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// Copyright (C) 2023 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 {Vnode} from 'mithril';
import {colorForString} from '../../common/colorizer';
import {PluginContext} from '../../common/plugin_api';
import {NUM, STR} from '../../common/query_result';
import {fromNs, TPDuration} from '../../common/time';
import {TPTime} from '../../common/time';
import {TrackData} from '../../common/track_data';
import {LIMIT} from '../../common/track_data';
import {
TrackController,
} from '../../controller/track_controller';
import {checkerboardExcept} from '../../frontend/checkerboard';
import {globals} from '../../frontend/globals';
import {NewTrackArgs, Track} from '../../frontend/track';
export interface Data extends TrackData {
timestamps: Float64Array;
names: string[];
}
export interface Config {
cpu?: number;
}
export const FTRACE_RAW_TRACK_KIND = 'FtraceRawTrack';
const MARGIN = 2;
const RECT_HEIGHT = 18;
const TRACK_HEIGHT = (RECT_HEIGHT) + (2 * MARGIN);
class FtraceRawTrackController extends TrackController<Config, Data> {
static readonly kind = FTRACE_RAW_TRACK_KIND;
async onBoundsChange(start: TPTime, end: TPTime, resolution: TPDuration):
Promise<Data> {
const excludeList = Array.from(globals.state.ftraceFilter.excludedNames);
const excludeListSql = excludeList.map((s) => `'${s}'`).join(',');
const cpuFilter =
this.config.cpu === undefined ? '' : `and cpu = ${this.config.cpu}`;
const queryRes = await this.query(`
select
cast(ts / ${resolution} as integer) * ${resolution} as tsQuant,
type,
name
from ftrace_event
where
name not in (${excludeListSql}) and
ts >= ${start} and ts <= ${end} ${cpuFilter}
group by tsQuant
order by tsQuant limit ${LIMIT};`);
const rowCount = queryRes.numRows();
const result: Data = {
start,
end,
resolution,
length: rowCount,
timestamps: new Float64Array(rowCount),
names: [],
};
const it = queryRes.iter(
{tsQuant: NUM, type: STR, name: STR},
);
for (let row = 0; it.valid(); it.next(), row++) {
result.timestamps[row] = fromNs(it.tsQuant);
result.names[row] = it.name;
}
return result;
}
}
export class FtraceRawTrack extends Track<Config, Data> {
static readonly kind = FTRACE_RAW_TRACK_KIND;
constructor(args: NewTrackArgs) {
super(args);
}
static create(args: NewTrackArgs): FtraceRawTrack {
return new FtraceRawTrack(args);
}
getHeight(): number {
return TRACK_HEIGHT;
}
renderCanvas(ctx: CanvasRenderingContext2D): void {
const {
visibleTimeScale,
windowSpan,
} = globals.frontendLocalState;
const data = this.data();
if (data === undefined) return; // Can't possibly draw anything.
const dataStartPx = visibleTimeScale.tpTimeToPx(data.start);
const dataEndPx = visibleTimeScale.tpTimeToPx(data.end);
const visibleStartPx = windowSpan.start;
const visibleEndPx = windowSpan.end;
checkerboardExcept(
ctx,
this.getHeight(),
visibleStartPx,
visibleEndPx,
dataStartPx,
dataEndPx);
const diamondSideLen = RECT_HEIGHT / Math.sqrt(2);
for (let i = 0; i < data.timestamps.length; i++) {
const name = data.names[i];
const color = colorForString(name);
const hsl = `hsl(
${color.h},
${color.s - 20}%,
${Math.min(color.l + 10, 60)}%
)`;
ctx.fillStyle = hsl;
const xPos = Math.floor(visibleTimeScale.secondsToPx(data.timestamps[i]));
// Draw a diamond over the event
ctx.save();
ctx.translate(xPos, MARGIN);
ctx.rotate(Math.PI / 4);
ctx.fillRect(0, 0, diamondSideLen, diamondSideLen);
ctx.restore();
}
}
getContextMenu(): Vnode<any, {}>|null {
return null;
}
}
function activate(ctx: PluginContext) {
ctx.registerTrack(FtraceRawTrack);
ctx.registerTrackController(FtraceRawTrackController);
}
export const plugin = {
pluginId: 'perfetto.FtraceRaw',
activate,
};
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