Computing with Data

elgeish

613.5K views

GitHub

Open Source Your Knowledge, Become a Contributor

Technology knowledge has to be shared and made accessible for free. Join the movement.

Create Content

Previous: Reader-Writer Locks - Part I Next: Reader-Writer Locks - Part III

Reader-Writer Locks - Part II

In order to return the correct value, we may want to make the cache a mutually exclusive resource by making the following changes to the program:

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
class Writer extends Producer implements Runnable {
  public void run() {
    synchronized (Shared.cache) {
      int[] referenceToValue = Shared.cache.get("key");
      
      for (int i = 0; i < referenceToValue.length; i++) {
        // Update value in-place; sum will add up to length
        referenceToValue[i] = produce();
      }
    }
  }
}
class Reader extends Consumer implements Runnable {
  public void run() {
    synchronized (Shared.cache) {
      consume(Shared.cache.get("key"));
    }
  }
}
// {

Open Source Your Knowledge: become a Contributor and help others learn. Create New Content

Open Source Your Knowledge, Become a Contributor

244/300 Reader-Writer Locks - Part II

Reader-Writer Locks - Part II

PYTHON: BEGINNER QUIZ (10 Questions)

PYTHON STRING METHODS: center(), rjust() and ljust().

Python from Zero to Hero

Beginner Python Concepts