📄 classpreadwritemutex.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>PReadWriteMutex class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> </center><hr><h1>PReadWriteMutex Class Reference</h1><code>#include <<a class="el" href="syncthrd_8h-source.html">syncthrd.h</a>></code><p><p>Inheritance diagram for PReadWriteMutex:<p><center><img src="classPReadWriteMutex.png" usemap="#PReadWriteMutex_map" border="0" alt=""></center><map name="PReadWriteMutex_map"><area href="classPObject.html" alt="PObject" shape="rect" coords="0,0,112,24"></map><a href="classPReadWriteMutex-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0><tr><td></td></tr><tr><td colspan=2><br><h2>Public Methods</h2></td></tr><tr><td colspan="2"><div class="groupHeader">Construction</div></td></tr><tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#z419_0">PReadWriteMutex</a> ()</td></tr><tr><td colspan="2"><div class="groupHeader">Operations</div></td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#z421_0">StartRead</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#z421_1">EndRead</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#z421_2">StartWrite</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#z421_3">EndWrite</a> ()</td></tr><tr><td colspan=2><br><h2>Protected Methods</h2></td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPReadWriteMutex_1_1Nest.html">Nest</a> * </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#b0">GetNest</a> () const</td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPReadWriteMutex_1_1Nest.html">Nest</a> & </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#b1">StartNest</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#b2">EndNest</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#b3">InternalStartRead</a> ()</td></tr><tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#b4">InternalEndRead</a> ()</td></tr><tr><td colspan=2><br><h2>Protected Attributes</h2></td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPSemaphore.html">PSemaphore</a> </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n0">readerSemaphore</a></td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPMutex.html">PMutex</a> </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n1">readerMutex</a></td></tr><tr><td nowrap align=right valign=top>unsigned </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n2">readerCount</a></td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPMutex.html">PMutex</a> </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n3">starvationPreventer</a></td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPSemaphore.html">PSemaphore</a> </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n4">writerSemaphore</a></td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPMutex.html">PMutex</a> </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n5">writerMutex</a></td></tr><tr><td nowrap align=right valign=top>unsigned </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n6">writerCount</a></td></tr><tr><td nowrap align=right valign=top>PDictionary< <a class="el" href="classPOrdinalKey.html">POrdinalKey</a>,<br> <a class="el" href="classPReadWriteMutex_1_1Nest.html">Nest</a> > </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n7">nestedThreads</a></td></tr><tr><td nowrap align=right valign=top><a class="el" href="classPMutex.html">PMutex</a> </td><td valign=bottom><a class="el" href="classPReadWriteMutex.html#n8">nestingMutex</a></td></tr></table><hr><a name="_details"></a><h2>Detailed Description</h2>This class defines a thread synchonisation object.<p>This is a special type of mutual exclusion, where the excluded area may have multiple read threads but only one write thread and the read threads are blocked on write as well. <p><hr><h2>Constructor & Destructor Documentation</h2><a name="z419_0" doxytag="PReadWriteMutex::PReadWriteMutex"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> PReadWriteMutex::PReadWriteMutex </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p> </td> </tr></table><hr><h2>Member Function Documentation</h2><a name="b2" doxytag="PReadWriteMutex::EndNest"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void PReadWriteMutex::EndNest </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p> </td> </tr></table><a name="z421_1" doxytag="PReadWriteMutex::EndRead"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void PReadWriteMutex::EndRead </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>This function attempts to release the mutex for reading. </td> </tr></table><a name="z421_3" doxytag="PReadWriteMutex::EndWrite"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void PReadWriteMutex::EndWrite </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>This function attempts to release the mutex for writing. Note, if the same thread had a read lock when the <a class="el" href="classPReadWriteMutex.html#z421_2">StartWrite()</a> was called which has not yet been released by an <a class="el" href="classPReadWriteMutex.html#z421_1">EndRead()</a> call then this will reacquire the read lock.<p>It should also be noted that a consequence of this is that another thread may acquire the write lock before the thread that regains the read lock. Thus it is impossibly to go straight from a write lock to read lock without the possiblility of the object being changed and application logic should take this into account. </td> </tr></table><a name="b0" doxytag="PReadWriteMutex::GetNest"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> <a class="el" href="classPReadWriteMutex_1_1Nest.html">Nest</a>* PReadWriteMutex::GetNest </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p> </td> </tr></table><a name="b4" doxytag="PReadWriteMutex::InternalEndRead"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void PReadWriteMutex::InternalEndRead </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p> </td> </tr></table><a name="b3" doxytag="PReadWriteMutex::InternalStartRead"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> void PReadWriteMutex::InternalStartRead </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p> </td> </tr></table><a name="b1" doxytag="PReadWriteMutex::StartNest"></a><p><table width="100%" cellpadding="2" cellspacing="0" border="0"> <tr> <td class="md"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> <a class="el" href="classPReadWriteMutex_1_1Nest.html">Nest</a>& PReadWriteMutex::StartNest </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top">) </td> <td class="md" nowrap><code> [protected]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -