Function main

test/send-zerocopy.c:861–990

}

int main(int argc, char *argv[])
{
	size_t len;
	int ret, i;

	if (argc > 1)
		return T_EXIT_SKIP;

	ret = probe_zc_support();
	if (ret) {
		printf("probe failed\n");
		return T_EXIT_FAIL;
	}
	if (!has_sendzc) {
		printf("no IORING_OP_SEND_ZC support, skip\n");
		return T_EXIT_SKIP;
	}

	page_sz = sysconf(_SC_PAGESIZE);

	if (try_hugepages) {
		len = LARGE_BUF_SIZE;
		tx_buffer = t_aligned_alloc(page_sz, len);
		rx_buffer = t_aligned_alloc(page_sz, len);

		if (tx_buffer && rx_buffer) {
			buffers_iov[BUF_T_LARGE].iov_base = tx_buffer;
			buffers_iov[BUF_T_LARGE].iov_len = len;
		} else {
			printf("skip large buffer tests, can't alloc\n");
			free_buffers();
		}
	}

	if (!tx_buffer) {
		len = 2 * page_sz;
		tx_buffer = t_aligned_alloc(page_sz, len);
		rx_buffer = t_aligned_alloc(page_sz, len);

		if (!tx_buffer || !rx_buffer) {
			fprintf(stderr, "can't allocate buffers\n");
			return T_EXIT_FAIL;
		}
	}

	srand((unsigned)time(NULL));
	for (i = 0; i < len; i++)
		tx_buffer[i] = i;
	memset(rx_buffer, 0, len);

	buffers_iov[BUF_T_NORMAL].iov_base = tx_buffer + page_sz;
	buffers_iov[BUF_T_NORMAL].iov_len = page_sz;
	buffers_iov[BUF_T_SMALL].iov_base = tx_buffer;
	buffers_iov[BUF_T_SMALL].iov_len = 137;
	buffers_iov[BUF_T_NONALIGNED].iov_base = tx_buffer + BUFFER_OFFSET;
	buffers_iov[BUF_T_NONALIGNED].iov_len = 2 * page_sz - BUFFER_OFFSET - 13;

	if (len == LARGE_BUF_SIZE) {