From a177799807006b15341aa87b4f0ad9bb26c6b89c Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@atdot.net>
Date: Wed, 22 Oct 2025 04:47:18 +0900
Subject: [PATCH] catch up modular-gc

---
 gc.c                 | 19 +++++++++++++++++++
 gc/default/default.c | 19 ++++++++-----------
 gc/gc.h              |  2 ++
 gc/mmtk/mmtk.c       |  6 ++++++
 4 files changed, 35 insertions(+), 11 deletions(-)

diff --git a/gc.c b/gc.c
index 231f5fb388..53cfe839d5 100644
--- a/gc.c
+++ b/gc.c
@@ -2806,6 +2806,13 @@ mark_m_tbl(void *objspace, struct rb_id_table *tbl)
 
 bool rb_gc_impl_checking_shareable(void *objspace_ptr); // in defaut/deafult.c
 
+bool
+rb_gc_checking_shareable(void)
+{
+    return rb_gc_impl_checking_shareable(rb_gc_get_objspace());
+}
+
+
 static enum rb_id_table_iterator_result
 mark_const_entry_i(VALUE value, void *objspace)
 {
@@ -5420,6 +5427,18 @@ rb_gc_after_fork(rb_pid_t pid)
     rb_gc_impl_after_fork(rb_gc_get_objspace(), pid);
 }
 
+bool
+rb_gc_obj_shareable_p(VALUE obj)
+{
+    return RB_OBJ_SHAREABLE_P(obj);
+}
+
+void
+rb_gc_rp(VALUE obj)
+{
+    rp(obj);
+}
+
 /*
  * Document-module: ObjectSpace
  *
diff --git a/gc/default/default.c b/gc/default/default.c
index b1c3bbf1a6..0a9945cdac 100644
--- a/gc/default/default.c
+++ b/gc/default/default.c
@@ -1463,12 +1463,6 @@ rb_gc_impl_checking_shareable(void *objspace_ptr)
     return objspace->flags.check_shareable;
 }
 
-bool
-rb_gc_checking_shareable(void)
-{
-    return rb_gc_impl_checking_shareable(rb_gc_get_objspace());
-}
-
 bool
 rb_gc_impl_gc_enabled_p(void *objspace_ptr)
 {
@@ -4981,11 +4975,11 @@ check_shareable_i(const VALUE child, void *ptr)
 {
     struct verify_internal_consistency_struct *data = (struct verify_internal_consistency_struct *)ptr;
 
-    if (!RB_OBJ_SHAREABLE_P(child)) {
+    if (!rb_gc_obj_shareable_p(child)) {
         fprintf(stderr, "(a) ");
-        rp(data->parent);
+        rb_gc_rp(data->parent);
         fprintf(stderr, "(b) ");
-        rp(child);
+        rb_gc_rp(child);
         fprintf(stderr, "check_shareable_i: shareable (a) -> unshareable (b)\n");
 
         data->err_count++;
@@ -4999,11 +4993,14 @@ gc_verify_shareable(rb_objspace_t *objspace, VALUE obj, void *data)
     // while objspace->flags.check_shareable is true,
     // other Ractors should not run the GC, until the flag is not local.
     // TODO: remove VM locking if the flag is Ractor local
-    RB_VM_LOCKING() {
+
+    unsigned int lev = RB_GC_VM_LOCK();
+    {
         objspace->flags.check_shareable = true;
         rb_objspace_reachable_objects_from(obj, check_shareable_i, (void *)data);
         objspace->flags.check_shareable = false;
     }
+    RB_GC_VM_UNLOCK(lev);
 }
 
 // TODO: only one level (non-recursive)
@@ -5053,7 +5050,7 @@ verify_internal_consistency_i(void *page_start, void *page_end, size_t stride,
                     rb_objspace_reachable_objects_from(obj, check_generation_i, (void *)data);
                 }
 
-                if (!is_marking(objspace) && RB_OBJ_SHAREABLE_P(obj)) {
+                if (!is_marking(objspace) && rb_gc_obj_shareable_p(obj)) {
                     gc_verify_shareable(objspace, obj, data);
                 }
 
diff --git a/gc/gc.h b/gc/gc.h
index 8ca9987477..89219eb793 100644
--- a/gc/gc.h
+++ b/gc/gc.h
@@ -96,6 +96,8 @@ MODULAR_GC_FN bool rb_memerror_reentered(void);
 MODULAR_GC_FN bool rb_obj_id_p(VALUE);
 MODULAR_GC_FN void rb_gc_before_updating_jit_code(void);
 MODULAR_GC_FN void rb_gc_after_updating_jit_code(void);
+MODULAR_GC_FN bool rb_gc_obj_shareable_p(VALUE);
+MODULAR_GC_FN void rb_gc_rp(VALUE);
 
 #if USE_MODULAR_GC
 MODULAR_GC_FN bool rb_gc_event_hook_required_p(rb_event_flag_t event);
diff --git a/gc/mmtk/mmtk.c b/gc/mmtk/mmtk.c
index 9dd3129e01..5861f5e70f 100644
--- a/gc/mmtk/mmtk.c
+++ b/gc/mmtk/mmtk.c
@@ -1260,6 +1260,12 @@ rb_gc_impl_copy_attributes(void *objspace_ptr, VALUE dest, VALUE obj)
     rb_gc_impl_copy_finalizer(objspace_ptr, dest, obj);
 }
 
+bool
+rb_gc_impl_checking_shareable(void *ptr)
+{
+    return false;
+}
+
 // GC Identification
 
 const char *