Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef NATIVEOBOE_FIFOCONTROLLER_H |
| 18 | #define NATIVEOBOE_FIFOCONTROLLER_H |
| 19 | |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 20 | #include <atomic> |
Phil Burk | 9446ed6 | 2020-07-13 11:26:55 -0700 | [diff] [blame^] | 21 | #include <stdint.h> |
| 22 | |
| 23 | #include "FifoControllerBase.h" |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 24 | |
Don Turner | 3bf32ae | 2017-11-27 13:25:05 +0000 | [diff] [blame] | 25 | namespace oboe { |
| 26 | |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 27 | /** |
| 28 | * A FifoControllerBase with counters contained in the class. |
| 29 | */ |
| 30 | class FifoController : public FifoControllerBase |
| 31 | { |
| 32 | public: |
Phil Burk | 919cd42 | 2019-08-12 17:26:50 -0700 | [diff] [blame] | 33 | FifoController(uint32_t bufferSize); |
Thomas Guilbert | f263601 | 2019-07-10 12:16:08 -0700 | [diff] [blame] | 34 | virtual ~FifoController() = default; |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 35 | |
Thomas Guilbert | f263601 | 2019-07-10 12:16:08 -0700 | [diff] [blame] | 36 | virtual uint64_t getReadCounter() const override { |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 37 | return mReadCounter.load(std::memory_order_acquire); |
| 38 | } |
| 39 | virtual void setReadCounter(uint64_t n) override { |
| 40 | mReadCounter.store(n, std::memory_order_release); |
| 41 | } |
Thomas Guilbert | 5a73fb9 | 2019-07-12 11:54:45 -0700 | [diff] [blame] | 42 | virtual void incrementReadCounter(uint64_t n) override { |
| 43 | mReadCounter.fetch_add(n, std::memory_order_acq_rel); |
| 44 | } |
Thomas Guilbert | f263601 | 2019-07-10 12:16:08 -0700 | [diff] [blame] | 45 | virtual uint64_t getWriteCounter() const override { |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 46 | return mWriteCounter.load(std::memory_order_acquire); |
| 47 | } |
| 48 | virtual void setWriteCounter(uint64_t n) override { |
| 49 | mWriteCounter.store(n, std::memory_order_release); |
| 50 | } |
Thomas Guilbert | 5a73fb9 | 2019-07-12 11:54:45 -0700 | [diff] [blame] | 51 | virtual void incrementWriteCounter(uint64_t n) override { |
| 52 | mWriteCounter.fetch_add(n, std::memory_order_acq_rel); |
| 53 | } |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 54 | |
| 55 | private: |
Phil Burk | 919cd42 | 2019-08-12 17:26:50 -0700 | [diff] [blame] | 56 | std::atomic<uint64_t> mReadCounter{}; |
| 57 | std::atomic<uint64_t> mWriteCounter{}; |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 58 | }; |
| 59 | |
Don Turner | 3bf32ae | 2017-11-27 13:25:05 +0000 | [diff] [blame] | 60 | } // namespace oboe |
Don Turner | ca6f91a | 2017-09-05 14:52:39 +0100 | [diff] [blame] | 61 | |
| 62 | #endif //NATIVEOBOE_FIFOCONTROLLER_H |