5113f6f70
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kernel add
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/******************************************************************************
*
* 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"
static long timeout_ns = 100000; /* 100us default timeout */
void usage(char *prog)
{
printf("Usage: %s
", prog);
printf(" -c Use color
");
printf(" -h Display this help message
");
printf(" -t N Timeout in nanoseconds (default: 100,000)
");
printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO
",
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);
}
}
printf("%s: Block on a futex and wait for timeout
",
basename(argv[0]));
printf("\tArguments: timeout=%ldns
", timeout_ns);
/* initialize timeout */
to.tv_sec = 0;
to.tv_nsec = timeout_ns;
info("Calling futex_wait on f1: %u @ %p
", f1, &f1);
res = futex_wait(&f1, f1, &to, FUTEX_PRIVATE_FLAG);
if (!res || errno != ETIMEDOUT) {
fail("futex_wait returned %d
", ret < 0 ? errno : ret);
ret = RET_FAIL;
}
print_result(ret);
return ret;
}
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