Consider the figure 4.5

if the current entry in a particular pcb is zombie what are the possible next values of this entry immediately after a change in this entry?

THE ABSTRACTION: THE PROC // the registers xv6 will save and restore // to stop and subsequently restart a process struct context ( int eip; int esp; int ebx; int ecx; int edx; int esi; int edi int ebp: unat are te o // the different states a process can be in enum proc_state UNUSED, EMBRYO, SLEEPING, RUNNABLE, RUNNING, ZOMBIE // the information xv6 tracks about each process // including its register context and state struct proc i char mem; uint sz; char +kstack; /I Start of process memory // Size of process memory // Bottom of kernel stack / for this process // Process state // Process ID enum proc state state: int pid; struct proc *parenti void +chan; int killed; struct file ofile(NOFILEl: // Open files struct inode .cwd; struct context context; struct trapframe tf // Parent process // If non-zero, sleeping on chan // If non-zero, have been killed // Current directory // Switch here to run process // Trap frame for the /1 current interrupt li Figure 4.5: The xv6 Proc Structure You can also see from the figure that there are some other states a pr THE ABSTRACTION: THE PROC // the registers xv6 will save and restore // to stop and subsequently restart a process struct context ( int eip; int esp; int ebx; int ecx; int edx; int esi; int edi int ebp: unat are te o // the different states a process can be in enum proc_state UNUSED, EMBRYO, SLEEPING, RUNNABLE, RUNNING, ZOMBIE // the information xv6 tracks about each process // including its register context and state struct proc i char mem; uint sz; char +kstack; /I Start of process memory // Size of process memory // Bottom of kernel stack / for this process // Process state // Process ID enum proc state state: int pid; struct proc *parenti void +chan; int killed; struct file ofile(NOFILEl: // Open files struct inode .cwd; struct context context; struct trapframe tf // Parent process // If non-zero, sleeping on chan // If non-zero, have been killed // Current directory // Switch here to run process // Trap frame for the /1 current interrupt li Figure 4.5: The xv6 Proc Structure You can also see from the figure that there are some other states a pr