Function io_uring_wait_cqes_new

src/queue.c:288–312

* If we have kernel support for IORING_ENTER_EXT_ARG, then we can use that * more efficiently than queueing an internal timeout command. */

 * more efficiently than queueing an internal timeout command.
 */
static int io_uring_wait_cqes_new(struct io_uring *ring,
				  struct io_uring_cqe **cqe_ptr,
				  unsigned wait_nr,
				  struct __kernel_timespec *ts,
				  unsigned int min_wait_usec,
				  sigset_t *sigmask)
{
	struct io_uring_getevents_arg arg = {
		.sigmask	= (unsigned long) sigmask,
		.sigmask_sz	= _NSIG / 8,
		.ts		= (unsigned long) ts
	};
	struct get_data data = {
		.wait_nr	= wait_nr,
		.get_flags	= IORING_ENTER_EXT_ARG,
		.sz		= sizeof(arg),
		.has_ts		= ts != NULL,
		.arg		= &arg
	};

	if (min_wait_usec && ring->features & IORING_FEAT_MIN_TIMEOUT)
		arg.min_wait_usec = min_wait_usec;

	return _io_uring_get_cqe(ring, cqe_ptr, &data);
}

/*
 * Like io_uring_wait_cqe(), except it accepts a timeout value as well. Note