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// Copyright (C) 2019 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import {
TrackController,
trackControllerRegistry
} from '../../controller/track_controller';
import {
Config,
Data,
HEAP_PROFILE_TRACK_KIND,
} from './common';
class HeapProfileTrackController extends TrackController<Config, Data> {
static readonly kind = HEAP_PROFILE_TRACK_KIND;
async onBoundsChange(start: number, end: number, resolution: number):
Promise<Data> {
if (this.config.upid === undefined) {
return {start, end, resolution, length: 0, tsStarts: new Float64Array()};
}
const result = await this.query(`
select distinct(ts) from heap_profile_allocation where upid = ${
this.config.upid}`);
const numRows = +result.numRecords;
const data: Data = {
start,
end,
resolution,
length: numRows,
tsStarts: new Float64Array(numRows),
};
for (let row = 0; row < numRows; row++) {
data.tsStarts[row] = +result.columns[0].longValues![row];
}
return data;
}
}
trackControllerRegistry.register(HeapProfileTrackController);
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