90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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_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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