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LibWeb+WebWorker: Move worker execution into a new WebWorker process

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We now create a WorkerAgent for the parent context, which is currently
only a Window. Note that Workers can have Workers per the spec.

The WorkerAgent spawns a WebWorker process to hold the actual
script execution of the Worker. This is modeled with the
DedicatedWorkerHost object in the WebWorker process.
A start_dedicated_worker IPC method in the WebWorker IPC creates the
WorkerHost object. Future different worker types may use different IPC
messages to create their WorkerHost instance.

This implementation cannot yet postMessage between the parent and the
child processes.

Co-Authored-By: Andreas Kling <kling@serenityos.org>
This commit is contained in:
Andrew Kaster 2023-11-08 11:47:41 -07:00 • committed by Andreas Kling
parent 3dbbb5b263
commit 124c378472
31 changed files with 998 additions and 267 deletions
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53
Userland/Services/WebWorker/ConnectionFromClient.h Normal file
View file

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/*
* Copyright (c) 2023, Andrew Kaster <akaster@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/HashMap.h>
#include <LibIPC/ConnectionFromClient.h>
#include <LibJS/Forward.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Loader/FileRequest.h>
#include <LibWeb/Worker/WebWorkerClientEndpoint.h>
#include <LibWeb/Worker/WebWorkerServerEndpoint.h>
#include <WebWorker/Forward.h>
namespace WebWorker {
class ConnectionFromClient final
: public IPC::ConnectionFromClient<WebWorkerClientEndpoint, WebWorkerServerEndpoint> {
C_OBJECT(ConnectionFromClient);
public:
virtual ~ConnectionFromClient() override;
virtual void die() override;
void request_file(Web::FileRequest);
PageHost& page_host() { return *m_page_host; }
PageHost const& page_host() const { return *m_page_host; }
private:
explicit ConnectionFromClient(NonnullOwnPtr<Core::LocalSocket>);
Web::Page& page();
Web::Page const& page() const;
virtual void start_dedicated_worker(AK::URL const& url, String const&, String const&, String const&, IPC::File const&) override;
virtual void handle_file_return(i32 error, Optional<IPC::File> const& file, i32 request_id) override;
NonnullOwnPtr<PageHost> m_page_host;
// FIXME: Route console messages to the Browser UI using a ConsoleClient
HashMap<int, Web::FileRequest> m_requested_files {};
int last_id { 0 };
RefPtr<DedicatedWorkerHost> m_worker_host;
};
}