1 /* 2 * Copyright (C) 2018 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 #ifndef THROTTLER_H 18 #define THROTTLER_H 19 20 #include <utils/RefBase.h> 21 22 #include <unistd.h> 23 24 namespace android { 25 namespace os { 26 namespace incidentd { 27 /** 28 * This is a size-based throttler which prevents incidentd to take more data. 29 */ 30 class Throttler : public virtual android::RefBase { 31 public: 32 Throttler(size_t limit, int64_t refractoryPeriodMs); 33 ~Throttler(); 34 35 /** 36 * Asserts this before starting taking report. 37 */ 38 bool shouldThrottle(); 39 40 void addReportSize(size_t reportByteSize); 41 42 void dump(FILE* out); 43 44 private: 45 const size_t mSizeLimit; 46 const int64_t mRefractoryPeriodMs; 47 48 size_t mAccumulatedSize; 49 int64_t mLastRefractoryMs; 50 }; 51 52 } // namespace incidentd 53 } // namespace os 54 } // namespace android 55 56 #endif // THROTTLER_H 57
