chromecast/base/metrics/cast_histograms.h

   1 // Copyright 2014 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 CHROMECAST_BASE_METRICS_CAST_HISTOGRAMS_H_
   6 #define CHROMECAST_BASE_METRICS_CAST_HISTOGRAMS_H_
   7
   8 #include "base/metrics/histogram.h"
   9
  10 // STATIC_HISTOGRAM_POINTER_BLOCK only calls histogram_factory_get_invocation
  11 // at the first time and uses the cached histogram_pointer for subsequent calls
  12 // through base::subtle::Release_Store() and base::subtle::Acquire_Load().
  13 // If the histogram name changes between subsequent calls, use this non-cached
  14 // version that always calls histogram_factory_get_invocation.
  15 #define STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE( \
  16     constant_histogram_name, \
  17     histogram_add_method_invocation, \
  18     histogram_factory_get_invocation) \
  19   do { \
  20     base::HistogramBase* histogram_pointer = histogram_factory_get_invocation; \
  21     if (DCHECK_IS_ON) \
  22       histogram_pointer->CheckName(constant_histogram_name); \
  23     histogram_pointer->histogram_add_method_invocation; \
  24   } while (0)
  25
  26 #define UMA_HISTOGRAM_CUSTOM_TIMES_NO_CACHE( \
  27     name, sample, min, max, bucket_count) \
  28     STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE(name, AddTime(sample), \
  29         base::Histogram::FactoryTimeGet(name, min, max, bucket_count, \
  30             base::Histogram::kUmaTargetedHistogramFlag))
  31
  32 #define UMA_HISTOGRAM_CUSTOM_COUNTS_NO_CACHE(name, sample, min, max, \
  33                                              bucket_count) \
  34     STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE(name, Add(sample), \
  35         base::Histogram::FactoryGet(name, min, max, bucket_count, \
  36             base::HistogramBase::kUmaTargetedHistogramFlag))
  37
  38 #define UMA_HISTOGRAM_ENUMERATION_NO_CACHE(name, sample, boundary_value) \
  39     STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE(name, Add(sample), \
  40         base::LinearHistogram::FactoryGet(name, 1, boundary_value, \
  41             boundary_value + 1, base::Histogram::kUmaTargetedHistogramFlag))
  42
  43 #define UMA_HISTOGRAM_ENUMERATION_COUNT_NO_CACHE(name, sample, count, \
  44                                                  boundary_value) \
  45     STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE(name, AddCount(sample, count), \
  46         base::LinearHistogram::FactoryGet(name, 1, boundary_value, \
  47             boundary_value + 1, base::HistogramBase::kUmaTargetedHistogramFlag))
  48
  49 #endif  // CHROMECAST_BASE_METRICS_CAST_HISTOGRAMS_H_