Delete athena/

athena/resource_manager/public/resource_manager.h

-// 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 ATHENA_RESOURCE_MANAGER_PUBLIC_RESOURCE_MANAGER_H_
-#define ATHENA_RESOURCE_MANAGER_PUBLIC_RESOURCE_MANAGER_H_
-
-#include "athena/athena_export.h"
-#include "base/basictypes.h"
-
-namespace athena {
-
-// The resource manager is monitoring activity changes, low memory conditions
-// and other events to control the activity state (pre-/un-/re-/loading them)
-// to keep enough memory free that no jank/lag will show when new applications
-// are loaded and / or a navigation between applications takes place.
-class ATHENA_EXPORT ResourceManager {
- public:
-  // The reported memory pressure. Note: The value is intentionally abstracted
-  // since the real amount of free memory is only estimated (due to e.g. zram).
-  // Note: The bigger the index of the pressure level, the more resources are
-  // in use.
-  enum MemoryPressure {
-    MEMORY_PRESSURE_UNKNOWN = 0,   // The memory pressure cannot be determined.
-    MEMORY_PRESSURE_LOW,           // Single call if fill level is below 50%.
-    MEMORY_PRESSURE_MODERATE,      // Polled for fill level of ~50 .. 75%.
-    MEMORY_PRESSURE_HIGH,          // Polled for fill level of ~75% .. 90%.
-    MEMORY_PRESSURE_CRITICAL,      // Polled for fill level of above ~90%.
-  };
-
-  // Creates the instance handling the resources.
-  static void Create();
-  static ResourceManager* Get();
-  static void Shutdown();
-
-  ResourceManager();
-  virtual ~ResourceManager();
-
-  // Unit tests can simulate MemoryPressure changes with this call.
-  // Note: Even though the default unit test ResourceManagerDelegte
-  // implementation ensures that the MemoryPressure event will not go off,
-  // this call will also explicitly stop the MemoryPressureNotifier.
-  virtual void SetMemoryPressureAndStopMonitoring(
-      ResourceManager::MemoryPressure pressure) = 0;
-
-  // Resource management calls require time to show effect (until memory
-  // gets actually released). This function lets override the time limiter
-  // between two calls to allow for more/less aggressive timeouts.
-  // By calling this function, the next call to the Resource manager will be
-  // executed immediately.
-  virtual void SetWaitTimeBetweenResourceManageCalls(int time_in_ms) = 0;
-
-  // Suspend the resource manager temporarily if |pause| is set. This can be
-  // called before e.g. re-arranging the order of activities. Once called with
-  // |pause| == false any queued operations will be performed and the resource
-  // manager will continue its work.
-  virtual void Pause(bool pause) = 0;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ResourceManager);
-};
-
-// Use this scoped object to pause/restart the resource manager.
-class ScopedPauseResourceManager {
- public:
-  ScopedPauseResourceManager() {
-    ResourceManager::Get()->Pause(true);
-  }
-  ~ScopedPauseResourceManager() {
-    ResourceManager::Get()->Pause(false);
-  }
- private:
-  DISALLOW_COPY_AND_ASSIGN(ScopedPauseResourceManager);
-};
-
-}  // namespace athena
-
-#endif  // ATHENA_RESOURCE_MANAGER_PUBLIC_RESOURCE_MANAGER_H_