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/*
* Copyright (C) 2021 The Android Open Source Project
* Android BPF library - public API
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <vector>
#include "MultiStateCounter.h"
namespace android {
namespace battery {
/**
* Wrapper for an array of uint64's.
*/
class Uint64Array {
protected:
size_t mSize;
public:
Uint64Array() : Uint64Array(0) {}
Uint64Array(size_t size) : mSize(size) {}
virtual ~Uint64Array() {}
size_t size() const { return mSize; }
/**
* Returns the wrapped array.
*
* Nullable! Null should be interpreted the same as an array of zeros
*/
virtual const uint64_t *data() const { return nullptr; }
friend std::ostream &operator<<(std::ostream &os, const Uint64Array &v);
// Test API
bool operator==(const Uint64Array &other) const;
};
/**
* Mutable version of Uint64Array.
*/
class Uint64ArrayRW: public Uint64Array {
uint64_t* mData;
public:
Uint64ArrayRW() : Uint64ArrayRW(0) {}
Uint64ArrayRW(size_t size) : Uint64Array(size), mData(nullptr) {}
Uint64ArrayRW(const Uint64Array ©);
// Need an explicit copy constructor. In the initialization context C++ does not understand that
// a Uint64ArrayRW is a Uint64Array.
Uint64ArrayRW(const Uint64ArrayRW ©) : Uint64ArrayRW((const Uint64Array &) copy) {}
// Test API
Uint64ArrayRW(std::initializer_list<uint64_t> init);
~Uint64ArrayRW() override { delete[] mData; }
const uint64_t *data() const override { return mData; }
// NonNull. Will initialize the wrapped array if it is null.
uint64_t *dataRW();
Uint64ArrayRW &operator=(const Uint64Array &t);
};
typedef MultiStateCounter<Uint64ArrayRW, Uint64Array> LongArrayMultiStateCounter;
} // namespace battery
} // namespace android
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