Add process start time and CPU time columns to task manager

chrome/browser/task_manager/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_MANAGER_SAMPLING_TASK_GROUP_H_
 #define CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_GROUP_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 49 matching lines @@
   bool AreBackgroundCalculationsDone() const;
 
   const base::ProcessHandle& process_handle() const { return process_handle_; }
   const base::ProcessId& process_id() const { return process_id_; }
 
   const std::vector<Task*>& tasks() const { return tasks_; }
   size_t num_tasks() const { return tasks().size(); }
   bool empty() const { return tasks().empty(); }
 
   double cpu_usage() const { return cpu_usage_; }
+  uint64_t start_time() const { return start_time_; }
+  uint64_t cpu_time() const { return cpu_time_; }
   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; }
 #if defined(OS_CHROMEOS)
   int64_t swapped_bytes() const { return memory_usage_.swapped_bytes; }
 #endif
   int64_t gpu_memory() const { return gpu_memory_; }
   bool gpu_memory_has_duplicates() const { return gpu_memory_has_duplicates_; }
   int64_t per_process_network_usage() const {
     return per_process_network_usage_;
@@ skipping 20 matching lines @@
  private:
   void RefreshGpuMemory(const gpu::VideoMemoryUsageStats& gpu_memory_stats);
 
   void RefreshWindowsHandles();
 
   // |child_process_unique_id| see Task::GetChildProcessUniqueID().
   void RefreshNaClDebugStubPort(int child_process_unique_id);
 
   void OnCpuRefreshDone(double cpu_usage);
 
+  void OnStartTimeRefreshDone(uint64_t start_time);
+
+  void OnCpuTimeRefreshDone(uint64_t cpu_time);
+
   void OnPhysicalMemoryUsageRefreshDone(int64_t physical_bytes);
   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);
@@ skipping 16 matching lines @@
   // Tasks are not owned by the TaskGroup. They're owned by the TaskProviders.
   std::vector<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_;
+  uint64_t start_time_;
+  uint64_t cpu_time_;

[afakhry, 2016/12/21 18:34:34]

I think the units need to be documented here as well, and mention they're only
calculated on Windows at the moment.

[chengx, 2016/12/21 22:05:54]

Done.

   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_;
   int64_t gdi_peak_handles_;
   int64_t user_current_handles_;
@@ skipping 13 matching lines @@
   // Always keep this the last member of this class so that it's the first to be
   // destroyed.
   base::WeakPtrFactory<TaskGroup> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskGroup);
 };
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_SAMPLING_TASK_GROUP_H_