rb_nativethread_id_t   47 include/ruby/thread_native.h rb_nativethread_id_t rb_nativethread_self();
rb_nativethread_id_t  202 thread.c       fill_thread_id_string(rb_nativethread_id_t thid, rb_thread_id_string_t buf)
rb_nativethread_id_t  645 thread_pthread.c     rb_nativethread_id_t id;
rb_nativethread_id_t  829 thread_pthread.c     rb_nativethread_id_t curr = pthread_self();
rb_nativethread_id_t 1754 thread_pthread.c rb_nativethread_id_t
rb_nativethread_id_t  784 thread_win32.c rb_nativethread_id_t
rb_nativethread_id_t  710 vm_core.h          rb_nativethread_id_t thread_id;