1 /*
2 * Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
3 *
4 * Licensed under the GNU GPLv2 or later.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19 /*
20 * futex_wake() returns 0 (0 woken up processes) when no processes wait on the mutex.
21 */
22
23 #include <errno.h>
24
25 #include "test.h"
26 #include "futextest.h"
27
28 const char *TCID="futex_wake01";
29
30 struct testcase {
31 futex_t *f_addr;
32 int nr_wake;
33 int opflags;
34 };
35
36 static futex_t futex = FUTEX_INITIALIZER;
37
38 static struct testcase testcases[] = {
39 /* nr_wake = 0 is noop */
40 {&futex, 0, 0},
41 {&futex, 0, FUTEX_PRIVATE_FLAG},
42 {&futex, 1, 0},
43 {&futex, 1, FUTEX_PRIVATE_FLAG},
44 {&futex, INT_MAX, 0},
45 {&futex, INT_MAX, FUTEX_PRIVATE_FLAG},
46 };
47
48 const int TST_TOTAL=ARRAY_SIZE(testcases);
49
verify_futex_wake(struct testcase * tc)50 static void verify_futex_wake(struct testcase *tc)
51 {
52 int res;
53
54 res = futex_wake(tc->f_addr, tc->nr_wake, tc->opflags);
55
56 if (res != 0) {
57 tst_resm(TFAIL, "futex_wake() returned %i, expected 0", res);
58 return;
59 }
60
61 tst_resm(TPASS, "futex_wake() returned 0");
62 }
63
main(int argc,char * argv[])64 int main(int argc, char *argv[])
65 {
66 int lc, i;
67
68 tst_parse_opts(argc, argv, NULL, NULL);
69
70 for (lc = 0; TEST_LOOPING(lc); lc++) {
71 for (i = 0; i < TST_TOTAL; i++)
72 verify_futex_wake(testcases + i);
73 }
74
75 tst_exit();
76 }
77