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iseq.c
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/**********************************************************************
iseq.c -
$Author$
created at: 2006-07-11(Tue) 09:00:03 +0900
Copyright (C) 2006 Koichi Sasada
**********************************************************************/
#define RUBY_VM_INSNS_INFO 1
/* #define RUBY_MARK_FREE_DEBUG 1 */
#include "ruby/internal/config.h"
#ifdef HAVE_DLADDR
# include <dlfcn.h>
#endif
#include "eval_intern.h"
#include "id_table.h"
#include "internal.h"
#include "internal/bits.h"
#include "internal/class.h"
#include "internal/compile.h"
#include "internal/error.h"
#include "internal/file.h"
#include "internal/gc.h"
#include "internal/hash.h"
#include "internal/io.h"
#include "internal/ruby_parser.h"
#include "internal/sanitizers.h"
#include "internal/symbol.h"
#include "internal/thread.h"
#include "internal/variable.h"
#include "iseq.h"
#include "ruby/util.h"
#include "vm_core.h"
#include "vm_callinfo.h"
#include "yjit.h"
#include "ruby/ractor.h"
#include "builtin.h"
#include "insns.inc"
#include "insns_info.inc"
VALUE rb_cISeq;
static VALUE iseqw_new(const rb_iseq_t *iseq);
static const rb_iseq_t *iseqw_check(VALUE iseqw);
#if VM_INSN_INFO_TABLE_IMPL == 2
static struct succ_index_table *succ_index_table_create(int max_pos, int *data, int size);
static unsigned int *succ_index_table_invert(int max_pos, struct succ_index_table *sd, int size);
static int succ_index_lookup(const struct succ_index_table *sd, int x);
#endif
#define hidden_obj_p(obj) (!SPECIAL_CONST_P(obj) && !RBASIC(obj)->klass)
static inline VALUE
obj_resurrect(VALUE obj)
{
if (hidden_obj_p(obj)) {
switch (BUILTIN_TYPE(obj)) {
case T_STRING:
obj = rb_str_resurrect(obj);
break;
case T_ARRAY:
obj = rb_ary_resurrect(obj);
break;
case T_HASH:
obj = rb_hash_resurrect(obj);
break;
default:
break;
}
}
return obj;
}
static void
free_arena(struct iseq_compile_data_storage *cur)
{
struct iseq_compile_data_storage *next;
while (cur) {
next = cur->next;
ruby_xfree(cur);
cur = next;
}
}
static void
compile_data_free(struct iseq_compile_data *compile_data)
{
if (compile_data) {
free_arena(compile_data->node.storage_head);
free_arena(compile_data->insn.storage_head);
if (compile_data->ivar_cache_table) {
rb_id_table_free(compile_data->ivar_cache_table);
}
ruby_xfree(compile_data);
}
}
static void
remove_from_constant_cache(ID id, IC ic)
{
rb_vm_t *vm = GET_VM();
VALUE lookup_result;
st_data_t ic_data = (st_data_t)ic;
if (rb_id_table_lookup(vm->constant_cache, id, &lookup_result)) {
st_table *ics = (st_table *)lookup_result;
st_delete(ics, &ic_data, NULL);
if (ics->num_entries == 0 &&
// See comment in vm_track_constant_cache on why we need this check
id != vm->inserting_constant_cache_id) {
rb_id_table_delete(vm->constant_cache, id);
st_free_table(ics);
}
}
}
// When an ISEQ is being freed, all of its associated ICs are going to go away
// as well. Because of this, we need to iterate over the ICs, and clear them
// from the VM's constant cache.
static void
iseq_clear_ic_references(const rb_iseq_t *iseq)
{
// In some cases (when there is a compilation error), we end up with
// ic_size greater than 0, but no allocated is_entries buffer.
// If there's no is_entries buffer to loop through, return early.
// [Bug #19173]
if (!ISEQ_BODY(iseq)->is_entries) {
return;
}
for (unsigned int ic_idx = 0; ic_idx < ISEQ_BODY(iseq)->ic_size; ic_idx++) {
IC ic = &ISEQ_IS_IC_ENTRY(ISEQ_BODY(iseq), ic_idx);
// Iterate over the IC's constant path's segments and clean any references to
// the ICs out of the VM's constant cache table.
const ID *segments = ic->segments;
// It's possible that segments is NULL if we overallocated an IC but
// optimizations removed the instruction using it
if (segments == NULL)
continue;
for (int i = 0; segments[i]; i++) {
ID id = segments[i];
if (id == idNULL) continue;
remove_from_constant_cache(id, ic);
}
ruby_xfree((void *)segments);
}
}
void
rb_iseq_free(const rb_iseq_t *iseq)
{
RUBY_FREE_ENTER("iseq");
if (iseq && ISEQ_BODY(iseq)) {
iseq_clear_ic_references(iseq);
struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
#if USE_YJIT
rb_yjit_iseq_free(iseq);
if (FL_TEST_RAW((VALUE)iseq, ISEQ_TRANSLATED)) {
RUBY_ASSERT(rb_yjit_live_iseq_count > 0);
rb_yjit_live_iseq_count--;
}
#endif
ruby_xfree((void *)body->iseq_encoded);
ruby_xfree((void *)body->insns_info.body);
ruby_xfree((void *)body->insns_info.positions);
#if VM_INSN_INFO_TABLE_IMPL == 2
ruby_xfree(body->insns_info.succ_index_table);
#endif
ruby_xfree((void *)body->is_entries);
ruby_xfree(body->call_data);
ruby_xfree((void *)body->catch_table);
ruby_xfree((void *)body->param.opt_table);
if (ISEQ_MBITS_BUFLEN(body->iseq_size) > 1 && body->mark_bits.list) {
ruby_xfree((void *)body->mark_bits.list);
}
ruby_xfree(body->variable.original_iseq);
if (body->param.keyword != NULL) {
if (body->param.keyword->table != &body->local_table[body->param.keyword->bits_start - body->param.keyword->num])
ruby_xfree((void *)body->param.keyword->table);
if (body->param.keyword->default_values) {
ruby_xfree((void *)body->param.keyword->default_values);
}
ruby_xfree((void *)body->param.keyword);
}
if (LIKELY(body->local_table != rb_iseq_shared_exc_local_tbl))
ruby_xfree((void *)body->local_table);
compile_data_free(ISEQ_COMPILE_DATA(iseq));
if (body->outer_variables) rb_id_table_free(body->outer_variables);
ruby_xfree(body);
}
if (iseq && ISEQ_EXECUTABLE_P(iseq) && iseq->aux.exec.local_hooks) {
rb_hook_list_free(iseq->aux.exec.local_hooks);
}
RUBY_FREE_LEAVE("iseq");
}
typedef VALUE iseq_value_itr_t(void *ctx, VALUE obj);
static inline void
iseq_scan_bits(unsigned int page, iseq_bits_t bits, VALUE *code, VALUE *original_iseq)
{
unsigned int offset;
unsigned int page_offset = (page * ISEQ_MBITS_BITLENGTH);
while (bits) {
offset = ntz_intptr(bits);
VALUE op = code[page_offset + offset];
rb_gc_mark_and_move(&code[page_offset + offset]);
VALUE newop = code[page_offset + offset];
if (original_iseq && newop != op) {
original_iseq[page_offset + offset] = newop;
}
bits &= bits - 1; // Reset Lowest Set Bit (BLSR)
}
}
static void
rb_iseq_mark_and_move_each_compile_data_value(const rb_iseq_t *iseq, VALUE *original_iseq)
{
unsigned int size;
VALUE *code;
const struct iseq_compile_data *const compile_data = ISEQ_COMPILE_DATA(iseq);
size = compile_data->iseq_size;
code = compile_data->iseq_encoded;
// Embedded VALUEs
if (compile_data->mark_bits.list) {
if(compile_data->is_single_mark_bit) {
iseq_scan_bits(0, compile_data->mark_bits.single, code, original_iseq);
}
else {
for (unsigned int i = 0; i < ISEQ_MBITS_BUFLEN(size); i++) {
iseq_bits_t bits = compile_data->mark_bits.list[i];
iseq_scan_bits(i, bits, code, original_iseq);
}
}
}
}
static void
rb_iseq_mark_and_move_each_body_value(const rb_iseq_t *iseq, VALUE *original_iseq)
{
unsigned int size;
VALUE *code;
const struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
size = body->iseq_size;
code = body->iseq_encoded;
union iseq_inline_storage_entry *is_entries = body->is_entries;
if (body->is_entries) {
// Skip iterating over ivc caches
is_entries += body->ivc_size;
// ICVARC entries
for (unsigned int i = 0; i < body->icvarc_size; i++, is_entries++) {
ICVARC icvarc = (ICVARC)is_entries;
if (icvarc->entry) {
RUBY_ASSERT(!RB_TYPE_P(icvarc->entry->class_value, T_NONE));
rb_gc_mark_and_move(&icvarc->entry->class_value);
}
}
// ISE entries
for (unsigned int i = 0; i < body->ise_size; i++, is_entries++) {
union iseq_inline_storage_entry *const is = (union iseq_inline_storage_entry *)is_entries;
if (is->once.value) {
rb_gc_mark_and_move(&is->once.value);
}
}
// IC Entries
for (unsigned int i = 0; i < body->ic_size; i++, is_entries++) {
IC ic = (IC)is_entries;
if (ic->entry) {
rb_gc_mark_and_move_ptr(&ic->entry);
}
}
}
// Embedded VALUEs
if (body->mark_bits.list) {
if (ISEQ_MBITS_BUFLEN(size) == 1) {
iseq_scan_bits(0, body->mark_bits.single, code, original_iseq);
}
else {
for (unsigned int i = 0; i < ISEQ_MBITS_BUFLEN(size); i++) {
iseq_bits_t bits = body->mark_bits.list[i];
iseq_scan_bits(i, bits, code, original_iseq);
}
}
}
}
static bool
cc_is_active(const struct rb_callcache *cc, bool reference_updating)
{
if (cc) {
if (cc == rb_vm_empty_cc() || rb_vm_empty_cc_for_super()) {
return false;
}
if (reference_updating) {
cc = (const struct rb_callcache *)rb_gc_location((VALUE)cc);
}
if (vm_cc_markable(cc)) {
if (cc->klass) { // cc is not invalidated
const struct rb_callable_method_entry_struct *cme = vm_cc_cme(cc);
if (reference_updating) {
cme = (const struct rb_callable_method_entry_struct *)rb_gc_location((VALUE)cme);
}
if (!METHOD_ENTRY_INVALIDATED(cme)) {
return true;
}
}
}
}
return false;
}
void
rb_iseq_mark_and_move(rb_iseq_t *iseq, bool reference_updating)
{
RUBY_MARK_ENTER("iseq");
rb_gc_mark_and_move(&iseq->wrapper);
if (ISEQ_BODY(iseq)) {
struct rb_iseq_constant_body *body = ISEQ_BODY(iseq);
rb_iseq_mark_and_move_each_body_value(iseq, reference_updating ? ISEQ_ORIGINAL_ISEQ(iseq) : NULL);
rb_gc_mark_and_move(&body->variable.coverage);
rb_gc_mark_and_move(&body->variable.pc2branchindex);
rb_gc_mark_and_move(&body->variable.script_lines);
rb_gc_mark_and_move(&body->location.label);
rb_gc_mark_and_move(&body->location.base_label);
rb_gc_mark_and_move(&body->location.pathobj);
if (body->local_iseq) rb_gc_mark_and_move_ptr(&body->local_iseq);
if (body->parent_iseq) rb_gc_mark_and_move_ptr(&body->parent_iseq);
if (body->mandatory_only_iseq) rb_gc_mark_and_move_ptr(&body->mandatory_only_iseq);
if (body->call_data) {
for (unsigned int i = 0; i < body->ci_size; i++) {
struct rb_call_data *cds = body->call_data;
if (cds[i].ci) rb_gc_mark_and_move_ptr(&cds[i].ci);
if (cc_is_active(cds[i].cc, reference_updating)) {
rb_gc_mark_and_move_ptr(&cds[i].cc);
}
else if (cds[i].cc != rb_vm_empty_cc()) {
cds[i].cc = rb_vm_empty_cc();
}
}
}
if (body->param.flags.has_kw && body->param.keyword != NULL) {
const struct rb_iseq_param_keyword *const keyword = body->param.keyword;
if (keyword->default_values != NULL) {
for (int j = 0, i = keyword->required_num; i < keyword->num; i++, j++) {
rb_gc_mark_and_move(&keyword->default_values[j]);
}
}
}
if (body->catch_table) {
struct iseq_catch_table *table = body->catch_table;
for (unsigned int i = 0; i < table->size; i++) {
struct iseq_catch_table_entry *entry;
entry = UNALIGNED_MEMBER_PTR(table, entries[i]);
if (entry->iseq) {
rb_gc_mark_and_move_ptr(&entry->iseq);
}
}
}
if (reference_updating) {
#if USE_YJIT
rb_yjit_iseq_update_references(iseq);
#endif
}
else {
#if USE_YJIT
rb_yjit_iseq_mark(body->yjit_payload);
#endif
}
}
if (FL_TEST_RAW((VALUE)iseq, ISEQ_NOT_LOADED_YET)) {
rb_gc_mark_and_move(&iseq->aux.loader.obj);
}
else if (FL_TEST_RAW((VALUE)iseq, ISEQ_USE_COMPILE_DATA)) {
const struct iseq_compile_data *const compile_data = ISEQ_COMPILE_DATA(iseq);
rb_iseq_mark_and_move_insn_storage(compile_data->insn.storage_head);
rb_iseq_mark_and_move_each_compile_data_value(iseq, reference_updating ? ISEQ_ORIGINAL_ISEQ(iseq) : NULL);
rb_gc_mark_and_move((VALUE *)&compile_data->err_info);
rb_gc_mark_and_move((VALUE *)&compile_data->catch_table_ary);
}
else {
/* executable */
VM_ASSERT(ISEQ_EXECUTABLE_P(iseq));
if (iseq->aux.exec.local_hooks) {
rb_hook_list_mark_and_update(iseq->aux.exec.local_hooks);
}
}
RUBY_MARK_LEAVE("iseq");
}
static size_t
param_keyword_size(const struct rb_iseq_param_keyword *pkw)
{
size_t size = 0;
if (!pkw) return size;
size += sizeof(struct rb_iseq_param_keyword);
size += sizeof(VALUE) * (pkw->num - pkw->required_num);
return size;
}
size_t
rb_iseq_memsize(const rb_iseq_t *iseq)
{
size_t size = 0; /* struct already counted as RVALUE size */
const struct rb_iseq_constant_body *body = ISEQ_BODY(iseq);
const struct iseq_compile_data *compile_data;
/* TODO: should we count original_iseq? */
if (ISEQ_EXECUTABLE_P(iseq) && body) {
size += sizeof(struct rb_iseq_constant_body);
size += body->iseq_size * sizeof(VALUE);
size += body->insns_info.size * (sizeof(struct iseq_insn_info_entry) + sizeof(unsigned int));
size += body->local_table_size * sizeof(ID);
size += ISEQ_MBITS_BUFLEN(body->iseq_size) * ISEQ_MBITS_SIZE;
if (body->catch_table) {
size += iseq_catch_table_bytes(body->catch_table->size);
}
size += (body->param.opt_num + 1) * sizeof(VALUE);
size += param_keyword_size(body->param.keyword);
/* body->is_entries */
size += ISEQ_IS_SIZE(body) * sizeof(union iseq_inline_storage_entry);
if (ISEQ_BODY(iseq)->is_entries) {
/* IC entries constant segments */
for (unsigned int ic_idx = 0; ic_idx < body->ic_size; ic_idx++) {
IC ic = &ISEQ_IS_IC_ENTRY(body, ic_idx);
const ID *ids = ic->segments;
if (!ids) continue;
while (*ids++) {
size += sizeof(ID);
}
size += sizeof(ID); // null terminator
}
}
/* body->call_data */
size += body->ci_size * sizeof(struct rb_call_data);
// TODO: should we count imemo_callinfo?
}
compile_data = ISEQ_COMPILE_DATA(iseq);
if (compile_data) {
struct iseq_compile_data_storage *cur;
size += sizeof(struct iseq_compile_data);
cur = compile_data->node.storage_head;
while (cur) {
size += cur->size + offsetof(struct iseq_compile_data_storage, buff);
cur = cur->next;
}
}
return size;
}
struct rb_iseq_constant_body *
rb_iseq_constant_body_alloc(void)
{
struct rb_iseq_constant_body *iseq_body;
iseq_body = ZALLOC(struct rb_iseq_constant_body);
return iseq_body;
}
static rb_iseq_t *
iseq_alloc(void)
{
rb_iseq_t *iseq = iseq_imemo_alloc();
ISEQ_BODY(iseq) = rb_iseq_constant_body_alloc();
return iseq;
}
VALUE
rb_iseq_pathobj_new(VALUE path, VALUE realpath)
{
VALUE pathobj;
VM_ASSERT(RB_TYPE_P(path, T_STRING));
VM_ASSERT(NIL_P(realpath) || RB_TYPE_P(realpath, T_STRING));
if (path == realpath ||
(!NIL_P(realpath) && rb_str_cmp(path, realpath) == 0)) {
pathobj = rb_fstring(path);
}
else {
if (!NIL_P(realpath)) realpath = rb_fstring(realpath);
pathobj = rb_ary_new_from_args(2, rb_fstring(path), realpath);
rb_ary_freeze(pathobj);
}
return pathobj;
}
void
rb_iseq_pathobj_set(const rb_iseq_t *iseq, VALUE path, VALUE realpath)
{
RB_OBJ_WRITE(iseq, &ISEQ_BODY(iseq)->location.pathobj,
rb_iseq_pathobj_new(path, realpath));
}
// Make a dummy iseq for a dummy frame that exposes a path for profilers to inspect
rb_iseq_t *
rb_iseq_alloc_with_dummy_path(VALUE fname)
{
rb_iseq_t *dummy_iseq = iseq_alloc();
ISEQ_BODY(dummy_iseq)->type = ISEQ_TYPE_TOP;
RB_OBJ_WRITE(dummy_iseq, &ISEQ_BODY(dummy_iseq)->location.pathobj, fname);
RB_OBJ_WRITE(dummy_iseq, &ISEQ_BODY(dummy_iseq)->location.label, fname);
return dummy_iseq;
}
static rb_iseq_location_t *
iseq_location_setup(rb_iseq_t *iseq, VALUE name, VALUE path, VALUE realpath, int first_lineno, const rb_code_location_t *code_location, const int node_id)
{
rb_iseq_location_t *loc = &ISEQ_BODY(iseq)->location;
rb_iseq_pathobj_set(iseq, path, realpath);
RB_OBJ_WRITE(iseq, &loc->label, name);
RB_OBJ_WRITE(iseq, &loc->base_label, name);
loc->first_lineno = first_lineno;
if (ISEQ_BODY(iseq)->local_iseq == iseq && strcmp(RSTRING_PTR(name), "initialize") == 0) {
ISEQ_BODY(iseq)->param.flags.use_block = 1;
}
if (code_location) {
loc->node_id = node_id;
loc->code_location = *code_location;
}
else {
loc->code_location.beg_pos.lineno = 0;
loc->code_location.beg_pos.column = 0;
loc->code_location.end_pos.lineno = -1;
loc->code_location.end_pos.column = -1;
}
return loc;
}
static void
set_relation(rb_iseq_t *iseq, const rb_iseq_t *piseq)
{
struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
const VALUE type = body->type;
/* set class nest stack */
if (type == ISEQ_TYPE_TOP) {
body->local_iseq = iseq;
}
else if (type == ISEQ_TYPE_METHOD || type == ISEQ_TYPE_CLASS) {
body->local_iseq = iseq;
}
else if (piseq) {
body->local_iseq = ISEQ_BODY(piseq)->local_iseq;
}
if (piseq) {
body->parent_iseq = piseq;
}
if (type == ISEQ_TYPE_MAIN) {
body->local_iseq = iseq;
}
}
static struct iseq_compile_data_storage *
new_arena(void)
{
struct iseq_compile_data_storage * new_arena =
(struct iseq_compile_data_storage *)
ALLOC_N(char, INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE +
offsetof(struct iseq_compile_data_storage, buff));
new_arena->pos = 0;
new_arena->next = 0;
new_arena->size = INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE;
return new_arena;
}
static VALUE
prepare_iseq_build(rb_iseq_t *iseq,
VALUE name, VALUE path, VALUE realpath, int first_lineno, const rb_code_location_t *code_location, const int node_id,
const rb_iseq_t *parent, int isolated_depth, enum rb_iseq_type type,
VALUE script_lines, const rb_compile_option_t *option)
{
VALUE coverage = Qfalse;
VALUE err_info = Qnil;
struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
if (parent && (type == ISEQ_TYPE_MAIN || type == ISEQ_TYPE_TOP))
err_info = Qfalse;
body->type = type;
set_relation(iseq, parent);
name = rb_fstring(name);
iseq_location_setup(iseq, name, path, realpath, first_lineno, code_location, node_id);
if (iseq != body->local_iseq) {
RB_OBJ_WRITE(iseq, &body->location.base_label, ISEQ_BODY(body->local_iseq)->location.label);
}
ISEQ_COVERAGE_SET(iseq, Qnil);
ISEQ_ORIGINAL_ISEQ_CLEAR(iseq);
body->variable.flip_count = 0;
if (NIL_P(script_lines)) {
RB_OBJ_WRITE(iseq, &body->variable.script_lines, Qnil);
}
else {
RB_OBJ_WRITE(iseq, &body->variable.script_lines, rb_ractor_make_shareable(script_lines));
}
ISEQ_COMPILE_DATA_ALLOC(iseq);
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, err_info);
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->catch_table_ary, Qnil);
ISEQ_COMPILE_DATA(iseq)->node.storage_head = ISEQ_COMPILE_DATA(iseq)->node.storage_current = new_arena();
ISEQ_COMPILE_DATA(iseq)->insn.storage_head = ISEQ_COMPILE_DATA(iseq)->insn.storage_current = new_arena();
ISEQ_COMPILE_DATA(iseq)->isolated_depth = isolated_depth;
ISEQ_COMPILE_DATA(iseq)->option = option;
ISEQ_COMPILE_DATA(iseq)->ivar_cache_table = NULL;
ISEQ_COMPILE_DATA(iseq)->builtin_function_table = GET_VM()->builtin_function_table;
if (option->coverage_enabled) {
VALUE coverages = rb_get_coverages();
if (RTEST(coverages)) {
coverage = rb_hash_lookup(coverages, rb_iseq_path(iseq));
if (NIL_P(coverage)) coverage = Qfalse;
}
}
ISEQ_COVERAGE_SET(iseq, coverage);
if (coverage && ISEQ_BRANCH_COVERAGE(iseq))
ISEQ_PC2BRANCHINDEX_SET(iseq, rb_ary_hidden_new(0));
return Qtrue;
}
#if VM_CHECK_MODE > 0 && VM_INSN_INFO_TABLE_IMPL > 0
static void validate_get_insn_info(const rb_iseq_t *iseq);
#endif
void
rb_iseq_insns_info_encode_positions(const rb_iseq_t *iseq)
{
#if VM_INSN_INFO_TABLE_IMPL == 2
/* create succ_index_table */
struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
int size = body->insns_info.size;
int max_pos = body->iseq_size;
int *data = (int *)body->insns_info.positions;
if (body->insns_info.succ_index_table) ruby_xfree(body->insns_info.succ_index_table);
body->insns_info.succ_index_table = succ_index_table_create(max_pos, data, size);
#if VM_CHECK_MODE == 0
ruby_xfree(body->insns_info.positions);
body->insns_info.positions = NULL;
#endif
#endif
}
#if VM_INSN_INFO_TABLE_IMPL == 2
unsigned int *
rb_iseq_insns_info_decode_positions(const struct rb_iseq_constant_body *body)
{
int size = body->insns_info.size;
int max_pos = body->iseq_size;
struct succ_index_table *sd = body->insns_info.succ_index_table;
return succ_index_table_invert(max_pos, sd, size);
}
#endif
void
rb_iseq_init_trace(rb_iseq_t *iseq)
{
iseq->aux.exec.global_trace_events = 0;
if (ruby_vm_event_enabled_global_flags & ISEQ_TRACE_EVENTS) {
rb_iseq_trace_set(iseq, ruby_vm_event_enabled_global_flags & ISEQ_TRACE_EVENTS);
}
}
static VALUE
finish_iseq_build(rb_iseq_t *iseq)
{
struct iseq_compile_data *data = ISEQ_COMPILE_DATA(iseq);
const struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
VALUE err = data->err_info;
ISEQ_COMPILE_DATA_CLEAR(iseq);
compile_data_free(data);
#if VM_CHECK_MODE > 0 && VM_INSN_INFO_TABLE_IMPL > 0
validate_get_insn_info(iseq);
#endif
if (RTEST(err)) {
VALUE path = pathobj_path(body->location.pathobj);
if (err == Qtrue) err = rb_exc_new_cstr(rb_eSyntaxError, "compile error");
rb_funcallv(err, rb_intern("set_backtrace"), 1, &path);
rb_exc_raise(err);
}
RB_DEBUG_COUNTER_INC(iseq_num);
RB_DEBUG_COUNTER_ADD(iseq_cd_num, ISEQ_BODY(iseq)->ci_size);
rb_iseq_init_trace(iseq);
return Qtrue;
}
static rb_compile_option_t COMPILE_OPTION_DEFAULT = {
.inline_const_cache = OPT_INLINE_CONST_CACHE,
.peephole_optimization = OPT_PEEPHOLE_OPTIMIZATION,
.tailcall_optimization = OPT_TAILCALL_OPTIMIZATION,
.specialized_instruction = OPT_SPECIALISED_INSTRUCTION,
.operands_unification = OPT_OPERANDS_UNIFICATION,
.instructions_unification = OPT_INSTRUCTIONS_UNIFICATION,
.frozen_string_literal = OPT_FROZEN_STRING_LITERAL,
.debug_frozen_string_literal = OPT_DEBUG_FROZEN_STRING_LITERAL,
.coverage_enabled = TRUE,
};
static const rb_compile_option_t COMPILE_OPTION_FALSE = {
.frozen_string_literal = -1, // unspecified
};
int
rb_iseq_opt_frozen_string_literal(void)
{
return COMPILE_OPTION_DEFAULT.frozen_string_literal;
}
static void
set_compile_option_from_hash(rb_compile_option_t *option, VALUE opt)
{
#define SET_COMPILE_OPTION(o, h, mem) \
{ VALUE flag = rb_hash_aref((h), ID2SYM(rb_intern(#mem))); \
if (flag == Qtrue) { (o)->mem = 1; } \
else if (flag == Qfalse) { (o)->mem = 0; } \
}
#define SET_COMPILE_OPTION_NUM(o, h, mem) \
{ VALUE num = rb_hash_aref((h), ID2SYM(rb_intern(#mem))); \
if (!NIL_P(num)) (o)->mem = NUM2INT(num); \
}
SET_COMPILE_OPTION(option, opt, inline_const_cache);
SET_COMPILE_OPTION(option, opt, peephole_optimization);
SET_COMPILE_OPTION(option, opt, tailcall_optimization);
SET_COMPILE_OPTION(option, opt, specialized_instruction);
SET_COMPILE_OPTION(option, opt, operands_unification);
SET_COMPILE_OPTION(option, opt, instructions_unification);
SET_COMPILE_OPTION(option, opt, frozen_string_literal);
SET_COMPILE_OPTION(option, opt, debug_frozen_string_literal);
SET_COMPILE_OPTION(option, opt, coverage_enabled);
SET_COMPILE_OPTION_NUM(option, opt, debug_level);
#undef SET_COMPILE_OPTION
#undef SET_COMPILE_OPTION_NUM
}
static rb_compile_option_t *
set_compile_option_from_ast(rb_compile_option_t *option, const rb_ast_body_t *ast)
{
#define SET_COMPILE_OPTION(o, a, mem) \
((a)->mem < 0 ? 0 : ((o)->mem = (a)->mem > 0))
SET_COMPILE_OPTION(option, ast, coverage_enabled);
#undef SET_COMPILE_OPTION
if (ast->frozen_string_literal >= 0) {
option->frozen_string_literal = ast->frozen_string_literal;
}
return option;
}
static void
make_compile_option(rb_compile_option_t *option, VALUE opt)
{
if (NIL_P(opt)) {
*option = COMPILE_OPTION_DEFAULT;
}
else if (opt == Qfalse) {
*option = COMPILE_OPTION_FALSE;
}
else if (opt == Qtrue) {
int i;
for (i = 0; i < (int)(sizeof(rb_compile_option_t) / sizeof(int)); ++i)
((int *)option)[i] = 1;
}
else if (RB_TYPE_P(opt, T_HASH)) {
*option = COMPILE_OPTION_DEFAULT;
set_compile_option_from_hash(option, opt);
}
else {
rb_raise(rb_eTypeError, "Compile option must be Hash/true/false/nil");
}
}
static VALUE
make_compile_option_value(rb_compile_option_t *option)
{
VALUE opt = rb_hash_new_with_size(11);
#define SET_COMPILE_OPTION(o, h, mem) \
rb_hash_aset((h), ID2SYM(rb_intern(#mem)), RBOOL((o)->mem))
#define SET_COMPILE_OPTION_NUM(o, h, mem) \
rb_hash_aset((h), ID2SYM(rb_intern(#mem)), INT2NUM((o)->mem))
{
SET_COMPILE_OPTION(option, opt, inline_const_cache);
SET_COMPILE_OPTION(option, opt, peephole_optimization);
SET_COMPILE_OPTION(option, opt, tailcall_optimization);
SET_COMPILE_OPTION(option, opt, specialized_instruction);
SET_COMPILE_OPTION(option, opt, operands_unification);
SET_COMPILE_OPTION(option, opt, instructions_unification);
SET_COMPILE_OPTION(option, opt, debug_frozen_string_literal);
SET_COMPILE_OPTION(option, opt, coverage_enabled);
SET_COMPILE_OPTION_NUM(option, opt, debug_level);
}
#undef SET_COMPILE_OPTION
#undef SET_COMPILE_OPTION_NUM
VALUE frozen_string_literal = option->frozen_string_literal == -1 ? Qnil : RBOOL(option->frozen_string_literal);
rb_hash_aset(opt, ID2SYM(rb_intern("frozen_string_literal")), frozen_string_literal);
return opt;
}
rb_iseq_t *
rb_iseq_new(const VALUE ast_value, VALUE name, VALUE path, VALUE realpath,
const rb_iseq_t *parent, enum rb_iseq_type type)
{
return rb_iseq_new_with_opt(ast_value, name, path, realpath, 0, parent,
0, type, &COMPILE_OPTION_DEFAULT,
Qnil);
}
static int
ast_line_count(const VALUE ast_value)
{
rb_ast_t *ast = rb_ruby_ast_data_get(ast_value);
return ast->body.line_count;
}
static VALUE
iseq_setup_coverage(VALUE coverages, VALUE path, int line_count)
{
if (line_count >= 0) {
int len = (rb_get_coverage_mode() & COVERAGE_TARGET_ONESHOT_LINES) ? 0 : line_count;
VALUE coverage = rb_default_coverage(len);
rb_hash_aset(coverages, path, coverage);
return coverage;
}
return Qnil;
}
static inline void
iseq_new_setup_coverage(VALUE path, int line_count)
{
VALUE coverages = rb_get_coverages();
if (RTEST(coverages)) {
iseq_setup_coverage(coverages, path, line_count);
}
}
rb_iseq_t *
rb_iseq_new_top(const VALUE ast_value, VALUE name, VALUE path, VALUE realpath, const rb_iseq_t *parent)
{
iseq_new_setup_coverage(path, ast_line_count(ast_value));
return rb_iseq_new_with_opt(ast_value, name, path, realpath, 0, parent, 0,
ISEQ_TYPE_TOP, &COMPILE_OPTION_DEFAULT,
Qnil);
}
/**
* The main entry-point into the prism compiler when a file is required.
*/
rb_iseq_t *
pm_iseq_new_top(pm_scope_node_t *node, VALUE name, VALUE path, VALUE realpath, const rb_iseq_t *parent, int *error_state)
{
iseq_new_setup_coverage(path, (int) (node->parser->newline_list.size - 1));
return pm_iseq_new_with_opt(node, name, path, realpath, 0, parent, 0,
ISEQ_TYPE_TOP, &COMPILE_OPTION_DEFAULT, error_state);
}
rb_iseq_t *
rb_iseq_new_main(const VALUE ast_value, VALUE path, VALUE realpath, const rb_iseq_t *parent, int opt)
{
iseq_new_setup_coverage(path, ast_line_count(ast_value));
return rb_iseq_new_with_opt(ast_value, rb_fstring_lit("<main>"),
path, realpath, 0,
parent, 0, ISEQ_TYPE_MAIN, opt ? &COMPILE_OPTION_DEFAULT : &COMPILE_OPTION_FALSE,
Qnil);
}
/**
* The main entry-point into the prism compiler when a file is executed as the
* main file in the program.
*/
rb_iseq_t *
pm_iseq_new_main(pm_scope_node_t *node, VALUE path, VALUE realpath, const rb_iseq_t *parent, int opt, int *error_state)
{
iseq_new_setup_coverage(path, (int) (node->parser->newline_list.size - 1));
return pm_iseq_new_with_opt(node, rb_fstring_lit("<main>"),
path, realpath, 0,
parent, 0, ISEQ_TYPE_MAIN, opt ? &COMPILE_OPTION_DEFAULT : &COMPILE_OPTION_FALSE, error_state);
}
rb_iseq_t *
rb_iseq_new_eval(const VALUE ast_value, VALUE name, VALUE path, VALUE realpath, int first_lineno, const rb_iseq_t *parent, int isolated_depth)
{
if (rb_get_coverage_mode() & COVERAGE_TARGET_EVAL) {
VALUE coverages = rb_get_coverages();
if (RTEST(coverages) && RTEST(path) && !RTEST(rb_hash_has_key(coverages, path))) {
iseq_setup_coverage(coverages, path, ast_line_count(ast_value) + first_lineno - 1);
}
}
return rb_iseq_new_with_opt(ast_value, name, path, realpath, first_lineno,
parent, isolated_depth, ISEQ_TYPE_EVAL, &COMPILE_OPTION_DEFAULT,
Qnil);
}
rb_iseq_t *
pm_iseq_new_eval(pm_scope_node_t *node, VALUE name, VALUE path, VALUE realpath,
int first_lineno, const rb_iseq_t *parent, int isolated_depth, int *error_state)
{
if (rb_get_coverage_mode() & COVERAGE_TARGET_EVAL) {
VALUE coverages = rb_get_coverages();
if (RTEST(coverages) && RTEST(path) && !RTEST(rb_hash_has_key(coverages, path))) {
iseq_setup_coverage(coverages, path, ((int) (node->parser->newline_list.size - 1)) + first_lineno - 1);
}
}
return pm_iseq_new_with_opt(node, name, path, realpath, first_lineno,
parent, isolated_depth, ISEQ_TYPE_EVAL, &COMPILE_OPTION_DEFAULT, error_state);
}
static inline rb_iseq_t *
iseq_translate(rb_iseq_t *iseq)
{
if (rb_respond_to(rb_cISeq, rb_intern("translate"))) {
VALUE v1 = iseqw_new(iseq);
VALUE v2 = rb_funcall(rb_cISeq, rb_intern("translate"), 1, v1);
if (v1 != v2 && CLASS_OF(v2) == rb_cISeq) {
iseq = (rb_iseq_t *)iseqw_check(v2);
}
}
return iseq;
}
rb_iseq_t *
rb_iseq_new_with_opt(VALUE ast_value, VALUE name, VALUE path, VALUE realpath,