[mirror_ubuntu-hirsute-kernel.git] / tools / testing / selftests / futex / functional / futex_wait_timeout.c

/******************************************************************************
 *
 *   Copyright © International Business Machines  Corp., 2009
 *
 *   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.
 *
 * DESCRIPTION
 *      Block on a futex and wait for timeout.
 *
 * AUTHOR
 *      Darren Hart <dvhart@linux.intel.com>
 *
 * HISTORY
 *      2009-Nov-6: Initial version by Darren Hart <dvhart@linux.intel.com>
 *
 *****************************************************************************/

#include <errno.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "futextest.h"
#include "logging.h"

#define TEST_NAME "futex-wait-timeout"

static long timeout_ns = 100000;	/* 100us default timeout */

void usage(char *prog)
{
	printf("Usage: %s\n", prog);
	printf("  -c	Use color\n");
	printf("  -h	Display this help message\n");
	printf("  -t N	Timeout in nanoseconds (default: 100,000)\n");
	printf("  -v L	Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
	       VQUIET, VCRITICAL, VINFO);
}

int main(int argc, char *argv[])
{
	futex_t f1 = FUTEX_INITIALIZER;
	struct timespec to;
	int res, ret = RET_PASS;
	int c;

	while ((c = getopt(argc, argv, "cht:v:")) != -1) {
		switch (c) {
		case 'c':
			log_color(1);
			break;
		case 'h':
			usage(basename(argv[0]));
			exit(0);
		case 't':
			timeout_ns = atoi(optarg);
			break;
		case 'v':
			log_verbosity(atoi(optarg));
			break;
		default:
			usage(basename(argv[0]));
			exit(1);
		}
	}

	ksft_print_header();
	ksft_set_plan(1);
	ksft_print_msg("%s: Block on a futex and wait for timeout\n",
	       basename(argv[0]));
	ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns);

	/* initialize timeout */
	to.tv_sec = 0;
	to.tv_nsec = timeout_ns;

	info("Calling futex_wait on f1: %u @ %p\n", f1, &f1);
	res = futex_wait(&f1, f1, &to, FUTEX_PRIVATE_FLAG);
	if (!res || errno != ETIMEDOUT) {
		fail("futex_wait returned %d\n", ret < 0 ? errno : ret);
		ret = RET_FAIL;
	}

	print_result(TEST_NAME, ret);
	return ret;
}
Commit	Line	Data
2aa8470f DH	1	/******************************************************************************
	2	*
	3	* Copyright © International Business Machines Corp., 2009
	4	*
	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	* DESCRIPTION
	11	* Block on a futex and wait for timeout.
	12	*
	13	* AUTHOR
	14	* Darren Hart <dvhart@linux.intel.com>
	15	*
	16	* HISTORY
	17	* 2009-Nov-6: Initial version by Darren Hart <dvhart@linux.intel.com>
	18	*
	19	*****************************************************************************/
	20
	21	#include <errno.h>
	22	#include <getopt.h>
	23	#include <stdio.h>
	24	#include <stdlib.h>
	25	#include <string.h>
	26	#include <time.h>
	27	#include "futextest.h"
	28	#include "logging.h"
	29
1f666e52 NK	30	#define TEST_NAME "futex-wait-timeout"
1f666e52 NK	31
2aa8470f DH	32	static long timeout_ns = 100000; /* 100us default timeout */
	33
	34	void usage(char *prog)
	35	{
	36	printf("Usage: %s\n", prog);
	37	printf(" -c Use color\n");
	38	printf(" -h Display this help message\n");
	39	printf(" -t N Timeout in nanoseconds (default: 100,000)\n");
	40	printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
	41	VQUIET, VCRITICAL, VINFO);
	42	}
	43
	44	int main(int argc, char *argv[])
	45	{
	46	futex_t f1 = FUTEX_INITIALIZER;
	47	struct timespec to;
	48	int res, ret = RET_PASS;
	49	int c;
	50
	51	while ((c = getopt(argc, argv, "cht:v:")) != -1) {
	52	switch (c) {
	53	case 'c':
	54	log_color(1);
	55	break;
	56	case 'h':
	57	usage(basename(argv[0]));
	58	exit(0);
	59	case 't':
	60	timeout_ns = atoi(optarg);
	61	break;
	62	case 'v':
	63	log_verbosity(atoi(optarg));
	64	break;
	65	default:
	66	usage(basename(argv[0]));
	67	exit(1);
	68	}
	69	}
	70
b274e75c	71	ksft_print_header();
5821ba96	72	ksft_set_plan(1);
b274e75c	73	ksft_print_msg("%s: Block on a futex and wait for timeout\n",
2aa8470f	74	basename(argv[0]));
b274e75c	75	ksft_print_msg("\tArguments: timeout=%ldns\n", timeout_ns);
2aa8470f DH	76
	77	/* initialize timeout */
	78	to.tv_sec = 0;
	79	to.tv_nsec = timeout_ns;
	80
	81	info("Calling futex_wait on f1: %u @ %p\n", f1, &f1);
	82	res = futex_wait(&f1, f1, &to, FUTEX_PRIVATE_FLAG);
	83	if (!res \|\| errno != ETIMEDOUT) {
	84	fail("futex_wait returned %d\n", ret < 0 ? errno : ret);
	85	ret = RET_FAIL;
	86	}
	87
1f666e52	88	print_result(TEST_NAME, ret);
2aa8470f DH	89	return ret;
2aa8470f DH	90	}