introduce `rb_ec_check_ints()`

to avoid TLS issue with N:M threads.

internal/thread.h

@@ -66,6 +66,8 @@ struct rb_io_close_wait_list {
 int rb_notify_fd_close(int fd, struct rb_io_close_wait_list *busy);
 void rb_notify_fd_close_wait(struct rb_io_close_wait_list *busy);
 
+void rb_ec_check_ints(struct rb_execution_context_struct *ec);
+
 RUBY_SYMBOL_EXPORT_BEGIN
 
 void *rb_thread_prevent_fork(void *(*func)(void *), void *data); /* for ext/socket/raddrinfo.c */

ractor.c

@@ -602,7 +602,7 @@ ractor_check_ints(rb_execution_context_t *ec, rb_ractor_t *cr, ractor_sleep_clea
                 enum ruby_tag_type state;
                 EC_PUSH_TAG(ec);
                 if ((state = EC_EXEC_TAG()) == TAG_NONE) {
-                    rb_thread_check_ints();
+                    rb_ec_check_ints(ec);
                 }
                 EC_POP_TAG();
 
@@ -612,7 +612,7 @@ ractor_check_ints(rb_execution_context_t *ec, rb_ractor_t *cr, ractor_sleep_clea
                 }
             }
             else {
-                rb_thread_check_ints();
+                rb_ec_check_ints(ec);
             }
         }
 

thread.c

@@ -1416,6 +1416,12 @@ rb_thread_wait_for(struct timeval time)
     sleep_hrtime(th, rb_timeval2hrtime(&time), SLEEP_SPURIOUS_CHECK);
 }
 
+void
+rb_ec_check_ints(rb_execution_context_t *ec)
+{
+    RUBY_VM_CHECK_INTS_BLOCKING(ec);
+}
+
 /*
  * CAUTION: This function causes thread switching.
  *          rb_thread_check_ints() check ruby's interrupts.
@@ -1426,7 +1432,7 @@ rb_thread_wait_for(struct timeval time)
 void
 rb_thread_check_ints(void)
 {
-    RUBY_VM_CHECK_INTS_BLOCKING(GET_EC());
+    rb_ec_check_ints(GET_EC());
 }
 
 /*