eo op resolv - do micro optimization to move init to goto blob

as per other recent benchmarking, moving rearely run code (in this
case code to init the op etc.) out of the l1 cacheline prefetch inot a
blob of code at the end of the function where we goto and goto back
again should provide decent-ish speedups for the resolv cache in
avoding this code. yes it makes the code less pretty to read but at
this really low level hot path ... evil things must happen to get the
speed we want/need.

diff --git a/src/lib/eo/Eo.h b/src/lib/eo/Eo.h
index a7325ac..d477871 100644 (file)
--- a/src/lib/eo/Eo.h
+++ b/src/lib/eo/Eo.h
@@ -745,19 +745,31 @@ typedef struct _Efl_Object_Call_Cache
 #endif
 
 // cache OP id, get real fct and object data then do the call
-#define EFL_FUNC_COMMON_OP(Obj, Name, DefRet)                                 \
-     static EFL_FUNC_TLS Efl_Object_Call_Cache ___cache; /* static 0 by default */ \
-     Efl_Object_Op_Call_Data ___call;                                           \
-     if (EINA_UNLIKELY((___cache.op == EFL_NOOP) ||                      \
-                       (___cache.generation != _efl_object_init_generation)))   \
-       {                                                                \
-          ___cache.op = _efl_object_api_op_id_get(EFL_FUNC_COMMON_OP_FUNC(Name)); \
-          if (___cache.op == EFL_NOOP) return DefRet;                    \
-          ___cache.generation = _efl_object_init_generation;                    \
-       }                                                                \
-     if (!_efl_object_call_resolve((Eo *) Obj, #Name, &___call, &___cache,                  \
-                           __FILE__, __LINE__)) return DefRet;          \
-     _Eo_##Name##_func _func_ = (_Eo_##Name##_func) ___call.func;       \
+#define EFL_FUNC_COMMON_OP(Obj, Name, DefRet) \
+   static EFL_FUNC_TLS Efl_Object_Call_Cache ___cache; /* static 0 by default */ \
+   Efl_Object_Op_Call_Data ___call; \
+   if (EINA_UNLIKELY((___cache.op == EFL_NOOP) || \
+                     (___cache.generation != _efl_object_init_generation))) \
+     goto __##Name##_op_create; /* yes a goto - see below */ \
+   __##Name##_op_create_done: \
+   if (!_efl_object_call_resolve((Eo *) Obj, #Name, &___call, &___cache, \
+                                 __FILE__, __LINE__)) return DefRet; \
+   _Eo_##Name##_func _func_ = (_Eo_##Name##_func) ___call.func;
+
+// yes this looks ugly with gotos BUT it moves rare "init" handling code
+// out of the hot path and thus l1 instruction cach prefetch etc. so it
+// should provide a micro-speedup. this has been shown to have real big
+// measurable effects on very hot code paths as l1 instgruction cache
+// does matter and fetching a cacheline of code may fetch a lot of rarely
+// used instructions that are skipepd by and if so moving those away out
+// of the cacheline that was already fetched should yield better cache
+// hits.
+#define EFL_FUNC_COMMON_OP_END(Obj, Name, DefRet) \
+__##Name##_op_create: \
+   ___cache.op = _efl_object_api_op_id_get(EFL_FUNC_COMMON_OP_FUNC(Name)); \
+   if (___cache.op == EFL_NOOP) return DefRet; \
+   ___cache.generation = _efl_object_init_generation; \
+   goto __##Name##_op_create_done;
 
 #define _EFL_OBJECT_API_BEFORE_HOOK
 #define _EFL_OBJECT_API_AFTER_HOOK
@@ -765,55 +777,61 @@ typedef struct _Efl_Object_Call_Cache
 
 // to define an EAPI function
 #define _EFL_OBJECT_FUNC_BODY(Name, ObjType, Ret, DefRet) \
-  Ret                                                                   \
-  Name(ObjType obj)                                                            \
-  {                                                                     \
-     typedef Ret (*_Eo_##Name##_func)(Eo *, void *obj_data);            \
-     Ret _r;                                                            \
-     EFL_FUNC_COMMON_OP(obj, Name, DefRet);                                   \
-     _EFL_OBJECT_API_BEFORE_HOOK                                                       \
-     _r = _EFL_OBJECT_API_CALL_HOOK(_func_(___call.eo_id, ___call.data));     \
+  Ret \
+  Name(ObjType obj) \
+  { \
+     typedef Ret (*_Eo_##Name##_func)(Eo *, void *obj_data); \
+     Ret _r; \
+     EFL_FUNC_COMMON_OP(obj, Name, DefRet); \
+     _EFL_OBJECT_API_BEFORE_HOOK \
+     _r = _EFL_OBJECT_API_CALL_HOOK(_func_(___call.eo_id, ___call.data)); \
      _efl_object_call_end(&___call); \
-     _EFL_OBJECT_API_AFTER_HOOK                                                       \
-     return _r;                                                         \
+     _EFL_OBJECT_API_AFTER_HOOK \
+     return _r; \
+     EFL_FUNC_COMMON_OP_END(obj, Name, DefRet); \
   }
 
-#define _EFL_OBJECT_VOID_FUNC_BODY(Name, ObjType)                               \
-  void                                                                 \
-  Name(ObjType obj)                                                            \
-  {                                                                     \
-     typedef void (*_Eo_##Name##_func)(Eo *, void *obj_data);           \
-     EFL_FUNC_COMMON_OP(obj, Name, );                                         \
-     _EFL_OBJECT_API_BEFORE_HOOK                                                       \
-     _EFL_OBJECT_API_CALL_HOOK(_func_(___call.eo_id, ___call.data));          \
-     _efl_object_call_end(&___call);                                            \
-     _EFL_OBJECT_API_AFTER_HOOK                                                       \
+#define _EFL_OBJECT_VOID_FUNC_BODY(Name, ObjType) \
+  void \
+  Name(ObjType obj) \
+  { \
+     typedef void (*_Eo_##Name##_func)(Eo *, void *obj_data); \
+     EFL_FUNC_COMMON_OP(obj, Name, ); \
+     _EFL_OBJECT_API_BEFORE_HOOK \
+     _EFL_OBJECT_API_CALL_HOOK(_func_(___call.eo_id, ___call.data)); \
+     _efl_object_call_end(&___call); \
+     _EFL_OBJECT_API_AFTER_HOOK \
+     return; \
+     EFL_FUNC_COMMON_OP_END(obj, Name, ); \
   }
 
-#define _EFL_OBJECT_FUNC_BODYV(Name, ObjType, Ret, DefRet, Arguments, ...)      \
-  Ret                                                                   \
-  Name(ObjType obj, __VA_ARGS__)                                                     \
-  {                                                                     \
+#define _EFL_OBJECT_FUNC_BODYV(Name, ObjType, Ret, DefRet, Arguments, ...) \
+  Ret \
+  Name(ObjType obj, __VA_ARGS__) \
+  { \
      typedef Ret (*_Eo_##Name##_func)(Eo *, void *obj_data, __VA_ARGS__); \
-     Ret _r;                                                            \
-     EFL_FUNC_COMMON_OP(obj, Name, DefRet);                                   \
-     _EFL_OBJECT_API_BEFORE_HOOK                                                       \
+     Ret _r; \
+     EFL_FUNC_COMMON_OP(obj, Name, DefRet); \
+     _EFL_OBJECT_API_BEFORE_HOOK \
      _r = _EFL_OBJECT_API_CALL_HOOK(_func_(___call.eo_id, ___call.data, Arguments)); \
      _efl_object_call_end(&___call); \
-     _EFL_OBJECT_API_AFTER_HOOK                                                        \
-     return _r;                                                         \
+     _EFL_OBJECT_API_AFTER_HOOK \
+     return _r; \
+     EFL_FUNC_COMMON_OP_END(obj, Name, DefRet); \
   }
 
-#define _EFL_OBJECT_VOID_FUNC_BODYV(Name, ObjType, Arguments, ...)              \
-  void                                                                  \
-  Name(ObjType obj, __VA_ARGS__)                                                     \
-  {                                                                     \
+#define _EFL_OBJECT_VOID_FUNC_BODYV(Name, ObjType, Arguments, ...) \
+  void \
+  Name(ObjType obj, __VA_ARGS__) \
+  { \
      typedef void (*_Eo_##Name##_func)(Eo *, void *obj_data, __VA_ARGS__); \
-     EFL_FUNC_COMMON_OP(obj, Name, );                                         \
-     _EFL_OBJECT_API_BEFORE_HOOK                                                       \
+     EFL_FUNC_COMMON_OP(obj, Name, ); \
+     _EFL_OBJECT_API_BEFORE_HOOK \
      _EFL_OBJECT_API_CALL_HOOK(_func_(___call.eo_id, ___call.data, Arguments)); \
      _efl_object_call_end(&___call); \
-     _EFL_OBJECT_API_AFTER_HOOK                                                        \
+     _EFL_OBJECT_API_AFTER_HOOK \
+     return; \
+     EFL_FUNC_COMMON_OP_END(obj, Name, ); \
   }
 
 #define EFL_FUNC_BODY(Name, Ret, DefRet) _EFL_OBJECT_FUNC_BODY(Name, Eo *, Ret, DefRet)