/**
* Initialize LCache
*/
void
ecma_lcache_init (void)
{
#ifndef CONFIG_ECMA_LCACHE_DISABLE
memset (JERRY_HASH_TABLE_CONTEXT (table), 0, sizeof (jerry_hash_table_t));
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
} /* ecma_lcache_init */
/**
* Invalidate LCache entries associated with given object and property name / property
*/
void
ecma_lcache_invalidate (ecma_object_t *object_p, /**< object */
jmem_cpointer_t name_cp, /**< property name */
ecma_property_t *prop_p) /**< property */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (prop_p != NULL && ecma_is_property_lcached (prop_p));
JERRY_ASSERT (ECMA_PROPERTY_GET_TYPE (*prop_p) == ECMA_PROPERTY_TYPE_NAMEDDATA
|| ECMA_PROPERTY_GET_TYPE (*prop_p) == ECMA_PROPERTY_TYPE_NAMEDACCESSOR);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
jmem_cpointer_t object_cp;
ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
lit_string_hash_t name_hash = ecma_string_get_property_name_hash (*prop_p, name_cp);
size_t row_index = ecma_lcache_row_index (object_cp, name_hash);
ecma_lcache_hash_entry_t *entry_p = JERRY_HASH_TABLE_CONTEXT (table) [row_index];
for (uint32_t entry_index = 0; entry_index < ECMA_LCACHE_HASH_ROW_LENGTH; entry_index++)
{
if (entry_p->object_cp != ECMA_NULL_POINTER && entry_p->prop_p == prop_p)
{
JERRY_ASSERT (entry_p->object_cp == object_cp);
ecma_lcache_invalidate_entry (entry_p);
return;
}
entry_p++;
}
/* The property must be present. */
JERRY_UNREACHABLE ();
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
} /* ecma_lcache_invalidate */
/**
* Insert an entry into LCache
*/
void
ecma_lcache_insert (ecma_object_t *object_p, /**< object */
jmem_cpointer_t name_cp, /**< property name */
ecma_property_t *prop_p) /**< property */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (prop_p != NULL && !ecma_is_property_lcached (prop_p));
JERRY_ASSERT (ECMA_PROPERTY_GET_TYPE (*prop_p) == ECMA_PROPERTY_TYPE_NAMEDDATA
|| ECMA_PROPERTY_GET_TYPE (*prop_p) == ECMA_PROPERTY_TYPE_NAMEDACCESSOR);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
jmem_cpointer_t object_cp;
ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
lit_string_hash_t name_hash = ecma_string_get_property_name_hash (*prop_p, name_cp);
size_t row_index = ecma_lcache_row_index (object_cp, name_hash);
ecma_lcache_hash_entry_t *entries_p = JERRY_HASH_TABLE_CONTEXT (table)[row_index];
int32_t entry_index;
for (entry_index = 0; entry_index < ECMA_LCACHE_HASH_ROW_LENGTH; entry_index++)
{
if (entries_p[entry_index].object_cp == ECMA_NULL_POINTER)
{
break;
}
}
if (entry_index == ECMA_LCACHE_HASH_ROW_LENGTH)
{
/* Invalidate the last entry. */
ecma_lcache_invalidate_entry (entries_p + ECMA_LCACHE_HASH_ROW_LENGTH - 1);
/* Shift other entries towards the end. */
for (uint32_t i = ECMA_LCACHE_HASH_ROW_LENGTH - 1; i > 0; i--)
{
entries_p[i] = entries_p[i - 1];
}
entry_index = 0;
}
ecma_lcache_hash_entry_t *entry_p = entries_p + entry_index;
ECMA_SET_NON_NULL_POINTER (entry_p->object_cp, object_p);
entry_p->prop_name_cp = name_cp;
entry_p->prop_p = prop_p;
ecma_set_property_lcached (entry_p->prop_p, true);
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
} /* ecma_lcache_insert */
/**
* Lookup property in the LCache
*
* @return a pointer to an ecma_property_t if the lookup is successful
* NULL otherwise
*/
inline ecma_property_t * __attr_always_inline___
ecma_lcache_lookup (ecma_object_t *object_p, /**< object */
const ecma_string_t *prop_name_p) /**< property's name */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (prop_name_p != NULL);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
jmem_cpointer_t object_cp;
ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
size_t row_index = ecma_lcache_row_index (object_cp, prop_name_p);
ecma_lcache_hash_entry_t *entry_p = JERRY_HASH_TABLE_CONTEXT (table) [row_index];
ecma_lcache_hash_entry_t *entry_end_p = entry_p + ECMA_LCACHE_HASH_ROW_LENGTH;
ecma_string_container_t prop_container = ECMA_STRING_GET_CONTAINER (prop_name_p);
while (entry_p < entry_end_p)
{
if (entry_p->object_cp == object_cp)
{
ecma_string_t *entry_prop_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
entry_p->prop_name_cp);
JERRY_ASSERT ((prop_name_p->hash & ECMA_LCACHE_HASH_MASK) == (entry_prop_name_p->hash & ECMA_LCACHE_HASH_MASK));
if (prop_name_p == entry_prop_name_p
|| (prop_container > ECMA_STRING_CONTAINER_HEAP_LONG_UTF8_STRING
&& prop_container == ECMA_STRING_GET_CONTAINER (entry_prop_name_p)
&& prop_name_p->u.common_field == entry_prop_name_p->u.common_field))
{
ecma_property_t *prop_p = entry_p->prop_p;
JERRY_ASSERT (prop_p != NULL && ecma_is_property_lcached (prop_p));
return prop_p;
}
else
{
/* They can be equal, but generic string comparison is too costly. */
}
}
entry_p++;
}
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
return NULL;
} /* ecma_lcache_lookup */
/**
* Lookup property in the LCache
*
* @return a pointer to an ecma_property_t if the lookup is successful
* NULL otherwise
*/
inline ecma_property_t * __attr_always_inline___
ecma_lcache_lookup (ecma_object_t *object_p, /**< object */
const ecma_string_t *prop_name_p) /**< property's name */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (prop_name_p != NULL);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
jmem_cpointer_t object_cp;
ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
size_t row_index = ecma_lcache_row_index (object_cp, ecma_string_hash (prop_name_p));
ecma_lcache_hash_entry_t *entry_p = JERRY_HASH_TABLE_CONTEXT (table) [row_index];
ecma_lcache_hash_entry_t *entry_end_p = entry_p + ECMA_LCACHE_HASH_ROW_LENGTH;
ecma_property_t prop_name_type;
jmem_cpointer_t prop_name_cp = ecma_string_to_lcache_property_name (prop_name_p, &prop_name_type);
while (entry_p < entry_end_p)
{
if (entry_p->object_cp == object_cp
&& entry_p->prop_name_cp == prop_name_cp)
{
ecma_property_t *prop_p = entry_p->prop_p;
JERRY_ASSERT (prop_p != NULL && ecma_is_property_lcached (prop_p));
if (ECMA_PROPERTY_GET_NAME_TYPE (*prop_p) == prop_name_type)
{
return prop_p;
}
}
else
{
/* They can be equal, but generic string comparison is too costly. */
}
entry_p++;
}
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
return NULL;
} /* ecma_lcache_lookup */