nacl_histogram.cc revision 513209b27ff55e2841eac0e4120199c23acce758 
1// Copyright (c) 2010 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// nacl_histogram provides an enum and defines a macro that uses definitions
6// from histogram.h. Note that a histogram is an object that aggregates
7// statistics, and can summarize them in various forms, including ASCII
8// graphical, HTML, and numerically.
9// nacl_histogram information is used to compare how many times a native
10// client module has been loaded, compared to the number of chrome starts
11// and number of new tabs created.
12
13
14#include "base/metrics/histogram.h"
15#include "base/metrics/nacl_histogram.h"
16
17// To log histogram data about NaCl.Startups, call this function with
18// a NaClHistogramValue passed in as |hvalue|
19void UmaNaclHistogramEnumeration(NaClHistogramValue histogram_value) {
20  UMA_HISTOGRAM_ENUMERATION("NaCl.Startups", histogram_value,
21    NACL_MAX_HISTOGRAM);
22}
23
24