gpu/perftests/measurements.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 GPU_PERFTESTS_MEASUREMENTS_H_
   6 #define GPU_PERFTESTS_MEASUREMENTS_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/time/time.h"
  12
  13 namespace gfx {
  14 class GPUTimingClient;
  15 class GPUTimer;
  16 }
  17
  18 namespace gpu {
  19
  20 struct Measurement {
  21   Measurement();
  22   Measurement(const Measurement& m);
  23   Measurement(const std::string& name,
  24               const base::TimeDelta wall_time,
  25               const base::TimeDelta cpu_time,
  26               const base::TimeDelta gpu_time);
  27   ~Measurement();
  28
  29   void PrintResult(const std::string& graph) const;
  30   Measurement& Increment(const Measurement& m);
  31   Measurement Divide(int a) const;
  32
  33   std::string name;
  34   base::TimeDelta wall_time;
  35   base::TimeDelta cpu_time;
  36   base::TimeDelta gpu_time;
  37 };
  38
  39 // Class to measure wall, cpu and gpu time deltas.
  40 // The deltas are measured from the time of the object
  41 // creation up to when Record is called.
  42 class MeasurementTimers {
  43  public:
  44   explicit MeasurementTimers(gfx::GPUTimingClient* gpu_timing_client);
  45   void Record();
  46   Measurement GetAsMeasurement(const std::string& name);
  47   ~MeasurementTimers();
  48
  49  private:
  50   base::TimeTicks wall_time_start_;
  51   base::TimeTicks cpu_time_start_;
  52   scoped_ptr<gfx::GPUTimer> gpu_timer_;
  53
  54   base::TimeDelta wall_time_;
  55   base::TimeDelta cpu_time_;
  56 };
  57
  58 }  // namespace gpu
  59
  60 #endif  // GPU_PERFTESTS_MEASUREMENTS_H_