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Diffstat (limited to 'base/metrics/nacl_histogram.h')
| -rw-r--r-- | base/metrics/nacl_histogram.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/base/metrics/nacl_histogram.h b/base/metrics/nacl_histogram.h new file mode 100644 index 0000000..479b571 --- /dev/null +++ b/base/metrics/nacl_histogram.h @@ -0,0 +1,29 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// nacl_histogram provides an enum and defines a macro that uses definitions +// from histogram.h. Note that a histogram is an object that aggregates +// statistics, and can summarize them in various forms, including ASCII +// graphical, HTML, and numerically. +// nacl_histogram information is used to compare how many times a native +// client module has been loaded, compared to the number of chrome starts +// and number of new tabs created. + +#ifndef BASE_METRICS_NACL_HISTOGRAM_H_ +#define BASE_METRICS_NACL_HISTOGRAM_H_ +#pragma once + +enum NaClHistogramValue { + FIRST_TAB_NACL_BASELINE, // First tab created - a baseline for NaCl starts. + NEW_TAB_NACL_BASELINE, // New tab created -- a baseline for NaCl starts. + NACL_STARTED, // NaCl process started + NACL_MAX_HISTOGRAM // DO NOT USE -- used by histogram for max bound. +}; + +// To log histogram data about NaCl.Startups, call this macro with +// a NaClHistogramValue passed in as |histogram_value| +void UmaNaclHistogramEnumeration(NaClHistogramValue histogram_value); + +#endif // BASE_METRICS_NACL_HISTOGRAM_H_ + |