From 98c9825c49a1674f59eafb3253829ca7d5cac3c1 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Mon, 14 Jan 2019 16:40:14 +0800
Subject: *rename source file

---
 src/libjin-lua/common/l_shared.hpp | 84 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 src/libjin-lua/common/l_shared.hpp

(limited to 'src/libjin-lua/common/l_shared.hpp')

diff --git a/src/libjin-lua/common/l_shared.hpp b/src/libjin-lua/common/l_shared.hpp
new file mode 100644
index 0000000..6a58ab3
--- /dev/null
+++ b/src/libjin-lua/common/l_shared.hpp
@@ -0,0 +1,84 @@
+#ifndef __JE_LUA_SHARED_H__
+#define __JE_LUA_SHARED_H__
+
+#include <map>
+#include <vector>
+#include <functional>
+
+#include "libjin/jin.h"
+
+namespace JinEngine
+{
+    namespace Lua
+    {
+
+        class LuaObject;
+
+        ///
+        /// Thread shared object wrapper.
+        ///
+        class Shared
+        {
+        public:
+            Shared(Object* obj)
+                : mCount(0)
+                , mObject(obj)
+            {
+            }
+
+            inline Object* operator->()
+            {
+                return static_cast<Object*>(mObject);
+            }
+
+            inline Object* getObject()
+            {
+                return static_cast<Object*>(mObject);
+            }
+
+            template<class T>
+            inline T* getObject()
+            {
+                return static_cast<T*>(mObject);
+            }
+
+        private:
+            friend class LuaObject;
+
+            // Disable copy.
+            Shared(const Shared& shared);
+
+            ///
+            /// Shared只能在堆
+            ///
+            ~Shared()
+            {
+                delete mObject;
+            }
+
+            ///
+            /// 在同一个线程的lua_State中，LuaObject和EngineObject应该是一一对应，由LuaObject(lua runtime)管理引用计数
+            /// 和回收。Engine-side引用计数是为了维护不同线程的lua_State共享同一个EngineObject。每次由LuaObject绑定一个
+            /// Shared时就增加一个引用计数，理论上在同一个线程中，一个EngineObject只能由一个LuaObject绑定，发生在new 
+            /// instance过程中，那么mCount就表明EngineObject的共享线程数。
+            ///
+            inline void Shared::retain()
+            {
+                ++mCount;
+            }
+
+            inline void Shared::release()
+            {
+                if (--mCount <= 0)
+                    delete this;
+            }
+
+            Object* mObject;
+            int mCount;
+
+        };
+        
+    } // namespace Lua
+} // namespace JinEngine
+
+#endif
\ No newline at end of file
-- 
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