1*ef777be9SPeter Holm#!/bin/sh 2*ef777be9SPeter Holm 3*ef777be9SPeter Holm# 4*ef777be9SPeter Holm# Copyright (c) 2025 Peter Holm <pho@FreeBSD.org> 5*ef777be9SPeter Holm# 6*ef777be9SPeter Holm# SPDX-License-Identifier: BSD-2-Clause 7*ef777be9SPeter Holm# 8*ef777be9SPeter Holm 9*ef777be9SPeter Holm# Seen: 10*ef777be9SPeter Holm# UID PID PPID C PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND 11*ef777be9SPeter Holm# 0 3730 3668 11 20 0 13596 2904 exithold DE+ 0 1:59.68 ./kcmp 12*ef777be9SPeter Holm 13*ef777be9SPeter Holm# Fixed by: 5b3e5c6ce3e5 14*ef777be9SPeter Holm 15*ef777be9SPeter Holm. ../default.cfg 16*ef777be9SPeter Holm 17*ef777be9SPeter Holmset -u 18*ef777be9SPeter Holmprog=$(basename "$0" .sh) 19*ef777be9SPeter Holmcat > /tmp/$prog.c <<EOF 20*ef777be9SPeter Holm#include <sys/types.h> 21*ef777be9SPeter Holm 22*ef777be9SPeter Holm#include <err.h> 23*ef777be9SPeter Holm#include <fcntl.h> 24*ef777be9SPeter Holm#include <pthread.h> 25*ef777be9SPeter Holm#include <signal.h> 26*ef777be9SPeter Holm#include <stdlib.h> 27*ef777be9SPeter Holm#include <time.h> 28*ef777be9SPeter Holm#include <unistd.h> 29*ef777be9SPeter Holm 30*ef777be9SPeter Holmstatic void * 31*ef777be9SPeter Holmt1(void *data __unused) 32*ef777be9SPeter Holm{ 33*ef777be9SPeter Holm for (;;) 34*ef777be9SPeter Holm pause(); 35*ef777be9SPeter Holm 36*ef777be9SPeter Holm return (NULL); 37*ef777be9SPeter Holm} 38*ef777be9SPeter Holm 39*ef777be9SPeter Holmint 40*ef777be9SPeter Holmmain(void) 41*ef777be9SPeter Holm{ 42*ef777be9SPeter Holm pid_t p1, p2; 43*ef777be9SPeter Holm pthread_t tid[2]; 44*ef777be9SPeter Holm time_t start; 45*ef777be9SPeter Holm uintptr_t idx1, idx2; 46*ef777be9SPeter Holm int r; 47*ef777be9SPeter Holm 48*ef777be9SPeter Holm if ((r = pthread_create(&tid[0], NULL, t1, NULL)) != 0) 49*ef777be9SPeter Holm errc(1, r, "pthread_create"); 50*ef777be9SPeter Holm if ((r = pthread_create(&tid[1], NULL, t1, NULL)) != 0) 51*ef777be9SPeter Holm errc(1, r, "pthread_create"); 52*ef777be9SPeter Holm 53*ef777be9SPeter Holm start = time(NULL); 54*ef777be9SPeter Holm while (time(NULL) - start < 60) { 55*ef777be9SPeter Holm idx1 = idx2 = 0; 56*ef777be9SPeter Holm p1 = arc4random() % 1000000; 57*ef777be9SPeter Holm p2 = arc4random() % 1000000; 58*ef777be9SPeter Holm kcmp(p1, p2, KCMP_VM, idx1, idx2); 59*ef777be9SPeter Holm } 60*ef777be9SPeter Holm} 61*ef777be9SPeter HolmEOF 62*ef777be9SPeter Holmmycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1 63*ef777be9SPeter Holm 64*ef777be9SPeter Holm/tmp/$prog 65*ef777be9SPeter Holm 66*ef777be9SPeter Holmrm /tmp/$prog.c /tmp/$prog 67*ef777be9SPeter Holmexit 0 68