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92953bfc67
MozReview-Commit-ID: APuclfFyJri --HG-- extra : rebase_source : 599942110a813d954983f961dd9da06045b6a6a5
60 lines
1.7 KiB
C++
60 lines
1.7 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 CombinedStacks_h__
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#define CombinedStacks_h__
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#include <vector>
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#include "ProcessedStack.h"
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class JSObject;
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struct JSContext;
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namespace mozilla {
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namespace Telemetry {
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/**
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* This class is conceptually a list of ProcessedStack objects, but it represents them
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* more efficiently by keeping a single global list of modules.
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*/
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class CombinedStacks {
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public:
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explicit CombinedStacks();
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explicit CombinedStacks(size_t aMaxStacksCount);
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typedef std::vector<Telemetry::ProcessedStack::Frame> Stack;
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const Telemetry::ProcessedStack::Module& GetModule(unsigned aIndex) const;
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size_t GetModuleCount() const;
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const Stack& GetStack(unsigned aIndex) const;
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size_t AddStack(const Telemetry::ProcessedStack& aStack);
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size_t GetStackCount() const;
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size_t SizeOfExcludingThis() const;
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#if defined(MOZ_GECKO_PROFILER)
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/** Clears the contents of vectors and resets the index. */
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void Clear();
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#endif
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private:
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std::vector<Telemetry::ProcessedStack::Module> mModules;
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// A circular buffer to hold the stacks.
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std::vector<Stack> mStacks;
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// The index of the next buffer element to write to in mStacks.
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size_t mNextIndex;
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// The maximum number of stacks to keep in the CombinedStacks object.
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size_t mMaxStacksCount;
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};
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/**
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* Creates a JSON representation of given combined stacks object.
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*/
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JSObject *
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CreateJSStackObject(JSContext *cx, const CombinedStacks &stacks);
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} // namespace Telemetry
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} // namespace mozilla
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#endif // CombinedStacks_h__
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