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<h1>ucc::ConditionalAccess Class Reference</h1><!-- doxytag: class="ucc::ConditionalAccess" --><!-- doxytag: inherits="ucc::Conditional" -->
<p>The conditional rw seperates scheduling for optizming behavior or rw locks.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="a00208_source.html">thread.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for ucc::ConditionalAccess:</div>
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<div class="center"><img src="a00373.png" border="0" usemap="#ucc_1_1_conditional_access_inherit__map" alt="Inheritance graph"/></div>
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Collaboration diagram for ucc::ConditionalAccess:</div>
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<div class="center"><img src="a00374.png" border="0" usemap="#ucc_1_1_conditional_access_coll__map" alt="Collaboration graph"/></div>
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<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a46436dd5ff53ca22b8d504409ecb7d87"></a><!-- doxytag: member="ucc::ConditionalAccess::access" ref="a46436dd5ff53ca22b8d504409ecb7d87" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a46436dd5ff53ca22b8d504409ecb7d87">access</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Access mode shared thread scheduling. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aae4efc6f4ca22b3871638cef56db38a7"></a><!-- doxytag: member="ucc::ConditionalAccess::commit" ref="aae4efc6f4ca22b3871638cef56db38a7" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#aae4efc6f4ca22b3871638cef56db38a7">commit</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Complete exclusive mode write scheduling. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ad5dfe5272ffd6d29c611f056c61c06aa"></a><!-- doxytag: member="ucc::ConditionalAccess::ConditionalAccess" ref="ad5dfe5272ffd6d29c611f056c61c06aa" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#ad5dfe5272ffd6d29c611f056c61c06aa">ConditionalAccess</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Initialize and construct conditional. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a40005638dfda66612293aca1ca9c2331">limit_sharing</a> (unsigned max)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Specify a maximum sharing (access) limit. <a href="#a40005638dfda66612293aca1ca9c2331"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a808998cdbbf86426abd0091947d14516"></a><!-- doxytag: member="ucc::ConditionalAccess::modify" ref="a808998cdbbf86426abd0091947d14516" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a808998cdbbf86426abd0091947d14516">modify</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="a00052.html" title="An exclusive locking protocol interface base.">Exclusive</a> mode write thread scheduling. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a51094b41fa291d5ad27770c84babed10"></a><!-- doxytag: member="ucc::ConditionalAccess::release" ref="a51094b41fa291d5ad27770c84babed10" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a51094b41fa291d5ad27770c84babed10">release</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Release access mode read scheduling. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a17e2c355b40fa2ef28a04befef869d56"></a><!-- doxytag: member="ucc::ConditionalAccess::~ConditionalAccess" ref="a17e2c355b40fa2ef28a04befef869d56" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a17e2c355b40fa2ef28a04befef869d56">~ConditionalAccess</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destroy conditional, release any blocked threads. <br/></td></tr>
<tr><td colspan="2"><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a48b517f42aede73318bbe5b19ca43443"></a><!-- doxytag: member="ucc::ConditionalAccess::broadcast" ref="a48b517f42aede73318bbe5b19ca43443" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a48b517f42aede73318bbe5b19ca43443">broadcast</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal the conditional to release all broadcast threads. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ad53d9f3e0db7765cd4afeadc98265c01"></a><!-- doxytag: member="ucc::ConditionalAccess::lock" ref="ad53d9f3e0db7765cd4afeadc98265c01" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#ad53d9f3e0db7765cd4afeadc98265c01">lock</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Lock the conditional's supporting mutex. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a69cf5d9cff15041a819deb22443e1798"></a><!-- doxytag: member="ucc::ConditionalAccess::signal" ref="a69cf5d9cff15041a819deb22443e1798" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a69cf5d9cff15041a819deb22443e1798">signal</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal the conditional to release one signalled thread. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a60e5c4ac86cc3e486f4853c9354426ed"></a><!-- doxytag: member="ucc::ConditionalAccess::unlock" ref="a60e5c4ac86cc3e486f4853c9354426ed" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a60e5c4ac86cc3e486f4853c9354426ed">unlock</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Unlock the conditional's supporting mutex. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ace5677f9ecf6fa3f2b2f7424e01185f7"></a><!-- doxytag: member="ucc::ConditionalAccess::waitBroadcast" ref="ace5677f9ecf6fa3f2b2f7424e01185f7" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#ace5677f9ecf6fa3f2b2f7424e01185f7">waitBroadcast</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Wait (block) until broadcast. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#aedf4a8a9ee107b55474883b8cf1d174f">waitBroadcast</a> (struct timespec *timeout)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for broadcast on timespec timeout. <a href="#aedf4a8a9ee107b55474883b8cf1d174f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#abe708c5fc0a0df2a410bda2f7212acc8">waitBroadcast</a> (<a class="el" href="a00201.html#af412159e5cef839836a5e7b19ee75d1c">timeout_t</a> timeout)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for broadcast on millisecond timeout. <a href="#abe708c5fc0a0df2a410bda2f7212acc8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a83d1ebcc1209f640996e43906d9207a9"></a><!-- doxytag: member="ucc::ConditionalAccess::waitSignal" ref="a83d1ebcc1209f640996e43906d9207a9" args="(void)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a83d1ebcc1209f640996e43906d9207a9">waitSignal</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Wait (block) until signalled. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a25af2998ebdd65f641208ae2f9b98454">waitSignal</a> (struct timespec *timeout)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for signal on timespec timeout. <a href="#a25af2998ebdd65f641208ae2f9b98454"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a2a77070edbf27598235188b88e810e51">waitSignal</a> (<a class="el" href="a00201.html#af412159e5cef839836a5e7b19ee75d1c">timeout_t</a> timeout)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for signal on millisecond timeout. <a href="#a2a77070edbf27598235188b88e810e51"></a><br/></td></tr>
<tr><td colspan="2"><h2>Static Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00041.html#a0312dd3986d22cbba971f0e265f43206">gettimeout</a> (<a class="el" href="a00201.html#af412159e5cef839836a5e7b19ee75d1c">timeout_t</a> timeout, struct timespec *hires)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convert a millisecond timeout into use for high resolution conditional timers. <a href="#a0312dd3986d22cbba971f0e265f43206"></a><br/></td></tr>
<tr><td colspan="2"><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a9ce351943db5d995e378405595619c65"></a><!-- doxytag: member="ucc::ConditionalAccess::pending" ref="a9ce351943db5d995e378405595619c65" args="" -->
unsigned </td><td class="memItemRight" valign="bottom"><b>pending</b></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0bb12eb225665b3a86c8d8dd8e0dac0a"></a><!-- doxytag: member="ucc::ConditionalAccess::sharing" ref="a0bb12eb225665b3a86c8d8dd8e0dac0a" args="" -->
unsigned </td><td class="memItemRight" valign="bottom"><b>sharing</b></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aec9c5be461c5d11c04d502ae067f866b"></a><!-- doxytag: member="ucc::ConditionalAccess::waiting" ref="aec9c5be461c5d11c04d502ae067f866b" args="" -->
unsigned </td><td class="memItemRight" valign="bottom"><b>waiting</b></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>The conditional rw seperates scheduling for optizming behavior or rw locks. </p>
<p>This varient of conditonal seperates scheduling read (broadcast wakeup) and write (signal wakeup) based threads. This is used to form generic rwlock's as well as the specialized condlock. </p>
<dl class="author"><dt><b>Author:</b></dt><dd>David Sugar <<a href="mailto:dyfet@gnutelephony.org">dyfet@gnutelephony.org</a>> </dd></dl>
<p>Definition at line <a class="el" href="a00208_source.html#l00210">210</a> of file <a class="el" href="a00208_source.html">thread.h</a>.</p>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a0312dd3986d22cbba971f0e265f43206"></a><!-- doxytag: member="ucc::ConditionalAccess::gettimeout" ref="a0312dd3986d22cbba971f0e265f43206" args="(timeout_t timeout, struct timespec *hires)" -->
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<td class="memname">static void ucc::ConditionalAccess::gettimeout </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00201.html#af412159e5cef839836a5e7b19ee75d1c">timeout_t</a> </td>
<td class="paramname"> <em>timeout</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">struct timespec * </td>
<td class="paramname"> <em>hires</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline, static, protected]</code></td>
</tr>
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</div>
<div class="memdoc">
<p>Convert a millisecond timeout into use for high resolution conditional timers. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>timeout</em> </td><td>to convert. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>hires</em> </td><td>timespec representation to fill. </td></tr>
</table>
</dd>
</dl>
<p>Reimplemented from <a class="el" href="a00040.html#aff4c078d6e84e0c273eb321e3c5d0cd6">ucc::Conditional</a>.</p>
<p>Definition at line <a class="el" href="a00208_source.html#l00255">255</a> of file <a class="el" href="a00208_source.html">thread.h</a>.</p>
</div>
</div>
<a class="anchor" id="a40005638dfda66612293aca1ca9c2331"></a><!-- doxytag: member="ucc::ConditionalAccess::limit_sharing" ref="a40005638dfda66612293aca1ca9c2331" args="(unsigned max)" -->
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<td class="memname">void ucc::ConditionalAccess::limit_sharing </td>
<td>(</td>
<td class="paramtype">unsigned </td>
<td class="paramname"> <em>max</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
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<div class="memdoc">
<p>Specify a maximum sharing (access) limit. </p>
<p>This can be used to detect locking errors, such as when aquiring locks that are not released. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>max</em> </td><td>sharing level. </td></tr>
</table>
</dd>
</dl>
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</div>
<a class="anchor" id="aedf4a8a9ee107b55474883b8cf1d174f"></a><!-- doxytag: member="ucc::ConditionalAccess::waitBroadcast" ref="aedf4a8a9ee107b55474883b8cf1d174f" args="(struct timespec *timeout)" -->
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<td class="memname">bool ucc::ConditionalAccess::waitBroadcast </td>
<td>(</td>
<td class="paramtype">struct timespec * </td>
<td class="paramname"> <em>timeout</em></td>
<td> ) </td>
<td><code> [protected]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for broadcast on timespec timeout. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>timeout</em> </td><td>as a high resolution timespec. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if signalled, false if timer expired. </dd></dl>
</div>
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<a class="anchor" id="abe708c5fc0a0df2a410bda2f7212acc8"></a><!-- doxytag: member="ucc::ConditionalAccess::waitBroadcast" ref="abe708c5fc0a0df2a410bda2f7212acc8" args="(timeout_t timeout)" -->
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<td class="memname">bool ucc::ConditionalAccess::waitBroadcast </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00201.html#af412159e5cef839836a5e7b19ee75d1c">timeout_t</a> </td>
<td class="paramname"> <em>timeout</em></td>
<td> ) </td>
<td><code> [protected]</code></td>
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<p><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for broadcast on millisecond timeout. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>timeout</em> </td><td>in milliseconds. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if signalled, false if timer expired. </dd></dl>
</div>
</div>
<a class="anchor" id="a25af2998ebdd65f641208ae2f9b98454"></a><!-- doxytag: member="ucc::ConditionalAccess::waitSignal" ref="a25af2998ebdd65f641208ae2f9b98454" args="(struct timespec *timeout)" -->
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<td class="memname">bool ucc::ConditionalAccess::waitSignal </td>
<td>(</td>
<td class="paramtype">struct timespec * </td>
<td class="paramname"> <em>timeout</em></td>
<td> ) </td>
<td><code> [protected]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for signal on timespec timeout. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>timeout</em> </td><td>as a high resolution timespec. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if signalled, false if timer expired. </dd></dl>
</div>
</div>
<a class="anchor" id="a2a77070edbf27598235188b88e810e51"></a><!-- doxytag: member="ucc::ConditionalAccess::waitSignal" ref="a2a77070edbf27598235188b88e810e51" args="(timeout_t timeout)" -->
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<td class="memname">bool ucc::ConditionalAccess::waitSignal </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00201.html#af412159e5cef839836a5e7b19ee75d1c">timeout_t</a> </td>
<td class="paramname"> <em>timeout</em></td>
<td> ) </td>
<td><code> [protected]</code></td>
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<p><a class="el" href="a00040.html" title="The conditional is a common base for other thread synchronizing classes.">Conditional</a> wait for signal on millisecond timeout. </p>
<dl><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>timeout</em> </td><td>in milliseconds. </td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>true if signalled, false if timer expired. </dd></dl>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>ucommon/<a class="el" href="a00208_source.html">thread.h</a></li>
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<hr class="footer"/><address style="text-align: right;"><small>Generated on Tue Jul 6 08:22:27 2010 for UCommon by
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.3 </small></address>
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