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<title>GNU Radio 3.3.0 C++ API: gr_select_handler Class Reference</title>
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<h1>gr_select_handler Class Reference</h1><!-- doxytag: class="gr_select_handler" -->
<p>Abstract handler for select based notification.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="gr__select__handler_8h_source.html">gr_select_handler.h</a>></code></p>
<p><a href="classgr__select__handler-members.html">List of all members.</a></p>
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<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#a9b80622ea03a3e6bf0fea745645b210c">~gr_select_handler</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#a1855395f405a0ffd429ccd5aac7f98e8">fd</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#a956166f072ade292b3f074a2817b7583">file_descriptor</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#a724b67b0348d179a73c470ae7af362fe">handle_read</a> ()=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Called when file_descriptor is readable. <a href="#a724b67b0348d179a73c470ae7af362fe"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#a63f2969f8e586f52b89c67ecfbe33173">handle_write</a> ()=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Called when file_descriptor is writable. <a href="#a63f2969f8e586f52b89c67ecfbe33173"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#aa7ee5d26f4e0ebf6966eadf8f180cd86">readable</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#a3d0294e3233c547a06b13ba107643045">writable</a> ()</td></tr>
<tr><td colspan="2"><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__select__handler.html#acd6f81769629190cdbfbe15e2dbedc75">gr_select_handler</a> (int file_descriptor)</td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Abstract handler for select based notification. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classgr__dispatcher.html" title="invoke callbacks based on select.">gr_dispatcher</a> </dd></dl>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="acd6f81769629190cdbfbe15e2dbedc75"></a><!-- doxytag: member="gr_select_handler::gr_select_handler" ref="acd6f81769629190cdbfbe15e2dbedc75" args="(int file_descriptor)" -->
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<td class="memname">gr_select_handler::gr_select_handler </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>file_descriptor</em></td>
<td> ) </td>
<td><code> [protected]</code></td>
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<a class="anchor" id="a9b80622ea03a3e6bf0fea745645b210c"></a><!-- doxytag: member="gr_select_handler::~gr_select_handler" ref="a9b80622ea03a3e6bf0fea745645b210c" args="()" -->
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<td class="memname">virtual gr_select_handler::~gr_select_handler </td>
<td>(</td>
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<td> ) </td>
<td><code> [virtual]</code></td>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a1855395f405a0ffd429ccd5aac7f98e8"></a><!-- doxytag: member="gr_select_handler::fd" ref="a1855395f405a0ffd429ccd5aac7f98e8" args="() const " -->
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<td class="memname">int gr_select_handler::fd </td>
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<td class="paramname"></td>
<td> ) </td>
<td> const<code> [inline]</code></td>
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<a class="anchor" id="a956166f072ade292b3f074a2817b7583"></a><!-- doxytag: member="gr_select_handler::file_descriptor" ref="a956166f072ade292b3f074a2817b7583" args="() const " -->
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<td class="memname">int gr_select_handler::file_descriptor </td>
<td>(</td>
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<td> ) </td>
<td> const<code> [inline]</code></td>
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<a class="anchor" id="a724b67b0348d179a73c470ae7af362fe"></a><!-- doxytag: member="gr_select_handler::handle_read" ref="a724b67b0348d179a73c470ae7af362fe" args="()=0" -->
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<td class="memname">virtual void gr_select_handler::handle_read </td>
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<td><code> [pure virtual]</code></td>
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<p>Called when file_descriptor is readable. </p>
<p>Called when the dispatcher detects that file_descriptor can be read without blocking. </p>
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<a class="anchor" id="a63f2969f8e586f52b89c67ecfbe33173"></a><!-- doxytag: member="gr_select_handler::handle_write" ref="a63f2969f8e586f52b89c67ecfbe33173" args="()=0" -->
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<td class="memname">virtual void gr_select_handler::handle_write </td>
<td>(</td>
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<td> ) </td>
<td><code> [pure virtual]</code></td>
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<p>Called when file_descriptor is writable. </p>
<p>Called when dispatcher detects that file descriptor can be written without blocking. </p>
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<a class="anchor" id="aa7ee5d26f4e0ebf6966eadf8f180cd86"></a><!-- doxytag: member="gr_select_handler::readable" ref="aa7ee5d26f4e0ebf6966eadf8f180cd86" args="()" -->
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<td class="memname">virtual <a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> gr_select_handler::readable </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [inline, virtual]</code></td>
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<p>Called each time around the dispatcher loop to determine whether this handler's file descriptor should be added to the list on which read events can occur. The default method returns true, indicating that by default, all handlers are interested in read events. </p>
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<a class="anchor" id="a3d0294e3233c547a06b13ba107643045"></a><!-- doxytag: member="gr_select_handler::writable" ref="a3d0294e3233c547a06b13ba107643045" args="()" -->
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<td class="memname">virtual <a class="el" href="gc__types_8h.html#a0f2b5d454b7e4dda3861032cfce91085">bool</a> gr_select_handler::writable </td>
<td>(</td>
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<td> ) </td>
<td><code> [inline, virtual]</code></td>
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<p>Called each time around the dispatcher loop to determine whether this handler's file descriptor should be added to the list on which write events can occur. The default method returns true, indicating that by default, all handlers are interested in write events. </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="gr__select__handler_8h_source.html">gr_select_handler.h</a></li>
</ul>
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