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#!/bin/sh
#
# Copyright (c) 2025 Peter Holm <pho@FreeBSD.org>
#
# SPDX-License-Identifier: BSD-2-Clause
#
. ../default.cfg
set -u
prog=$(basename "$0" .sh)
dir=/tmp
odir=`pwd`
cd $dir
sed '1,/^EOF/d' < $odir/$0 > $dir/$prog.c
mycc -o $prog -Wall -Wextra -O2 -g $prog.c || exit 1
rm -f $prog.c
cd $odir
mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
set -e
mdconfig -a -t swap -s 6g -u $mdstart
newfs $newfs_flags -n /dev/md$mdstart > /dev/null
mount /dev/md$mdstart $mntpoint
set +e
wd="$mntpoint/$prog.dir"
mkdir -p $wd
dd if=/dev/zero of=$wd/file bs=1m count=5k status=none
[ `jot -r 1 1 100` -le 25 ] &&
../testcases/swap/swap -t 10m -i 20 > /dev/null 2>&1 &
cd $wd
touch $wd/out
/tmp/$prog $wd/file $wd/out; s=$?
cd $odir
while pkill swap; do :; done
wait
umount $mntpoint
mdconfig -d -u $mdstart
rm -rf /tmp/$prog $wd
exit $s
EOF
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <machine/atomic.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#define DONE 1
#define MAXBLK (100 * 1024 * 1024)
#define MAXPROC 32
#define MAXSIZ (5LL * 1024 * 1024 *1024)
#define RUNTIME (5 * 60)
#define SYNC 0
static volatile u_int *share;
static int parallel;
static char *file, *file2;
static off_t
newpos(int lng)
{
off_t p;
do {
arc4random_buf(&p, sizeof(p));
p = p & 0xfffffff;
} while (p + lng > MAXSIZ);
return (p);
}
static void
test(int indx, int num)
{
off_t pos, pos2;
ssize_t i, l;
time_t start;
int fd, fd2, n;
atomic_add_int(&share[SYNC], 1);
while (share[SYNC] != (unsigned int)parallel)
sched_yield();
n = 0;
start = time(NULL);
while (share[DONE] != (unsigned int)parallel) {
setproctitle("test(%d) num %d, n %d", indx, num, n);
if ((fd = open(file, O_RDWR)) == -1)
err(1, "open(%s)", file);
if ((fd2 = open(file2, O_RDWR)) == -1)
err(1, "open(%s)", file2);
for (i = 0; i < arc4random() % 512; i++) {
l = arc4random() % MAXBLK + 1;
pos = newpos(l);
pos2 = newpos(l);
if (copy_file_range(fd, &pos, fd2, &pos2, l, 0) == -1)
err(1, "copy_file_range()");
}
close(fd2);
close(fd);
if (n++ == 0)
atomic_add_int(&share[DONE], 1);
if (time(NULL) - start >= RUNTIME * 4) {
fprintf(stderr, "test(%d), %d Timed out\n", indx, num);
break;
}
}
if (n++ == 0)
atomic_add_int(&share[DONE], 1);
_exit(0);
}
void
setup(void)
{
parallel = arc4random() % MAXPROC + 1;
}
int
main(int argc, char *argv[])
{
size_t len;
time_t start;
int e, i, n, *pids, status;
if (argc != 3) {
fprintf(stderr, "Usage: %s <in file> <out file>\n", argv[0]);
_exit(1);
}
e = 0;
file = argv[1];
file2 = argv[2];
len = PAGE_SIZE;
if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
err(1, "mmap");
n = 0;
start = time(NULL);
while ((time(NULL) - start) < RUNTIME && e == 0) {
setup();
pids = malloc(sizeof(pid_t) * parallel);
share[SYNC] = share[DONE] = 0;
for (i = 0; i < parallel; i++) {
if ((pids[i] = fork()) == 0)
test(i, n);
}
for (i = 0; i < parallel; i++) {
if (waitpid(pids[i], &status, 0) != pids[i])
err(1, "waitpid %d", pids[i]);
e += status == 0 ? 0 : 1;
}
n++;
n = n % 10;
free(pids);
}
return (e);
}
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