67 lines
2.1 KiB
C++
Vendored
67 lines
2.1 KiB
C++
Vendored
/*
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* Copyright 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef NATIVEOBOE_FIFOCONTROLLERINDIRECT_H
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#define NATIVEOBOE_FIFOCONTROLLERINDIRECT_H
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#include <atomic>
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#include <stdint.h>
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#include "oboe_oboe_FifoControllerBase_android.h"
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namespace oboe {
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/**
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* A FifoControllerBase with counters external to the class.
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*/
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class FifoControllerIndirect : public FifoControllerBase {
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public:
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FifoControllerIndirect(uint32_t bufferSize,
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std::atomic<uint64_t> *readCounterAddress,
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std::atomic<uint64_t> *writeCounterAddress);
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virtual ~FifoControllerIndirect() = default;
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virtual uint64_t getReadCounter() const override {
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return mReadCounterAddress->load(std::memory_order_acquire);
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}
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virtual void setReadCounter(uint64_t n) override {
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mReadCounterAddress->store(n, std::memory_order_release);
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}
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virtual void incrementReadCounter(uint64_t n) override {
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mReadCounterAddress->fetch_add(n, std::memory_order_acq_rel);
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}
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virtual uint64_t getWriteCounter() const override {
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return mWriteCounterAddress->load(std::memory_order_acquire);
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}
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virtual void setWriteCounter(uint64_t n) override {
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mWriteCounterAddress->store(n, std::memory_order_release);
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}
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virtual void incrementWriteCounter(uint64_t n) override {
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mWriteCounterAddress->fetch_add(n, std::memory_order_acq_rel);
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}
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private:
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std::atomic<uint64_t> *mReadCounterAddress;
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std::atomic<uint64_t> *mWriteCounterAddress;
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};
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} // namespace oboe
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#endif //NATIVEOBOE_FIFOCONTROLLERINDIRECT_H
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