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, histogram_add_method_invocation,                  \
  17     histogram_factory_get_invocation)                                          \
  18   do {                                                                         \
  19     base::HistogramBase* histogram_pointer = histogram_factory_get_invocation; \
  20     if (DCHECK_IS_ON())                                                        \
  21       histogram_pointer->CheckName(constant_histogram_name);                   \
  22     histogram_pointer->histogram_add_method_invocation;                        \
  23   } while (0)
  24
  25 #define UMA_HISTOGRAM_CUSTOM_TIMES_NO_CACHE( \
  26     name, sample, min, max, bucket_count) \
  27     STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE(name, AddTime(sample), \
  28         base::Histogram::FactoryTimeGet(name, min, max, bucket_count, \
  29             base::Histogram::kUmaTargetedHistogramFlag))
  30
  31 #define UMA_HISTOGRAM_CUSTOM_COUNTS_NO_CACHE(name, sample, min, max, \
  32                                              bucket_count) \
  33     STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE(name, Add(sample), \
  34         base::Histogram::FactoryGet(name, min, max, bucket_count, \
  35             base::HistogramBase::kUmaTargetedHistogramFlag))
  36
  37 #define UMA_HISTOGRAM_ENUMERATION_NO_CACHE(name, sample, boundary_value) \
  38     STATIC_HISTOGRAM_POINTER_BLOCK_NO_CACHE(name, Add(sample), \
  39         base::LinearHistogram::FactoryGet(name, 1, boundary_value, \
  40             boundary_value + 1, base::Histogram::kUmaTargetedHistogramFlag))
  41
  42 #endif  // CHROMECAST_BASE_METRICS_CAST_HISTOGRAMS_H_