Virtual Thread - 導入の背景と、効果的な使い方 -

2023.01.21 ブリ会議 発表資料

Transcript

1. - -
   

   View Slide

2. •
   •
   •
   •
   •
   •
   

   View Slide

3. •
   •
   •
   •
   

   View Slide

4. •
   •
   •
   →
   

   View Slide

5. View Slide

6. •
   •
   •
   →
   •
   

   View Slide

7. •
   •
   •
   •
   •
   

   View Slide

8. public class ThreadPoolExecutor
   extends AbstractExecutorService {
   ...
   private final class Worker
   extends AbstractQueuedSynchronizer
   implements Runnable {
   Worker(Runnable firstTask) {
   setState(-1);
   this.firstTask = firstTask;
   this.thread
   = getThreadFactory().newThread(this);
   }
   ...
   

   View Slide

9. •
   •
   •
   

   View Slide

10. •
    •
    •
    •
    •
    •
    •
    

    View Slide

11. •
    •
    •
    

    View Slide

12. •
    •
    •
    •
    •
    •
    •
    

    View Slide

13. View Slide

14. View Slide

15. View Slide

16. View Slide

17. View Slide

18. int blockingRead(byte[] b, int off, int len, long nanos)
    throws IOException {
    ...
    // read, no timeout
    configureSocketNonBlockingIfVirtualThread();
    n = tryRead(b, off, len);
    while (IOStatus.okayToRetry(n) && isOpen()) {
    park(Net.POLLIN);
    n = tryRead(b, off, len);
    }
    ...
    

    View Slide

19. •
    •
    •
    •
    •
    •
    •
    •
    

    View Slide

20. •
    •
    •
    •
    •
    

    View Slide

21. •
    •
    •
    •
    

    View Slide

22. •
    •
    •
    •
    

    View Slide

23. •
    •
    •
    •
    •
    •
    •
    

    View Slide

24. •
    •
    •
    •
    •
    •
    •
    

    View Slide

25. - -
    

    View Slide