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Implement direct strings. (#2196)

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Direct strings are a new type of direct ecma-values (no memory allocation
is needed for encoding them) in JerryScript. Currently magic strings,
external magic strings and uint values are encoded as direct strings.

The constant pool of JerryScript byte-code is changed to hold ecma-values
rather than cpointers to support direct strings.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2018-02-23 00:21:46 +01:00
committed by yichoi
parent fbf5c32747
commit 51e3c4455a
37 changed files with 1493 additions and 1148 deletions
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jerry-core/ecma/base/ecma-literal-storage.h
+14 -12
View File
@@ -27,32 +27,34 @@
* @{
*/
#ifdef JERRY_ENABLE_SNAPSHOT_SAVE
/**
* Snapshot literal - offset map
*/
typedef struct
{
jmem_cpointer_t literal_id; /**< literal id */
jmem_cpointer_t literal_offset; /**< literal offset */
ecma_value_t literal_id; /**< literal id */
ecma_value_t literal_offset; /**< literal offset */
} lit_mem_to_snapshot_id_map_entry_t;
#endif /* JERRY_ENABLE_SNAPSHOT_SAVE */
void ecma_finalize_lit_storage (void);
jmem_cpointer_t ecma_find_or_create_literal_string (const lit_utf8_byte_t *chars_p, lit_utf8_size_t size);
jmem_cpointer_t ecma_find_or_create_literal_number (ecma_number_t number_arg);
ecma_value_t ecma_find_or_create_literal_string (const lit_utf8_byte_t *chars_p, lit_utf8_size_t size);
ecma_value_t ecma_find_or_create_literal_number (ecma_number_t number_arg);
#ifdef JERRY_ENABLE_SNAPSHOT_SAVE
bool
ecma_save_literals_for_snapshot (uint32_t *buffer_p, size_t buffer_size, size_t *in_out_buffer_offset_p,
lit_mem_to_snapshot_id_map_entry_t **out_map_p, uint32_t *out_map_len_p);
void ecma_save_literals_append_value (ecma_value_t value, ecma_collection_header_t *lit_pool_p);
void ecma_save_literals_add_compiled_code (const ecma_compiled_code_t *compiled_code_p,
ecma_collection_header_t *lit_pool_p);
bool ecma_save_literals_for_snapshot (ecma_collection_header_t *lit_pool_p, uint32_t *buffer_p, size_t buffer_size,
size_t *in_out_buffer_offset_p, lit_mem_to_snapshot_id_map_entry_t **out_map_p,
uint32_t *out_map_len_p);
#endif /* JERRY_ENABLE_SNAPSHOT_SAVE */
#if defined JERRY_ENABLE_SNAPSHOT_EXEC || defined JERRY_ENABLE_SNAPSHOT_SAVE
const uint8_t *
ecma_snapshot_get_literals_base (uint32_t *buffer_p, const uint8_t **number_base_p);
jmem_cpointer_t
ecma_snapshot_get_literal (const uint8_t *literal_base_p, const uint8_t *number_base_p,
jmem_cpointer_t offset);
ecma_value_t
ecma_snapshot_get_literal (const uint8_t *literal_base_p, ecma_value_t literal_value);
#endif /* JERRY_ENABLE_SNAPSHOT_EXEC || JERRY_ENABLE_SNAPSHOT_SAVE */
/**