rb_thread_dead     68 thread.c       static int rb_thread_dead(rb_thread_t *th);
rb_thread_dead   1266 thread.c           if (rb_thread_dead(th)) {
rb_thread_dead   1783 thread.c           if (rb_thread_dead(th)) {
rb_thread_dead   1812 thread.c           if (rb_thread_dead(th))
rb_thread_dead   1835 thread.c           if (rb_thread_dead(th))