YourWishes/jerryscript
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Improve ecma_string_t descriptor (#3016)

Browse Source 
This patch introduces several changes conntect to ecma-strings:
 - Extend the size of the reference counter to 28 bytes from 13
 - Extend the size of the string hash to 32 bytes from 16 to use the extact FNV-1a hash
 - Introduce ECMA_STATIC_STRING_FLAG to reduce the number of string ref/derefs for static strings.
 - Introduce ECMA_STRING_CONTAINER_ASCII_STRING to store run-time allocated ASCII strings more efficiently
 - Remove ECMA_STRING_CONTAINER_LIT_NUMBER to half the storage size of the parsing time allocated floating point numbers
 - Rework the global number storage, to store only the floating point numbers
 - Optimize the lookup in the global number/string/symbol tables via reduce the number of NULL checks during decompressing the next element pointers
 - Reduce the code duplication in ecma_concat_ecma_strings and ecma_append_chars_to_string
 - Improve ecma_string_get_char with optional arguments to make it more reusable.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-08-30 15:16:27 +02:00
committed by GitHub
parent f0578b2c25
commit c6a4a86257
15 changed files with 799 additions and 618 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/ecma/operations/ecma-container-object.c
+2 -2
View File
@@ -476,7 +476,7 @@ ecma_op_container_foreach (ecma_value_t this_arg, /**< this argument */
}
else if (ecma_prop_name_is_map_key (prop_name_p))
{
key_arg = prop_name_p->u.value;
key_arg = ((ecma_extended_string_t *) prop_name_p)->u.value;
}
else
{
@@ -730,7 +730,7 @@ ecma_op_container_iterator_next (ecma_value_t this_val, /**< this argument */
}
else if (ecma_prop_name_is_map_key (prop_name_p))
{
key_arg = prop_name_p->u.value;
key_arg = ((ecma_extended_string_t *) prop_name_p)->u.value;
}
else
{
jerry-core/ecma/operations/ecma-symbol-object.c
+1 -1
View File
@@ -111,7 +111,7 @@ ecma_get_symbol_description (ecma_string_t *symbol_p) /**< ecma-symbol */
JERRY_ASSERT (symbol_p != NULL);
JERRY_ASSERT (ecma_prop_name_is_symbol (symbol_p));
return ecma_get_string_from_value (symbol_p->u.symbol_descriptor);
return ecma_get_string_from_value (((ecma_extended_string_t *) symbol_p)->u.symbol_descriptor);
} /* ecma_get_symbol_description */
/**