1 /* 2 * Copyright (c) 2021-2025 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 DFX_BUFFER_WRITER_H 17 #define DFX_BUFFER_WRITER_H 18 19 #include <cinttypes> 20 #include <condition_variable> 21 #include <memory> 22 #include <mutex> 23 #include <string> 24 #include "dfx_buffer_writer.h" 25 #include "nocopyable.h" 26 #include "smart_fd.h" 27 28 namespace OHOS { 29 namespace HiviewDFX { 30 31 typedef int (*BufferWriteFunc) (int32_t fd, const char *buf, const size_t len); 32 33 class DfxBufferWriter final { 34 public: 35 static DfxBufferWriter &GetInstance(); 36 ~DfxBufferWriter() = default; 37 void Finish(); 38 39 void SetWriteBufFd(SmartFd fd); 40 void SetWriteResFd(SmartFd fd); 41 void SetWriteFunc(BufferWriteFunc func); 42 bool WriteDumpRes(int32_t dumpRes); 43 44 void WriteMsg(const std::string& msg); 45 void WriteFormatMsg(const char *format, ...); 46 47 void AppendBriefDumpInfo(const std::string& info); 48 void PrintBriefDumpInfo(); 49 private: 50 static int DefaultWrite(int32_t fd, const char *buf, const size_t len); 51 52 DfxBufferWriter() = default; 53 DISALLOW_COPY_AND_MOVE(DfxBufferWriter); 54 55 BufferWriteFunc writeFunc_ = nullptr; 56 SmartFd bufFd_; 57 SmartFd resFd_; 58 std::string briefDumpInfo_; 59 }; 60 } // namespace HiviewDFX 61 } // namespace OHOS 62 63 #endif // DFX_PROCESSDUMP_H 64