| /* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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" |
| #include "usctest.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() |
| { |
| tst_resm(TPASS, "Test passed\n"); |
| tst_exit(); |
| } |
| |
| int anyfail() |
| { |
| tst_resm(TFAIL, "Test failed\n"); |
| tst_exit(); |
| return 0; |
| } |
| |
| /***** ** ** *****/ |