[proof-of-concept] SW thread independent of the main thread

third_party/WebKit/Source/modules/serviceworkers/IsolatedWorkerReportingProxy.h

+// Copyright 2016 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 IsolatedWorkerReportingProxy_h
+#define IsolatedWorkerReportingProxy_h
+
+#include "core/workers/WorkerReportingProxy.h"
+#include "public/platform/modules/serviceworker/service_worker.mojom-blink.h"
+#include "public/web/modules/serviceworker/WebIsolatedWorkerContextClient.h"
+#include "wtf/HashMap.h"
+
+namespace blink {
+class WebIsolatedWorkerContextClient;
+class IsolatedWorkerThread;
+class WebServiceWorkerContextClient;
+class WebServiceWorkerResponse;
+
+class IsolatedWorkerReportingProxy : public WorkerReportingProxy {
+public:
+    static std::unique_ptr<IsolatedWorkerReportingProxy> create(std::unique_ptr<WebIsolatedWorkerContextClient> workerContextClient);
+    ~IsolatedWorkerReportingProxy();
+    void setVersionID(int64_t versionID);
+    void setThread(IsolatedWorkerThread* thread);
+
+    void reportException(const String& errorMessage, std::unique_ptr<SourceLocation>, int exceptionId) override;
+    void reportConsoleMessage(MessageSource, MessageLevel, const String& message, SourceLocation*) override;
+    void postMessageToPageInspector(const String&) override;
+
+    // Invoked when the worker script is evaluated. |success| is true if the
+    // evaluation completed with no uncaught exception.
+    void didEvaluateWorkerScript(bool success) override;
+    // Invoked when the thread creates a worker script context.
+    void didInitializeWorkerContext() override;
+
+    // Invoked when the new WorkerGlobalScope is started.
+    void workerGlobalScopeStarted(WorkerOrWorkletGlobalScope* workerGlobalScope) override;
+    // Invoked when close() is invoked on the worker context.
+    void workerGlobalScopeClosed() override;
+
+    // Invoked when the thread is stopped and WorkerGlobalScope is being
+    // destructed. (This is be the last method that is called on this
+    // interface)
+    void workerThreadTerminated() override;
+
+    // Invoked when the thread is about to be stopped and WorkerGlobalScope
+    // is to be destructed. (When this is called it is guaranteed that
+    // WorkerGlobalScope is still alive)
+    void willDestroyWorkerGlobalScope() override;
+
+    void initializeOnWorkerThread() override;
+
+    std::unique_ptr<String> takeAlternativeCode(const KURL& url) override;
+
+    std::unique_ptr<WTF::Vector<char>> takeAlternativeCachedMetadata(const KURL& url);
+
+private:
+    class IsolatedWorkerClientImpl;
+    class IsolatedServiceWorkerContextClient;
+
+    IsolatedWorkerReportingProxy(std::unique_ptr<WebIsolatedWorkerContextClient> workerContextClient);
+    void sendWorkerStarted();
+    void OnFetchEvent(int32_t responseID, int32_t eventFinishID, const String& url, bool is_navigate, const mojom::blink::IsolatedWorkerClient::OnFetchEventCallback& callback);
+    void respondToFetchEvent(int responseID);
+    void respondToFetchEvent(int responseID, const WebServiceWorkerResponse& response);
+
+    std::unique_ptr<WebIsolatedWorkerContextClient> m_workerContextClient;
+    std::unique_ptr<IsolatedWorkerClientImpl> m_isolatedWorkerClient;
+    mojom::blink::IsolatedWorkerHostServicePtr m_isolated_worker_host_service;
+    std::unique_ptr<std::vector<std::unique_ptr<WebIsolatedWorkerContextClient::WebScriptData>>> m_scriptList;
+    std::unique_ptr<WebServiceWorkerContextClient> m_seriveWorkerContextClient;
+    WTF::HashMap<int32_t, mojom::blink::IsolatedWorkerClient::OnFetchEventCallback> m_onFetchCallbacks;
+    IsolatedWorkerThread* m_thread = nullptr;
+    int64_t m_versionID = 0;
+    WeakPtrFactory<IsolatedWorkerReportingProxy> m_weakFactory;
+};
+
+} // namespace blink
+
+#endif // IsolatedWorkerReportingProxy_h