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#!/bin/sh
#
# Copyright (c) 2025 Peter Holm <pho@FreeBSD.org>
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Seen:
# UID PID PPID C PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND
# 0 3730 3668 11 20 0 13596 2904 exithold DE+ 0 1:59.68 ./kcmp
# Fixed by: 5b3e5c6ce3e5
. ../default.cfg
set -u
prog=$(basename "$0" .sh)
cat > /tmp/$prog.c <<EOF
#include <sys/types.h>
#include <err.h>
#include <fcntl.h>
#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
static void *
t1(void *data __unused)
{
for (;;)
pause();
return (NULL);
}
int
main(void)
{
pid_t p1, p2;
pthread_t tid[2];
time_t start;
uintptr_t idx1, idx2;
int r;
if ((r = pthread_create(&tid[0], NULL, t1, NULL)) != 0)
errc(1, r, "pthread_create");
if ((r = pthread_create(&tid[1], NULL, t1, NULL)) != 0)
errc(1, r, "pthread_create");
start = time(NULL);
while (time(NULL) - start < 60) {
idx1 = idx2 = 0;
p1 = arc4random() % 1000000;
p2 = arc4random() % 1000000;
kcmp(p1, p2, KCMP_VM, idx1, idx2);
}
}
EOF
mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1
/tmp/$prog
rm /tmp/$prog.c /tmp/$prog
exit 0
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