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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_PUBLIC_BROWSER_WORKER_SERVICE_H_
      6 #define CONTENT_PUBLIC_BROWSER_WORKER_SERVICE_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/process/process.h"
     11 #include "content/common/content_export.h"
     12 #include "url/gurl.h"
     13 
     14 namespace content {
     15 
     16 class WorkerServiceObserver;
     17 
     18 // A singleton for managing HTML5 shared web workers. These are run in a
     19 // separate process, since multiple renderer processes can be talking to a
     20 // single shared worker. All the methods below can only be called on the IO
     21 // thread.
     22 class WorkerService {
     23  public:
     24   virtual ~WorkerService() {}
     25 
     26   // Returns the WorkerService singleton.
     27   CONTENT_EXPORT static WorkerService* GetInstance();
     28 
     29   // Terminates the given worker. Returns true if the process was found.
     30   virtual bool TerminateWorker(int process_id, int route_id) = 0;
     31 
     32   struct WorkerInfo {
     33     GURL url;
     34     base::string16 name;
     35     int process_id;
     36     int route_id;
     37     base::ProcessHandle handle;
     38   };
     39 
     40   // Return information about all the currently running workers.
     41   virtual std::vector<WorkerInfo> GetWorkers() = 0;
     42 
     43   virtual void AddObserver(WorkerServiceObserver* observer) = 0;
     44   virtual void RemoveObserver(WorkerServiceObserver* observer) = 0;
     45 };
     46 
     47 }  // namespace content
     48 
     49 #endif  // CONTENT_PUBLIC_BROWSER_PLUGIN_SERVICE_H_
     50