Ch 4: Concurrency in Operating Systems

About This Chapter

If you need to review the basics of concurrency in operating systems for an upcoming exam, homework assignment or class project, take a look at this self-paced online computer science chapter. The chapter contains fun lessons and interactive quizzes that can be accessed at any time.

Concurrency in Operating Systems - Chapter Summary

For an overview of concurrency in operating systems, check out this chapter's short and engaging lessons. Our expert computer science instructors define and explain important terms and concepts related to job scheduling, scheduling policies, atomic operations, threads, process synchronization, process cooperation and much more. Each lesson comes with a short quiz to help you see how well you understand the information. The chapter is accessible on any Internet-connected device, and you can submit questions to our instructors if you need any extra help. Studying this chapter can help you:

  • Assess the purpose of job scheduling in an operating system
  • Explain why scheduling policies are important in operating systems
  • Compare operating system process states
  • Differentiate between preemptive and non-preemptive process scheduling
  • Discuss the components of deadline scheduling
  • Evaluate the uses of interrupts and atomic operations
  • Analyze examples of deadlock avoidance
  • Identify the origins of handling starvation
  • Define threads and interpret thread state diagrams
  • Describe the relationship between concurrency and mutual exclusion
  • Outline the process of synchronization and cooperation in operating systems
  • Understand the practical applications of multithreading and schedule process coding

16 Lessons in Chapter 4: Concurrency in Operating Systems
Test your knowledge with a 30-question chapter practice test
Job Scheduling in Operating Systems

1. Job Scheduling in Operating Systems

In this lesson, we'll take a look at operating systems, what they are, what a job is, what job scheduling is, what job scheduling is used for, and why it's important.

Scheduling Policies for Operating Systems: Importance & Criteria

2. Scheduling Policies for Operating Systems: Importance & Criteria

In this lesson, you will learn how processes are scheduled by operating systems, what criteria is used for scheduling processes, and what scheduling policies are used by operating system to improve efficiency.

Process in Operating Systems: Definition, Scheduling & States

3. Process in Operating Systems: Definition, Scheduling & States

This lesson will introduce you to operating system processes and how they differ from a program. We will learn about the basics of processes, how they are scheduled, and the various states of a process.

Preemptive vs. Non-Preemptive Process Scheduling

4. Preemptive vs. Non-Preemptive Process Scheduling

A process scheduler plays an important role in scheduling processes in an operating system. In this lesson, we'll learn about preemptive and non-preemptive scheduling and discuss the various types of scheduling algorithms used by a process scheduler.

Deadline Scheduling for Real-Time Systems

5. Deadline Scheduling for Real-Time Systems

Real-time systems are all around us. They are in our home appliances, banking ATM's, cash registers, and even in trains, planes, and automobiles. Real-time systems outnumber all other types of computers. This lesson provides a detailed look at how real-time systems schedule the tasks that control our world.

Interrupts & Atomic Operations: Definition, Use & Examples

6. Interrupts & Atomic Operations: Definition, Use & Examples

In this lesson, you will learn about interrupts, why they are very important in computing, but also when they must be disabled. You will learn about atomic operations and context switching.

What is Deadlock? - Definition, Examples & Avoidance

7. What is Deadlock? - Definition, Examples & Avoidance

A deadlock is a situation faced by current operating systems in order to deal with multiple processes. This lesson will help you understand the reasons why deadlock happens, its prevention methods, and how to recover from a deadlock situation.

Handling Starvation in Operating Systems: Origin & Solution

8. Handling Starvation in Operating Systems: Origin & Solution

This lesson will explain what starvation means in the context of operating systems, why it happens and how to deal with it. We will also discuss a case study related to starvation in operating system scheduling context.

Threads in an Operating System: Definition & Examples

9. Threads in an Operating System: Definition & Examples

In this lesson, you will learn about threads in an operating system and how they work with processes. We will discuss the differences between threads and processes and also understand the concept of multi-threading.

Thread State Diagrams, Scheduling & Switches

10. Thread State Diagrams, Scheduling & Switches

In this lesson, you will learn how threads are handled by an operating system. You will learn how to interpret a thread state diagram, and describe how an operating system schedules threads and switches among them.

Concurrency & Mutual Exclusion in Operating Systems

11. Concurrency & Mutual Exclusion in Operating Systems

In this lesson, you will learn about concurrent processes and how they work with the same resources. We will cover the topic of concurrency and how mutual exclusion can solve problems of concurrency in operating systems.

Process Synchronization in Operating Systems: Definition & Mechanisms

12. Process Synchronization in Operating Systems: Definition & Mechanisms

This lesson describes process synchronization and explains how it is managed by the operating system. It also explains the synchronization mechanisms, such as wait() and signal(), as well as semaphores and race conditions.

Process Cooperation in Operating Systems: Definition & Examples

13. Process Cooperation in Operating Systems: Definition & Examples

In this lesson, you will learn about operating system processes. You will also learn about how and why a system needs to work together to ensure the successful completion of all tasks. We will discuss the advantages of cooperating processes, and detail a common problem used to better understand cooperating processes: the producer-consumer problem.

Practical Application for Operating Systems: Code for Schedule Processes

14. Practical Application for Operating Systems: Code for Schedule Processes

In this lesson, we will be learning how different scheduling algorithms work with a simple C programming language execution, the main differences between them, and which one could fit better for different processing times.

Practical Application for Operating Systems: Multithreading

15. Practical Application for Operating Systems: Multithreading

In this practical lesson, you will write a practical application that implements multi-threading using mutual exclusion. You will write, compile, run, and test your application.

Required Assignments Reminder

16. Required Assignments Reminder

Sorry for the interruption to your course progress! We wanted to make sure you knew this course has a written assignment requirement in order to be completed. Read on to learn where to find these assignments and how to submit them.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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