This is the program I am working with

Follow the example for process state transitions, add the events that occur during execution (in addition to the ones that are given). ONLY IN THE AREA WITH THE "?" question mark

-- Event: user runs the program ready

Program P;

-- Event: scheduled to run running (context switch)

read (x);

-- Event: I/O statement blocked

Switch to execute another process (context switch)

-- Event: scheduled to run running (context switch)

compute factorial of x;

print (x);

-- Event: ?

-- Event: ?

pid = fork ();

-- Event: system call Blocked

Switch to kernel mode to handle fork (context switch)

OS creates the child process, put it in ready queue

Switch back to run parent process in user mode (context switch)

if (pid == 0)

-- Event: Event: scheduled to run childe process running (context switch)

{ read (y);

-- Event: ?

-- Event: scheduled to run running (context switch)

compute factorial of y;

print (y);

-- Event: I/O statement blocked

Before blocked, switch to kernel mode to handle read

Switch to execute another process (context switch)

-- Event: scheduled to run running (context switch)

Child process terminates, switch to another process

else /* parent process */

wait (pid);

-- Event: ?

-- while waiting, child processs read (y) is done

-- Event: CPU switches to interrupt handler and put child process in ready state

-- while waiting, child processs print (y) is done

-- Event: ?

-- Event: user runs the program ready

Program Q;

-- Event: scheduled to run running (context switch)

initialize matrix A using random number generator;

-- I/O interrupt: Ps read (x) operation is done

-- Event: CPU switches to interrupt handler and put P in ready state

-- Event: CPU continue to execute the original running process

initialize matrix B using random number generator;

-- I/O interrupt: Ps print (x) operation is done

-- Event: ?

-- Event: ?

create a thread to compute A*B;

-- Event: Nothing, since it is a user level thread

}

please help there are 7 question marks

Program P: read(x); compute factorial of x; print(x); pid = fork(); if (pid == 0) read(y); compute factorial of y; print(y): else /* parent process * wait (pid); -- while waiting, child process's "read (y)" is done -- while waiting, child process's "print (y)" is done Program Q: initialize matrix A using random number generator; -- I/O interrupt: P's "read (x)" operation is done initialize matrix B using random number generator; -- I/O interrupt: P's "print (x)" operation is done create a thread to compute A B; } Program P: read(x); compute factorial of x; print(x); pid = fork(); if (pid == 0) read(y); compute factorial of y; print(y): else /* parent process * wait (pid); -- while waiting, child process's "read (y)" is done -- while waiting, child process's "print (y)" is done Program Q: initialize matrix A using random number generator; -- I/O interrupt: P's "read (x)" operation is done initialize matrix B using random number generator; -- I/O interrupt: P's "print (x)" operation is done create a thread to compute A B; }