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// Copyright 2017 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_DEDICATED_WORKER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_DEDICATED_WORKER_H_
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/events/event_listener.h"
#include "third_party/blink/renderer/core/dom/events/event_target.h"
#include "third_party/blink/renderer/core/dom/pausable_object.h"
#include "third_party/blink/renderer/core/messaging/message_port.h"
#include "third_party/blink/renderer/core/workers/abstract_worker.h"
#include "third_party/blink/renderer/core/workers/worker_options.h"
#include "third_party/blink/renderer/platform/graphics/begin_frame_provider.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
namespace v8_inspector {
struct V8StackTraceId;
} // namespace v8_inspector
namespace blink {
class DedicatedWorkerMessagingProxy;
class ExceptionState;
class ExecutionContext;
class ScriptState;
class WorkerClassicScriptLoader;
class WorkerClients;
struct GlobalScopeCreationParams;
// Implementation of the Worker interface defined in the WebWorker HTML spec:
// https://html.spec.whatwg.org/multipage/workers.html#worker
//
// Confusingly, the Worker interface is for dedicated workers, so this class is
// called DedicatedWorker. This lives on the main thread.
class CORE_EXPORT DedicatedWorker final
: public AbstractWorker,
public ActiveScriptWrappable<DedicatedWorker> {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(DedicatedWorker);
// Eager finalization is needed to notify the parent object destruction of the
// GC-managed messaging proxy and to initiate worker termination.
EAGERLY_FINALIZE();
public:
static DedicatedWorker* Create(ExecutionContext*,
const String& url,
const WorkerOptions&,
ExceptionState&);
~DedicatedWorker() override;
void postMessage(ScriptState*,
scoped_refptr<SerializedScriptValue> message,
const MessagePortArray&,
ExceptionState&);
static bool CanTransferArrayBuffersAndImageBitmaps() { return true; }
void terminate();
BeginFrameProviderParams CreateBeginFrameProviderParams();
// Implements ContextLifecycleObserver (via AbstractWorker).
void ContextDestroyed(ExecutionContext*) override;
// Implements ScriptWrappable
// (via AbstractWorker -> EventTargetWithInlineData -> EventTarget).
bool HasPendingActivity() const final;
DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
void Trace(blink::Visitor*) override;
private:
DedicatedWorker(ExecutionContext*,
const KURL& script_url,
const WorkerOptions&);
// Starts the worker.
void Start();
std::unique_ptr<GlobalScopeCreationParams> CreateGlobalScopeCreationParams();
WorkerClients* CreateWorkerClients();
// Callbacks for |classic_script_loader_|.
void OnResponse();
void OnFinished(const v8_inspector::V8StackTraceId&);
// Implements EventTarget (via AbstractWorker -> EventTargetWithInlineData).
const AtomicString& InterfaceName() const final;
const KURL script_url_;
const WorkerOptions options_;
const Member<DedicatedWorkerMessagingProxy> context_proxy_;
scoped_refptr<WorkerClassicScriptLoader> classic_script_loader_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_WORKERS_DEDICATED_WORKER_H_
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