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// Copyright (c) 2011 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.
#include "net/base/connection_type_histograms.h"
#include "base/metrics/histogram.h"
namespace net {
// We're using a histogram as a group of counters. We're only interested in
// the values of the counters. Ignore the shape, average, and standard
// deviation of the histograms because they are meaningless.
//
// We use two groups of counters. In the first group (counter1), each counter
// is a boolean (0 or 1) that indicates whether the user has seen a connection
// of that type during that session. In the second group (counter2), each
// counter is the number of connections of that type the user has seen during
// that session.
//
// Each histogram has an unused bucket at the end to allow seamless future
// expansion.
void UpdateConnectionTypeHistograms(ConnectionType type) {
// TODO(wtc): Bug 74467 Move these stats up to a higher level.
static bool had_connection_type[NUM_OF_CONNECTION_TYPES]; // Default false.
if (type >= 0 && type < NUM_OF_CONNECTION_TYPES) {
if (!had_connection_type[type]) {
had_connection_type[type] = true;
UMA_HISTOGRAM_ENUMERATION("Net.HadConnectionType3",
type, NUM_OF_CONNECTION_TYPES);
}
UMA_HISTOGRAM_ENUMERATION("Net.ConnectionTypeCount3",
type, NUM_OF_CONNECTION_TYPES);
} else {
NOTREACHED(); // Someone's logging an invalid type!
}
}
} // namespace net
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