/**
* Invalidate LCache entries associated with given object and property name / property
*
* Note:
* Either property name argument or property argument should be NULL,
* and another should be non-NULL.
* In case property name argument is NULL, property's name is taken
* from property's description.
*/
void
ecma_lcache_invalidate (ecma_object_t *object_p, /**< object */
ecma_string_t *prop_name_p, /**< property's name (See also: Note) */
ecma_property_t *prop_p) /**< property (See also: Note) */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (prop_name_p != NULL);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
if (prop_p != NULL)
{
JERRY_ASSERT (ECMA_PROPERTY_GET_TYPE (prop_p) == ECMA_PROPERTY_TYPE_NAMEDDATA
|| ECMA_PROPERTY_GET_TYPE (prop_p) == ECMA_PROPERTY_TYPE_NAMEDACCESSOR);
bool is_cached = ecma_is_property_lcached (prop_p);
if (!is_cached)
{
return;
}
ecma_set_property_lcached (prop_p, false);
}
unsigned int object_cp;
ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
lit_string_hash_t hash_key = ecma_string_hash (prop_name_p);
/* Property's name has was computed.
* Given (object, property name) pair should be in the row corresponding to computed hash.
*/
ecma_lcache_invalidate_row_for_object_property_pair (hash_key, object_cp, prop_p);
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
} /* ecma_lcache_invalidate */
/**
* Invalidate specified LCache entry
*/
static inline void __attr_always_inline___
ecma_lcache_invalidate_entry (ecma_lcache_hash_entry_t *entry_p) /**< entry to invalidate */
{
JERRY_ASSERT (entry_p != NULL);
JERRY_ASSERT (entry_p->object_cp != ECMA_NULL_POINTER);
JERRY_ASSERT (entry_p->prop_p != NULL);
entry_p->object_cp = ECMA_NULL_POINTER;
ecma_set_property_lcached (entry_p->prop_p, false);
} /* ecma_lcache_invalidate_entry */
/**
* 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 */
/**
* Invalidate specified LCache entry
*/
static void
ecma_lcache_invalidate_entry (ecma_lcache_hash_entry_t *entry_p) /**< entry to invalidate */
{
JERRY_ASSERT (entry_p != NULL);
JERRY_ASSERT (entry_p->object_cp != ECMA_NULL_POINTER);
ecma_deref_object (ECMA_GET_NON_NULL_POINTER (ecma_object_t,
entry_p->object_cp));
entry_p->object_cp = ECMA_NULL_POINTER;
ecma_deref_ecma_string (ECMA_GET_NON_NULL_POINTER (ecma_string_t,
entry_p->prop_name_cp));
if (entry_p->prop_p != NULL)
{
ecma_set_property_lcached (entry_p->prop_p, false);
}
} /* ecma_lcache_invalidate_entry */
/**
* Insert an entry into LCache
*/
void
ecma_lcache_insert (ecma_object_t *object_p, /**< object */
ecma_string_t *prop_name_p, /**< property's name */
ecma_property_t *prop_p) /**< pointer to associated property or NULL
* (NULL indicates that the object doesn't have property
* with the name specified) */
{
JERRY_ASSERT (object_p != NULL);
JERRY_ASSERT (prop_name_p != NULL);
#ifndef CONFIG_ECMA_LCACHE_DISABLE
prop_name_p = ecma_copy_or_ref_ecma_string (prop_name_p);
lit_string_hash_t hash_key = ecma_string_hash (prop_name_p);
if (prop_p != NULL)
{
if (unlikely (ecma_is_property_lcached (prop_p)))
{
int32_t entry_index;
for (entry_index = 0; entry_index < ECMA_LCACHE_HASH_ROW_LENGTH; entry_index++)
{
if (ecma_lcache_hash_table[hash_key][entry_index].object_cp != ECMA_NULL_POINTER
&& ecma_lcache_hash_table[hash_key][entry_index].prop_p == prop_p)
{
#ifndef JERRY_NDEBUG
ecma_object_t *obj_in_entry_p;
obj_in_entry_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
ecma_lcache_hash_table[hash_key][entry_index].object_cp);
JERRY_ASSERT (obj_in_entry_p == object_p);
#endif /* !JERRY_NDEBUG */
break;
}
}
JERRY_ASSERT (entry_index != ECMA_LCACHE_HASH_ROW_LENGTH);
ecma_lcache_invalidate_entry (&ecma_lcache_hash_table[hash_key][entry_index]);
}
JERRY_ASSERT (!ecma_is_property_lcached (prop_p));
ecma_set_property_lcached (prop_p, true);
}
int32_t entry_index;
for (entry_index = 0; entry_index < ECMA_LCACHE_HASH_ROW_LENGTH; entry_index++)
{
if (ecma_lcache_hash_table[hash_key][entry_index].object_cp == ECMA_NULL_POINTER)
{
break;
}
}
if (entry_index == ECMA_LCACHE_HASH_ROW_LENGTH)
{
/* No empty entry was found, invalidating the whole row */
for (uint32_t i = 0; i < ECMA_LCACHE_HASH_ROW_LENGTH; i++)
{
ecma_lcache_invalidate_entry (&ecma_lcache_hash_table[hash_key][i]);
}
entry_index = 0;
}
ecma_ref_object (object_p);
ECMA_SET_NON_NULL_POINTER (ecma_lcache_hash_table[ hash_key ][ entry_index ].object_cp, object_p);
ECMA_SET_NON_NULL_POINTER (ecma_lcache_hash_table[ hash_key ][ entry_index ].prop_name_cp, prop_name_p);
ecma_lcache_hash_table[ hash_key ][ entry_index ].prop_p = prop_p;
#else /* CONFIG_ECMA_LCACHE_DISABLE */
(void) prop_p;
#endif /* !CONFIG_ECMA_LCACHE_DISABLE */
} /* ecma_lcache_insert */