Release 4.7 tools/testing/selftests/futex/functional/futex_wait_wouldblock.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
* Test if FUTEX_WAIT op returns -EWOULDBLOCK if the futex value differs
* from the expected one.
*
* AUTHOR
* Gowrishankar <gowrishankar.m@in.ibm.com>
*
* HISTORY
* 2009-Nov-14: Initial version by Gowrishankar <gowrishankar.m@in.ibm.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 timeout_ns 100000
void usage(char *prog)
{
printf("Usage: %s\n", prog);
printf(" -c Use color\n");
printf(" -h Display this help message\n");
printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
VQUIET, VCRITICAL, VINFO);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| darren hart | darren hart | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
int main(int argc, char *argv[])
{
struct timespec to = {.tv_sec = 0, .tv_nsec = timeout_ns};
futex_t f1 = FUTEX_INITIALIZER;
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 'v':
log_verbosity(atoi(optarg));
break;
default:
usage(basename(argv[0]));
exit(1);
}
}
printf("%s: Test the unexpected futex value in FUTEX_WAIT\n",
basename(argv[0]));
info("Calling futex_wait on f1: %u @ %p with val=%u\n", f1, &f1, f1+1);
res = futex_wait(&f1, f1+1, &to, FUTEX_PRIVATE_FLAG);
if (!res || errno != EWOULDBLOCK) {
fail("futex_wait returned: %d %s\n",
res ? errno : res, res ? strerror(errno) : "");
ret = RET_FAIL;
}
print_result(ret);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| darren hart | darren hart | 214 | 100.00% | 1 | 100.00% |
| Total | 214 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| darren hart | darren hart | 280 | 100.00% | 1 | 100.00% |
| Total | 280 | 100.00% | 1 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.