1 /*
2 * Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
3 *
4 * Based on futextest (futext_wait_timeout.c and futex_wait_ewouldblock.c)
5 * written by Darren Hart <dvhltc@us.ibm.com>
6 * Gowrishankar <gowrishankar.m@in.ibm.com>
7 *
8 * Licensed under the GNU GPLv2 or later.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23 /*
24 * 1. Block on a futex and wait for timeout.
25 * 2. Test if FUTEX_WAIT op returns -EWOULDBLOCK if the futex value differs
26 * from the expected one.
27 */
28
29 #include <errno.h>
30
31 #include "test.h"
32 #include "futextest.h"
33
34 const char *TCID="futex_wait01";
35
36 struct testcase {
37 futex_t *f_addr;
38 futex_t f_val;
39 int opflags;
40 int exp_errno;
41 };
42
43 static futex_t futex = FUTEX_INITIALIZER;
44 static struct timespec to = {.tv_sec = 0, .tv_nsec = 10000};
45
46 static struct testcase testcases[] = {
47 {&futex, FUTEX_INITIALIZER, 0, ETIMEDOUT},
48 {&futex, FUTEX_INITIALIZER+1, 0, EWOULDBLOCK},
49 {&futex, FUTEX_INITIALIZER, FUTEX_PRIVATE_FLAG, ETIMEDOUT},
50 {&futex, FUTEX_INITIALIZER+1, FUTEX_PRIVATE_FLAG, EWOULDBLOCK},
51 };
52
53 const int TST_TOTAL=ARRAY_SIZE(testcases);
54
verify_futex_wait(struct testcase * tc)55 static void verify_futex_wait(struct testcase *tc)
56 {
57 int res;
58
59 res = futex_wait(tc->f_addr, tc->f_val, &to, tc->opflags);
60
61 if (res != -1) {
62 tst_resm(TFAIL, "futex_wait() returned %i, expected -1", res);
63 return;
64 }
65
66 if (errno != tc->exp_errno) {
67 tst_resm(TFAIL | TERRNO, "expected errno=%s",
68 tst_strerrno(tc->exp_errno));
69 return;
70 }
71
72 tst_resm(TPASS | TERRNO, "futex_wait()");
73 }
74
main(int argc,char * argv[])75 int main(int argc, char *argv[])
76 {
77 int lc, i;
78
79 tst_parse_opts(argc, argv, NULL, NULL);
80
81 for (lc = 0; TEST_LOOPING(lc); lc++) {
82 for (i = 0; i < TST_TOTAL; i++)
83 verify_futex_wait(testcases + i);
84 }
85
86 tst_exit();
87 }
88