parent            146 proc.c           np->parent = proc;
parent            197 proc.c           wakeup1(proc->parent);
parent            201 proc.c             if(p->parent == proc){
parent            202 proc.c               p->parent = initproc;
parent            227 proc.c               if(p->parent != proc)
parent            238 proc.c                 p->parent = 0;
parent             61 proc.h           struct proc *parent;         // Parent process