rb_thread_call_without_gvl2  214 ext/readline/readline.c     rb_thread_call_without_gvl2(getc_func, &data, RUBY_UBF_IO, NULL);
rb_thread_call_without_gvl2   30 include/ruby/thread.h void *rb_thread_call_without_gvl2(void *(*func)(void *), void *data1,
rb_thread_call_without_gvl2  997 io.c               return (ssize_t)rb_thread_call_without_gvl2(internal_write_func2, &iis,
rb_thread_call_without_gvl2 1059 io.c               ret = (VALUE)rb_thread_call_without_gvl2(io_flush_buffer_sync2, fptr,
rb_thread_call_without_gvl2 2335 process.c                      rb_thread_call_without_gvl2(open_func, (void *)&open_data, RUBY_UBF_IO, 0);