Reporting top cpu and memory consumers via rappor on chromeos

chrome/browser/task_management/sampling/task_group_sampler.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_SAMPLER_H_
 #define CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_SAMPLER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
+#include "base/process/process.h"
 #include "base/process/process_handle.h"
 #include "base/process/process_metrics.h"
 #include "base/sequence_checker.h"
 #include "base/sequenced_task_runner.h"
 
 namespace task_management {
 
 // Wraps the memory usage stats values together so that it can be sent between
 // the UI and the worker threads.
 struct MemoryUsageStats {
@@ skipping 12 matching lines @@
 // resources on the worker thread. Objects of this class are created by the
 // TaskGroups on the UI thread, however it will be used mainly on a blocking
 // pool thread.
 class TaskGroupSampler : public base::RefCountedThreadSafe<TaskGroupSampler> {
  public:
   // The below are the types of the callbacks to the UI thread upon their
   // corresponding refresh are done on the worker thread.
   using OnCpuRefreshCallback = base::Callback<void(double)>;
   using OnMemoryRefreshCallback = base::Callback<void(MemoryUsageStats)>;
   using OnIdleWakeupsCallback = base::Callback<void(int)>;
+  using OnProcessPriorityCallback = base::Callback<void(bool)>;
 
   TaskGroupSampler(
-      base::ProcessHandle proc_handle,
+      base::Process process,
       const scoped_refptr<base::SequencedTaskRunner>& blocking_pool_runner,
       const OnCpuRefreshCallback& on_cpu_refresh,
       const OnMemoryRefreshCallback& on_memory_refresh,
-      const OnIdleWakeupsCallback& on_idle_wakeups);
+      const OnIdleWakeupsCallback& on_idle_wakeups,
+      const OnProcessPriorityCallback& on_process_priority);
 
   // Refreshes the expensive process' stats (CPU usage, memory usage, and idle
   // wakeups per second) on the worker thread.
   void Refresh(int64 refresh_flags);
 
  private:
   friend class base::RefCountedThreadSafe<TaskGroupSampler>;
   ~TaskGroupSampler();
 
   // The refresh calls that will be done on the worker thread.
   double RefreshCpuUsage();
   MemoryUsageStats RefreshMemoryUsage();
   int RefreshIdleWakeupsPerSecond();
+  bool RefreshProcessPriority();
+
+  // The process that holds the handle that we own so that we can use it for
+  // creating the ProcessMetrics.
+  base::Process process_;
 
   scoped_ptr<base::ProcessMetrics> process_metrics_;
 
   // The specific blocking pool SequencedTaskRunner that will be used to post
   // the refresh tasks onto serially.
   scoped_refptr<base::SequencedTaskRunner> blocking_pool_runner_;
 
   // The UI-thread callbacks in TaskGroup to be called when their corresponding
   // refreshes on the worker thread are done.
   const OnCpuRefreshCallback on_cpu_refresh_callback_;
   const OnMemoryRefreshCallback on_memory_refresh_callback_;
   const OnIdleWakeupsCallback on_idle_wakeups_callback_;
+  const OnProcessPriorityCallback on_process_priority_callback_;
 
   // To assert we're running on the correct thread.
   base::SequenceChecker worker_pool_sequenced_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskGroupSampler);
 };
 
 }  // namespace task_management
 
 
 #endif  // CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_SAMPLER_H_