chrome/browser/task_management/providers/child_process_task.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 CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_CHILD_PROCESS_TASK_H_
   6 #define CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_CHILD_PROCESS_TASK_H_
   7
   8 #include "chrome/browser/task_management/providers/task.h"
   9
  10 class ProcessResourceUsage;
  11
  12 namespace content {
  13 struct ChildProcessData;
  14 }  // namespace content
  15
  16 namespace task_management {
  17
  18 // Represents several types of the browser's child processes such as
  19 // a plugin or a GPU process, ... etc.
  20 class ChildProcessTask : public Task {
  21  public:
  22   // Creates a child process task given its |data| which is
  23   // received from observing |content::BrowserChildProcessObserver|.
  24   explicit ChildProcessTask(const content::ChildProcessData& data);
  25
  26   ~ChildProcessTask() override;
  27
  28   // task_management::Task:
  29   void Refresh(const base::TimeDelta& update_interval,
  30                int64 refresh_flags) override;
  31   Type GetType() const override;
  32   int GetChildProcessUniqueID() const override;
  33   bool ReportsV8Memory() const;
  34   int64 GetV8MemoryAllocated() const override;
  35   int64 GetV8MemoryUsed() const override;
  36
  37  private:
  38   // The Mojo service wrapper that will provide us with the V8 memory usage of
  39   // the browser child process represented by this object.
  40   scoped_ptr<ProcessResourceUsage> process_resources_sampler_;
  41
  42   // The allocated and used V8 memory (in bytes).
  43   int64 v8_memory_allocated_;
  44   int64 v8_memory_used_;
  45
  46   // The unique ID of the child process. It is not the PID of the process.
  47   // See |content::ChildProcessData::id|.
  48   const int unique_child_process_id_;
  49
  50   // The type of the child process. See |content::ProcessType| and
  51   // |NaClTrustedProcessType|.
  52   const int process_type_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(ChildProcessTask);
  55 };
  56
  57 }  // namespace task_management
  58
  59
  60 #endif  // CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_CHILD_PROCESS_TASK_H_