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Remove several internal property types for primitive objects. (#1399)

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Class and value internal properties are always exists for primitive
types (e.g. Boolean, Regex) so they can be stored right after the
object. This improve property access (since internal properties are
searched by a slow linear algorithm) and reduces memory consumption,
since only 8 byte is allocated for these two properties instead of
16 which is the size of a property pair.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2016-10-19 15:36:15 +02:00
committed by GitHub
parent 2ef89eafbf
commit fd98d649b6
29 changed files with 487 additions and 419 deletions
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jerry-core/ecma/base/ecma-globals.h
+30 -14
View File
@@ -197,15 +197,11 @@ typedef uintptr_t ecma_external_pointer_t;
*/
typedef enum
{
ECMA_INTERNAL_PROPERTY_CLASS, /**< [[Class]] */
ECMA_INTERNAL_PROPERTY_SCOPE, /**< [[Scope]] */
ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP, /**< [[ParametersMap]] */
ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE, /**< pointer to RegExp bytecode array */
ECMA_INTERNAL_PROPERTY_NATIVE_HANDLE, /**< native handle associated with an object */
ECMA_INTERNAL_PROPERTY_FREE_CALLBACK, /**< object's native free callback */
ECMA_INTERNAL_PROPERTY_ECMA_VALUE, /**< [[Primitive value]] for String, Number, and Boolean */
ECMA_INTERNAL_PROPERTY_DATE_FLOAT, /**< float number value type for date objects */
/** Bound function internal properties **/
ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_TARGET_FUNCTION,
@@ -479,10 +475,10 @@ typedef enum
{
ECMA_OBJECT_TYPE_GENERAL = 0, /**< all objects that are not String (15.5),
* Function (15.3), Arguments (10.6), Array (15.4) objects */
ECMA_OBJECT_TYPE_FUNCTION = 1, /**< Function objects (15.3), created through 13.2 routine */
ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION = 2, /**< External (host) function object */
ECMA_OBJECT_TYPE_ARRAY = 3, /**< Array object (15.4) */
ECMA_OBJECT_TYPE_STRING = 4, /**< String objects (15.5) */
ECMA_OBJECT_TYPE_CLASS = 1, /**< Objects with class property */
ECMA_OBJECT_TYPE_FUNCTION = 2, /**< Function objects (15.3), created through 13.2 routine */
ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION = 3, /**< External (host) function object */
ECMA_OBJECT_TYPE_ARRAY = 4, /**< Array object (15.4) */
ECMA_OBJECT_TYPE_BOUND_FUNCTION = 5, /**< Function objects (15.3), created through 15.3.4.5 routine */
ECMA_OBJECT_TYPE_ARGUMENTS = 6, /**< Arguments object (10.6) */
@@ -565,6 +561,17 @@ typedef struct
jmem_cpointer_t prototype_or_outer_reference_cp;
} ecma_object_t;
/**
* Description of built-in properties of an object.
*/
typedef struct
{
uint8_t id; /**< built-in id */
uint8_t length; /**< length for built-in functions */
uint16_t routine_id; /**< routine id for built-in functions */
uint32_t instantiated_bitset; /**< bit set for instantiated properties */
} ecma_built_in_props_t;
/**
* Description of extended ECMA-object.
*
@@ -579,16 +586,16 @@ typedef struct
*/
union
{
ecma_built_in_props_t built_in; /**< built-in object part */
/*
* Description of built-in objects.
* Description of objects with class.
*/
struct
{
uint8_t id; /**< built-in id */
uint8_t length; /**< length for built-in functions */
uint16_t routine_id; /**< routine id for built-in functions */
uint32_t instantiated_bitset; /**< bit set for instantiated properties */
} built_in;
uint16_t class_id; /**< class id of the object */
ecma_value_t value; /**< value of the object (e.g. boolean, number, string, etc.) */
} class_prop;
/*
* Description of function objects.
@@ -603,6 +610,15 @@ typedef struct
} u;
} ecma_extended_object_t;
/**
* Description of built-in extended ECMA-object.
*/
typedef struct
{
ecma_extended_object_t extended_object; /**< extended object part */
ecma_built_in_props_t built_in; /**< built-in object part */
} ecma_extended_built_in_object_t;
/**
* Description of ECMA property descriptor
*