1 /*
2 * Copyright 2011-2015 Samy Al Bahra.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <stdio.h>
28 #include <stdlib.h>
29
30 #include <ck_backoff.h>
31 #include "../../common.h"
32
33 int
main(void)34 main(void)
35 {
36 ck_backoff_t backoff = CK_BACKOFF_INITIALIZER;
37 const ck_backoff_t ceiling = CK_BACKOFF_CEILING + 1;
38 unsigned int i = 0;
39
40 fprintf(stderr, "Ceiling is: %u (%#x)\n", CK_BACKOFF_CEILING, CK_BACKOFF_CEILING);
41
42 for (;;) {
43 ck_backoff_t previous = backoff;
44 ck_backoff_eb(&backoff);
45
46 printf("EB %u\n", backoff);
47 if (previous == ceiling) {
48 if (backoff != ceiling)
49 ck_error("[C] GB: expected %u, got %u\n", ceiling, backoff);
50
51 if (i++ >= 1)
52 break;
53 } else if (previous != backoff >> 1) {
54 ck_error("[N] GB: expected %u (%u), got %u\n", previous << 1, previous, backoff);
55 }
56 }
57
58 return 0;
59 }
60
61