Operating Systems | 7. Process Synchronization in Real-Time Systems by Pavan | Learn Smarter
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7. Process Synchronization in Real-Time Systems

Process synchronization is crucial in real-time systems to manage concurrent execution of tasks sharing resources. It helps prevent issues like race conditions, deadlocks, and priority inversion, ensuring system reliability and predictability. Various synchronization mechanisms such as mutexes and semaphores are employed for effective task coordination and communication.

Sections

  • 7

    Process Synchronization In Real-Time Systems

    This section covers the importance of process synchronization in real-time systems, emphasizing mechanisms to prevent common issues such as race conditions and deadlocks.

  • 7.1

    Introduction

    Process synchronization is crucial in real-time systems for coordinating tasks that share resources.

  • 7.2

    Need For Synchronization

    Synchronization is crucial in real-time systems to ensure coordinated execution of tasks accessing shared resources.

  • 7.3

    Critical Section Problem

    The critical section problem involves managing shared resources in a way that only one task accesses them at a time to prevent issues like data races.

  • 7.4

    Synchronization Primitives

    Synchronization primitives are essential mechanisms that manage access to shared resources in real-time systems to prevent concurrency-related issues.

  • 7.5

    Mutex Vs Binary Semaphore

    The section differentiates between mutexes and binary semaphores, focusing on their ownership, priority management, and usage in process synchronization.

  • 7.6

    Priority Inversion Problem

    The Priority Inversion Problem arises when low-priority tasks hold resources needed by high-priority tasks, potentially leading to significant system delays.

  • 7.7

    Synchronization In Common Rtos

    This section discusses how various Real-Time Operating Systems (RTOS) implement synchronization through different APIs to manage task execution without conflicts.

  • 7.8

    Event-Based Synchronization

    Event-based synchronization enables tasks in real-time systems to wait for specific events before proceeding.

  • 7.9

    Inter-Task Communication + Synchronization

    This section discusses the use of message queues for both data exchange and synchronization between tasks in real-time systems.

  • 7.10

    Real-Time Considerations

    This section covers essential design considerations for real-time systems regarding synchronization mechanisms, ensuring low latency and predictability while avoiding deadlocks and concurrency issues.

  • 7.11

    Common Issues

    This section discusses common issues faced in process synchronization such as deadlock, starvation, race conditions, and busy waiting.

  • 7.13

    Summary Of Key Concepts

    This section provides an overview of the importance of synchronization in real-time systems, focusing on common mechanisms and avoiding critical issues.

References

ee4-os-7.pdf

Class Notes

Memorization

What we have learnt

  • Process synchronization ens...
  • Mutexes, semaphores, event ...
  • Avoiding race conditions, p...

Final Test

Revision Tests