Add some thread classes and fix SharedData with a simple mutex adapter

beast/thread/SharedMutexAdapter.h

@@ -0,0 +1,65 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef BEAST_THREAD_SHAREDMUTEXADAPTER_H_INCLUDED
+#define BEAST_THREAD_SHAREDMUTEXADAPTER_H_INCLUDED
+
+namespace beast
+{
+   
+/** Adapts a regular Lockable to conform to the SharedMutex concept.
+    Shared locks become unique locks with this interface. Two threads may not
+    simultaneously acquire ownership of the lock. Typically the Mutex template
+    parameter will be a CriticalSection.
+*/
+template <class Mutex>
+class SharedMutexAdapter
+{
+public:
+    typedef Mutex MutexType;
+    typedef LockGuard <SharedMutexAdapter> LockGuardType;
+    typedef SharedLockGuard <SharedMutexAdapter> SharedLockGuardType;
+    
+    void lock() const
+    {
+        m_mutex.lock();
+    }
+
+    void unlock() const
+    {
+        m_mutex.unlock();
+    }
+
+    void lock_shared() const
+    {
+        m_mutex.lock();
+    }
+
+    void unlock_shared() const
+    {
+        m_mutex.unlock();
+    }
+
+private:
+    Mutex mutable m_mutex;
+};
+
+}
+
+#endif