rb_io_synchronized  248 ext/socket/socket.c     rb_io_synchronized(fp);
rb_io_synchronized  150 include/ruby/io.h void rb_io_synchronized(rb_io_t*);
rb_io_synchronized 4374 io.c               rb_io_synchronized(fptr);
rb_io_synchronized 4554 io.c           	    rb_io_synchronized(RFILE(orig_stdout)->fptr);
rb_io_synchronized 4555 io.c           	    rb_io_synchronized(RFILE(orig_stderr)->fptr);
rb_io_synchronized 7090 io.c               rb_io_synchronized(fptr2);