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| 1 | +import { mustCall } from '../common/index.mjs'; |
| 2 | +import { Readable } from 'node:stream'; |
| 3 | +import { memoryUsage } from 'node:process'; |
| 4 | +import assert from 'node:assert'; |
| 5 | +import { setImmediate } from 'node:timers/promises'; |
| 6 | + |
| 7 | +// Based on: https://github.com/nodejs/node/issues/46347#issuecomment-1413886707 |
| 8 | +// edit: make it cross-platform as /dev/urandom is not available on Windows |
| 9 | + |
| 10 | +const MAX_MEM = 256 * 1024 * 1024; // 256 MiB |
| 11 | + |
| 12 | +function checkMemoryUsage() { |
| 13 | + assert(memoryUsage().arrayBuffers < MAX_MEM); |
| 14 | +} |
| 15 | + |
| 16 | +const MAX_BUFFERS = 1000; |
| 17 | +let buffersCreated = 0; |
| 18 | + |
| 19 | +const randomNodeStream = new Readable({ |
| 20 | + read(size) { |
| 21 | + if (buffersCreated >= MAX_BUFFERS) { |
| 22 | + this.push(null); |
| 23 | + return; |
| 24 | + } |
| 25 | + |
| 26 | + this.push(Buffer.alloc(size)); |
| 27 | + buffersCreated++; |
| 28 | + } |
| 29 | +}); |
| 30 | + |
| 31 | +randomNodeStream.on('error', (err) => { |
| 32 | + assert.fail(err); |
| 33 | +}); |
| 34 | + |
| 35 | +// Before doing anything, make sure memory usage is okay |
| 36 | +checkMemoryUsage(); |
| 37 | + |
| 38 | +// Create stream and check memory usage remains okay |
| 39 | + |
| 40 | +const randomWebStream = Readable.toWeb(randomNodeStream); |
| 41 | + |
| 42 | +checkMemoryUsage(); |
| 43 | + |
| 44 | +let timeout; |
| 45 | +try { |
| 46 | + // Wait two seconds before consuming the stream to see if memory usage increases |
| 47 | + timeout = setTimeout(mustCall(async () => { |
| 48 | + // Did the stream leak memory? |
| 49 | + checkMemoryUsage(); |
| 50 | + // eslint-disable-next-line no-unused-vars |
| 51 | + for await (const _ of randomWebStream) { |
| 52 | + // Yield event loop to allow garbage collection |
| 53 | + await setImmediate(); |
| 54 | + // consume the stream |
| 55 | + // check memory usage remains okay |
| 56 | + checkMemoryUsage(); |
| 57 | + } |
| 58 | + }), 2000); |
| 59 | +} catch (err) { |
| 60 | + if (timeout) { |
| 61 | + clearTimeout(timeout); |
| 62 | + } |
| 63 | + assert.fail(err); |
| 64 | +} |
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