Add missing chaiscript_threading.hpp

include/chaiscript/chaiscript_threading.hpp

@@ -0,0 +1,68 @@
+#ifndef __chaiscript_threading_hpp__
+#define __chaiscript_threading_hpp__
+
+#ifndef CHAISCRIPT_NO_THREADS
+#include <boost/thread.hpp>
+#else
+#warning "ChaiScript is compiling without thread safety."
+#endif
+
+namespace chaiscript
+{
+  namespace threading
+  {
+
+#ifndef CHAISCRIPT_NO_THREADS
+
+    template<typename T>
+      class Thread_Storage
+      {
+        public:
+          inline T *operator->() const
+          {
+            if (!m_thread_storage.get())
+            {
+              m_thread_storage.reset(new T());
+            }
+
+            return m_thread_storage.get();
+          }
+
+          inline T &operator*() const
+          {
+            return *(this->operator->());
+          }
+
+        private:
+          mutable boost::thread_specific_ptr<T> m_thread_storage;
+      };
+
+#else
+
+    template<typename T>
+      class Thread_Storage
+      {
+        public:
+          inline T *operator->() const
+          {
+            return &obj;
+          }
+
+          inline T &operator*() const
+          {
+            return obj;
+          }
+
+        private:
+          mutable T obj;
+      };
+
+#endif
+
+  }
+}
+
+
+
+#endif
+