chromecast/base/metrics/grouped_histogram.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_GROUPED_HISTOGRAM_H_
   6 #define CHROMECAST_BASE_METRICS_GROUPED_HISTOGRAM_H_
   7
   8 #include <string>
   9
  10 namespace chromecast {
  11 namespace metrics {
  12
  13 // Registers a predefined list of histograms to be collected per-app.  Must be
  14 // called before any histograms of the same name are used or registration will
  15 // fail.
  16 void PreregisterAllGroupedHistograms();
  17
  18 // Sets the current app name to be used for subsequent grouped histogram
  19 // samples (a new metric is generated with the app name as a suffix).
  20 void TagAppStartForGroupedHistograms(const std::string& app_name);
  21
  22 } // namespace metrics
  23 } // namespace chromecast
  24
  25 #endif // CHROMECAST_BASE_METRICS_GROUPED_HISTOGRAM_H_