Imported MaNGOS revision 6767 from http://mangos.svn.sourceforge.net/svnroot/mangos/trunk/

src/framework/Policies/ThreadingModel.h

@@ -0,0 +1,127 @@
+/* 
+ * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef MANGOS_THREADINGMODEL_H
+#define MANGOS_THREADINGMODEL_H
+
+/**
+ * @class ThreadingModel<T>
+ *
+ */
+
+#include "Platform/Define.h"
+
+namespace MaNGOS
+{
+    inline void Guard(void *) {}
+
+    template<typename MUTEX> class MANGOS_DLL_DECL GeneralLock
+    {
+        public:
+            GeneralLock(MUTEX &m) : i_mutex(m)
+            {
+                i_mutex.acquire();
+            }
+
+            ~GeneralLock()
+            {
+                i_mutex.release();
+            }
+        private:
+            GeneralLock(const GeneralLock &);
+            GeneralLock& operator=(const GeneralLock &);
+            MUTEX &i_mutex;
+    };
+
+    template <class T>
+        class MANGOS_DLL_DECL SingleThreaded
+    {
+        public:
+
+            struct Lock                                     // empty object
+            {
+                Lock() {}
+                Lock(const T &) {}
+                Lock(const SingleThreaded<T> &)             // for single threaded we ignore this
+                {
+                }
+            };
+
+            typedef T VolatileType;
+    };
+
+    // object level lockable
+    template<class T, class MUTEX>
+        class MANGOS_DLL_DECL ObjectLevelLockable
+    {
+        public:
+            ObjectLevelLockable() : i_mtx() {}
+
+            friend class Lock;
+
+            class Lock
+            {
+                public:
+                    Lock(ObjectLevelLockable<T, MUTEX> &host) : i_lock(host.i_mtx)
+                    {
+                    }
+
+                private:
+                    GeneralLock<MUTEX> i_lock;
+            };
+
+            typedef volatile T VolatileType;
+
+        private:
+            // prevent the compiler creating a copy construct
+            ObjectLevelLockable(const ObjectLevelLockable<T, MUTEX> &);
+            ObjectLevelLockable<T, MUTEX>& operator=(const ObjectLevelLockable<T, MUTEX> &);
+
+            MUTEX i_mtx;
+    };
+
+    template<class T, class MUTEX>
+        class MANGOS_DLL_DECL ClassLevelLockable
+    {
+        public:
+            class Lock;
+            friend class Lock;
+            typedef volatile T VolatileType;
+
+            ClassLevelLockable() {}
+
+            class Lock
+            {
+                public:
+                    Lock(T& /*host*/) { ClassLevelLockable<T, MUTEX>::si_mtx.acquire(); }
+                    Lock(ClassLevelLockable<T, MUTEX> &) { ClassLevelLockable<T, MUTEX>::si_mtx.acquire(); }
+                    Lock() { ClassLevelLockable<T, MUTEX>::si_mtx.acquire(); }
+                    ~Lock() { ClassLevelLockable<T, MUTEX>::si_mtx.release(); }
+            };
+
+        private:
+            static MUTEX si_mtx;
+    };
+
+}
+
+template<class T, class MUTEX> MUTEX MaNGOS::ClassLevelLockable<T, MUTEX>::si_mtx;
+
+#define INSTANTIATE_CLASS_MUTEX(CTYPE,MUTEX) \
+    template class MANGOS_DLL_DECL MaNGOS::ClassLevelLockable<CTYPE, MUTEX >
+#endif