rb_thread_shield_new 1413 internal.h     VALUE rb_thread_shield_new(void);
rb_thread_shield_new  730 load.c         	data = (st_data_t)rb_thread_shield_new();
rb_thread_shield_new  737 load.c         	data = (st_data_t)rb_thread_shield_new();
rb_thread_shield_new  749 load.c         	st_insert(loading_tbl, data, (st_data_t)rb_thread_shield_new());