<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>libstdc++: std::future< void > Class Template Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(initResizable); /* @license-end */</script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.15 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(function(){initNavTree('a02348.html','');}); /* @license-end */ </script> <div id="doc-content"> <div class="header"> <div class="summary"> <a href="#pub-types">Public Types</a> | <a href="#pub-methods">Public Member Functions</a> | <a href="#pub-static-methods">Static Public Member Functions</a> | <a href="#pro-types">Protected Types</a> | <a href="#pro-methods">Protected Member Functions</a> | <a href="#friends">Friends</a> | <a href="a02345.html">List of all members</a> </div> <div class="headertitle"> <div class="title">std::future< void > Class Template Reference<div class="ingroups"><a class="el" href="a01465.html">Concurrency</a> » <a class="el" href="a01469.html">Futures</a></div></div> </div> </div><!--header--> <div class="contents"> <div class="dynheader"> Inheritance diagram for std::future< void >:</div> <div class="dyncontent"> <div class="center"><iframe scrolling="no" frameborder="0" src="a02347.svg" width="136" height="196"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe> </div> <center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a> Public Types</h2></td></tr> <tr class="memitem:a832cc3cad4729e395bea2475e1b3a741"><td class="memTemplParams" colspan="2">template<typename _Res > </td></tr> <tr class="memitem:a832cc3cad4729e395bea2475e1b3a741"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a02248.html#a832cc3cad4729e395bea2475e1b3a741">_Ptr</a> = <a class="el" href="a07964.html">unique_ptr</a>< _Res, _Result_base::_Deleter ></td></tr> <tr class="separator:a832cc3cad4729e395bea2475e1b3a741"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ac8ced3b29c8d9221a9ae084afd66093b"><td class="memItemLeft" align="right" valign="top"><a id="ac8ced3b29c8d9221a9ae084afd66093b"></a> using </td><td class="memItemRight" valign="bottom"><b>_State_base</b> = _State_baseV2</td></tr> <tr class="separator:ac8ced3b29c8d9221a9ae084afd66093b"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr class="memitem:a8d804ed9d3fb0818d7d4af8197cc00a7"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a02348.html#a8d804ed9d3fb0818d7d4af8197cc00a7">future</a> (<a class="el" href="a02232.html">future</a> &&__uf) noexcept</td></tr> <tr class="separator:a8d804ed9d3fb0818d7d4af8197cc00a7"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a9b952f0c32fdee8b1f072b6aaa3848f8"><td class="memItemLeft" align="right" valign="top"><a id="a9b952f0c32fdee8b1f072b6aaa3848f8"></a>  </td><td class="memItemRight" valign="bottom"><b>future</b> (const <a class="el" href="a02232.html">future</a> &)=delete</td></tr> <tr class="separator:a9b952f0c32fdee8b1f072b6aaa3848f8"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a22b2cb90803ba2cae78dafa81ba278d6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a02348.html#a22b2cb90803ba2cae78dafa81ba278d6">get</a> ()</td></tr> <tr class="separator:a22b2cb90803ba2cae78dafa81ba278d6"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:af7c2ac7309722c0482de016edb0452dc"><td class="memItemLeft" align="right" valign="top"><a id="af7c2ac7309722c0482de016edb0452dc"></a> <a class="el" href="a02232.html">future</a> & </td><td class="memItemRight" valign="bottom"><b>operator=</b> (const <a class="el" href="a02232.html">future</a> &)=delete</td></tr> <tr class="separator:af7c2ac7309722c0482de016edb0452dc"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ad538741f79321ffbff4f5f857b7033d4"><td class="memItemLeft" align="right" valign="top"><a id="ad538741f79321ffbff4f5f857b7033d4"></a> <a class="el" href="a02232.html">future</a> & </td><td class="memItemRight" valign="bottom"><b>operator=</b> (<a class="el" href="a02232.html">future</a> &&__fut) noexcept</td></tr> <tr class="separator:ad538741f79321ffbff4f5f857b7033d4"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gac5a5889bb4359980c1452b45cfd15c35"><td class="memItemLeft" align="right" valign="top"> <a class="el" href="a02236.html">shared_future</a>< void > </td><td class="memItemRight" valign="bottom"><b>share</b> () noexcept</td></tr> <tr class="separator:gac5a5889bb4359980c1452b45cfd15c35"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a88fd6c028a80fd3664f02ba6ea26ec63"><td class="memItemLeft" align="right" valign="top"><a id="a88fd6c028a80fd3664f02ba6ea26ec63"></a> bool </td><td class="memItemRight" valign="bottom"><b>valid</b> () const noexcept</td></tr> <tr class="separator:a88fd6c028a80fd3664f02ba6ea26ec63"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a5ceb9b34ec347b6a3f05164809b8f300"><td class="memItemLeft" align="right" valign="top"><a id="a5ceb9b34ec347b6a3f05164809b8f300"></a> void </td><td class="memItemRight" valign="bottom"><b>wait</b> () const</td></tr> <tr class="separator:a5ceb9b34ec347b6a3f05164809b8f300"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:acab3bc59f416109486f8925bdb9c870f"><td class="memItemLeft" align="right" valign="top"><a id="acab3bc59f416109486f8925bdb9c870f"></a> <a class="el" href="a01469.html#ga528eb8f3b350394c0406d4d58ab7dbf4">future_status</a> </td><td class="memItemRight" valign="bottom"><b>wait_for</b> (const <a class="el" href="a01828.html">chrono::duration</a>< _Rep, _Period > &__rel) const</td></tr> <tr class="separator:acab3bc59f416109486f8925bdb9c870f"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a35396a432f77cc1631b8434ddd9cad6e"><td class="memItemLeft" align="right" valign="top"><a id="a35396a432f77cc1631b8434ddd9cad6e"></a> <a class="el" href="a01469.html#ga528eb8f3b350394c0406d4d58ab7dbf4">future_status</a> </td><td class="memItemRight" valign="bottom"><b>wait_until</b> (const <a class="el" href="a01832.html">chrono::time_point</a>< _Clock, _Duration > &__abs) const</td></tr> <tr class="separator:a35396a432f77cc1631b8434ddd9cad6e"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a> Static Public Member Functions</h2></td></tr> <tr class="memitem:acce430d2440c7dcad1e304ac25ab01eb"><td class="memTemplParams" colspan="2"><a id="acce430d2440c7dcad1e304ac25ab01eb"></a> template<typename _Res , typename _Allocator > </td></tr> <tr class="memitem:acce430d2440c7dcad1e304ac25ab01eb"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="a02248.html#a832cc3cad4729e395bea2475e1b3a741">_Ptr</a>< <a class="el" href="a02264.html">_Result_alloc</a>< _Res, _Allocator > > </td><td class="memTemplItemRight" valign="bottom"><b>_S_allocate_result</b> (const _Allocator &__a)</td></tr> <tr class="separator:acce430d2440c7dcad1e304ac25ab01eb"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:aaabd993cb789d1d0670699bbf34fa44b"><td class="memTemplParams" colspan="2"><a id="aaabd993cb789d1d0670699bbf34fa44b"></a> template<typename _Res , typename _Tp > </td></tr> <tr class="memitem:aaabd993cb789d1d0670699bbf34fa44b"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="a02248.html#a832cc3cad4729e395bea2475e1b3a741">_Ptr</a>< <a class="el" href="a02260.html">_Result</a>< _Res > > </td><td class="memTemplItemRight" valign="bottom"><b>_S_allocate_result</b> (const <a class="el" href="a04704.html">std::allocator</a>< _Tp > &__a)</td></tr> <tr class="separator:aaabd993cb789d1d0670699bbf34fa44b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga375deada08a36f6aa58f47771811d65b"><td class="memTemplParams" colspan="2"> template<typename _BoundFn > </td></tr> <tr class="memitem:ga375deada08a36f6aa58f47771811d65b"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="a06848.html">std::shared_ptr</a>< _State_base > </td><td class="memTemplItemRight" valign="bottom"><b>_S_make_async_state</b> (_BoundFn &&__fn)</td></tr> <tr class="separator:ga375deada08a36f6aa58f47771811d65b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga3369fca66866fa01dbf00aa5b322b3d9"><td class="memTemplParams" colspan="2"> template<typename _BoundFn > </td></tr> <tr class="memitem:ga3369fca66866fa01dbf00aa5b322b3d9"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="a06848.html">std::shared_ptr</a>< _State_base > </td><td class="memTemplItemRight" valign="bottom"><b>_S_make_deferred_state</b> (_BoundFn &&__fn)</td></tr> <tr class="separator:ga3369fca66866fa01dbf00aa5b322b3d9"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:accf70d948921733750f138b5b49e836d"><td class="memTemplParams" colspan="2"><a id="accf70d948921733750f138b5b49e836d"></a> template<typename _Res_ptr , typename _BoundFn > </td></tr> <tr class="memitem:accf70d948921733750f138b5b49e836d"><td class="memTemplItemLeft" align="right" valign="top">static _Task_setter< _Res_ptr, _BoundFn > </td><td class="memTemplItemRight" valign="bottom"><b>_S_task_setter</b> (_Res_ptr &__ptr, _BoundFn &__call)</td></tr> <tr class="separator:accf70d948921733750f138b5b49e836d"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-types"></a> Protected Types</h2></td></tr> <tr class="memitem:a748614f7a0518bf851f65aca7674c0f5"><td class="memItemLeft" align="right" valign="top"><a id="a748614f7a0518bf851f65aca7674c0f5"></a> typedef <a class="el" href="a02260.html">__future_base::_Result</a>< void > & </td><td class="memItemRight" valign="bottom"><b>__result_type</b></td></tr> <tr class="separator:a748614f7a0518bf851f65aca7674c0f5"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a> Protected Member Functions</h2></td></tr> <tr class="memitem:a71d62e5218e561c5c4507eb3e7f70474"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a02324.html">__result_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a02336.html#a71d62e5218e561c5c4507eb3e7f70474">_M_get_result</a> () const</td></tr> <tr class="separator:a71d62e5218e561c5c4507eb3e7f70474"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a5c8360e51da774112201f64bcf3e8f3e"><td class="memItemLeft" align="right" valign="top"><a id="a5c8360e51da774112201f64bcf3e8f3e"></a> void </td><td class="memItemRight" valign="bottom"><b>_M_swap</b> (<a class="el" href="a02336.html">__basic_future</a> &__that) noexcept</td></tr> <tr class="separator:a5c8360e51da774112201f64bcf3e8f3e"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a> Friends</h2></td></tr> <tr class="memitem:abb31910ae0c8017fcea5d8957c5fca06"><td class="memTemplParams" colspan="2"><a id="abb31910ae0c8017fcea5d8957c5fca06"></a> template<typename _Fn , typename... _Args> </td></tr> <tr class="memitem:abb31910ae0c8017fcea5d8957c5fca06"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="a02232.html">future</a>< __async_result_of< _Fn, _Args... > > </td><td class="memTemplItemRight" valign="bottom"><b>async</b> (<a class="el" href="a01469.html#ga6f4ad125d364f01560e2ed20a3c8bb5b">launch</a>, _Fn &&, _Args &&...)</td></tr> <tr class="separator:abb31910ae0c8017fcea5d8957c5fca06"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a01a090c398a08d8c1a25a8f2f3e4ec6a"><td class="memTemplParams" colspan="2"><a id="a01a090c398a08d8c1a25a8f2f3e4ec6a"></a> template<typename > </td></tr> <tr class="memitem:a01a090c398a08d8c1a25a8f2f3e4ec6a"><td class="memTemplItemLeft" align="right" valign="top">class </td><td class="memTemplItemRight" valign="bottom"><b>packaged_task</b></td></tr> <tr class="separator:a01a090c398a08d8c1a25a8f2f3e4ec6a"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a2814d08166fbffc0f995f7b63e7877dc"><td class="memItemLeft" align="right" valign="top"><a id="a2814d08166fbffc0f995f7b63e7877dc"></a> class </td><td class="memItemRight" valign="bottom"><b>promise< void ></b></td></tr> <tr class="separator:a2814d08166fbffc0f995f7b63e7877dc"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <div class="textblock"><h3>template<><br /> class std::future< void ></h3> <p>Explicit specialization for future<void> </p> <p class="definition">Definition at line <a class="el" href="a00074_source.html#l00847">847</a> of file <a class="el" href="a00074_source.html">future</a>.</p> </div><h2 class="groupheader">Member Typedef Documentation</h2> <a id="a832cc3cad4729e395bea2475e1b3a741"></a> <h2 class="memtitle"><span class="permalink"><a href="#a832cc3cad4729e395bea2475e1b3a741">◆ </a></span>_Ptr</h2> <div class="memitem"> <div class="memproto"> <div class="memtemplate"> template<typename _Res > </div> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">using <a class="el" href="a02248.html#a832cc3cad4729e395bea2475e1b3a741">std::__future_base::_Ptr</a> = <a class="el" href="a07964.html">unique_ptr</a><_Res, _Result_base::_Deleter></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inherited</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>A unique_ptr for result objects. </p> <p class="definition">Definition at line <a class="el" href="a00074_source.html#l00223">223</a> of file <a class="el" href="a00074_source.html">future</a>.</p> </div> </div> <h2 class="groupheader">Constructor & Destructor Documentation</h2> <a id="a8d804ed9d3fb0818d7d4af8197cc00a7"></a> <h2 class="memtitle"><span class="permalink"><a href="#a8d804ed9d3fb0818d7d4af8197cc00a7">◆ </a></span>future()</h2> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a02232.html">std::future</a>< void >::<a class="el" href="a02232.html">future</a> </td> <td>(</td> <td class="paramtype"><a class="el" href="a02232.html">future</a>< void > && </td> <td class="paramname"><em>__uf</em></td><td>)</td> <td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">noexcept</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Move constructor. </p> <p class="definition">Definition at line <a class="el" href="a00074_source.html#l00865">865</a> of file <a class="el" href="a00074_source.html">future</a>.</p> </div> </div> <h2 class="groupheader">Member Function Documentation</h2> <a id="a71d62e5218e561c5c4507eb3e7f70474"></a> <h2 class="memtitle"><span class="permalink"><a href="#a71d62e5218e561c5c4507eb3e7f70474">◆ </a></span>_M_get_result()</h2> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname"><a class="el" href="a02324.html">__result_type</a> <a class="el" href="a02336.html">std::__basic_future</a>< void >::_M_get_result </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">protected</span><span class="mlabel">inherited</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Wait for the state to be ready and rethrow any stored exception. </p> <p class="definition">Definition at line <a class="el" href="a00074_source.html#l00714">714</a> of file <a class="el" href="a00074_source.html">future</a>.</p> </div> </div> <a id="a22b2cb90803ba2cae78dafa81ba278d6"></a> <h2 class="memtitle"><span class="permalink"><a href="#a22b2cb90803ba2cae78dafa81ba278d6">◆ </a></span>get()</h2> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">void <a class="el" href="a02232.html">std::future</a>< void >::get </td> <td>(</td> <td class="paramname"></td><td>)</td> <td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Retrieving the value. </p> <p class="definition">Definition at line <a class="el" href="a00074_source.html#l00879">879</a> of file <a class="el" href="a00074_source.html">future</a>.</p> <p class="reference">References <a class="el" href="a00074_source.html#l00714">std::__basic_future< _Res >::_M_get_result()</a>.</p> </div> </div> <hr/>The documentation for this class was generated from the following file:<ul> <li><a class="el" href="a00074_source.html">future</a></li> </ul> </div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="a01538.html">std</a></li><li class="navelem"><a class="el" href="a02348.html">future< void ></a></li> <li class="footer">Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.15 </li> </ul> </div> </body> </html>