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Avoid triggering GC while translating threaded code

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This commit is contained in:
Alan Wu 2020-09-22 18:24:55 -04:00
parent 5bcba2a5ee
commit 265c5ca8b1
2 changed files with 21 additions and 7 deletions
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27
compile.c
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@ -863,16 +863,19 @@ rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
const void * const *table = rb_vm_get_insns_address_table();
VALUE *encoded = (VALUE *)iseq->body->iseq_encoded;
VALUE translated_insns_buf;
unsigned int insn_idx;
unsigned int insn_idx, translated_idx;
unsigned int next_ujit_idx = 0;
unsigned int translated_len = 0;
bool ujit_disabled = false /*get_cmdline_flag()*/;
for (insn_idx = 0; insn_idx < iseq->body->iseq_size; /* */)
{
int insn = (int)iseq->body->iseq_encoded[insn_idx];
int len = insn_len(insn);
VALUE *translated_insns = ALLOCV_N(VALUE, translated_insns_buf, iseq->body->iseq_size);
for (insn_idx = 0; insn_idx < iseq->body->iseq_size; /* */) {
int insn = (int)encoded[insn_idx];
int len = insn_len(insn);
VALUE translated;
uint8_t* native_code_ptr = NULL;
@ -881,14 +884,24 @@ rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
native_code_ptr = ujit_compile_insn(iseq, insn_idx, &next_ujit_idx);
if (native_code_ptr)
encoded[insn_idx] = (VALUE)native_code_ptr;
translated = (VALUE)native_code_ptr;
else
encoded[insn_idx] = (VALUE)table[insn];
translated = (VALUE)table[insn];
translated_insns[translated_len++] = translated;
insn_idx += len;
}
insn_idx = 0;
for (translated_idx = 0; translated_idx < translated_len; translated_idx++) {
int insn = (int)encoded[insn_idx];
int len = insn_len(insn);
encoded[insn_idx] = translated_insns[translated_idx];
insn_idx += len;
}
FL_SET((VALUE)iseq, ISEQ_TRANSLATED);
ALLOCV_END(translated_insns_buf);
#endif
return COMPILE_OK;
}

1
iseq.c
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@ -163,6 +163,7 @@ static int
iseq_extract_values(VALUE *code, size_t pos, iseq_value_itr_t * func, void *data, rb_vm_insns_translator_t * translator)
{
VALUE insn = translator((void *)code[pos]);
if (insn >= VM_INSTRUCTION_SIZE) rb_bug("invalid insn. translator=%p addr2insn=%p", (void *)translator, (void*)rb_vm_insn_addr2insn2);
int len = insn_len(insn);
int op_no;
const char *types = insn_op_types(insn);