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// 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.
// This file defines a service that collects information about the user
// experience in order to help improve future versions of the app.
#ifndef CHROME_FRAME_CRASH_REPORTING_CRASH_METRICS_H_
#define CHROME_FRAME_CRASH_REPORTING_CRASH_METRICS_H_
#include "base/basictypes.h"
#include "base/lazy_instance.h"
#include "base/threading/thread_local.h"
// This class provides functionality to track counters like successful page
// loads in the host browser, total number of crashes, page loads in chrome
// frame.
class CrashMetricsReporter {
public:
enum Metric {
NAVIGATION_COUNT,
CRASH_COUNT,
CHROME_FRAME_NAVIGATION_COUNT,
SESSION_ID,
CHANNEL_ERROR_COUNT,
LAST_METRIC,
};
// Returns the global instance of this class.
static CrashMetricsReporter* GetInstance();
// The following function pair return/set/increment the specified user
// metrics value from the registry. These values are set under the
// following key:-
// HKCU\Software\\Google\\ChromeFrame\\UserMetrics
int GetMetric(Metric metric);
bool SetMetric(Metric metric, int value);
int IncrementMetric(Metric metric);
// Records the crash metrics counters like navigation count, crash count.
void RecordCrashMetrics();
bool active() const {
return active_;
}
void set_active(bool active) {
active_ = active;
}
private:
friend struct base::DefaultLazyInstanceTraits<CrashMetricsReporter>;
CrashMetricsReporter()
: active_(false) {}
virtual ~CrashMetricsReporter() {}
// Indicates whether the crash metrics reporter instance is active.
bool active_;
static wchar_t* g_metric_names[LAST_METRIC];
DISALLOW_COPY_AND_ASSIGN(CrashMetricsReporter);
};
#endif // CHROME_FRAME_CRASH_REPORTING_CRASH_METRICS_H_
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