TelemetryHistogram.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef TelemetryHistogram_h__

#define TelemetryHistogram_h__

#include "mozilla/TelemetryComms.h"

#include "mozilla/TelemetryHistogramEnums.h"

#include "mozilla/TelemetryProcessEnums.h"

#include "nsXULAppAPI.h"

#include "TelemetryCommon.h"

// This module is internal to Telemetry.  It encapsulates Telemetry's

// histogram accumulation and storage logic.  It should only be used by

// Telemetry.cpp.  These functions should not be used anywhere else.

// For the public interface to Telemetry functionality, see Telemetry.h.

namespace TelemetryHistogram {

void InitializeGlobalState(bool canRecordBase, bool canRecordExtended);

void DeInitializeGlobalState();

#ifdef DEBUG

bool GlobalStateHasBeenInitialized();

#endif

bool CanRecordBase();

void SetCanRecordBase(bool b);

bool CanRecordExtended();

void SetCanRecordExtended(bool b);

void InitHistogramRecordingEnabled();

void Accumulate(mozilla::Telemetry::HistogramID aHistogram, uint32_t aSample);

void Accumulate(mozilla::Telemetry::HistogramID aHistogram,

                const nsTArray<uint32_t>& aSamples);

void Accumulate(mozilla::Telemetry::HistogramID aID, const nsCString& aKey,

                uint32_t aSample);

void Accumulate(mozilla::Telemetry::HistogramID aID, const nsCString& aKey,

                const nsTArray<uint32_t>& aSamples);

/*

 * Accumulate a sample into the named histogram.

 * Returns NS_OK on success.

 * Returns NS_ERROR_NOT_AVAILABLE if recording Telemetry is disabled.

 * Returns NS_ERROR_FAILURE on other errors.

*/

nsresult Accumulate(const char* name, uint32_t sample);

/*

 * Accumulate a sample into the named keyed histogram by key.

 * Returns NS_OK on success.

 * Returns NS_ERROR_NOT_AVAILABLE if recording Telemetry is disabled.

 * Returns NS_ERROR_FAILURE on other errors.

*/

nsresult Accumulate(const char* name, const nsCString& key, uint32_t sample);

void AccumulateCategorical(mozilla::Telemetry::HistogramID aId,

                           const nsCString& aLabel);

void AccumulateCategorical(mozilla::Telemetry::HistogramID aId,

                           const nsTArray<nsCString>& aLabels);

void AccumulateChild(

    mozilla::Telemetry::ProcessID aProcessType,

    const nsTArray<mozilla::Telemetry::HistogramAccumulation>& aAccumulations);

void AccumulateChildKeyed(

    mozilla::Telemetry::ProcessID aProcessType,

    const nsTArray<mozilla::Telemetry::KeyedHistogramAccumulation>&

        aAccumulations);

/**

 * Append the list of registered stores to the given set.

*/

nsresult GetAllStores(mozilla::Telemetry::Common::StringHashSet& set);

nsresult GetCategoricalHistogramLabels(JSContext* aCx,

                                       JS::MutableHandle<JS::Value> aResult);

nsresult GetHistogramById(const nsACString& name, JSContext* cx,

                          JS::MutableHandle<JS::Value> ret);

nsresult GetKeyedHistogramById(const nsACString& name, JSContext* cx,

                               JS::MutableHandle<JS::Value> ret);

const char* GetHistogramName(mozilla::Telemetry::HistogramID id);

nsresult CreateHistogramSnapshots(JSContext* aCx,

                                  JS::MutableHandle<JS::Value> aResult,

                                  const nsACString& aStore,

                                  unsigned int aDataset, bool aClearSubsession,

                                  bool aFilterTest = false);

nsresult GetKeyedHistogramSnapshots(JSContext* aCx,

                                    JS::MutableHandle<JS::Value> aResult,

                                    const nsACString& aStore,

                                    unsigned int aDataset,

                                    bool aClearSubsession,

                                    bool aFilterTest = false);

size_t GetHistogramSizesOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf);

}  // namespace TelemetryHistogram

#endif  // TelemetryHistogram_h__