René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"AbortSignal.any() causes memory leak","articleBody":"### Version\n\nv22.6.0\n\n### Platform\n\n```text\nMicrosoft Windows NT 10.0.22631.0 x64\r\nLinux ****** 4.4.0-22621-Microsoft #3672-Microsoft Fri Jan 01 08:00:00 PST 2016 x86_64 x86_64 x86_64 GNU/Linux\n```\n\n\n### Subsystem\n\nhttps://nodejs.org/api/globals.html#class-abortsignal\n\n### What steps will reproduce the bug?\n\nRun this and watch memory usage. \r\n \r\n\r\n```javascript\r\nconst formatMemoryUsage = (data) =\u003e `${Math.round(data / 1024 / 1024 * 100) / 100} MB`;\r\n\r\nlet memoryData = process.memoryUsage();\r\nconsole.log('Mem before loop', formatMemoryUsage(memoryData.rss));\r\n\r\nfor (let i = 0; true; i++) {\r\n    const abortController = new AbortController();\r\n    const signal = abortController.signal;\r\n    const composedSignal = AbortSignal.any([signal]);\r\n\r\n    if (i === 1000000) {\r\n        break;\r\n    }\r\n}\r\n\r\nmemoryData = process.memoryUsage();\r\nconsole.log('Mem after 1 million iteration', formatMemoryUsage(memoryData.rss));\r\n```\r\n\r\nThis is what I get on my local machine \r\n![image](https://github.com/user-attachments/assets/af4db4cd-c1bf-4e51-a0b1-c61e747894f6)\n\n### How often does it reproduce? Is there a required condition?\n\nAlways reproducible as far as I can tell\n\n### What is the expected behavior? Why is that the expected behavior?\n\nMemory post loop execution should be fairly equivalent to the first log but somehow the `const composedSignal = AbortSignal.any([signal]);` does not get cleaned up from memory, I would expect this to get cleaned properly or if this is the intended behavior to have a clear warning in the documentation. \n\n### What do you see instead?\n\nWe see a memory leak that will eventually lead to an out of memory error. \n\n### Additional information\n\nThis has been tested on Node 22.6 on different machine and both Windows + Unix versions. Happy to provide more details if needed ","author":{"url":"https://github.com/Furzel","@type":"Person","name":"Furzel"},"datePublished":"2024-08-28T17:16:11.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/54614/node/issues/54614"}