| // Copyright 2014 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 CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_ |
| #define CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_ |
| |
| #include <list> |
| #include <memory> |
| #include <set> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/strings/string16.h" |
| #include "base/time/time.h" |
| #include "content/browser/shared_worker/worker_document_set.h" |
| |
| class GURL; |
| |
| namespace IPC { |
| class Message; |
| } |
| |
| namespace content { |
| |
| class MessagePort; |
| class SharedWorkerMessageFilter; |
| class SharedWorkerInstance; |
| |
| // The SharedWorkerHost is the interface that represents the browser side of |
| // the browser <-> worker communication channel. This is owned by |
| // SharedWorkerServiceImpl and destructed when a worker context or worker's |
| // message filter is closed. |
| class SharedWorkerHost { |
| public: |
| SharedWorkerHost(SharedWorkerInstance* instance, |
| SharedWorkerMessageFilter* filter, |
| int worker_route_id); |
| ~SharedWorkerHost(); |
| |
| // Starts the SharedWorker in the renderer process which is associated with |
| // |filter_|. |
| void Start(bool pause_on_start); |
| |
| // Returns true iff the given message from a renderer process was forwarded to |
| // the worker. |
| bool SendConnectToWorker(int worker_route_id, |
| const MessagePort& port, |
| SharedWorkerMessageFilter* filter); |
| |
| // Handles the shutdown of the filter. If the worker has no other client, |
| // sends TerminateWorkerContext message to shut it down. |
| void FilterShutdown(SharedWorkerMessageFilter* filter); |
| |
| // Shuts down any shared workers that are no longer referenced by active |
| // documents. |
| void DocumentDetached(SharedWorkerMessageFilter* filter, |
| unsigned long long document_id); |
| |
| // Removes the references to shared workers from the all documents in the |
| // renderer frame. And shuts down any shared workers that are no longer |
| // referenced by active documents. |
| void RenderFrameDetached(int render_process_id, int render_frame_id); |
| |
| void CountFeature(uint32_t feature); |
| void WorkerContextClosed(); |
| void WorkerContextDestroyed(); |
| void WorkerReadyForInspection(); |
| void WorkerScriptLoaded(); |
| void WorkerScriptLoadFailed(); |
| void WorkerConnected(int connection_request_id); |
| void AllowFileSystem(const GURL& url, |
| std::unique_ptr<IPC::Message> reply_msg); |
| void AllowIndexedDB(const GURL& url, |
| const base::string16& name, |
| bool* result); |
| |
| // Terminates the given worker, i.e. based on a UI action. |
| void TerminateWorker(); |
| |
| void AddFilter(SharedWorkerMessageFilter* filter, int route_id); |
| |
| SharedWorkerInstance* instance() { return instance_.get(); } |
| WorkerDocumentSet* worker_document_set() const { |
| return worker_document_set_.get(); |
| } |
| SharedWorkerMessageFilter* worker_render_filter() const { |
| return worker_render_filter_; |
| } |
| int process_id() const { return worker_process_id_; } |
| int worker_route_id() const { return worker_route_id_; } |
| bool IsAvailable() const; |
| |
| private: |
| // Unique identifier for a worker client. |
| class FilterInfo { |
| public: |
| FilterInfo(SharedWorkerMessageFilter* filter, int route_id) |
| : filter_(filter), route_id_(route_id), connection_request_id_(0) {} |
| SharedWorkerMessageFilter* filter() const { return filter_; } |
| int route_id() const { return route_id_; } |
| int connection_request_id() const { return connection_request_id_; } |
| void set_connection_request_id(int id) { connection_request_id_ = id; } |
| |
| private: |
| SharedWorkerMessageFilter* filter_; |
| const int route_id_; |
| int connection_request_id_; |
| }; |
| |
| using FilterList = std::list<FilterInfo>; |
| |
| // Return a vector of all the render process/render frame IDs. |
| std::vector<std::pair<int, int> > GetRenderFrameIDsForWorker(); |
| |
| void RemoveFilters(SharedWorkerMessageFilter* filter); |
| bool HasFilter(SharedWorkerMessageFilter* filter, int route_id) const; |
| void SetConnectionRequestID(SharedWorkerMessageFilter* filter, |
| int route_id, |
| int connection_request_id); |
| void AllowFileSystemResponse(std::unique_ptr<IPC::Message> reply_msg, |
| bool allowed); |
| |
| // Sends |message| to the SharedWorker. |
| bool Send(IPC::Message* message); |
| |
| std::unique_ptr<SharedWorkerInstance> instance_; |
| scoped_refptr<WorkerDocumentSet> worker_document_set_; |
| FilterList filters_; |
| |
| // A message filter for a renderer process that hosts a worker. This is always |
| // valid because this host is destructed immediately after the filter is |
| // closed (see SharedWorkerServiceImpl::OnSharedWorkerMessageFilterClosing). |
| SharedWorkerMessageFilter* worker_render_filter_; |
| |
| const int worker_process_id_; |
| const int worker_route_id_; |
| int next_connection_request_id_; |
| bool termination_message_sent_ = false; |
| bool closed_ = false; |
| const base::TimeTicks creation_time_; |
| |
| // This is the set of features that this worker has used. The values must be |
| // from blink::UseCounter::Feature enum. |
| std::set<uint32_t> used_features_; |
| |
| base::WeakPtrFactory<SharedWorkerHost> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SharedWorkerHost); |
| }; |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_ |