process creation

we want to create processes FAST!

tricks to make creating processes fast:
- copy-on-write (COW)

• lightweight process creation (uses kernel_clone())

other interesting syscalls

man clone - not fork! can write to the same virtual mem

man vfork - similar to clone(), but the parent will block until the child exits or performs execve()

• execve() loads a new executable and rewrites the memory space

os processes