Home | History | Annotate | Download | only in regression
      1 /******************************************************************************/
      2 /*                                                                            */
      3 /* Copyright (c) 2009 FUJITSU LIMITED                                         */
      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 /* This program is distributed in the hope that it will be useful,            */
     11 /* but WITHOUT ANY WARRANTY;  without even the implied warranty of            */
     12 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See                  */
     13 /* the GNU General Public License for more details.                           */
     14 /*                                                                            */
     15 /* You should have received a copy of the GNU General Public License          */
     16 /* along with this program;  if not, write to the Free Software               */
     17 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA    */
     18 /*                                                                            */
     19 /* Author: Li Zefan <lizf (at) cn.fujitsu.com>                                     */
     20 /*                                                                            */
     21 /******************************************************************************/
     22 
     23 #include <sys/mman.h>
     24 #include <signal.h>
     25 #include <stdlib.h>
     26 #include <string.h>
     27 #include <unistd.h>
     28 
     29 void sigusr_handler(int __attribute__ ((unused)) signo)
     30 {
     31 	char *p;
     32 	int size = getpagesize() * 2;
     33 
     34 	p = mmap(NULL, size, PROT_READ | PROT_WRITE,
     35 		 MAP_PRIVATE | MAP_ANONYMOUS | MAP_LOCKED, 0, 0);
     36 	if (p == MAP_FAILED)
     37 		exit(1);
     38 }
     39 
     40 int main(void)
     41 {
     42 	struct sigaction sigusr_action;
     43 
     44 	memset(&sigusr_action, 0, sizeof(sigusr_action));
     45 	sigusr_action.sa_handler = &sigusr_handler;
     46 	sigaction(SIGUSR1, &sigusr_action, NULL);
     47 
     48 	while (1)
     49 		sleep(1);
     50 
     51 	return 0;
     52 }
     53