mode of the descriptor. <br> <span class="silver"> —</span><br> Sets
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the non-blocking mode of the descriptor.
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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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<a class="link" href="posix__basic_descriptor/operator_eq_.html" title="posix::basic_descriptor::operator="><span class="bold"><strong>operator=</strong></span></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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Move-assign a descriptor from another. <br> <span class="silver"> —</span><br> Move-assign
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a basic_descriptor from a descriptor of another executor type.
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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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<a class="link" href="posix__basic_descriptor/release.html" title="posix::basic_descriptor::release"><span class="bold"><strong>release</strong></span></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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Release ownership of the native descriptor implementation.
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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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<a class="link" href="posix__basic_descriptor/wait.html" title="posix::basic_descriptor::wait"><span class="bold"><strong>wait</strong></span></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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Wait for the descriptor to become ready to read, ready to write,
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or to have pending error conditions.
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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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<h5>
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||
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<a name="asio.reference.posix__descriptor.h2"></a>
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||
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<span><a name="asio.reference.posix__descriptor.protected_member_functions"></a></span><a class="link" href="posix__descriptor.html#asio.reference.posix__descriptor.protected_member_functions">Protected
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Member Functions</a>
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</h5>
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||
|
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<div class="informaltable"><table class="table">
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||
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<colgroup>
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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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Name
|
||
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</p>
|
||
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</th>
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||
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<th>
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||
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<p>
|
||
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|
Description
|
||
|
|
</p>
|
||
|
|
</th>
|
||
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</tr></thead>
|
||
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|
<tbody><tr>
|
||
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<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="posix__basic_descriptor/_basic_descriptor.html" title="posix::basic_descriptor::~basic_descriptor"><span class="bold"><strong>~basic_descriptor</strong></span></a> <span class="silver">[destructor]</span>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
Protected destructor to prevent deletion through this type.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr></tbody>
|
||
|
|
</table></div>
|
||
|
|
<p>
|
||
|
|
The <a class="link" href="posix__basic_descriptor.html" title="posix::basic_descriptor"><code class="computeroutput"><span class="identifier">posix</span><span class="special">::</span><span class="identifier">basic_descriptor</span></code></a> class template
|
||
|
|
provides the ability to wrap a POSIX descriptor.
|
||
|
|
</p>
|
||
|
|
<h5>
|
||
|
|
<a name="asio.reference.posix__descriptor.h3"></a>
|
||
|
|
<span><a name="asio.reference.posix__descriptor.thread_safety"></a></span><a class="link" href="posix__descriptor.html#asio.reference.posix__descriptor.thread_safety">Thread
|
||
|
|
Safety</a>
|
||
|
|
</h5>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></span> Safe.
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Shared</em></span> <span class="emphasis"><em>objects:</em></span> Unsafe.
|
||
|
|
</p>
|
||
|
|
<h5>
|
||
|
|
<a name="asio.reference.posix__descriptor.h4"></a>
|
||
|
|
<span><a name="asio.reference.posix__descriptor.requirements"></a></span><a class="link" href="posix__descriptor.html#asio.reference.posix__descriptor.requirements">Requirements</a>
|
||
|
|
</h5>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Header: </em></span><code class="literal">asio/posix/descriptor.hpp</code>
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
<div class="copyright-footer">Copyright © 2003-2023 Christopher M. Kohlhoff<p>
|
||
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||
|
|
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>)
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
<hr>
|
||
|
|
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