Objectives Operating System Services Operating System Services Cont

Objectives

Operating System Services

Operating System Services (Cont. )

Operating System Services (Cont. )

A View of Operating System Services

User and Operating-System Interface

Command Interpreters

Command Interpreters

Graphical User Interface (GUI)

Choice of Interface

System Calls (1)

System Calls (2)

System Calls (3)

System Calls (4)

System Calls (5)

System Calls (6)

System Calls (7)

System Calls (8)

Types of System Calls

Types of System Calls

process, control – System Calls (1)

process, control – System Calls (2)

process, control – System Calls (3)

process, control – System Calls (4)

process, control – System Calls (5)

process, control – System Calls (8)

process, control – System Calls (9)

File Management – System Calls

Device Management – System Calls

Information Maintenance

Communication

Message-passing model (1)

Message-passing model (2)

Shared-memory Model

Pro and Cons

System Programs (1)

System Programs (2)

System Programs (3)

OS Design Goals

Design Goals - User goals

Design Goals - System goals

Mechanisms and Policies (1)

Mechanisms and Policies (2)

Mechanisms and Policies (3)

Mechanisms and Policies (4)

Implementation

Operating-System Structure

Simple Structure (1)

Simple Structure (2)

Simple Structure (3)

Simple Structure (4)

Layered Approach (1)

Layered Approach (2)

Micro-kernels (1)

Micro-kernels (2)

Micro-kernels (3)

Micro-kernels (4)

Modules (1)

Modules (2)

Modules (3)

Modules (4)

Hybrid Systems (1)

Hybrid Systems (2)

i. OS

Android

Android (1)

Android (2)

Performance Tuning

Exercises (1)

Exercises (2)

Exercises (3)