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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 {search} from '../../base/binary_search';
import {assertTrue} from '../../base/logging';
import {TrackState} from '../../common/state';
import {checkerboardExcept} from '../../frontend/checkerboard';
import {hueForCpu} from '../../frontend/colorizer';
import {globals} from '../../frontend/globals';
import {Track} from '../../frontend/track';
import {trackRegistry} from '../../frontend/track_registry';
import {
Config,
CPU_FREQ_TRACK_KIND,
Data,
} from './common';
// 0.5 Makes the horizontal lines sharp.
const MARGIN_TOP = 4.5;
const RECT_HEIGHT = 20;
class CpuFreqTrack extends Track<Config, Data> {
static readonly kind = CPU_FREQ_TRACK_KIND;
static create(trackState: TrackState): CpuFreqTrack {
return new CpuFreqTrack(trackState);
}
private mouseXpos = 0;
private hoveredValue: number|undefined = undefined;
private hoveredTs: number|undefined = undefined;
private hoveredTsEnd: number|undefined = undefined;
private hoveredIdle: number|undefined = undefined;
constructor(trackState: TrackState) {
super(trackState);
}
getHeight() {
return MARGIN_TOP + RECT_HEIGHT;
}
renderCanvas(ctx: CanvasRenderingContext2D): void {
// TODO: fonts and colors should come from the CSS and not hardcoded here.
const {timeScale, visibleWindowTime} = globals.frontendLocalState;
const data = this.data();
if (data === undefined) return; // Can't possibly draw anything.
assertTrue(data.tsStarts.length === data.freqKHz.length);
assertTrue(data.freqKHz.length === data.idles.length);
const startPx = Math.floor(timeScale.timeToPx(visibleWindowTime.start));
const endPx = Math.floor(timeScale.timeToPx(visibleWindowTime.end));
const zeroY = MARGIN_TOP + RECT_HEIGHT;
let lastX = startPx;
let lastY = zeroY;
// Quantize the Y axis to quarters of powers of tens (7.5K, 10K, 12.5K).
let yMax = data.maximumValue;
const kUnits = ['', 'K', 'M', 'G', 'T', 'E'];
const exp = Math.ceil(Math.log10(Math.max(yMax, 1)));
const pow10 = Math.pow(10, exp);
yMax = Math.ceil(yMax / (pow10 / 4)) * (pow10 / 4);
const unitGroup = Math.floor(exp / 3);
const num = yMax / Math.pow(10, unitGroup * 3);
// The values we have for cpufreq are in kHz so +1 to unitGroup.
const yLabel = `${num} ${kUnits[unitGroup + 1]}Hz`;
// Draw the CPU frequency graph.
const hue = hueForCpu(this.config.cpu);
let saturation = 45;
if (globals.frontendLocalState.hoveredUtid !== -1) {
saturation = 0;
}
ctx.fillStyle = `hsl(${hue}, ${saturation}%, 70%)`;
ctx.strokeStyle = `hsl(${hue}, ${saturation}%, 55%)`;
ctx.beginPath();
ctx.moveTo(lastX, lastY);
for (let i = 0; i < data.freqKHz.length; i++) {
const value = data.freqKHz[i];
const startTime = data.tsStarts[i];
const nextY = zeroY - Math.round((value / yMax) * RECT_HEIGHT);
if (nextY === lastY) continue;
lastX = Math.floor(timeScale.timeToPx(startTime));
ctx.lineTo(lastX, lastY);
ctx.lineTo(lastX, nextY);
lastY = nextY;
}
// Find the end time for the last frequency event and then draw
// down to zero to show that we do not have data after that point.
const endTime = data.tsEnds[data.freqKHz.length - 1];
const finalX = Math.floor(timeScale.timeToPx(endTime));
ctx.lineTo(finalX, lastY);
ctx.lineTo(finalX, zeroY);
ctx.lineTo(endPx, zeroY);
ctx.closePath();
ctx.fill();
ctx.stroke();
// Draw CPU idle rectangles that overlay the CPU freq graph.
ctx.fillStyle = `rgba(240, 240, 240, 1)`;
const bottomY = MARGIN_TOP + RECT_HEIGHT;
for (let i = 0; i < data.freqKHz.length; i++) {
if (data.idles[i] >= 0) {
const value = data.freqKHz[i];
const firstX = Math.floor(timeScale.timeToPx(data.tsStarts[i]));
const secondX = Math.floor(timeScale.timeToPx(data.tsEnds[i]));
const lastY = zeroY - Math.round((value / yMax) * RECT_HEIGHT);
ctx.fillRect(firstX, bottomY, secondX - firstX, lastY - bottomY);
}
}
ctx.font = '10px Roboto Condensed';
if (this.hoveredValue !== undefined && this.hoveredTs !== undefined) {
let text = `${this.hoveredValue.toLocaleString()}kHz`;
if (data.isQuantized) {
text = `${this.hoveredValue.toLocaleString()}kHz (weighted avg)`;
}
ctx.fillStyle = `hsl(${hue}, 45%, 75%)`;
ctx.strokeStyle = `hsl(${hue}, 45%, 45%)`;
const xStart = Math.floor(timeScale.timeToPx(this.hoveredTs));
const xEnd = this.hoveredTsEnd === undefined ?
endPx :
Math.floor(timeScale.timeToPx(this.hoveredTsEnd));
const y = zeroY - Math.round((this.hoveredValue / yMax) * RECT_HEIGHT);
// Highlight line.
ctx.beginPath();
ctx.moveTo(xStart, y);
ctx.lineTo(xEnd, y);
ctx.lineWidth = 3;
ctx.stroke();
ctx.lineWidth = 1;
// Draw change marker.
ctx.beginPath();
ctx.arc(xStart, y, 3 /*r*/, 0 /*start angle*/, 2 * Math.PI /*end angle*/);
ctx.fill();
ctx.stroke();
// Display idle value if current hover is idle.
if (this.hoveredIdle !== undefined && this.hoveredIdle !== -1) {
// Display the idle value +1 to be consistent with catapult.
text += ` (Idle: ${(this.hoveredIdle + 1).toLocaleString()})`;
}
// Draw the tooltip.
this.drawTrackHoverTooltip(ctx, this.mouseXpos, text);
}
// Write the Y scale on the top left corner.
ctx.textBaseline = 'alphabetic';
ctx.fillStyle = 'rgba(255, 255, 255, 0.6)';
ctx.fillRect(0, 0, 42, 18);
ctx.fillStyle = '#666';
ctx.textAlign = 'left';
ctx.fillText(`${yLabel}`, 4, 14);
// If the cached trace slices don't fully cover the visible time range,
// show a gray rectangle with a "Loading..." label.
checkerboardExcept(
ctx,
this.getHeight(),
timeScale.timeToPx(visibleWindowTime.start),
timeScale.timeToPx(visibleWindowTime.end),
timeScale.timeToPx(data.start),
timeScale.timeToPx(data.end));
}
onMouseMove({x}: {x: number, y: number}) {
const data = this.data();
if (data === undefined) return;
this.mouseXpos = x;
const {timeScale} = globals.frontendLocalState;
const time = timeScale.pxToTime(x);
const index = search(data.tsStarts, time);
this.hoveredTs = index === -1 ? undefined : data.tsStarts[index];
this.hoveredTsEnd = index === -1 ? undefined : data.tsEnds[index];
this.hoveredValue = index === -1 ? undefined : data.freqKHz[index];
this.hoveredIdle = index === -1 ? undefined : data.idles[index];
}
onMouseOut() {
this.hoveredValue = undefined;
this.hoveredTs = undefined;
this.hoveredTsEnd = undefined;
this.hoveredIdle = undefined;
}
}
trackRegistry.register(CpuFreqTrack);
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