content/public/browser/worker_service.h

   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_WORKER_SERVICE_H_