Added function to notify ScriptLanguage when a thread is created/freed, allows scripts to allocate a stack there via TLS

core/script_language.h

@@ -59,6 +59,9 @@ public:
 	static void set_reload_scripts_on_save(bool p_enable);
 	static bool is_reload_scripts_on_save_enabled();
 
+	static void thread_enter();
+	static void thread_exit();
+
 	static void init_languages();
 };
 
@@ -128,7 +131,6 @@ public:
 	virtual void call_multilevel_reversed(const StringName& p_method,const Variant** p_args,int p_argcount);
 	virtual void notification(int p_notification)=0;
 
-
 	//this is used by script languages that keep a reference counter of their own
 	//you can make make Ref<> not die when it reaches zero, so deleting the reference
 	//depends entirely from the script
@@ -183,6 +185,12 @@ public:
 	virtual void auto_indent_code(String& p_code,int p_from_line,int p_to_line) const=0;
 	virtual void add_global_constant(const StringName& p_variable,const Variant& p_value)=0;
 
+	/* MULTITHREAD FUNCTIONS */
+
+	//some VMs need to be notified of thread creation/exiting to allocate a stack
+	virtual void thread_enter() {}
+	virtual void thread_exit() {}
+
 	/* DEBUGGER FUNCTIONS */
 
 	virtual String debug_get_error() const=0;