gc test

README.md

gc test

view on jsgist

index.css

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index.html

/*bug-in-github-api-content-can-not-be-empty*/

index.js

//
//import { createRequire } from 'module';
//const require = createRequire(import.meta.url);
//
//const addon = require('./build/Release/test_addon.node');

async function waitForGC(refs) {
  while (refs.length) {
    gc();
    new Array(100 * 1024 * 1024).fill(123);
    console.log('waiting for:', refs.map(({id}) => id).join(', '));
    await new Promise(resolve => setTimeout(resolve, 1000));
    refs = refs.filter(({ ref, id }) => {
      const referenced = !!ref.deref();
      if (!referenced) {
        console.log(`${id} was garbage collected`);
      }
      return referenced;
    });
  }
}

function makeJSObjects() {
  const a = new Uint32Array(1024*1024);
  const b = new Uint32Array(1024*1024);
  //a.b = b;
  return [new WeakRef(a), new WeakRef(b)];
}

function makeCPPObjects() {
  const initialObject = { message: 'Hello from the initial object!' };
  const a = new addon.MyClass(initialObject);
  const b = new addon.MyClass(initialObject);
  //a.setStoredObject(b);
  //b.setStoredObject(a);

  return [new WeakRef(a), new WeakRef(b)];
}

async function main() {

  const [jsRefA, jsRefB] = makeJSObjects();
  await waitForGC([
    { ref: jsRefA, id: 'jsA' },
    { ref: jsRefB, id: 'jsB' },
  ]);

  const [refA, refB] = makeCPPObjects();

  await waitForGC([
    { ref: refA, id: 'a'},
    { ref: refB, id: 'b'},
  ]);
}

main();

jsGist.json

{"name":"gc test","settings":{},"filenames":["index.html","index.css","index.js"]}