blob: d8be741a3579836ee05d60fa4650c9653670cd67 [file] [log] [blame]
/******************************************************************************
*
* Copyright FUJITSU LIMITED 2010
* Copyright KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* NAME
* futex_wait_private_mapped_file.c
*
* DESCRIPTION
* Internally, Futex has two handling mode, anon and file. The private file
* mapping is special. At first it behave as file, but after write anything
* it behave as anon. This test is intent to test such case.
*
* AUTHOR
* KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
*
* HISTORY
* 2010-Jan-6: Initial version by KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
*
*****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <syscall.h>
#include <unistd.h>
#include <errno.h>
#include <linux/futex.h>
#include <pthread.h>
#include <libgen.h>
#include <signal.h>
#include "logging.h"
#include "futextest.h"
#define PAGE_SZ 4096
char pad[PAGE_SZ] = {1};
futex_t val = 1;
char pad2[PAGE_SZ] = {1};
#define WAKE_WAIT_US 3000000
struct timespec wait_timeout = { .tv_sec=5, .tv_nsec=0};
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);
}
void* thr_futex_wait(void *arg)
{
int ret;
info("futex wait\n");
ret = futex_wait(&val, 1, &wait_timeout, 0);
if (ret && errno != EWOULDBLOCK && errno != ETIMEDOUT) {
error("futex error.\n", errno);
print_result(RET_ERROR);
exit(RET_ERROR);
}
if (ret && errno == ETIMEDOUT) {
fail("waiter timedout\n");
}
info("futex_wait: ret = %d, errno = %d\n", ret, errno);
return NULL;
}
int main(int argc, char **argv)
{
pthread_t thr;
int ret = RET_PASS;
int res;
int c;
while ((c = getopt(argc, argv, "chv:")) != -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 futex value of private file mappings in FUTEX_WAIT\n",
basename(argv[0]));
ret = pthread_create(&thr, NULL, thr_futex_wait, NULL);
if (ret < 0) {
fprintf(stderr, "pthread_create error\n");
ret = RET_ERROR;
goto out;
}
info("wait a while\n");
usleep(WAKE_WAIT_US);
val = 2;
res = futex_wake(&val, 1, 0);
info("futex_wake %d\n", res);
if (res != 1) {
fail("FUTEX_WAKE didn't find the waiting thread.\n");
ret = RET_FAIL;
}
info("join\n");
pthread_join(thr, NULL);
out:
print_result(ret);
return ret;
}