ECMAScript Cookbook

How to do it...

1. Open your command-line application, and navigate to your workspace.
2. Create a new folder named 05-05-creating-shared-array-buffer.
3. Copy or create an index.html that loads and runs a main function from main.js.

4. Create a main.js file with a main method that defines constants for NUM_COUNT, BYTES_FOR_32_BIT, ARRAY_SIZE, and MAX_NUMBER:

export function main() { 
  const NUM_COUNT = 2048; 
  const BYTES_FOR_32_BIT = 4; 
  const ARRAY_SIZE = NUM_COUNT * BYTES_FOR_32_BIT; 
  const MAX_NUMBER = 1024; 
} 

5. Next, create a SharedArrayBuffer that is of size ARRAY_SIZE, and create an Int32Array casting of it:

export function main() { 
  // ... 
  const sab = new SharedArrayBuffer(ARRAY_SIZE);  const intBuffer = new Int32Array(sab);
}  

6. Fill the intBuffer ...