1 /** 2 * Copyright (c) 2023-2024 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 PANDA_MEM_GC_G1_G1_PREDICTIONS_H 17 #define PANDA_MEM_GC_G1_G1_PREDICTIONS_H 18 19 #include "libpandabase/utils/sequence.h" 20 21 namespace ark::mem { 22 class G1Predictor { 23 public: G1Predictor(double confidenceFactor)24 explicit G1Predictor(double confidenceFactor) : confidenceFactor_(confidenceFactor) {} 25 Predict(const ark::Sequence & seq)26 double Predict(const ark::Sequence &seq) const 27 { 28 if (seq.IsEmpty()) { 29 return 0; 30 } 31 return seq.GetMean() + confidenceFactor_ * seq.GetStdDev(); 32 } 33 34 private: 35 double confidenceFactor_; 36 }; 37 } // namespace ark::mem 38 #endif 39