chrome-devtools-frontend
Version:
Chrome DevTools UI
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text/typescript
// Copyright 2022 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 {data as metaHandlerData} from './MetaHandler.js';
import {type TraceEventHandlerName} from './types.js';
import * as Helpers from '../helpers/helpers.js';
import * as Types from '../types/types.js';
// Each thread contains events. Events indicate the thread and process IDs, which are
// used to store the event in the correct process thread entry below.
const eventsInProcessThread =
new Map<Types.TraceEvents.ProcessID, Map<Types.TraceEvents.ThreadID, Types.TraceEvents.TraceEventSnapshot[]>>();
let snapshots: Types.TraceEvents.TraceEventSnapshot[] = [];
export function reset(): void {
eventsInProcessThread.clear();
snapshots.length = 0;
}
export function handleEvent(event: Types.TraceEvents.TraceEventData): void {
if (event.ph !== Types.TraceEvents.Phase.OBJECT_SNAPSHOT || event.name !== 'Screenshot') {
return;
}
Helpers.Trace.addEventToProcessThread(event, eventsInProcessThread);
}
export async function finalize(): Promise<void> {
const {browserProcessId, browserThreadId} = metaHandlerData();
const browserThreads = eventsInProcessThread.get(browserProcessId);
if (browserThreads) {
snapshots = browserThreads.get(browserThreadId) || [];
}
}
export function data(): Types.TraceEvents.TraceEventSnapshot[] {
return [...snapshots];
}
export function deps(): TraceEventHandlerName[] {
return ['Meta'];
}