1ad2c3202b
It is possible in extreme cases that the Telemetry IPC Accumulator might be starved long enough that it cannot drain its stored accumulations for a while. Once we hit 5x the high water mark, start discarding data. Count each piece and type of discarded data and report it via a custom IPC message. MozReview-Commit-ID: JayRpa5QPec
89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef TelemetryIPC_h__
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#define TelemetryIPC_h__
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#include "nsTArray.h"
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#include "nsXULAppAPI.h"
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#include "mozilla/TelemetryProcessEnums.h"
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// This module provides the interface to accumulate Telemetry from child processes.
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// Top-level actors for different child processes types (ContentParent, GPUChild)
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// will call this for messages from their respective processes.
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namespace mozilla {
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namespace Telemetry {
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struct Accumulation;
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struct KeyedAccumulation;
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struct ScalarAction;
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struct KeyedScalarAction;
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struct ChildEventData;
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struct DiscardedData;
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}
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namespace TelemetryIPC {
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/**
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* Accumulate child process data into histograms for the given process type.
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*
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* @param aProcessType - the process type to accumulate the histograms for
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* @param aAccumulations - accumulation actions to perform
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*/
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void AccumulateChildHistograms(Telemetry::ProcessID aProcessType,
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const nsTArray<Telemetry::Accumulation>& aAccumulations);
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/**
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* Accumulate child process data into keyed histograms for the given process type.
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*
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* @param aProcessType - the process type to accumulate the keyed histograms for
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* @param aAccumulations - accumulation actions to perform
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*/
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void AccumulateChildKeyedHistograms(Telemetry::ProcessID aProcessType,
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const nsTArray<Telemetry::KeyedAccumulation>& aAccumulations);
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/**
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* Update scalars for the given process type with the data coming from child process.
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*
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* @param aProcessType - the process type to process the scalar actions for
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* @param aScalarActions - actions to update the scalar data
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*/
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void UpdateChildScalars(Telemetry::ProcessID aProcessType,
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const nsTArray<Telemetry::ScalarAction>& aScalarActions);
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/**
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* Update keyed scalars for the given process type with the data coming from child process.
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*
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* @param aProcessType - the process type to process the keyed scalar actions for
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* @param aScalarActions - actions to update the keyed scalar data
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*/
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void UpdateChildKeyedScalars(Telemetry::ProcessID aProcessType,
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const nsTArray<Telemetry::KeyedScalarAction>& aScalarActions);
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/**
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* Record events for the given process type with the data coming from child process.
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*
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* @param aProcessType - the process type to record the events for
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* @param aEvents - events to record
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*/
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void RecordChildEvents(Telemetry::ProcessID aProcessType,
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const nsTArray<Telemetry::ChildEventData>& aEvents);
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/**
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* Record the counts of data the child process had to discard
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*
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* @param aProcessType - the process reporting the discarded data
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* @param aDiscardedData - stats about the discarded data
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*/
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void RecordDiscardedData(Telemetry::ProcessID aProcessType,
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const Telemetry::DiscardedData& aDiscardedData);
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}
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}
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#endif // TelemetryIPC_h__
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