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<title>Apache Portable Runtime: Poll Routines</title>
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<h1>Poll Routines</h1><table border=0 cellpadding=0 cellspacing=0>
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<tr><td colspan=2><br><h2>Data Structures</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>union &nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="unionapr__descriptor.html">apr_descriptor</a></td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>struct &nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a></td></tr>

<tr><td colspan=2><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>#define&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga8">APR_POLLIN</a>&nbsp;&nbsp;&nbsp;0x001     /**&lt; Can read without blocking */</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>#define&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga9">APR_POLLPRI</a>&nbsp;&nbsp;&nbsp;0x002     /**&lt; Priority data available */</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>#define&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga10">APR_POLLOUT</a>&nbsp;&nbsp;&nbsp;0x004     /**&lt; Can write without blocking */</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>#define&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga11">APR_POLLERR</a>&nbsp;&nbsp;&nbsp;0x010     /**&lt; Pending error */</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>#define&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga12">APR_POLLHUP</a>&nbsp;&nbsp;&nbsp;0x020     /**&lt; Hangup occurred */</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>#define&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga13">APR_POLLNVAL</a>&nbsp;&nbsp;&nbsp;0x040     /**&lt; Descriptior invalid */</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>#define&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga14">APR_POLLSET_THREADSAFE</a>&nbsp;&nbsp;&nbsp;0x001 /**&lt; Adding or Removing a Descriptor is thread safe */</td></tr>

<tr><td colspan=2><br><h2>Typedefs</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>typedef <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga0">apr_pollfd_t</a></td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top>typedef <a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a></td></tr>

<tr><td colspan=2><br><h2>Enumerations</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>enum &nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga15">apr_datatype_e</a> { <a class="el" href="group__apr__poll.html#gga15a9">APR_NO_DESC</a>, 
<a class="el" href="group__apr__poll.html#gga15a10">APR_POLL_SOCKET</a>, 
<a class="el" href="group__apr__poll.html#gga15a11">APR_POLL_FILE</a>, 
<a class="el" href="group__apr__poll.html#gga15a12">APR_POLL_LASTDESC</a>
 }</td></tr>

<tr><td colspan=2><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="group__apr__errno.html#ga0">apr_status_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga2">apr_pollset_create</a> (<a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a> **pollset, apr_uint32_t size, <a class="el" href="group__apr__pools.html#ga0">apr_pool_t</a> *p, apr_uint32_t flags)</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="group__apr__errno.html#ga0">apr_status_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga3">apr_pollset_destroy</a> (<a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a> *pollset)</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="group__apr__errno.html#ga0">apr_status_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga4">apr_pollset_add</a> (<a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a> *pollset, const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="group__apr__errno.html#ga0">apr_status_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga5">apr_pollset_remove</a> (<a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a> *pollset, const <a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> *descriptor)</td></tr>

<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="group__apr__errno.html#ga0">apr_status_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga6">apr_pollset_poll</a> (<a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a> *pollset, <a class="el" href="group__apr__time.html#ga3">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><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="group__apr__errno.html#ga0">apr_status_t</a>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="group__apr__poll.html#ga7">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#ga3">apr_interval_time_t</a> timeout)</td></tr>

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<hr><h2>Define Documentation</h2>
<a class="anchor" name="ga11" doxytag="apr_poll.h::APR_POLLERR" ></a><p>
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          <td class="md" nowrap valign="top"> #define APR_POLLERR&nbsp;&nbsp;&nbsp;0x010     /**&lt; Pending error */          </td>
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Pending error     </td>
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<a class="anchor" name="ga12" doxytag="apr_poll.h::APR_POLLHUP" ></a><p>
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          <td class="md" nowrap valign="top"> #define APR_POLLHUP&nbsp;&nbsp;&nbsp;0x020     /**&lt; Hangup occurred */          </td>
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Hangup occurred     </td>
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<a class="anchor" name="ga8" doxytag="apr_poll.h::APR_POLLIN" ></a><p>
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          <td class="md" nowrap valign="top"> #define APR_POLLIN&nbsp;&nbsp;&nbsp;0x001     /**&lt; Can read without blocking */          </td>
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Can read without blocking     </td>
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<a class="anchor" name="ga13" doxytag="apr_poll.h::APR_POLLNVAL" ></a><p>
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          <td class="md" nowrap valign="top"> #define APR_POLLNVAL&nbsp;&nbsp;&nbsp;0x040     /**&lt; Descriptior invalid */          </td>
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Descriptior invalid     </td>
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<a class="anchor" name="ga10" doxytag="apr_poll.h::APR_POLLOUT" ></a><p>
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          <td class="md" nowrap valign="top"> #define APR_POLLOUT&nbsp;&nbsp;&nbsp;0x004     /**&lt; Can write without blocking */          </td>
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Can write without blocking     </td>
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<a class="anchor" name="ga9" doxytag="apr_poll.h::APR_POLLPRI" ></a><p>
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          <td class="md" nowrap valign="top"> #define APR_POLLPRI&nbsp;&nbsp;&nbsp;0x002     /**&lt; Priority data available */          </td>
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Priority data available     </td>
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<a class="anchor" name="ga14" doxytag="apr_poll.h::APR_POLLSET_THREADSAFE" ></a><p>
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          <td class="md" nowrap valign="top"> #define APR_POLLSET_THREADSAFE&nbsp;&nbsp;&nbsp;0x001 /**&lt; Adding or Removing a Descriptor is thread safe */          </td>
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Adding or Removing a Descriptor is thread safe     </td>
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<hr><h2>Typedef Documentation</h2>
<a class="anchor" name="ga0" doxytag="apr_poll.h::apr_pollfd_t" ></a><p>
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          <td class="md" nowrap valign="top"> 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>
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<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="structapr__pollfd__t.html">apr_pollfd_t</a> </dd></dl>
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<a class="anchor" name="ga1" doxytag="apr_poll.h::apr_pollset_t" ></a><p>
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          <td class="md" nowrap valign="top"> typedef struct <a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a> <a class="el" href="group__apr__poll.html#ga1">apr_pollset_t</a>          </td>
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Opaque structure used for pollset API     </td>
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<hr><h2>Enumeration Type Documentation</h2>
<a class="anchor" name="ga15" doxytag="apr_poll.h::apr_datatype_e" ></a><p>
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          <td class="md" nowrap valign="top"> enum <a class="el" href="group__apr__poll.html#ga15">apr_datatype_e</a>          </td>
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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 <dl compact><dt><b>Enumeration values: </b></dt><dd>
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<tr><td valign=top><em><a class="anchor" name="gga15a9" doxytag="APR_NO_DESC" ></a>APR_NO_DESC</em>&nbsp;</td><td>
nothing here </td></tr>
<tr><td valign=top><em><a class="anchor" name="gga15a10" doxytag="APR_POLL_SOCKET" ></a>APR_POLL_SOCKET</em>&nbsp;</td><td>
descriptor refers to a socket </td></tr>
<tr><td valign=top><em><a class="anchor" name="gga15a11" doxytag="APR_POLL_FILE" ></a>APR_POLL_FILE</em>&nbsp;</td><td>
descriptor refers to a file </td></tr>
<tr><td valign=top><em><a class="anchor" name="gga15a12" doxytag="APR_POLL_LASTDESC" ></a>APR_POLL_LASTDESC</em>&nbsp;</td><td>
descriptor is the last one in the list </td></tr>
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