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// Copyright 2015 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.
#ifndef COMPONENTS_METRICS_STABILITY_METRICS_HELPER_H_
#define COMPONENTS_METRICS_STABILITY_METRICS_HELPER_H_
#include <string>
#include "base/macros.h"
#include "base/process/kill.h"
class PrefRegistrySimple;
class PrefService;
namespace metrics {
// The values here correspond to values in the Stability message in
// system_profile.proto. It is intentional that we're only tracking a subset,
// but more values can get added to this.
// This must stay 1-1 with the StabilityEventType enum in enums.xml.
enum class StabilityEventType {
kPageLoad = 2,
kRendererCrash = 3,
kExtensionCrash = 5,
kBrowserCrash = 16,
kMaxValue = kBrowserCrash
};
class SystemProfileProto;
// StabilityMetricsHelper is a class that providers functionality common to
// different embedders' stability metrics providers.
class StabilityMetricsHelper {
public:
explicit StabilityMetricsHelper(PrefService* local_state);
~StabilityMetricsHelper();
// Provides stability metrics.
void ProvideStabilityMetrics(SystemProfileProto* system_profile_proto);
// Clears the gathered stability metrics.
void ClearSavedStabilityMetrics();
// Records a utility process launch with name |metrics_name|.
void BrowserUtilityProcessLaunched(const std::string& metrics_name);
// Records a utility process crash with name |metrics_name|.
void BrowserUtilityProcessCrashed(const std::string& metrics_name,
int exit_code);
// Records a browser child process crash.
void BrowserChildProcessCrashed();
// Logs the initiation of a page load.
void LogLoadStarted();
// Records a renderer process crash.
void LogRendererCrash(bool was_extension_process,
base::TerminationStatus status,
int exit_code);
// Records that a new renderer process was successfully launched.
void LogRendererLaunched(bool was_extension_process);
// Records a renderer process hang.
void LogRendererHang();
// Registers local state prefs used by this class.
static void RegisterPrefs(PrefRegistrySimple* registry);
// Increments the RendererCrash pref.
void IncreaseRendererCrashCount();
// Increments the GpuCrash pref.
// Note: This is currently only used on Android. If you want to call this on
// another platform, server-side processing code needs to be updated for that
// platform to use the new data. Server-side currently assumes Android-only.
void IncreaseGpuCrashCount();
// Records a histogram for the input |stability_event_type|.
static void RecordStabilityEvent(StabilityEventType stability_event_type);
private:
// Increments an Integer pref value specified by |path|.
void IncrementPrefValue(const char* path);
// Increments a 64-bit Integer pref value specified by |path|.
void IncrementLongPrefsValue(const char* path);
PrefService* local_state_;
DISALLOW_COPY_AND_ASSIGN(StabilityMetricsHelper);
};
} // namespace metrics
#endif // COMPONENTS_METRICS_STABILITY_METRICS_HELPER_H_
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