Migrate ProcessesEventRouter to the new task manager

chrome/browser/task_management/sampling/task_group.h

 // Copyright 2015 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 CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_H_
 #define CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 11 matching lines @@
 
 namespace task_management {
 
 // Defines a group of tasks tracked by the task manager which belong to the same
 // process. This class lives on the UI thread.
 class TaskGroup {
  public:
   TaskGroup(
       base::ProcessHandle proc_handle,
       base::ProcessId proc_id,
+      const base::Closure& on_background_calculations_done,
       const scoped_refptr<base::SequencedTaskRunner>& blocking_pool_runner);
   ~TaskGroup();
 
   // Adds and removes the given |task| to this group. |task| must be running on
   // the same process represented by this group.
   void AddTask(Task* task);
   void RemoveTask(Task* task);
 
   void Refresh(const content::GPUVideoMemoryUsageStats& gpu_memory_stats,
                base::TimeDelta update_interval,
                int64_t refresh_flags);
 
   // Appends the sorted IDs of the tasks that belong to this group to
   // |out_list|.
   void AppendSortedTaskIds(TaskIdList* out_list) const;
 
   Task* GetTaskById(TaskId task_id) const;
 
+  // This is to be called after the task manager had informed its observers with
+  // OnTasksRefreshedWithBackgroundCalculations() to begin another cycle for
+  // this notification type.
+  void ClearCurrentBackgroundCalculationsFlags() {
+    current_on_bg_done_flags_ = 0;
+  }
+
+  bool AreBackgroundCalculationsDone() const {
+    return expected_on_bg_done_flags_ == current_on_bg_done_flags_;
+  }
+
   const base::ProcessHandle& process_handle() const { return process_handle_; }
   const base::ProcessId& process_id() const { return process_id_; }
 
   size_t num_tasks() const { return tasks_.size(); }
   bool empty() const { return tasks_.empty(); }
 
   double cpu_usage() const { return cpu_usage_; }
   int64_t private_bytes() const { return memory_usage_.private_bytes; }
   int64_t shared_bytes() const { return memory_usage_.shared_bytes; }
   int64_t physical_bytes() const { return memory_usage_.physical_bytes; }
@@ skipping 35 matching lines @@
   void OnMemoryUsageRefreshDone(MemoryUsageStats memory_usage);
 
   void OnIdleWakeupsRefreshDone(int idle_wakeups_per_second);
 
 #if defined(OS_LINUX)
   void OnOpenFdCountRefreshDone(int open_fd_count);
 #endif  // defined(OS_LINUX)
 
   void OnProcessPriorityDone(bool is_backgrounded);
 
+  void OnBackgroundRefreshTypeFinished(int64_t finished_refresh_type);
+
   // The process' handle and ID.
   base::ProcessHandle process_handle_;
   base::ProcessId process_id_;
 
+  // This is a callback into the TaskManagerImpl to inform it that the
+  // background calculations for this TaskGroup has finished.
+  const base::Closure on_background_calculations_done_;
+
   scoped_refptr<TaskGroupSampler> worker_thread_sampler_;
 
   // Maps the Tasks by their IDs.
   // Tasks are not owned by the TaskGroup. They're owned by the TaskProviders.
   std::map<TaskId, Task*> tasks_;
 
+  // Flags will be used to determine when the background calculations has
+  // completed for the enabled refresh types for this TaskGroup.
+  int64_t expected_on_bg_done_flags_;
+  int64_t current_on_bg_done_flags_;
+
   // The per process resources usages.
   double cpu_usage_;
   MemoryUsageStats memory_usage_;
   int64_t gpu_memory_;
   // The network usage in bytes per second as the sum of all network usages of
   // the individual tasks sharing the same process.
   int64_t per_process_network_usage_;
 #if defined(OS_WIN)
   // Windows GDI and USER Handles.
   int64_t gdi_current_handles_;
@@ skipping 16 matching lines @@
   // destroyed.
   base::WeakPtrFactory<TaskGroup> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskGroup);
 };
 
 }  // namespace task_management
 
 
 #endif  // CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_H_