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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://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 1.8.5"/> <title>Apache Portable Runtime: Poll Routines</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="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { searchBox.OnSelectItem(0); }); </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" 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class="memItemRight" valign="bottom"><a class="el" href="group__pollopts.html">Poll options</a></td></tr> <tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:group__pollflags"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pollflags.html">Pollset Flags</a></td></tr> <tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a> Data Structures</h2></td></tr> <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">union  </td><td class="memItemRight" valign="bottom"><a class="el" href="unionapr__descriptor.html">apr_descriptor</a></td></tr> <tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a></td></tr> <tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a> Typedefs</h2></td></tr> <tr class="memitem:ga0c89b184cbe2337e44207f1ad245129b"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga0c89b184cbe2337e44207f1ad245129b">apr_pollfd_t</a></td></tr> <tr class="separator:ga0c89b184cbe2337e44207f1ad245129b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga680da1f10ac5ef75efc503a9d15b8906"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a></td></tr> <tr class="separator:ga680da1f10ac5ef75efc503a9d15b8906"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gae382e39bdf0c5a02fca7da3944bece08"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a></td></tr> <tr class="separator:gae382e39bdf0c5a02fca7da3944bece08"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gad440412b52e12fcfddfdd5b1618359e5"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a>(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gad440412b52e12fcfddfdd5b1618359e5">apr_pollcb_cb_t</a> )(void *baton, <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td></tr> <tr class="separator:gad440412b52e12fcfddfdd5b1618359e5"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a> Enumerations</h2></td></tr> <tr class="memitem:gabe6f1238ea45e9425fa052e2788e4a29"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a> { <br/>   <a class="el" href="group__apr__poll.html#ggabe6f1238ea45e9425fa052e2788e4a29ae68b155914b79d4a58519675dfc24d94">APR_POLLSET_DEFAULT</a>, <a class="el" href="group__apr__poll.html#ggabe6f1238ea45e9425fa052e2788e4a29aa6613bebee1abb348da2a153f91c738e">APR_POLLSET_SELECT</a>, <a class="el" href="group__apr__poll.html#ggabe6f1238ea45e9425fa052e2788e4a29a2722387d6523f8f02cec7c31a45966d4">APR_POLLSET_KQUEUE</a>, <a class="el" href="group__apr__poll.html#ggabe6f1238ea45e9425fa052e2788e4a29aec66f6da923595ff0a6fa20f4bc41e46">APR_POLLSET_PORT</a>, <br/>   <a class="el" href="group__apr__poll.html#ggabe6f1238ea45e9425fa052e2788e4a29a142ebdcab58ccfabd5d964ff3ab476ab">APR_POLLSET_EPOLL</a>, <a class="el" href="group__apr__poll.html#ggabe6f1238ea45e9425fa052e2788e4a29aa8c0b4c036644ea4518f8d7c2fd4fe8e">APR_POLLSET_POLL</a>, <a class="el" href="group__apr__poll.html#ggabe6f1238ea45e9425fa052e2788e4a29ace0288893b2db65847536c41c0048e82">APR_POLLSET_AIO_MSGQ</a> <br/> }</td></tr> <tr class="separator:gabe6f1238ea45e9425fa052e2788e4a29"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga0a8549d84c1721788b102a4cc8b4b0f0"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga0a8549d84c1721788b102a4cc8b4b0f0">apr_datatype_e</a> { <a class="el" href="group__apr__poll.html#gga0a8549d84c1721788b102a4cc8b4b0f0aeb85f43492052bf0788d31f6dd85a222">APR_NO_DESC</a>, <a class="el" href="group__apr__poll.html#gga0a8549d84c1721788b102a4cc8b4b0f0a3629c5b3166fde91792f2f913fbd72f0">APR_POLL_SOCKET</a>, <a class="el" href="group__apr__poll.html#gga0a8549d84c1721788b102a4cc8b4b0f0a8351d461bf66b706232962fd02e84202">APR_POLL_FILE</a>, <a class="el" href="group__apr__poll.html#gga0a8549d84c1721788b102a4cc8b4b0f0a413b387c7fe1ca7b096d46dfd9942fe5">APR_POLL_LASTDESC</a> }</td></tr> <tr class="separator:ga0a8549d84c1721788b102a4cc8b4b0f0"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> Functions</h2></td></tr> <tr class="memitem:ga4ca4056a19daee8fe94ddba100fe2326"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga4ca4056a19daee8fe94ddba100fe2326">apr_pollset_create</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> **pollset, apr_uint32_t size, <a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, apr_uint32_t flags)</td></tr> <tr class="separator:ga4ca4056a19daee8fe94ddba100fe2326"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga9448a2d756868aa1c6dbc9726a2e32b5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga9448a2d756868aa1c6dbc9726a2e32b5">apr_pollset_create_ex</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> **pollset, apr_uint32_t size, <a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, apr_uint32_t flags, <a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a> method)</td></tr> <tr class="separator:ga9448a2d756868aa1c6dbc9726a2e32b5"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaa06c538d3fea9d860374043aff9450b2"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gaa06c538d3fea9d860374043aff9450b2">apr_pollset_destroy</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> *pollset)</td></tr> <tr class="separator:gaa06c538d3fea9d860374043aff9450b2"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4ec50bf9a11c6b60927c51b81412f5b9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga4ec50bf9a11c6b60927c51b81412f5b9">apr_pollset_add</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> *pollset, const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td></tr> <tr class="separator:ga4ec50bf9a11c6b60927c51b81412f5b9"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga3c99c06e142d6b6b789eeb6086122e3a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga3c99c06e142d6b6b789eeb6086122e3a">apr_pollset_remove</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> *pollset, const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td></tr> <tr class="separator:ga3c99c06e142d6b6b789eeb6086122e3a"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga6b31d7b3a7b2d356370403dd2b79ecf3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> *pollset, <a class="el" href="group__apr__time.html#gaae2129185a395cc393f76fabf4f43e47">apr_interval_time_t</a> timeout, apr_int32_t *num, const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> **descriptors)</td></tr> <tr class="separator:ga6b31d7b3a7b2d356370403dd2b79ecf3"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gac5e86828143e169e18b2a6eab94be531"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gac5e86828143e169e18b2a6eab94be531">apr_pollset_wakeup</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> *pollset)</td></tr> <tr class="separator:gac5e86828143e169e18b2a6eab94be531"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gad1d8a1ccd14952be6da5f272ca8dda76"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gad1d8a1ccd14952be6da5f272ca8dda76">apr_poll</a> (<a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *aprset, apr_int32_t numsock, apr_int32_t *nsds, <a class="el" href="group__apr__time.html#gaae2129185a395cc393f76fabf4f43e47">apr_interval_time_t</a> timeout)</td></tr> <tr class="separator:gad1d8a1ccd14952be6da5f272ca8dda76"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga942ebbcc17d27911da86e1bd5c7a592e"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga942ebbcc17d27911da86e1bd5c7a592e">apr_pollset_method_name</a> (<a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> *pollset)</td></tr> <tr class="separator:ga942ebbcc17d27911da86e1bd5c7a592e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga5d64867d7a3abd53d3765b4b47cf774f"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga5d64867d7a3abd53d3765b4b47cf774f">apr_poll_method_defname</a> (void)</td></tr> <tr class="separator:ga5d64867d7a3abd53d3765b4b47cf774f"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga76c33736268d57fca503790711d6d04e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga76c33736268d57fca503790711d6d04e">apr_pollcb_create</a> (<a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> **pollcb, apr_uint32_t size, <a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, apr_uint32_t flags)</td></tr> <tr class="separator:ga76c33736268d57fca503790711d6d04e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga2ebdd0cba2d3b8333c46ee48170f8e90"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga2ebdd0cba2d3b8333c46ee48170f8e90">apr_pollcb_create_ex</a> (<a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> **pollcb, apr_uint32_t size, <a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> *p, apr_uint32_t flags, <a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a> method)</td></tr> <tr class="separator:ga2ebdd0cba2d3b8333c46ee48170f8e90"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga8fab02dfa803d911dae98656fac7a2c8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga8fab02dfa803d911dae98656fac7a2c8">apr_pollcb_add</a> (<a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> *pollcb, <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td></tr> <tr class="separator:ga8fab02dfa803d911dae98656fac7a2c8"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gad004b778a14d6bcc4e48a10e5af729d8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gad004b778a14d6bcc4e48a10e5af729d8">apr_pollcb_remove</a> (<a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> *pollcb, <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td></tr> <tr class="separator:gad004b778a14d6bcc4e48a10e5af729d8"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga11765d1b27e2f621a8dcd2c40f0e259c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga11765d1b27e2f621a8dcd2c40f0e259c">apr_pollcb_poll</a> (<a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> *pollcb, <a class="el" href="group__apr__time.html#gaae2129185a395cc393f76fabf4f43e47">apr_interval_time_t</a> timeout, <a class="el" href="group__apr__poll.html#gad440412b52e12fcfddfdd5b1618359e5">apr_pollcb_cb_t</a> func, void *baton)</td></tr> <tr class="separator:ga11765d1b27e2f621a8dcd2c40f0e259c"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gacfc4c9e2dd39423b6a29b3a2aacb9bf1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#gacfc4c9e2dd39423b6a29b3a2aacb9bf1">apr_pollcb_wakeup</a> (<a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> *pollcb)</td></tr> <tr class="separator:gacfc4c9e2dd39423b6a29b3a2aacb9bf1"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga489123191ad62119d111a23b3eb9f97f"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__apr__poll.html#ga489123191ad62119d111a23b3eb9f97f">apr_pollcb_method_name</a> (<a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> *pollcb)</td></tr> <tr class="separator:ga489123191ad62119d111a23b3eb9f97f"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <h2 class="groupheader">Typedef Documentation</h2> <a class="anchor" id="gad440412b52e12fcfddfdd5b1618359e5"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">typedef <a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a>(* apr_pollcb_cb_t)(void *baton, <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td> </tr> </table> </div><div class="memdoc"> <p>Function prototype for pollcb handlers </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">baton</td><td>Opaque baton passed into <a class="el" href="group__apr__poll.html#ga11765d1b27e2f621a8dcd2c40f0e259c">apr_pollcb_poll()</a> </td></tr> <tr><td class="paramname">descriptor</td><td>Contains the notification for an active descriptor. The <em>rtnevents</em> member describes which events were triggered for this descriptor. </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If the pollcb handler does not return APR_SUCCESS, the <a class="el" href="group__apr__poll.html#ga11765d1b27e2f621a8dcd2c40f0e259c">apr_pollcb_poll()</a> call returns with the handler's return value. </dd></dl> </div> </div> <a class="anchor" id="gae382e39bdf0c5a02fca7da3944bece08"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">typedef struct <a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> <a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a></td> </tr> </table> </div><div class="memdoc"> <p>Opaque structure used for pollcb API </p> </div> </div> <a class="anchor" id="ga0c89b184cbe2337e44207f1ad245129b"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">typedef struct <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a></td> </tr> </table> </div><div class="memdoc"> <dl class="section see"><dt>See Also</dt><dd><a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> </dd></dl> </div> </div> <a class="anchor" id="ga680da1f10ac5ef75efc503a9d15b8906"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">typedef struct <a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> <a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a></td> </tr> </table> </div><div class="memdoc"> <p>Opaque structure used for pollset API </p> </div> </div> <h2 class="groupheader">Enumeration Type Documentation</h2> <a class="anchor" id="ga0a8549d84c1721788b102a4cc8b4b0f0"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">enum <a class="el" href="group__apr__poll.html#ga0a8549d84c1721788b102a4cc8b4b0f0">apr_datatype_e</a></td> </tr> </table> </div><div class="memdoc"> <p>Used in <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> to determine what the <a class="el" href="unionapr__descriptor.html">apr_descriptor</a> is </p> <table class="fieldtable"> <tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="gga0a8549d84c1721788b102a4cc8b4b0f0aeb85f43492052bf0788d31f6dd85a222"></a>APR_NO_DESC</em> </td><td class="fielddoc"> <p>nothing here </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="gga0a8549d84c1721788b102a4cc8b4b0f0a3629c5b3166fde91792f2f913fbd72f0"></a>APR_POLL_SOCKET</em> </td><td class="fielddoc"> <p>descriptor refers to a socket </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="gga0a8549d84c1721788b102a4cc8b4b0f0a8351d461bf66b706232962fd02e84202"></a>APR_POLL_FILE</em> </td><td class="fielddoc"> <p>descriptor refers to a file </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="gga0a8549d84c1721788b102a4cc8b4b0f0a413b387c7fe1ca7b096d46dfd9942fe5"></a>APR_POLL_LASTDESC</em> </td><td class="fielddoc"> <dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000033">Deprecated:</a></b></dt><dd>descriptor is the last one in the list </dd></dl> </td></tr> </table> </div> </div> <a class="anchor" id="gabe6f1238ea45e9425fa052e2788e4a29"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">enum <a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a></td> </tr> </table> </div><div class="memdoc"> <p>Pollset Methods </p> <table class="fieldtable"> <tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="ggabe6f1238ea45e9425fa052e2788e4a29ae68b155914b79d4a58519675dfc24d94"></a>APR_POLLSET_DEFAULT</em> </td><td class="fielddoc"> <p>Platform default poll method </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="ggabe6f1238ea45e9425fa052e2788e4a29aa6613bebee1abb348da2a153f91c738e"></a>APR_POLLSET_SELECT</em> </td><td class="fielddoc"> <p>Poll uses select method </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="ggabe6f1238ea45e9425fa052e2788e4a29a2722387d6523f8f02cec7c31a45966d4"></a>APR_POLLSET_KQUEUE</em> </td><td class="fielddoc"> <p>Poll uses kqueue method </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="ggabe6f1238ea45e9425fa052e2788e4a29aec66f6da923595ff0a6fa20f4bc41e46"></a>APR_POLLSET_PORT</em> </td><td class="fielddoc"> <p>Poll uses Solaris event port method </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="ggabe6f1238ea45e9425fa052e2788e4a29a142ebdcab58ccfabd5d964ff3ab476ab"></a>APR_POLLSET_EPOLL</em> </td><td class="fielddoc"> <p>Poll uses epoll method </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="ggabe6f1238ea45e9425fa052e2788e4a29aa8c0b4c036644ea4518f8d7c2fd4fe8e"></a>APR_POLLSET_POLL</em> </td><td class="fielddoc"> <p>Poll uses poll method </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="ggabe6f1238ea45e9425fa052e2788e4a29ace0288893b2db65847536c41c0048e82"></a>APR_POLLSET_AIO_MSGQ</em> </td><td class="fielddoc"> <p>Poll uses z/OS asio method </p> </td></tr> </table> </div> </div> <h2 class="groupheader">Function Documentation</h2> <a class="anchor" id="gad1d8a1ccd14952be6da5f272ca8dda76"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_poll </td> <td>(</td> <td class="paramtype"><a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> * </td> <td class="paramname"><em>aprset</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_int32_t </td> <td class="paramname"><em>numsock</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_int32_t * </td> <td class="paramname"><em>nsds</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__time.html#gaae2129185a395cc393f76fabf4f43e47">apr_interval_time_t</a> </td> <td class="paramname"><em>timeout</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Poll the descriptors in the poll structure </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">aprset</td><td>The poll structure we will be using. </td></tr> <tr><td class="paramname">numsock</td><td>The number of descriptors we are polling </td></tr> <tr><td class="paramname">nsds</td><td>The number of descriptors signalled (output parameter) </td></tr> <tr><td class="paramname">timeout</td><td>The amount of time in microseconds to wait. This is a maximum, not a minimum. If a descriptor is signalled, the function will return before this time. If timeout is negative, the function will block until a descriptor is signalled or until <a class="el" href="group__apr__poll.html#gac5e86828143e169e18b2a6eab94be531">apr_pollset_wakeup()</a> has been called. </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>The number of descriptors signalled is returned in the third argument. This is a blocking call, and it will not return until either a descriptor has been signalled or the timeout has expired. </dd> <dd> The rtnevents field in the <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> array will only be filled- in if the return value is APR_SUCCESS. </dd></dl> </div> </div> <a class="anchor" id="ga5d64867d7a3abd53d3765b4b47cf774f"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const char* apr_poll_method_defname </td> <td>(</td> <td class="paramtype">void </td> <td class="paramname"></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Return a printable representation of the default pollset method (APR_POLLSET_DEFAULT). </p> </div> </div> <a class="anchor" id="ga8fab02dfa803d911dae98656fac7a2c8"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollcb_add </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> * </td> <td class="paramname"><em>pollcb</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> * </td> <td class="paramname"><em>descriptor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Add a socket or file descriptor to a pollcb </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollcb</td><td>The pollcb to which to add the descriptor </td></tr> <tr><td class="paramname">descriptor</td><td>The descriptor to add </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If you set client_data in the descriptor, that value will be returned in the client_data field whenever this descriptor is signalled in <a class="el" href="group__apr__poll.html#ga11765d1b27e2f621a8dcd2c40f0e259c">apr_pollcb_poll()</a>. </dd> <dd> Unlike the apr_pollset API, the descriptor is not copied, and users must retain the memory used by descriptor, as the same pointer will be returned to them from apr_pollcb_poll. </dd> <dd> Do not add the same socket or file descriptor to the same pollcb multiple times, even if the requested events differ for the different calls to <a class="el" href="group__apr__poll.html#ga8fab02dfa803d911dae98656fac7a2c8">apr_pollcb_add()</a>. If the events of interest for a descriptor change, you must first remove the descriptor from the pollcb with <a class="el" href="group__apr__poll.html#gad004b778a14d6bcc4e48a10e5af729d8">apr_pollcb_remove()</a>, then add it again specifying all requested events. </dd></dl> </div> </div> <a class="anchor" id="ga76c33736268d57fca503790711d6d04e"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollcb_create </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> ** </td> <td class="paramname"><em>pollcb</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>size</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td> <td class="paramname"><em>p</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>flags</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Set up a pollcb object </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollcb</td><td>The pointer in which to return the newly created object </td></tr> <tr><td class="paramname">size</td><td>The maximum number of descriptors that a single _poll can return. </td></tr> <tr><td class="paramname">p</td><td>The pool from which to allocate the pollcb </td></tr> <tr><td class="paramname">flags</td><td>Optional flags to modify the operation of the pollcb.</td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If flags contains APR_POLLSET_WAKEABLE, then a pollcb is created with an additional internal pipe object used for the <a class="el" href="group__apr__poll.html#gacfc4c9e2dd39423b6a29b3a2aacb9bf1">apr_pollcb_wakeup()</a> call. The actual size of pollcb is in that case <em>size</em> + 1. </dd> <dd> Pollcb is only supported on some platforms; the <a class="el" href="group__apr__poll.html#ga76c33736268d57fca503790711d6d04e">apr_pollcb_create()</a> call will fail with APR_ENOTIMPL on platforms where it is not supported. </dd></dl> </div> </div> <a class="anchor" id="ga2ebdd0cba2d3b8333c46ee48170f8e90"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollcb_create_ex </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> ** </td> <td class="paramname"><em>pollcb</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>size</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td> <td class="paramname"><em>p</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>flags</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a> </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Set up a pollcb object </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollcb</td><td>The pointer in which to return the newly created object </td></tr> <tr><td class="paramname">size</td><td>The maximum number of descriptors that a single _poll can return. </td></tr> <tr><td class="paramname">p</td><td>The pool from which to allocate the pollcb </td></tr> <tr><td class="paramname">flags</td><td>Optional flags to modify the operation of the pollcb. </td></tr> <tr><td class="paramname">method</td><td>Poll method to use. See <a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a>. If this method cannot be used, the default method will be used unless the APR_POLLSET_NODEFAULT flag has been specified.</td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If flags contains APR_POLLSET_WAKEABLE, then a pollcb is created with an additional internal pipe object used for the <a class="el" href="group__apr__poll.html#gacfc4c9e2dd39423b6a29b3a2aacb9bf1">apr_pollcb_wakeup()</a> call. The actual size of pollcb is in that case <em>size</em> + 1. </dd> <dd> Pollcb is only supported on some platforms; the <a class="el" href="group__apr__poll.html#ga2ebdd0cba2d3b8333c46ee48170f8e90">apr_pollcb_create_ex()</a> call will fail with APR_ENOTIMPL on platforms where it is not supported. </dd></dl> </div> </div> <a class="anchor" id="ga489123191ad62119d111a23b3eb9f97f"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const char* apr_pollcb_method_name </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> * </td> <td class="paramname"><em>pollcb</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Return a printable representation of the pollcb method. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollcb</td><td>The pollcb to use </td></tr> </table> </dd> </dl> </div> </div> <a class="anchor" id="ga11765d1b27e2f621a8dcd2c40f0e259c"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollcb_poll </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> * </td> <td class="paramname"><em>pollcb</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__time.html#gaae2129185a395cc393f76fabf4f43e47">apr_interval_time_t</a> </td> <td class="paramname"><em>timeout</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gad440412b52e12fcfddfdd5b1618359e5">apr_pollcb_cb_t</a> </td> <td class="paramname"><em>func</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void * </td> <td class="paramname"><em>baton</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Block for activity on the descriptor(s) in a pollcb </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollcb</td><td>The pollcb to use </td></tr> <tr><td class="paramname">timeout</td><td>The amount of time in microseconds to wait. This is a maximum, not a minimum. If a descriptor is signalled, the function will return before this time. If timeout is negative, the function will block until a descriptor is signalled or until <a class="el" href="group__apr__poll.html#gacfc4c9e2dd39423b6a29b3a2aacb9bf1">apr_pollcb_wakeup()</a> has been called. </td></tr> <tr><td class="paramname">func</td><td>Callback function to call for each active descriptor. </td></tr> <tr><td class="paramname">baton</td><td>Opaque baton passed to the callback function. </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>Multiple signalled conditions for the same descriptor may be reported in one or more calls to the callback function, depending on the implementation. </dd> <dd> APR_EINTR will be returned if the pollset has been created with APR_POLLSET_WAKEABLE and <a class="el" href="group__apr__poll.html#gacfc4c9e2dd39423b6a29b3a2aacb9bf1">apr_pollcb_wakeup()</a> has been called while waiting for activity. </dd></dl> </div> </div> <a class="anchor" id="gad004b778a14d6bcc4e48a10e5af729d8"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollcb_remove </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> * </td> <td class="paramname"><em>pollcb</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> * </td> <td class="paramname"><em>descriptor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Remove a descriptor from a pollcb </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollcb</td><td>The pollcb from which to remove the descriptor </td></tr> <tr><td class="paramname">descriptor</td><td>The descriptor to remove </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If the descriptor is not found, APR_NOTFOUND is returned. </dd> <dd> <a class="el" href="group__apr__poll.html#gad004b778a14d6bcc4e48a10e5af729d8">apr_pollcb_remove()</a> cannot be used to remove a subset of requested events for a descriptor. The reqevents field in the <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> parameter must contain the same value when removing as when adding. </dd></dl> </div> </div> <a class="anchor" id="gacfc4c9e2dd39423b6a29b3a2aacb9bf1"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollcb_wakeup </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gae382e39bdf0c5a02fca7da3944bece08">apr_pollcb_t</a> * </td> <td class="paramname"><em>pollcb</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Interrupt the blocked <a class="el" href="group__apr__poll.html#ga11765d1b27e2f621a8dcd2c40f0e259c">apr_pollcb_poll()</a> call. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollcb</td><td>The pollcb to use </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If the pollcb was not created with APR_POLLSET_WAKEABLE the return value is APR_EINIT. </dd></dl> </div> </div> <a class="anchor" id="ga4ec50bf9a11c6b60927c51b81412f5b9"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollset_add </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> * </td> <td class="paramname"><em>pollset</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> * </td> <td class="paramname"><em>descriptor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Add a socket or file descriptor to a pollset </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pollset to which to add the descriptor </td></tr> <tr><td class="paramname">descriptor</td><td>The descriptor to add </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If you set client_data in the descriptor, that value will be returned in the client_data field whenever this descriptor is signalled in <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a>. </dd> <dd> If the pollset has been created with APR_POLLSET_THREADSAFE and thread T1 is blocked in a call to <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a> for this same pollset that is being modified via <a class="el" href="group__apr__poll.html#ga4ec50bf9a11c6b60927c51b81412f5b9">apr_pollset_add()</a> in thread T2, the currently executing <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a> call in T1 will either: (1) automatically include the newly added descriptor in the set of descriptors it is watching or (2) return immediately with APR_EINTR. Option (1) is recommended, but option (2) is allowed for implementations where option (1) is impossible or impractical. </dd> <dd> If the pollset has been created with APR_POLLSET_NOCOPY, the <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> structure referenced by descriptor will not be copied and must have a lifetime at least as long as the pollset. </dd> <dd> Do not add the same socket or file descriptor to the same pollset multiple times, even if the requested events differ for the different calls to <a class="el" href="group__apr__poll.html#ga4ec50bf9a11c6b60927c51b81412f5b9">apr_pollset_add()</a>. If the events of interest for a descriptor change, you must first remove the descriptor from the pollset with <a class="el" href="group__apr__poll.html#ga3c99c06e142d6b6b789eeb6086122e3a">apr_pollset_remove()</a>, then add it again specifying all requested events. </dd></dl> </div> </div> <a class="anchor" id="ga4ca4056a19daee8fe94ddba100fe2326"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollset_create </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> ** </td> <td class="paramname"><em>pollset</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>size</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td> <td class="paramname"><em>p</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>flags</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Set up a pollset object </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pointer in which to return the newly created object </td></tr> <tr><td class="paramname">size</td><td>The maximum number of descriptors that this pollset can hold </td></tr> <tr><td class="paramname">p</td><td>The pool from which to allocate the pollset </td></tr> <tr><td class="paramname">flags</td><td>Optional flags to modify the operation of the pollset.</td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If flags contains APR_POLLSET_THREADSAFE, then a pollset is created on which it is safe to make concurrent calls to <a class="el" href="group__apr__poll.html#ga4ec50bf9a11c6b60927c51b81412f5b9">apr_pollset_add()</a>, <a class="el" href="group__apr__poll.html#ga3c99c06e142d6b6b789eeb6086122e3a">apr_pollset_remove()</a> and <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a> from separate threads. This feature is only supported on some platforms; the <a class="el" href="group__apr__poll.html#ga4ca4056a19daee8fe94ddba100fe2326">apr_pollset_create()</a> call will fail with APR_ENOTIMPL on platforms where it is not supported. </dd> <dd> If flags contains APR_POLLSET_WAKEABLE, then a pollset is created with an additional internal pipe object used for the <a class="el" href="group__apr__poll.html#gac5e86828143e169e18b2a6eab94be531">apr_pollset_wakeup()</a> call. The actual size of pollset is in that case <em>size</em> + 1. This feature is only supported on some platforms; the <a class="el" href="group__apr__poll.html#ga4ca4056a19daee8fe94ddba100fe2326">apr_pollset_create()</a> call will fail with APR_ENOTIMPL on platforms where it is not supported. </dd> <dd> If flags contains APR_POLLSET_NOCOPY, then the <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> structures passed to <a class="el" href="group__apr__poll.html#ga4ec50bf9a11c6b60927c51b81412f5b9">apr_pollset_add()</a> are not copied and must have a lifetime at least as long as the pollset. </dd> <dd> Some poll methods (including APR_POLLSET_KQUEUE, APR_POLLSET_PORT, and APR_POLLSET_EPOLL) do not have a fixed limit on the size of the pollset. For these methods, the size parameter controls the maximum number of descriptors that will be returned by a single call to <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a>. </dd></dl> </div> </div> <a class="anchor" id="ga9448a2d756868aa1c6dbc9726a2e32b5"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollset_create_ex </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> ** </td> <td class="paramname"><em>pollset</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>size</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__pools.html#gaf137f28edcf9a086cd6bc36c20d7cdfb">apr_pool_t</a> * </td> <td class="paramname"><em>p</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_uint32_t </td> <td class="paramname"><em>flags</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a> </td> <td class="paramname"><em>method</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Set up a pollset object </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pointer in which to return the newly created object </td></tr> <tr><td class="paramname">size</td><td>The maximum number of descriptors that this pollset can hold </td></tr> <tr><td class="paramname">p</td><td>The pool from which to allocate the pollset </td></tr> <tr><td class="paramname">flags</td><td>Optional flags to modify the operation of the pollset. </td></tr> <tr><td class="paramname">method</td><td>Poll method to use. See <a class="el" href="group__apr__poll.html#gabe6f1238ea45e9425fa052e2788e4a29">apr_pollset_method_e</a>. If this method cannot be used, the default method will be used unless the APR_POLLSET_NODEFAULT flag has been specified.</td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If flags contains APR_POLLSET_THREADSAFE, then a pollset is created on which it is safe to make concurrent calls to <a class="el" href="group__apr__poll.html#ga4ec50bf9a11c6b60927c51b81412f5b9">apr_pollset_add()</a>, <a class="el" href="group__apr__poll.html#ga3c99c06e142d6b6b789eeb6086122e3a">apr_pollset_remove()</a> and <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a> from separate threads. This feature is only supported on some platforms; the <a class="el" href="group__apr__poll.html#ga9448a2d756868aa1c6dbc9726a2e32b5">apr_pollset_create_ex()</a> call will fail with APR_ENOTIMPL on platforms where it is not supported. </dd> <dd> If flags contains APR_POLLSET_WAKEABLE, then a pollset is created with additional internal pipe object used for the <a class="el" href="group__apr__poll.html#gac5e86828143e169e18b2a6eab94be531">apr_pollset_wakeup()</a> call. The actual size of pollset is in that case size + 1. This feature is only supported on some platforms; the <a class="el" href="group__apr__poll.html#ga9448a2d756868aa1c6dbc9726a2e32b5">apr_pollset_create_ex()</a> call will fail with APR_ENOTIMPL on platforms where it is not supported. </dd> <dd> If flags contains APR_POLLSET_NOCOPY, then the <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> structures passed to <a class="el" href="group__apr__poll.html#ga4ec50bf9a11c6b60927c51b81412f5b9">apr_pollset_add()</a> are not copied and must have a lifetime at least as long as the pollset. </dd> <dd> Some poll methods (including APR_POLLSET_KQUEUE, APR_POLLSET_PORT, and APR_POLLSET_EPOLL) do not have a fixed limit on the size of the pollset. For these methods, the size parameter controls the maximum number of descriptors that will be returned by a single call to <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a>. </dd></dl> </div> </div> <a class="anchor" id="gaa06c538d3fea9d860374043aff9450b2"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollset_destroy </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> * </td> <td class="paramname"><em>pollset</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Destroy a pollset object </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pollset to destroy </td></tr> </table> </dd> </dl> </div> </div> <a class="anchor" id="ga942ebbcc17d27911da86e1bd5c7a592e"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const char* apr_pollset_method_name </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> * </td> <td class="paramname"><em>pollset</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Return a printable representation of the pollset method. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pollset to use </td></tr> </table> </dd> </dl> </div> </div> <a class="anchor" id="ga6b31d7b3a7b2d356370403dd2b79ecf3"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollset_poll </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> * </td> <td class="paramname"><em>pollset</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__apr__time.html#gaae2129185a395cc393f76fabf4f43e47">apr_interval_time_t</a> </td> <td class="paramname"><em>timeout</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_int32_t * </td> <td class="paramname"><em>num</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> ** </td> <td class="paramname"><em>descriptors</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Block for activity on the descriptor(s) in a pollset </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pollset to use </td></tr> <tr><td class="paramname">timeout</td><td>The amount of time in microseconds to wait. This is a maximum, not a minimum. If a descriptor is signalled, the function will return before this time. If timeout is negative, the function will block until a descriptor is signalled or until <a class="el" href="group__apr__poll.html#gac5e86828143e169e18b2a6eab94be531">apr_pollset_wakeup()</a> has been called. </td></tr> <tr><td class="paramname">num</td><td>Number of signalled descriptors (output parameter) </td></tr> <tr><td class="paramname">descriptors</td><td>Array of signalled descriptors (output parameter) </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>APR_EINTR will be returned if the pollset has been created with APR_POLLSET_WAKEABLE, <a class="el" href="group__apr__poll.html#gac5e86828143e169e18b2a6eab94be531">apr_pollset_wakeup()</a> has been called while waiting for activity, and there were no signalled descriptors at the time of the wakeup call. </dd> <dd> Multiple signalled conditions for the same descriptor may be reported in one or more returned <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> structures, depending on the implementation. </dd></dl> </div> </div> <a class="anchor" id="ga3c99c06e142d6b6b789eeb6086122e3a"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollset_remove </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> * </td> <td class="paramname"><em>pollset</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> * </td> <td class="paramname"><em>descriptor</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Remove a descriptor from a pollset </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pollset from which to remove the descriptor </td></tr> <tr><td class="paramname">descriptor</td><td>The descriptor to remove </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If the descriptor is not found, APR_NOTFOUND is returned. </dd> <dd> If the pollset has been created with APR_POLLSET_THREADSAFE and thread T1 is blocked in a call to <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a> for this same pollset that is being modified via <a class="el" href="group__apr__poll.html#ga3c99c06e142d6b6b789eeb6086122e3a">apr_pollset_remove()</a> in thread T2, the currently executing <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a> call in T1 will either: (1) automatically exclude the newly added descriptor in the set of descriptors it is watching or (2) return immediately with APR_EINTR. Option (1) is recommended, but option (2) is allowed for implementations where option (1) is impossible or impractical. </dd> <dd> <a class="el" href="group__apr__poll.html#ga3c99c06e142d6b6b789eeb6086122e3a">apr_pollset_remove()</a> cannot be used to remove a subset of requested events for a descriptor. The reqevents field in the <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> parameter must contain the same value when removing as when adding. </dd></dl> </div> </div> <a class="anchor" id="gac5e86828143e169e18b2a6eab94be531"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__apr__errno.html#gaf76ee4543247e9fb3f3546203e590a6c">apr_status_t</a> apr_pollset_wakeup </td> <td>(</td> <td class="paramtype"><a class="el" href="group__apr__poll.html#ga680da1f10ac5ef75efc503a9d15b8906">apr_pollset_t</a> * </td> <td class="paramname"><em>pollset</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Interrupt the blocked <a class="el" href="group__apr__poll.html#ga6b31d7b3a7b2d356370403dd2b79ecf3">apr_pollset_poll()</a> call. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">pollset</td><td>The pollset to use </td></tr> </table> </dd> </dl> <dl class="section remark"><dt>Remarks</dt><dd>If the pollset was not created with APR_POLLSET_WAKEABLE the return value is APR_EINIT. </dd></dl> </div> </div> </div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.5 </small></address> </body> </html>
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