set_nonblocking
if (set_nonblocking(writer_fd, "test_events") < 0) {
if (set_nonblocking(fd, testname) < 0)
if (set_nonblocking(reader_fd, __func__) < 0) {
if (set_nonblocking(reader_fd, __func__) < 0) {
if (set_nonblocking(writer_fd, __func__) < 0) {
if (set_nonblocking(fd[0]) == -1)
if (set_nonblocking(fd[1]) == -1)