rb_thread_shield_waiting 4338 thread.c           unsigned int w = rb_thread_shield_waiting(b);
rb_thread_shield_waiting 4349 thread.c           unsigned int w = rb_thread_shield_waiting(b);
rb_thread_shield_waiting 4386 thread.c           return rb_thread_shield_waiting(self) > 0 ? Qnil : Qfalse;
rb_thread_shield_waiting 4406 thread.c           return rb_thread_shield_waiting(self) > 0 ? Qtrue : Qfalse;
rb_thread_shield_waiting 4418 thread.c           return rb_thread_shield_waiting(self) > 0 ? Qtrue : Qfalse;