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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-helpers.c
+9 -37
View File
@@ -90,21 +90,21 @@ JERRY_STATIC_ASSERT ((ECMA_OBJECT_MAX_REF | (ECMA_OBJECT_REF_ONE - 1)) == UINT16
*/
ecma_object_t *
ecma_create_object (ecma_object_t *prototype_object_p, /**< pointer to prototybe of the object (or NULL) */
bool is_extended, /**< extended object */
bool is_extensible, /**< value of extensible attribute */
size_t ext_object_size, /**< size of extended objects */
ecma_object_type_t type) /**< object type */
{
ecma_object_t *new_object_p = (is_extended ? ((ecma_object_t *) ecma_alloc_extended_object ())
: ecma_alloc_object ());
ecma_object_t *new_object_p;
uint16_t type_flags = (uint16_t) type;
if (is_extensible)
if (ext_object_size > 0)
{
type_flags = (uint16_t) (type_flags | ECMA_OBJECT_FLAG_EXTENSIBLE);
new_object_p = (ecma_object_t *) ecma_alloc_extended_object (ext_object_size);
}
else
{
new_object_p = ecma_alloc_object ();
}
new_object_p->type_flags_refs = type_flags;
new_object_p->type_flags_refs = (uint16_t) (type | ECMA_OBJECT_FLAG_EXTENSIBLE);
ecma_init_gc_info (new_object_p);
@@ -775,22 +775,6 @@ ecma_free_internal_property (ecma_property_t *property_p) /**< the property */
switch (ECMA_PROPERTY_GET_INTERNAL_PROPERTY_TYPE (property_p))
{
case ECMA_INTERNAL_PROPERTY_ECMA_VALUE: /* ecma-value property except object */
{
JERRY_ASSERT (!ecma_is_value_object (property_value));
ecma_free_value (property_value);
break;
}
case ECMA_INTERNAL_PROPERTY_DATE_FLOAT: /* pointer to a ecma_number_t */
{
ecma_number_t *num_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_number_t, property_value);
ecma_dealloc_number (num_p);
break;
}
case ECMA_INTERNAL_PROPERTY_NATIVE_HANDLE: /* an external pointer */
case ECMA_INTERNAL_PROPERTY_FREE_CALLBACK: /* an external pointer */
{
@@ -801,7 +785,6 @@ ecma_free_internal_property (ecma_property_t *property_p) /**< the property */
case ECMA_INTERNAL_PROPERTY_SCOPE: /* a lexical environment */
case ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP: /* an object */
case ECMA_INTERNAL_PROPERTY_CLASS: /* an enum */
case ECMA_INTERNAL_PROPERTY_INSTANTIATED_MASK_32_63: /* an integer (bit-mask) */
case ECMA_INTERNAL_PROPERTY_BOUND_FUNCTION_TARGET_FUNCTION:
{
@@ -831,17 +814,6 @@ ecma_free_internal_property (ecma_property_t *property_p) /**< the property */
JERRY_UNREACHABLE ();
break;
}
case ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE: /* compressed pointer to a regexp bytecode array */
{
ecma_compiled_code_t *bytecode_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_compiled_code_t, property_value);
if (bytecode_p != NULL)
{
ecma_bytecode_deref (bytecode_p);
}
break;
}
}
} /* ecma_free_internal_property */