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memcg_test_2.c    53 lines (45 with data), 2.3 kB

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/******************************************************************************/
/* */
/* Copyright (c) 2009 FUJITSU LIMITED */
/* */
/* 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 */
/* */
/* Author: Li Zefan <lizf@cn.fujitsu.com> */
/* */
/******************************************************************************/
#include <sys/mman.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
void sigusr_handler(int __attribute__((unused)) signo)
{
char *p;
int size = getpagesize() * 2;
p = mmap(NULL, size, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_LOCKED, 0, 0);
if (p == MAP_FAILED)
exit(1);
}
int main(void)
{
struct sigaction sigusr_action;
memset(&sigusr_action, 0, sizeof(sigusr_action));
sigusr_action.sa_handler = &sigusr_handler;
sigaction(SIGUSR1, &sigusr_action, NULL);
while (1)
sleep(1);
return 0;
}