reSIProcate/rutil  9694
RWMutex.hxx
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00001 #if !defined(RESIP_RWMUTEX_HXX)
00002 #define RESIP_RWMUTEX_HXX 
00003 
00004 static const char* const resipRWMutex_hxx_Version =
00005    "$Id: RWMutex.hxx,v 1.3 2003/06/02 20:52:32 ryker Exp $";
00006 
00007 #include "Lockable.hxx"
00008 #include "Mutex.hxx"
00009 #include "Condition.hxx"
00010 
00011 namespace resip
00012 {
00013 
00029 class RWMutex : public Lockable
00030 {
00031     public:
00032       RWMutex();
00033       ~RWMutex();
00034       void readlock();
00035       void writelock();
00036       void lock();
00037       void unlock();
00038       unsigned int readerCount() const;
00039       unsigned int pendingWriterCount() const;
00040       
00041    private:
00042       Mutex mMutex;
00043       Condition mReadCondition;
00044       Condition mPendingWriteCondition;
00045       unsigned int mReaderCount;
00046       bool mWriterHasLock;
00047       unsigned int mPendingWriterCount;
00048 };
00049 
00050 }
00051 
00052 #endif 
00053 
00054 /* ====================================================================
00055  * The Vovida Software License, Version 1.0 
00056  * 
00057  * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
00058  * 
00059  * Redistribution and use in source and binary forms, with or without
00060  * modification, are permitted provided that the following conditions
00061  * are met:
00062  * 
00063  * 1. Redistributions of source code must retain the above copyright
00064  *    notice, this list of conditions and the following disclaimer.
00065  * 
00066  * 2. Redistributions in binary form must reproduce the above copyright
00067  *    notice, this list of conditions and the following disclaimer in
00068  *    the documentation and/or other materials provided with the
00069  *    distribution.
00070  * 
00071  * 3. The names "VOCAL", "Vovida Open Communication Application Library",
00072  *    and "Vovida Open Communication Application Library (VOCAL)" must
00073  *    not be used to endorse or promote products derived from this
00074  *    software without prior written permission. For written
00075  *    permission, please contact vocal@vovida.org.
00076  *
00077  * 4. Products derived from this software may not be called "VOCAL", nor
00078  *    may "VOCAL" appear in their name, without prior written
00079  *    permission of Vovida Networks, Inc.
00080  * 
00081  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
00082  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00083  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
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00085  * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
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00093  * DAMAGE.
00094  * 
00095  * ====================================================================
00096  * 
00097  * This software consists of voluntary contributions made by Vovida
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00102  */