| (async function(testRunner) { |
| var {page, session, dp} = await testRunner.startBlank( |
| `Test sampling native memory profiler (PartitionAlloc hook).`); |
| |
| const chunkSize = 100000; |
| await dp.Memory.startSampling({samplingInterval: chunkSize, suppressRandomness: true}); |
| testRunner.log('Sampling started'); |
| await session.evaluate(`window.memoryChunk = new Uint8Array(${chunkSize});`); |
| const message = await dp.Memory.getSamplingProfile(); |
| await dp.Memory.stopSampling(); |
| testRunner.log('Sampling stopped'); |
| |
| const profile = message.result.profile; |
| const foundTheSample = profile.samples.some(sample => |
| sample.size >= chunkSize && sample.stack.some(frame => frame.includes('ArrayBuffer'))); |
| testRunner.log('Found sample: ' + foundTheSample); |
| if (!foundTheSample) |
| testRunner.log(profile); |
| |
| testRunner.completeTest(); |
| }) |