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1 // Copyright (c) 2011 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 #ifndef BASE_METRICS_NACL_HISTOGRAM_H_ | |
14 #define BASE_METRICS_NACL_HISTOGRAM_H_ | |
15 #pragma once | |
16 | |
17 #include "base/base_api.h" | |
18 | |
19 enum NaClHistogramValue { | |
20 FIRST_TAB_NACL_BASELINE, // First tab created - a baseline for NaCl starts. | |
21 NEW_TAB_NACL_BASELINE, // New tab created -- a baseline for NaCl starts. | |
22 NACL_STARTED, // NaCl process started | |
23 NACL_MAX_HISTOGRAM // DO NOT USE -- used by histogram for max bound. | |
24 }; | |
25 | |
26 // To log histogram data about NaCl.Startups, call this macro with | |
27 // a NaClHistogramValue passed in as |histogram_value| | |
28 BASE_API void UmaNaclHistogramEnumeration(NaClHistogramValue histogram_value); | |
29 | |
30 #endif // BASE_METRICS_NACL_HISTOGRAM_H_ | |
31 | |
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