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 OHOS_MEDIA_LIBRARY_TRACER 17 #define OHOS_MEDIA_LIBRARY_TRACER 18 19 #include <string.h> 20 21 #include "hitrace_meter.h" 22 23 class MediaLibraryTracer final { 24 public: 25 MediaLibraryTracer() = default; 26 ~MediaLibraryTracer()27 virtual ~MediaLibraryTracer() 28 { 29 for (int32_t i = 0; i < count_; i++) { 30 FinishTrace(HITRACE_TAG_FILEMANAGEMENT); 31 } 32 33 count_ = 0; 34 } 35 Start(const std::string & label)36 void Start(const std::string &label) 37 { 38 StartTrace(HITRACE_TAG_FILEMANAGEMENT, label); 39 count_++; 40 } 41 Finish()42 void Finish() 43 { 44 FinishTrace(HITRACE_TAG_FILEMANAGEMENT); 45 count_--; 46 } 47 48 private: 49 int32_t count_ = 0; 50 }; 51 52 #endif // OHOS_MEDIA_LIBRARY_TRACER 53