175 lines
3.8 KiB
Bash
Executable File
175 lines
3.8 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2017 Dell EMC Isilon
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Test scenario for 2MB page promotions.
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# No problems seen.
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. ../default.cfg
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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[ "`uname -p`" = "amd64" ] || exit 0
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dir=/tmp
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odir=`pwd`
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cd $dir
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sed '1,/^EOF/d' < $odir/$0 > $dir/mmap31.c
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mycc -o mmap31 -Wall -Wextra -O0 -g mmap31.c || exit 1
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rm -f mmap31.c
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cd $odir
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(cd ../testcases/swap; ./swap -t 10m -i 20) > /dev/null &
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/tmp/mmap31
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s=$?
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kill $! 2>/dev/null
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while pkill -9 swap; do :; done
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wait
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rm -rf /tmp/mmap31
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exit $s
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EOF
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#include <sys/param.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <machine/atomic.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <time.h>
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#include <unistd.h>
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#define SEGS 512
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static size_t l[SEGS];
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static char *c[SEGS];
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static volatile char r;
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static volatile u_int *share;
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#define PARALLEL 8
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#define RUNTIME (2 * 60)
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#define SYNC 0
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static void
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handler(int s __unused)
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{
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_exit(0);
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}
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static void
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touch(void)
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{
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time_t t;
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int idx;
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char *c1;
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t = time(NULL);
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while (time(NULL) - t < 5) {
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idx = arc4random() % SEGS;
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c1 = c[idx];
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idx = arc4random() % l[idx];
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r += c1[idx];
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c1[idx] += 1;
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}
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}
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static void
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test(void)
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{
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pid_t pid;
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int i, mode, status;
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r = 0;
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for (i = 0; i < SEGS; i++) {
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l[i] = (arc4random() % 512 + 1) * PAGE_SIZE;
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mode = PROT_READ | PROT_WRITE;
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if ((c[i] = (char *)mmap(NULL, l[i], mode,
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MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
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err(1, "mmap");
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}
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if ((pid = fork()) == 0) {
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signal(SIGHUP, handler);
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atomic_add_int(&share[SYNC], 1);
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while (share[SYNC] != PARALLEL)
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;
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touch();
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pause();
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_exit(0);
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}
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while (share[SYNC] != PARALLEL)
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;
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touch();
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kill(pid, SIGHUP);
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if (waitpid(pid, &status, 0) != pid)
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err(1, "waitpid");
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if (status != 0)
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errx(1, "child status = %d", status);
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_exit(status);
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}
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int
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main(void)
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{
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pid_t pids[PARALLEL];
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size_t len;
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time_t start;
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int e, i, status;
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e = 0;
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len = PAGE_SIZE;
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if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
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MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
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err(1, "mmap");
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start = time(NULL);
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while ((time(NULL) - start) < RUNTIME && e == 0) {
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share[SYNC] = 0;
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for (i = 0; i < PARALLEL; i++) {
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if ((pids[i] = fork()) == 0)
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test();
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if (pids[i] == -1)
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err(1, "fork()");
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}
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for (i = 0; i < PARALLEL; i++) {
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if (waitpid(pids[i], &status, 0) == -1)
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err(1, "waitpid(%d)", pids[i]);
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e += status == 0 ? 0 : 1;
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}
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}
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return (e);
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}
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