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