1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /******************************************************************************
4 * Copyright © International Business Machines Corp., 2009
7 * Block on a futex and wait for timeout.
10 * Darren Hart <dvhart@linux.intel.com>
13 * 2009-Nov-6: Initial version by Darren Hart <dvhart@linux.intel.com>
15 *****************************************************************************/
23 #include "futextest.h"
26 #define TEST_NAME "futex-wait-timeout"
28 static long timeout_ns = 100000; /* 100us default timeout */
30 void usage(char *prog)
32 printf("Usage: %s\n", prog);
33 printf(" -c Use color\n");
34 printf(" -h Display this help message\n");
35 printf(" -t N Timeout in nanoseconds (default: 100,000)\n");
36 printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
37 VQUIET, VCRITICAL, VINFO);
40 int main(int argc, char *argv[])
42 futex_t f1 = FUTEX_INITIALIZER;
44 int res, ret = RET_PASS;
47 while ((c = getopt(argc, argv, "cht:v:")) != -1) {
53 usage(basename(argv[0]));
56 timeout_ns = atoi(optarg);
59 log_verbosity(atoi(optarg));
62 usage(basename(argv[0]));
69 ksft_print_msg("%s: Block on a futex and wait for timeout\n",
71 ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns);
73 /* initialize timeout */
75 to.tv_nsec = timeout_ns;
77 info("Calling futex_wait on f1: %u @ %p\n", f1, &f1);
78 res = futex_wait(&f1, f1, &to, FUTEX_PRIVATE_FLAG);
79 if (!res || errno != ETIMEDOUT) {
80 fail("futex_wait returned %d\n", ret < 0 ? errno : ret);
84 print_result(TEST_NAME, ret);