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Storing byte code size in the byte code header. This reduces the

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memory consumption, because the new allocator uses less memory if
the size as available when a block is freed. Snapshot generation
is also simplified.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2016-03-16 02:57:28 -07:00
parent 2a5d17e736
commit d190ca44ae
19 changed files with 265 additions and 338 deletions
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jerry-core/parser/js/js-parser.c
+10 -28
View File
@@ -105,7 +105,7 @@ parser_compute_indicies (parser_context_t *context_p, /**< context */
if (!(literal_p->status_flags & LEXER_FLAG_SOURCE_PTR))
{
PARSER_FREE ((uint8_t *) char_p);
mem_heap_free_block_size_stored ((void *) char_p);
}
}
}
@@ -527,7 +527,7 @@ parser_generate_initializers (parser_context_t *context_p, /**< context */
if (!context_p->is_show_opcodes
&& !(literal_p->status_flags & LEXER_FLAG_SOURCE_PTR))
{
PARSER_FREE (literal_p->u.char_p);
mem_heap_free_block_size_stored ((void *) literal_p->u.char_p);
}
#else /* PARSER_DUMP_BYTE_CODE */
literal_pool_p[literal_p->prop.index] = literal_p->u.value;
@@ -1460,10 +1460,14 @@ parser_post_processing (parser_context_t *context_p) /**< context */
}
total_size += length + context_p->literal_count * sizeof (lit_cpointer_t);
total_size = JERRY_ALIGNUP (total_size, MEM_ALIGNMENT);
compiled_code_p = (ecma_compiled_code_t *) parser_malloc (context_p, total_size);
byte_code_p = (uint8_t *) compiled_code_p;
compiled_code_p->status_flags = CBC_CODE_FLAGS_FUNCTION | (1u << ECMA_BYTECODE_REF_SHIFT);
compiled_code_p->size = (uint16_t) (total_size >> MEM_ALIGNMENT_LOG);
compiled_code_p->refs = 1;
compiled_code_p->status_flags = CBC_CODE_FLAGS_FUNCTION;
if (needs_uint16_arguments)
{
@@ -1518,20 +1522,6 @@ parser_post_processing (parser_context_t *context_p) /**< context */
literal_pool_p = (lit_cpointer_t *) byte_code_p;
byte_code_p += context_p->literal_count * sizeof (lit_cpointer_t);
#ifdef JERRY_ENABLE_SNAPSHOT_SAVE
if (snapshot_report_byte_code_compilation
&& context_p->argument_count > 0)
{
/* Reset all arguments to NULL. */
for (offset = 0; offset < context_p->argument_count; offset++)
{
literal_pool_p[offset] = NOT_A_LITERAL;
}
}
#endif
dst_p = parser_generate_initializers (context_p,
byte_code_p,
literal_pool_p,
@@ -1705,7 +1695,7 @@ parser_post_processing (parser_context_t *context_p) /**< context */
if ((literal_p->type == LEXER_IDENT_LITERAL || literal_p->type == LEXER_STRING_LITERAL)
&& !(literal_p->status_flags & LEXER_FLAG_SOURCE_PTR))
{
PARSER_FREE (literal_p->u.char_p);
mem_heap_free_block_size_stored ((void *) literal_p->u.char_p);
}
}
}
@@ -1780,15 +1770,6 @@ parser_post_processing (parser_context_t *context_p) /**< context */
compiled_code_p);
}
#ifdef JERRY_ENABLE_SNAPSHOT_SAVE
if (snapshot_report_byte_code_compilation)
{
snapshot_add_compiled_code (compiled_code_p, NULL, (uint32_t) total_size);
}
#endif
return compiled_code_p;
} /* parser_post_processing */
@@ -1924,7 +1905,8 @@ parser_parse_source (const uint8_t *source_p, /**< valid UTF-8 source code */
if (context.allocated_buffer_p != NULL)
{
parser_free_local (context.allocated_buffer_p);
parser_free_local (context.allocated_buffer_p,
context.allocated_buffer_size);
}
if (error_location != NULL)