/* IBM Corporation */
/* 01/02/2003 Port to LTP avenkat@us.ibm.com */
/* 06/30/2001 Port to Linux nsharoff@us.ibm.com */
/*
* Copyright (c) International Business Machines Corp., 2003
*
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* mfile_swap:
* Mmap a large (> ANON_GRAN_PAGES_MAX) shared, anonymous region before
* swapping to use the second half of the kernel primitive mfile_swap.
* However, this test does _NOT_ cause swapping to occur. Instead it should be
* run with waves or at the same time as a test which does cause swapping (i.e.
* vsswapin or vfork_swap)
*/
#define _KMEMUSER
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
/***** LTP Port *****/
#include "test.h"
#define FAILED 0
#define PASSED 1
int local_flag = PASSED;
char *TCID = "mmapstress06"; //mfile_swap
FILE *temp;
int TST_TOTAL = 1;
int anyfail();
void ok_exit();
/***** ** ** *****/
#define ANON_GRAN_PAGES_MAX (32U)
extern time_t time(time_t *);
extern char *ctime(const time_t *);
extern int atoi(const char *);
#define NMFPTEPG (1024)
#define ERROR(M) (void)fprintf(stderr, "%s: errno = %d; " M "\n", \
argv[0], errno);
int main(int argc, char *argv[])
{
caddr_t mmapaddr;
size_t pagesize = sysconf(_SC_PAGE_SIZE);
time_t t;
int sleep_time = 0;
if (!argc) {
(void)fprintf(stderr, "argc == 0\n");
anyfail();
}
if (argc != 2 || !(sleep_time = atoi(argv[1]))) {
(void)fprintf(stderr, "usage: %s sleep_time\n", argv[0]);
anyfail();
}
(void)time(&t);
// (void)printf("%s: Started %s", argv[0], ctime(&t)); LTP Port
if (sbrk(pagesize - ((ulong) sbrk(0) & (pagesize - 1))) == (char *)-1) {
ERROR("couldn't round up brk");
anyfail();
}
if ((mmapaddr = sbrk(0)) == (char *)-1) {
ERROR("couldn't find top of brk");
anyfail();
}
/* mmapaddr is now on a page boundary after the brk segment */
if (mmap
(mmapaddr, (ANON_GRAN_PAGES_MAX * NMFPTEPG + 1) * pagesize,
PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, 0,
0) == (caddr_t) - 1) {
ERROR("large mmap failed");
printf("for this test to run, it needs a mmap space of\n");
printf("%d pages\n", (ANON_GRAN_PAGES_MAX * NMFPTEPG + 1));
return 1;
}
(void)sleep(sleep_time);
(void)time(&t);
// (void)printf("%s: Finished %s", argv[0], ctime(&t)); LTP Port
ok_exit();
tst_exit();
}
/***** LTP Port *****/
void ok_exit(void)
{
tst_resm(TPASS, "Test passed\n");
tst_exit();
}
int anyfail(void)
{
tst_brkm(TFAIL, NULL, "Test failed\n");
}
/***** ** ** *****/