Pointers or fork?

[simpatico_qa]

Hello,

I don't know where is the problem in my code, since in the debbuger I cannot see what goes on with the child process. May someone help.

void addJob(int pid, int status){
    jobs* temp = job;
    if (temp == NULL){
    	temp = malloc(sizeof(jobs*));
    	job = temp;
    }
    else{
    	while (temp != NULL) temp = temp->next;
    	temp = malloc(sizeof(jobs*));
    }
    temp->pid = pid;
    temp->status = status; /* foreground */
}


exe(){
....

    if (pid == 0){
    	pid_t npid = getpid();
    	printf("If successful, the process ID will be %d.\n",npid); fflush(stdout); /* I know it reaches here */
    	addJob(npid, (bg)? 0:1);
    	if (execvp(*args, args) == -1){ perror("executing command\n"); exit(1);}
    }

where job is a global variable.
May I know why the statement is not executed, or is so but not adding to the list? Is it an issue of shared memory amongst the processes? I've put jobs as a static variable in a header file and imported it but I still get no difference.

[brewbuck]

forked processes do NOT share memory.

You need to get the child pid in the PARENT (it is the return value of fork() ) and insert it into the job list in the PARENT.

EDIT: addJob() looks all wrong, too, but that's a different issue.

[simpatico_qa]

I know other methods to add an element to the end of a list, but just for my better understanding, may you tell me what's wrong such that I fix this itself?