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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-gc.c
+56 -6
View File
@@ -203,10 +203,6 @@ ecma_gc_mark_property (ecma_property_t *property_p) /**< property */
switch (ECMA_PROPERTY_GET_INTERNAL_PROPERTY_TYPE (property_p))
{
case ECMA_INTERNAL_PROPERTY_ECMA_VALUE: /* an ecma_value_t except object */
case ECMA_INTERNAL_PROPERTY_DATE_FLOAT: /* pointer to a ecma_number_t */
case ECMA_INTERNAL_PROPERTY_CLASS: /* an enum */
case ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE: /* pointer to a regexp bytecode array */
case ECMA_INTERNAL_PROPERTY_NATIVE_HANDLE: /* an external pointer */
case ECMA_INTERNAL_PROPERTY_FREE_CALLBACK: /* an object's native free callback */
case ECMA_INTERNAL_PROPERTY_INSTANTIATED_MASK_32_63: /* an integer (bit-mask) */
@@ -440,10 +436,64 @@ ecma_gc_sweep (ecma_object_t *object_p) /**< object to free */
if (!ecma_is_lexical_environment (object_p))
{
if (ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_CLASS)
{
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
switch (ext_object_p->u.class_prop.class_id)
{
/* The undefined id represents an uninitialized class. */
case LIT_MAGIC_STRING_UNDEFINED:
case LIT_MAGIC_STRING_ARGUMENTS_UL:
case LIT_MAGIC_STRING_BOOLEAN_UL:
case LIT_MAGIC_STRING_ERROR_UL:
{
break;
}
case LIT_MAGIC_STRING_STRING_UL:
case LIT_MAGIC_STRING_NUMBER_UL:
{
ecma_free_value (ext_object_p->u.class_prop.value);
break;
}
case LIT_MAGIC_STRING_DATE_UL:
{
ecma_number_t *num_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_number_t,
ext_object_p->u.class_prop.value);
ecma_dealloc_number (num_p);
break;
}
case LIT_MAGIC_STRING_REGEXP_UL:
{
ecma_compiled_code_t *bytecode_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_compiled_code_t,
ext_object_p->u.class_prop.value);
if (bytecode_p != NULL)
{
ecma_bytecode_deref (bytecode_p);
}
break;
}
default:
{
JERRY_UNREACHABLE ();
break;
}
}
size_t size = (ecma_get_object_is_builtin (object_p) ? sizeof (ecma_extended_built_in_object_t)
: sizeof (ecma_extended_object_t));
ecma_dealloc_extended_object ((ecma_extended_object_t *) object_p, size);
return;
}
if (ecma_get_object_is_builtin (object_p)
|| ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION)
{
ecma_dealloc_extended_object ((ecma_extended_object_t *) object_p);
ecma_dealloc_extended_object ((ecma_extended_object_t *) object_p, sizeof (ecma_extended_object_t));
return;
}
@@ -455,7 +505,7 @@ ecma_gc_sweep (ecma_object_t *object_p) /**< object to free */
ecma_bytecode_deref (ECMA_GET_INTERNAL_VALUE_POINTER (ecma_compiled_code_t,
ext_func_p->u.function.bytecode_cp));
ecma_dealloc_extended_object (ext_func_p);
ecma_dealloc_extended_object (ext_func_p, sizeof (ecma_extended_object_t));
return;
}
}