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call const_added after autoload

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When calling `const_added` while process in `autoload`, it can
cause synchronization issue because of a thread swithcing.

http://ci.rvm.jp/logfiles/brlog.trunk.20220407-152213#L489

```
1)
Module#autoload (concurrently) raises a LoadError in each thread if the file does not exist ERROR
NameError: uninitialized constant ModuleSpecs::Autoload::FileDoesNotExist

            ModuleSpecs::Autoload::FileDoesNotExist
                                 ^^^^^^^^^^^^^^^^^^
/tmp/ruby/v3/src/trunk/spec/ruby/core/module/autoload_spec.rb:965:in `block (5 levels) in <top (required)>'
```
This commit is contained in:
Koichi Sasada 2022-04-08 16:44:03 +09:00
parent 798e21637f
commit c77a31df5e
Notes: git 2022-04-08 21:30:52 +09:00 
Merged: https://github.com/ruby/ruby/pull/5780
1 changed files with 21 additions and 10 deletions
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31
variable.c
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@ -2239,6 +2239,9 @@ rb_autoload(VALUE mod, ID id, const char *file)
rb_autoload_str(mod, id, rb_fstring_cstr(file));
}
static void const_set(VALUE klass, ID id, VALUE val);
static void const_added(VALUE klass, ID const_name);
void
rb_autoload_str(VALUE mod, ID id, VALUE file)
{
@ -2263,7 +2266,7 @@ rb_autoload_str(VALUE mod, ID id, VALUE file)
return;
}
rb_const_set(mod, id, Qundef);
const_set(mod, id, Qundef);
tbl = RCLASS_IV_TBL(mod);
if (tbl && st_lookup(tbl, (st_data_t)autoload, &av)) {
tbl = check_autoload_table((VALUE)av);
@ -2307,6 +2310,8 @@ rb_autoload_str(VALUE mod, ID id, VALUE file)
ccan_list_add_tail(&ele->constants, &ac->cnode);
st_insert(tbl, (st_data_t)id, (st_data_t)acv);
}
const_added(mod, id);
}
static void
@ -3111,14 +3116,14 @@ const_added(VALUE klass, ID const_name)
}
}
void
rb_const_set(VALUE klass, ID id, VALUE val)
static void
const_set(VALUE klass, ID id, VALUE val)
{
rb_const_entry_t *ce;
if (NIL_P(klass)) {
rb_raise(rb_eTypeError, "no class/module to define constant %"PRIsVALUE"",
QUOTE_ID(id));
rb_raise(rb_eTypeError, "no class/module to define constant %"PRIsVALUE"",
QUOTE_ID(id));
}
if (!rb_ractor_main_p() && !rb_ractor_shareable_p(val)) {
@ -3156,10 +3161,10 @@ rb_const_set(VALUE klass, ID id, VALUE val)
int val_path_permanent;
VALUE val_path = classname(val, &val_path_permanent);
if (NIL_P(val_path) || !val_path_permanent) {
if (klass == rb_cObject) {
if (klass == rb_cObject) {
set_namespace_path(val, rb_id2str(id));
}
else {
}
else {
int parental_path_permanent;
VALUE parental_path = classname(klass, &parental_path_permanent);
if (NIL_P(parental_path)) {
@ -3172,9 +3177,15 @@ rb_const_set(VALUE klass, ID id, VALUE val)
else if (!parental_path_permanent && NIL_P(val_path)) {
ivar_set(val, tmp_classpath, build_const_path(parental_path, id));
}
}
}
}
}
}
}
void
rb_const_set(VALUE klass, ID id, VALUE val)
{
const_set(klass, id, val);
const_added(klass, id);
}