1#!/bin/sh 2 3# 4# Copyright (c) 2013 EMC Corp. 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# Test scenario inspired by alc@ 30# Threaded version in order to "use the same pmap", as pointed out by kib@ 31 32# https://people.freebsd.org/~pho/stress/log/kostik601.txt 33# Fixed by r255396 34 35. ../default.cfg 36 37dir=/tmp 38odir=`pwd` 39cd $dir 40sed '1,/^EOF/d' < $odir/$0 > $dir/wire_no_page.c 41mycc -o mmap7 -Wall -Wextra -O0 wire_no_page.c -lpthread || exit 1 42rm -f wire_no_page.c 43cd $odir 44 45(cd ../testcases/swap; ./swap -t 1m -i 2) & 46sleep 1 47cp /tmp/mmap7 /tmp/mmap7.inputfile 48/tmp/mmap7 /tmp/mmap7.inputfile 49while pkill -9 swap; do :; done 50wait 51rm -f /tmp/mmap7 /tmp/mmap7.inputfile 52exit 53 54EOF 55#include <err.h> 56#include <errno.h> 57#include <pthread.h> 58#include <stdio.h> 59#include <stdlib.h> 60#include <sys/fcntl.h> 61#include <sys/mman.h> 62#include <sys/param.h> 63#include <sys/stat.h> 64#include <sys/types.h> 65#include <sys/wait.h> 66#include <unistd.h> 67 68char *p1, *p2, *p3; 69char c; 70const char *file; 71int fd; 72size_t len; 73struct stat st; 74 75void * 76test2(void *arg __unused) 77{ 78 int error, i __unused; 79 80 p1[arc4random() % len] = 1; 81 p2[arc4random() % len] = 1; 82 83 if (arc4random() % 100 < 30) 84 i = p3[arc4random() % len]; 85 86 if (arc4random() % 100 < 50) 87 if ((error = mlock(p1, len)) == -1) 88 err(1, "mlock"); 89 if (arc4random() % 100 < 50) 90 if ((error = msync(p1, len, MS_SYNC | MS_INVALIDATE)) == -1) 91 if (errno != EBUSY) 92 err(1, "msync"); 93 return (0); 94} 95 96void 97test(void) 98{ 99 pthread_t cp[3]; 100 int e, error, i; 101 102 if ((fd = open(file, O_RDWR)) == -1) 103 err(1, "open %s", file); 104 if ((error = fstat(fd, &st)) == -1) 105 err(1, "stat(%s)", file); 106 len = round_page(st.st_size); 107 if ((p1 = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) 108 err(1, "mmap"); 109 if ((p2 = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) 110 err(1, "mmap"); 111 if ((p3 = mmap(NULL, len, PROT_READ , MAP_SHARED, fd, 0)) == MAP_FAILED) 112 err(1, "mmap"); 113 114 for (i = 0; i < 3; i++) 115 if ((e = pthread_create(&cp[i], NULL, test2, NULL)) != 0) 116 errc(1, e, "pthread_create"); 117 for (i = 0; i < 3; i++) 118 pthread_join(cp[i], NULL); 119 120 if (munmap(p3, len) == -1) 121 err(1, "unmap()"); 122 if (munmap(p2, len) == -1) 123 err(1, "unmap()"); 124 if (munmap(p1, len) == -1) 125 err(1, "unmap()"); 126 close(fd); 127 128 _exit(0); 129} 130 131int 132main(int argc, char *argv[]) 133{ 134 int i; 135 136 if (argc != 2) 137 errx(1, "Usage: %s <file>", argv[0]); 138 file = argv[1]; 139 140 for (i = 0; i < 30000; i++) { 141 if (fork() == 0) 142 test(); 143 wait(NULL); 144 } 145 146 return (0); 147} 148