components/scheduling_metrics/thread_metrics.h

   1 // Copyright 2018 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 COMPONENTS_SCHEDULING_METRICS_THREAD_METRICS_H_
   6 #define COMPONENTS_SCHEDULING_METRICS_THREAD_METRICS_H_
   7
   8 #include "base/component_export.h"
   9 #include "base/optional.h"
  10 #include "base/task/sequence_manager/task_queue.h"
  11 #include "base/time/time.h"
  12 #include "components/scheduling_metrics/task_duration_metric_reporter.h"
  13 #include "components/scheduling_metrics/thread_type.h"
  14 #include "components/scheduling_metrics/total_duration_metric_reporter.h"
  15
  16 namespace scheduling_metrics {
  17
  18 // Helper class to take care of task metrics shared between different threads
  19 // in Chrome, including but not limited to browser UI and IO threads, renderer
  20 // main thread and blink worker threads.
  21 //
  22 class COMPONENT_EXPORT(SCHEDULING_METRICS) ThreadMetrics {
  23  public:
  24   ThreadMetrics(ThreadType thread_type, bool has_cpu_timing_for_each_task);
  25   ~ThreadMetrics();
  26
  27   bool ShouldDiscardTask(
  28       base::sequence_manager::TaskQueue* queue,
  29       const base::sequence_manager::Task& task,
  30       const base::sequence_manager::TaskQueue::TaskTiming& task_timing);
  31
  32   // Record task metrics which are shared between threads.
  33   void RecordTaskMetrics(
  34       base::sequence_manager::TaskQueue* queue,
  35       const base::sequence_manager::Task& task,
  36       const base::sequence_manager::TaskQueue::TaskTiming& task_timing);
  37
  38  protected:
  39   const ThreadType thread_type_;
  40   const bool has_cpu_timing_for_each_task_;
  41
  42  private:
  43   base::ThreadTicks last_known_time_;
  44
  45   TaskDurationMetricReporter<ThreadType> thread_task_duration_reporter_;
  46   TaskDurationMetricReporter<ThreadType> thread_task_cpu_duration_reporter_;
  47   TaskDurationMetricReporter<ThreadType> tracked_cpu_duration_reporter_;
  48   TaskDurationMetricReporter<ThreadType> non_tracked_cpu_duration_reporter_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(ThreadMetrics);
  51 };
  52
  53 }  // namespace scheduling_metrics
  54
  55 #endif  // COMPONENTS_SCHEDULING_METRICS_THREAD_METRICS_H_