1 /* 2 * Copyright (C) 2022 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 #include "ringbuffer.h" 18 19 #include <android-base/logging.h> 20 21 namespace aidl { 22 namespace android { 23 namespace hardware { 24 namespace wifi { 25 Ringbuffer(size_t maxSize)26Ringbuffer::Ringbuffer(size_t maxSize) : size_(0), maxSize_(maxSize) {} 27 append(const std::vector<uint8_t> & input)28enum Ringbuffer::AppendStatus Ringbuffer::append(const std::vector<uint8_t>& input) { 29 if (input.size() == 0) { 30 return AppendStatus::FAIL_IP_BUFFER_ZERO; 31 } 32 if (input.size() > maxSize_) { 33 LOG(INFO) << "Oversized message of " << input.size() << " bytes is dropped"; 34 return AppendStatus::FAIL_IP_BUFFER_EXCEEDED_MAXSIZE; 35 } 36 data_.push_back(input); 37 size_ += input.size() * sizeof(input[0]); 38 while (size_ > maxSize_) { 39 if (data_.front().size() <= 0 || data_.front().size() > maxSize_) { 40 LOG(ERROR) << "First buffer in the ring buffer is Invalid. Size: " 41 << data_.front().size(); 42 return AppendStatus::FAIL_RING_BUFFER_CORRUPTED; 43 } 44 size_ -= data_.front().size() * sizeof(data_.front()[0]); 45 data_.pop_front(); 46 } 47 return AppendStatus::SUCCESS; 48 } 49 getData() const50const std::list<std::vector<uint8_t>>& Ringbuffer::getData() const { 51 return data_; 52 } 53 clear()54void Ringbuffer::clear() { 55 data_.clear(); 56 size_ = 0; 57 } 58 59 } // namespace wifi 60 } // namespace hardware 61 } // namespace android 62 } // namespace aidl 63