SlideServe
Télécharger Obtenir Pro
Menu
Accueil Pro
Préférences
ApparenceLight Aide et commentaires
© SlideServe · v2026

Chapter 5: Threads

ohio avatar
ohio
19 diapositives · 383 Views · Aug 09, 2014

Chapter 5: Threads. Overview Multithreading Models Threading Issues Pthreads Solaris 2 Threads Linux Threads Java Threads. Single and Multithreaded Processes. Benefits. Responsiveness Resource Sharing Economy Utilization of MP Architectures. User Threads.

#chapter 5: threads #chapter 5: threads ppt #powerpoint #presentation
Chapter 5: Threads - slide 1
01 / 19Chapter 5: Threads
1 / 17

Télécharger la présentation

Chapter 5: Threads
Une image / un lien ci-dessous est fourni (tel quel) pour télécharger la présentation

Politique de téléchargement : le contenu du site vous est fourni TEL QUEL pour votre information et votre usage personnel ; il ne peut être vendu, concédé sous licence ni partagé sur d’autres sites sans l’accord de son auteur.Le contenu vous est fourni TEL QUEL, pour votre information et votre usage personnel uniquement. Téléchargez la présentation en cliquant sur ce lien. Lors du téléchargement, si vous ne parvenez pas à télécharger une présentation, l’éditeur a peut-être supprimé le fichier de son serveur.Pendant le téléchargement, si vous ne parvenez pas à obtenir une présentation, le fichier a peut-être été supprimé par l’éditeur.

F I N

Plus de contenu associé

Transcription de la présentation

  1. Chapter 5: Threads • Overview • Multithreading Models • Threading Issues • Pthreads • Solaris 2 Threads • Linux Threads • Java Threads Operating System Concepts

  2. Single and Multithreaded Processes Operating System Concepts

  3. Benefits • Responsiveness • Resource Sharing • Economy • Utilization of MP Architectures Operating System Concepts

  4. User Threads • Thread management done by user-level threads library • Examples - POSIX Pthreads - Mach C-threads - Solaris threads Operating System Concepts

  5. Kernel Threads • Supported by the Kernel • Examples - Windows 95/98/NT/2000 - Solaris - Tru64 UNIX - BeOS - Linux Operating System Concepts

  6. Multithreading Models • Many-to-One • One-to-One • Many-to-Many Operating System Concepts

  7. Many-to-One • Many user-level threads mapped to single kernel thread. • Used on systems that do not support kernel threads. Operating System Concepts

  8. Many-to-One Model Operating System Concepts

  9. One-to-One • Each user-level thread maps to kernel thread. • Examples - Windows 95/98/NT/2000 - OS/2 Operating System Concepts

  10. One-to-one Model Operating System Concepts

  11. Many-to-Many Model • Allows many user level threads to be mapped to many kernel threads. • Allows the operating system to create a sufficient number of kernel threads. • Solaris 2 • Windows NT/2000 with the ThreadFiber package Operating System Concepts

  12. Many-to-Many Model Operating System Concepts

  13. Threading Issues • Semantics of fork() and exec() system calls. • Thread cancellation • Asynchronous Cancellation • Deferred Cancellation • Signal handling • Synchronous signals • Asynchronous signals • Thread pools Operating System Concepts

  14. Pthreads • a POSIX standard (IEEE 1003.1c) API for thread creation and synchronization. • API specifies behavior of the thread library, implementation is up to development of the library. • Common in UNIX operating systems. Operating System Concepts

  15. Solaris 2 Threads Operating System Concepts

  16. Solaris Process Operating System Concepts

  17. Linux Threads • Linux refers to them as tasks rather than threads. • Thread creation is done through clone() system call. • Clone() allows a child task to share the address space of the parent task (process) Operating System Concepts

  18. Java Threads • Java threads may be created by: • Extending Thread class • Implementing the Runnable interface • Java threads are managed by the JVM. Operating System Concepts

  19. Java Thread States Operating System Concepts