class.cpp

URL: https://mirkwood.cs.edinboro.edu/~bennett/class/cmsc4000/spring2026/notes/ch3/code/class.cpp

 
#include <iostream>
#include <unistd.h>
#include <sys/wait.h>

using namespace std;

void Report();

int main() {

//    Report();

// discussion of fork forkboomb, 
// a little deadlock/race condition
/*
    int i = 0;
    while (i < 6) {
        pid_t newid { fork()};
        // newid = fork();
        //     call fork()
        //     mov [newid], rax
        if (newid == 0) {
           i = 6;
        } else {
           ++i;
        }
    } 
*/

    if (fork() == 0) {
       cout << "Sleeping " << endl;
       sleep(1);
       cout << "Done Sleeping" << endl;
       Report();
       return 0;
    }

    wait(nullptr);

    Report();

    return 0;
}

void Report() {
    pid_t pid{getpid()};
    pid_t ppid{getppid()};

    cout << endl;
    cout << " My process id is " << pid << endl;
    cout << " My parent process id is " << ppid << endl;
    cout << endl;
}