Function test_cirbuf_align_right

dpdk/app/test/test_cmdline_cirbuf.c:989–1177

test right alignment */

/* test right alignment */
static int
test_cirbuf_align_right(void)
{
#define END_OFFSET CMDLINE_TEST_BUFSIZE - 1
	struct cirbuf cb;
	char buf[CMDLINE_TEST_BUFSIZE];
	char tmp[CMDLINE_TEST_BUFSIZE];
	unsigned i;


	/*
	 * align right when start < end and start in left half
	 */

	/*
	 * initialize circular buffer
	 */
	memset(buf, 0, sizeof(buf));
	if (cirbuf_init(&cb, buf, 0, sizeof(buf)) < 0) {
		printf("Error: failed to initialize circular buffer!\n");
		return -1;
	}

	/* push end into left half */
	for (i = 0; i < HALF_OFFSET - 1; i++)
		cirbuf_add_tail_safe(&cb, 't');

	/* push start into left half < end */
	for (i = 0; i < SMALL_OFFSET; i++)
		cirbuf_del_head_safe(&cb);

	/* align */
	cirbuf_align_right(&cb);

	/* verify result */
	if (cb.start != END_OFFSET || cb.len != LEN1 || cb.end != cb.len - 2) {
		printf("Error: buffer alignment is wrong!\n");
		return -1;
	}

	/*
	 * align right when start > end and start in left half
	 */

	/*
	 * reinitialize circular buffer
	 */
	memset(buf, 0, sizeof(buf));
	if (cirbuf_init(&cb, buf, 0, sizeof(buf)) < 0) {
		printf("Error: failed to reinitialize circular buffer!\n");
		return -1;
	}

	/* push start into left half */
	for (i = 0; i < HALF_OFFSET + 2; i++)
		cirbuf_add_head_safe(&cb, 'h');

	/* push end into left half > start */