@quick-game/cli
Version:
Command line interface for rapid qg development
87 lines • 3.52 kB
JavaScript
// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import * as Common from '../../../../core/common/common.js';
import * as Host from '../../../../core/host/host.js';
import * as SDK from '../../../../core/sdk/sdk.js';
import { Memory } from './LineLevelProfile.js';
let liveHeapProfileInstance;
export class LiveHeapProfile {
running;
sessionId;
loadEventCallback;
setting;
constructor() {
this.running = false;
this.sessionId = 0;
this.loadEventCallback = () => { };
this.setting = Common.Settings.Settings.instance().moduleSetting('memoryLiveHeapProfile');
this.setting.addChangeListener(event => event.data ? this.startProfiling() : this.stopProfiling());
if (this.setting.get()) {
void this.startProfiling();
}
}
static instance(opts = { forceNew: null }) {
const { forceNew } = opts;
if (!liveHeapProfileInstance || forceNew) {
liveHeapProfileInstance = new LiveHeapProfile();
}
return liveHeapProfileInstance;
}
async run() {
return;
}
modelAdded(model) {
void model.startSampling(1e4);
}
modelRemoved(_model) {
// Cannot do much when the model has already been removed.
}
async startProfiling() {
if (this.running) {
return;
}
this.running = true;
const sessionId = this.sessionId;
SDK.TargetManager.TargetManager.instance().observeModels(SDK.HeapProfilerModel.HeapProfilerModel, this);
SDK.TargetManager.TargetManager.instance().addModelListener(SDK.ResourceTreeModel.ResourceTreeModel, SDK.ResourceTreeModel.Events.Load, this.loadEventFired, this);
do {
const models = SDK.TargetManager.TargetManager.instance().models(SDK.HeapProfilerModel.HeapProfilerModel);
const profiles = await Promise.all(models.map(model => model.getSamplingProfile()));
if (sessionId !== this.sessionId) {
break;
}
Memory.instance().reset();
for (let i = 0; i < profiles.length; ++i) {
const profile = profiles[i];
if (!profile) {
continue;
}
Memory.instance().appendHeapProfile(profile, models[i].target());
}
await Promise.race([
new Promise(r => window.setTimeout(r, Host.InspectorFrontendHost.isUnderTest() ? 10 : 5000)),
new Promise(r => {
this.loadEventCallback = r;
}),
]);
} while (sessionId === this.sessionId);
SDK.TargetManager.TargetManager.instance().unobserveModels(SDK.HeapProfilerModel.HeapProfilerModel, this);
SDK.TargetManager.TargetManager.instance().removeModelListener(SDK.ResourceTreeModel.ResourceTreeModel, SDK.ResourceTreeModel.Events.Load, this.loadEventFired, this);
for (const model of SDK.TargetManager.TargetManager.instance().models(SDK.HeapProfilerModel.HeapProfilerModel)) {
void model.stopSampling();
}
Memory.instance().reset();
}
stopProfiling() {
if (!this.running) {
return;
}
this.running = false;
this.sessionId++;
}
loadEventFired() {
this.loadEventCallback();
}
}
//# sourceMappingURL=LiveHeapProfile.js.map