content/browser/service_worker/service_worker_cache_scheduler.h

   1 // Copyright 2015 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_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CACHE_SCHEDULER_H_
   6 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CACHE_SCHEDULER_H_
   7
   8 #include <list>
   9
  10 #include "base/callback.h"
  11 #include "content/common/content_export.h"
  12
  13 namespace content {
  14
  15 class CONTENT_EXPORT ServiceWorkerCacheScheduler {
  16  public:
  17   ServiceWorkerCacheScheduler();
  18   virtual ~ServiceWorkerCacheScheduler();
  19
  20   // Adds the operation to the tail of the queue and starts it if the scheduler
  21   // is idle.
  22   void ScheduleOperation(const base::Closure& closure);
  23
  24   // Call this after each operation completes. It cleans up the current
  25   // operation and starts the next.
  26   void CompleteOperationAndRunNext();
  27
  28   // Returns true if there are any running or pending operations.
  29   bool ScheduledOperations() const;
  30
  31  private:
  32   void RunOperationIfIdle();
  33
  34   // The list of operations waiting on initialization.
  35   std::list<base::Closure> pending_operations_;
  36   bool operation_running_;
  37
  38   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerCacheScheduler);
  39 };
  40
  41 }  // namespace content
  42
  43 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CACHE_SCHEDULER_H_