49 lines
2.0 KiB
JavaScript
49 lines
2.0 KiB
JavaScript
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// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --sampling-heap-profiler-suppress-randomness
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(async function() {
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let {contextGroup, Protocol} = InspectorTest.start('Checks sampling heap profiler methods.');
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contextGroup.addScript(`
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var holder = [];
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function allocateChunk() {
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holder.push(new Array(100000).fill(42));
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}
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//# sourceURL=test.js`);
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Protocol.HeapProfiler.enable();
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const profile0 = await Protocol.HeapProfiler.getSamplingProfile();
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InspectorTest.log('Expected error: ' + profile0.error.message);
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await Protocol.HeapProfiler.startSampling();
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const profile1 = await Protocol.HeapProfiler.getSamplingProfile();
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const size1 = nodeSize(profile1.result.profile.head);
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InspectorTest.log('Allocated size is zero in the beginning:', size1 === 0);
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await Protocol.Runtime.evaluate({ expression: 'allocateChunk()' });
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const profile2 = await Protocol.HeapProfiler.getSamplingProfile();
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const size2 = nodeSize(profile2.result.profile.head);
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InspectorTest.log('Allocated size is more than 100KB after a chunk is allocated:', size2 > 100000);
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await Protocol.Runtime.evaluate({ expression: 'allocateChunk()' });
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const profile3 = await Protocol.HeapProfiler.getSamplingProfile();
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const size3 = nodeSize(profile3.result.profile.head);
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InspectorTest.log('Allocated size increased after one more chunk is allocated:', size3 > size2);
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const profile4 = await Protocol.HeapProfiler.stopSampling();
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const size4 = nodeSize(profile4.result.profile.head);
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InspectorTest.log('Allocated size did not change after stopping:', size4 === size3);
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InspectorTest.log('Successfully finished');
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InspectorTest.completeTest();
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function nodeSize(node) {
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return node.children.reduce((res, child) => res + nodeSize(child),
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node.callFrame.functionName === 'allocateChunk' ? node.selfSize : 0);
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}
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})();
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