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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/ecma/base/ecma-helpers.c
+7 -6
View File
@@ -1316,12 +1316,12 @@ void
ecma_bytecode_ref (ecma_compiled_code_t *bytecode_p) /**< byte code pointer */
{
/* Abort program if maximum reference number is reached. */
if ((bytecode_p->status_flags >> ECMA_BYTECODE_REF_SHIFT) >= 0x3ff)
if (bytecode_p->refs >= UINT16_MAX)
{
jerry_fatal (ERR_REF_COUNT_LIMIT);
}
bytecode_p->status_flags = (uint16_t) (bytecode_p->status_flags + (1u << ECMA_BYTECODE_REF_SHIFT));
bytecode_p->refs++;
} /* ecma_bytecode_ref */
/**
@@ -1331,11 +1331,11 @@ ecma_bytecode_ref (ecma_compiled_code_t *bytecode_p) /**< byte code pointer */
void
ecma_bytecode_deref (ecma_compiled_code_t *bytecode_p) /**< byte code pointer */
{
JERRY_ASSERT ((bytecode_p->status_flags >> ECMA_BYTECODE_REF_SHIFT) > 0);
JERRY_ASSERT (bytecode_p->refs > 0);
bytecode_p->status_flags = (uint16_t) (bytecode_p->status_flags - (1u << ECMA_BYTECODE_REF_SHIFT));
bytecode_p->refs--;
if (bytecode_p->status_flags >= (1u << ECMA_BYTECODE_REF_SHIFT))
if (bytecode_p->refs > 0)
{
/* Non-zero reference counter. */
return;
@@ -1388,7 +1388,8 @@ ecma_bytecode_deref (ecma_compiled_code_t *bytecode_p) /**< byte code pointer */
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_REGEXP_BUILTIN */
}
mem_heap_free_block_size_stored (bytecode_p);
mem_heap_free_block (bytecode_p,
((size_t) bytecode_p->size) << MEM_ALIGNMENT_LOG);
} /* ecma_bytecode_deref */
/**