Added some stuff for platforms without TLS

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@767 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/dynamic_arg.hpp

@@ -16,15 +16,22 @@
 // ----------------------------------------------------------------------------- : Includes
 
 #include <util/prec.hpp>
+#include <wx/thread.h>
 
 // ----------------------------------------------------------------------------- : Dynamic argument
 
 #ifdef _MSC_VER
 #	define THREAD_LOCAL __declspec(thread)
-#else
+#	define HAVE_TLS 1
+#elseif defined __linux__
 #	define THREAD_LOCAL __thread
+#	define HAVE_TLS 1
+#else
+#	define HAVE_TLS 0
 #endif
 
+#if HAVE_TLS
+
 	/// Declare a dynamic argument.
 	/** The value of the argument can be got with: name()
 	 *  To change the value use WITH_DYNAMIC_ARG(name, newValue)
@@ -64,5 +71,52 @@
 	#define WITH_DYNAMIC_ARG(name, value)					\
 		name##_changer name##_dummmy(value)
 
+#else
+
+	template <typename T> struct ThreadLocalObject {
+		map<int,T*> objects;
+		T def;
+		wxCriticalSection container_access;
+
+		inline T operator () () {
+			wxCriticalSectionLocker lock(container_access);
+			T*& p = objects[wxThread::GetCurrentId()];
+			if (!p) {
+				p = new T(def);
+			}
+			return *objects[wxThread::GetCurrentId()];
+		}
+
+		inline void store (T value) {
+			wxCriticalSectionLocker lock(container_access);
+			T*& p = objects[wxThread::GetCurrentId()];
+			if (!p) {
+				p = new T(def);
+			}
+			*objects[wxThread::GetCurrentId()] = value;
+		}
+
+		ThreadLocalObject (T def)
+		: def(def)
+		{}
+
+		~ThreadLocalObject () {
+			for (typename map<int,T*>::iterator i = objects.begin(); i != objects.end(); ++i) {
+				delete *i;
+			}
+		}
+	};
+	
+	#define DECLARE_DYNAMIC_ARG(Type, name)				\
+		extern ThreadLocalObject<Type> name;
+
+	#define IMPLEMENT_DYNAMIC_ARG(Type, name, initial)	\
+		ThreadLocalObject<Type> name (initial);
+
+	#define WITH_DYNAMIC_ARG(name, value)				\
+		name.store(value);
+
+#endif
+
 // ----------------------------------------------------------------------------- : EOF
 #endif