1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef CIRCLE_STREAM_BUFFER_H 17 #define CIRCLE_STREAM_BUFFER_H 18 19 #include "stream_buffer.h" 20 21 namespace OHOS { 22 namespace MMI { 23 class CircleStreamBuffer : public StreamBuffer { 24 static constexpr OHOS::HiviewDFX::HiLogLabel LABEL = { LOG_CORE, MMI_LOG_DOMAIN, "CircleStreamBuffer" }; 25 public: 26 CircleStreamBuffer() = default; 27 virtual ~CircleStreamBuffer() = default; 28 DISALLOW_MOVE(CircleStreamBuffer); 29 30 bool CheckWrite(size_t size); 31 virtual bool Write(const char *buf, size_t size) override; 32 33 protected: 34 void CopyDataToBegin(); 35 }; 36 } // namespace MMI 37 } // namespace OHOS 38 #endif // CIRCLE_STREAM_BUFFER_H