Similarities And Differences In Windows 2000 And Unix

1 Pages 182 Words

A process is the most fundamental tool used in modern operating systems. An operating system’s main role is to create, manage, and terminate processes. These process management functions include allocating time for implementation, managing their actions and conflicts, and allocating resources for the processes. An operating system must track each process by keeping a description, or image, which contains the address space and a control block.
(Stallings 140)
UNIX Process Management
Unix takes advantage of a simple process capability that is easily seen by the user. It executes its process in a user process environment. Two processes are necessary for this system to develop correctly. These include a user process and a system process. The system processes are used to execute code used to carry out in-system functions of the operating system. The user processes are broken down into two separate areas; the user mode and the kernel mode. The user mode is called when the system executes a user program. The kernel mode is used when an interrupt occurs. (Stallings 135)...