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This provides coverage for the `InspectorTimer` instances created as part of heap allocation tracking. PR-URL: https://github.com/nodejs/node/pull/26089 Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com> Reviewed-By: James M Snell <jasnell@gmail.com>
47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
'use strict';
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const common = require('../common');
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common.skipIfInspectorDisabled();
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const assert = require('assert');
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const inspector = require('inspector');
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const stream = require('stream');
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const { Worker, workerData } = require('worker_threads');
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const session = new inspector.Session();
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session.connect();
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session.post('HeapProfiler.enable');
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session.post('HeapProfiler.startTrackingHeapObjects',
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{ trackAllocations: true });
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// Perform some silly heap allocations for the next 100 ms.
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const interval = setInterval(() => {
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new stream.PassThrough().end('abc').on('data', common.mustCall());
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}, 1);
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setTimeout(() => {
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clearInterval(interval);
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// Once the main test is done, we re-run it from inside a Worker thread
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// and stop early, as that is a good way to make sure the timer handles
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// internally created by the inspector are cleaned up properly.
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if (workerData === 'stopEarly')
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process.exit();
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let data = '';
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session.on('HeapProfiler.addHeapSnapshotChunk',
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common.mustCallAtLeast((event) => {
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data += event.params.chunk;
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}));
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// TODO(addaleax): Using `{ reportProgress: true }` crashes the process
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// because the progress indication event would mean calling into JS while
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// a heap snapshot is being taken, which is forbidden.
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// What can we do about that?
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session.post('HeapProfiler.stopTrackingHeapObjects');
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assert(data.includes('PassThrough'), data);
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new Worker(__filename, { workerData: 'stopEarly' });
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}, 100);
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