From 0e29f7974b59e4440cf02e1388fb9d8ab2b5c5fd Mon Sep 17 00:00:00 2001 From: Hein-Pieter van Braam Date: Wed, 25 Jul 2018 03:11:03 +0200 Subject: Reduce unnecessary COW on Vector by make writing explicit This commit makes operator[] on Vector const and adds a write proxy to it. From now on writes to Vectors need to happen through the .write proxy. So for instance: Vector vec; vec.push_back(10); std::cout << vec[0] << std::endl; vec.write[0] = 20; Failing to use the .write proxy will cause a compilation error. In addition COWable datatypes can now embed a CowData pointer to their data. This means that String, CharString, and VMap no longer use or derive from Vector. _ALWAYS_INLINE_ and _FORCE_INLINE_ are now equivalent for debug and non-debug builds. This is a lot faster for Vector in the editor and while running tests. The reason why this difference used to exist is because force-inlined methods used to give a bad debugging experience. After extensive testing with modern compilers this is no longer the case. --- modules/gdscript/gdscript_function.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'modules/gdscript/gdscript_function.cpp') diff --git a/modules/gdscript/gdscript_function.cpp b/modules/gdscript/gdscript_function.cpp index 6a08d86904..ec346a6b46 100644 --- a/modules/gdscript/gdscript_function.cpp +++ b/modules/gdscript/gdscript_function.cpp @@ -62,7 +62,7 @@ Variant *GDScriptFunction::_get_variant(int p_address, GDScriptInstance *p_insta } #endif //member indexing is O(1) - return &p_instance->members[address]; + return &p_instance->members.write[address]; } break; case ADDR_TYPE_CLASS_CONSTANT: { @@ -1218,7 +1218,7 @@ Variant GDScriptFunction::call(GDScriptInstance *p_instance, const Variant **p_a gdfs->state.stack.resize(alloca_size); //copy variant stack for (int i = 0; i < _stack_size; i++) { - memnew_placement(&gdfs->state.stack[sizeof(Variant) * i], Variant(stack[i])); + memnew_placement(&gdfs->state.stack.write[sizeof(Variant) * i], Variant(stack[i])); } gdfs->state.stack_size = _stack_size; gdfs->state.self = self; -- cgit v1.2.3