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      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 #define DEBUG false
     17 #include "Log.h"
     18 
     19 #include "Throttler.h"
     20 
     21 #include <utils/SystemClock.h>
     22 
     23 namespace android {
     24 namespace os {
     25 namespace incidentd {
     26 
     27 Throttler::Throttler(size_t limit, int64_t refractoryPeriodMs)
     28     : mSizeLimit(limit),
     29       mRefractoryPeriodMs(refractoryPeriodMs),
     30       mAccumulatedSize(0),
     31       mLastRefractoryMs(android::elapsedRealtime()) {}
     32 
     33 Throttler::~Throttler() {}
     34 
     35 bool Throttler::shouldThrottle() {
     36     int64_t now = android::elapsedRealtime();
     37     if (now > mRefractoryPeriodMs + mLastRefractoryMs) {
     38         mLastRefractoryMs = now;
     39         mAccumulatedSize = 0;
     40     }
     41     return mAccumulatedSize > mSizeLimit;
     42 }
     43 
     44 void Throttler::addReportSize(size_t reportByteSize) {
     45     VLOG("The current request took %d bytes to dropbox", (int)reportByteSize);
     46     mAccumulatedSize += reportByteSize;
     47 }
     48 
     49 void Throttler::dump(FILE* out) {
     50     fprintf(out, "mSizeLimit=%d\n", (int)mSizeLimit);
     51     fprintf(out, "mAccumulatedSize=%d\n", (int)mAccumulatedSize);
     52     fprintf(out, "mRefractoryPeriodMs=%d\n", (int)mRefractoryPeriodMs);
     53     fprintf(out, "mLastRefractoryMs=%d\n", (int)mLastRefractoryMs);
     54 }
     55 
     56 }  // namespace incidentd
     57 }  // namespace os
     58 }  // namespace android