Created
May 24, 2023 06:18
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Is growable SAB GC-able?
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1" /> | |
| <title>SharedArrayBuffer GC test</title> | |
| </head> | |
| <body> | |
| <div id="root"></div> | |
| <script type="module"> | |
| let registry = new FinalizationRegistry(v => { | |
| console.log('Just finalized ', v); | |
| }); | |
| let sab = new SharedArrayBuffer(4 * 1024 * 1024); | |
| let growableSab = new SharedArrayBuffer(0, { maxByteLength: 4 * 1024 * 1024 }); | |
| registry.register(sab, "sab"); | |
| registry.register(growableSab, "growable sab"); | |
| let worker = new Worker('worker.js', { type: 'module' }); | |
| worker.postMessage({ sab }); | |
| worker.postMessage({ sab: growableSab }); | |
| (function() { | |
| console.log("grow sab"); | |
| growableSab.grow(4 * 1024 * 1024); | |
| registry.register({}, "tmp"); | |
| })(); | |
| </script> | |
| </body> | |
| </html> |
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| console.log('Hello from Worker!', location.origin); | |
| self.addEventListener('message', e => { | |
| test(e.data.sab); | |
| }); | |
| function test(sab) { | |
| console.log('Initilized with ', { sab }); | |
| } |
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