1// Copyright (C) 2021 The Android Open Source Project 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15import {NUM} from '../../common/query_result'; 16import { 17 TrackController, 18 trackControllerRegistry 19} from '../../controller/track_controller'; 20 21import { 22 Config, 23 Data, 24 PERF_SAMPLES_PROFILE_TRACK_KIND, 25} from './common'; 26 27class PerfSamplesProfileTrackController extends TrackController<Config, Data> { 28 static readonly kind = PERF_SAMPLES_PROFILE_TRACK_KIND; 29 async onBoundsChange(start: number, end: number, resolution: number): 30 Promise<Data> { 31 if (this.config.upid === undefined) { 32 return { 33 start, 34 end, 35 resolution, 36 length: 0, 37 tsStartsNs: new Float64Array() 38 }; 39 } 40 const queryRes = await this.query(` 41 select ts, upid from perf_sample 42 join thread using (utid) 43 where upid = ${this.config.upid} 44 order by ts`); 45 const numRows = queryRes.numRows(); 46 const data: Data = { 47 start, 48 end, 49 resolution, 50 length: numRows, 51 tsStartsNs: new Float64Array(numRows) 52 }; 53 54 const it = queryRes.iter({ts: NUM}); 55 for (let row = 0; it.valid(); it.next(), row++) { 56 data.tsStartsNs[row] = it.ts; 57 } 58 return data; 59 } 60} 61 62trackControllerRegistry.register(PerfSamplesProfileTrackController); 63