Add traits to common utils data structures.
Many of our basic data structures are trivially movable using
memcpy() even if they are not trivially constructable, destructable
or copyable. It's worth taking advantage of this *ahem* trait.
Adding trivial_move_trait to String16 reduces appt running
time on frameworks/base/core/res by 40%!
Change-Id: I630a1a027e2d0ded96856e4ca042ea82906289fe
diff --git a/include/utils/TypeHelpers.h b/include/utils/TypeHelpers.h
index 1f2c2d5..2bf33c3 100644
--- a/include/utils/TypeHelpers.h
+++ b/include/utils/TypeHelpers.h
@@ -68,12 +68,24 @@
};
};
-#define ANDROID_BASIC_TYPES_TRAITS( T ) \
- template<> struct trait_trivial_ctor< T > { enum { value = true }; }; \
- template<> struct trait_trivial_dtor< T > { enum { value = true }; }; \
- template<> struct trait_trivial_copy< T > { enum { value = true }; }; \
+#define ANDROID_TRIVIAL_CTOR_TRAIT( T ) \
+ template<> struct trait_trivial_ctor< T > { enum { value = true }; };
+
+#define ANDROID_TRIVIAL_DTOR_TRAIT( T ) \
+ template<> struct trait_trivial_dtor< T > { enum { value = true }; };
+
+#define ANDROID_TRIVIAL_COPY_TRAIT( T ) \
+ template<> struct trait_trivial_copy< T > { enum { value = true }; };
+
+#define ANDROID_TRIVIAL_MOVE_TRAIT( T ) \
template<> struct trait_trivial_move< T > { enum { value = true }; };
+#define ANDROID_BASIC_TYPES_TRAITS( T ) \
+ ANDROID_TRIVIAL_CTOR_TRAIT( T ) \
+ ANDROID_TRIVIAL_DTOR_TRAIT( T ) \
+ ANDROID_TRIVIAL_COPY_TRAIT( T ) \
+ ANDROID_TRIVIAL_MOVE_TRAIT( T )
+
// ---------------------------------------------------------------------------
/*