2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/******************************************************************************
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*
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* Copyright © International Business Machines Corp., 2009
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*
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* DESCRIPTION
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* Block on a futex and wait for timeout.
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*
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* AUTHOR
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* Darren Hart <dvhart@linux.intel.com>
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*
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* HISTORY
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* 2009-Nov-6: Initial version by Darren Hart <dvhart@linux.intel.com>
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*
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*****************************************************************************/
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#include <errno.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "futextest.h"
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#include "logging.h"
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#define TEST_NAME "futex-wait-timeout"
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static long timeout_ns = 100000; /* 100us default timeout */
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void usage(char *prog)
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{
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printf("Usage: %s\n", prog);
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printf(" -c Use color\n");
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printf(" -h Display this help message\n");
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printf(" -t N Timeout in nanoseconds (default: 100,000)\n");
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printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
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VQUIET, VCRITICAL, VINFO);
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}
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int main(int argc, char *argv[])
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{
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futex_t f1 = FUTEX_INITIALIZER;
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struct timespec to;
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int res, ret = RET_PASS;
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int c;
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while ((c = getopt(argc, argv, "cht:v:")) != -1) {
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switch (c) {
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case 'c':
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log_color(1);
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break;
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case 'h':
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usage(basename(argv[0]));
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exit(0);
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case 't':
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timeout_ns = atoi(optarg);
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break;
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case 'v':
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log_verbosity(atoi(optarg));
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break;
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default:
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usage(basename(argv[0]));
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exit(1);
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}
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}
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ksft_print_header();
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ksft_set_plan(1);
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ksft_print_msg("%s: Block on a futex and wait for timeout\n",
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basename(argv[0]));
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ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns);
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/* initialize timeout */
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to.tv_sec = 0;
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to.tv_nsec = timeout_ns;
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info("Calling futex_wait on f1: %u @ %p\n", f1, &f1);
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res = futex_wait(&f1, f1, &to, FUTEX_PRIVATE_FLAG);
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if (!res || errno != ETIMEDOUT) {
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fail("futex_wait returned %d\n", ret < 0 ? errno : ret);
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ret = RET_FAIL;
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}
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print_result(TEST_NAME, ret);
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return ret;
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}
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