1 /* 2 * Copyright (C) 2021 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 #pragma once 18 19 #include <audio_utils/SimpleLog.h> 20 #include <map> 21 #include <mutex> 22 #include <sstream> 23 24 namespace android::mediametrics { 25 26 class StatsdLog { 27 public: StatsdLog(size_t lines)28 explicit StatsdLog(size_t lines) : mSimpleLog(lines) {} 29 log(int atom,const std::string & string)30 void log(int atom, const std::string& string) { 31 { 32 std::lock_guard lock(mLock); 33 ++mCountMap[atom]; 34 } 35 mSimpleLog.log("%s", string.c_str()); 36 } 37 38 std::string dumpToString(const char *prefix = "", size_t logLines = 0) const { 39 std::stringstream ss; 40 41 { // first print out the atom counts 42 std::lock_guard lock(mLock); 43 44 size_t col = 0; 45 for (const auto& count : mCountMap) { 46 if (col == 8) { 47 col = 0; 48 ss << "\n" << prefix; 49 } else { 50 ss << " "; 51 } 52 ss << "[ " << count.first << " : " << count.second << " ]"; 53 ++col; 54 } 55 ss << "\n"; 56 } 57 58 // then print out the log lines 59 ss << mSimpleLog.dumpToString(prefix, logLines); 60 return ss.str(); 61 } 62 63 private: 64 SimpleLog mSimpleLog; // internally locked 65 std::map<int /* atom */, size_t /* count */> mCountMap GUARDED_BY(mLock); // sorted 66 mutable std::mutex mLock; 67 }; 68 69 } // namespace android::mediametrics 70