chrome/browser/chromeos/power/freezer_cgroup_process_manager.h

   1 // Copyright 2014 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 CHROME_BROWSER_CHROMEOS_POWER_FREEZER_CGROUP_PROCESS_MANAGER_H_
   6 #define CHROME_BROWSER_CHROMEOS_POWER_FREEZER_CGROUP_PROCESS_MANAGER_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/files/file_path.h"
  12 #include "base/macros.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/process/process_handle.h"
  16 #include "chrome/browser/chromeos/power/renderer_freezer.h"
  17
  18 namespace base {
  19 class SequencedTaskRunner;
  20 }
  21
  22 namespace chromeos {
  23
  24 // Manages all the processes in the freezer cgroup on Chrome OS.
  25 class FreezerCgroupProcessManager : public RendererFreezer::Delegate {
  26  public:
  27   FreezerCgroupProcessManager();
  28   ~FreezerCgroupProcessManager() override;
  29
  30   // RendererFreezer::Delegate overrides.
  31   void SetShouldFreezeRenderer(base::ProcessHandle handle,
  32                                bool frozen) override;
  33   void FreezeRenderers() override;
  34   void ThawRenderers(ResultCallback callback) override;
  35   void CheckCanFreezeRenderers(ResultCallback callback) override;
  36
  37  private:
  38   scoped_refptr<base::SequencedTaskRunner> file_thread_;
  39
  40   class FileWorker;
  41   scoped_ptr<FileWorker> file_worker_;
  42
  43   DISALLOW_COPY_AND_ASSIGN(FreezerCgroupProcessManager);
  44 };
  45
  46 }  // namespace chromeos
  47
  48 #endif  // CHROME_BROWSER_CHROMEOS_POWER_FREEZER_CGROUP_PROCESS_MANAGER_H_