1 /* 2 * Copyright (C) 2016 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 <utils/Mutex.h> 20 #include <utils/Log.h> 21 #include <utils/RefBase.h> 22 23 #include <ui/FatVector.h> 24 25 #include "FrameInfo.h" 26 #include "FrameMetricsObserver.h" 27 28 #include <string.h> 29 #include <mutex> 30 31 namespace android { 32 namespace uirenderer { 33 34 class FrameMetricsReporter { 35 public: FrameMetricsReporter()36 FrameMetricsReporter() {} 37 addObserver(FrameMetricsObserver * observer)38 void addObserver(FrameMetricsObserver* observer) { 39 std::lock_guard lock(mObserversLock); 40 mObservers.push_back(observer); 41 } 42 removeObserver(FrameMetricsObserver * observer)43 bool removeObserver(FrameMetricsObserver* observer) { 44 std::lock_guard lock(mObserversLock); 45 for (size_t i = 0; i < mObservers.size(); i++) { 46 if (mObservers[i].get() == observer) { 47 mObservers.erase(mObservers.begin() + i); 48 return true; 49 } 50 } 51 return false; 52 } 53 hasObservers()54 bool hasObservers() { 55 std::lock_guard lock(mObserversLock); 56 return mObservers.size() > 0; 57 } 58 59 /** 60 * Notify observers about the metrics contained in 'stats'. 61 * If an observer is waiting for present time, notify when 'stats' has present time. 62 * 63 * If an observer does not want present time, only notify when 'hasPresentTime' is false. 64 * Never notify both types of observers from the same callback, because the callback with 65 * 'hasPresentTime' is sent at a different time than the one without. 66 */ reportFrameMetrics(const int64_t * stats,bool hasPresentTime)67 void reportFrameMetrics(const int64_t* stats, bool hasPresentTime) { 68 FatVector<sp<FrameMetricsObserver>, 10> copy; 69 { 70 std::lock_guard lock(mObserversLock); 71 copy.reserve(mObservers.size()); 72 for (size_t i = 0; i < mObservers.size(); i++) { 73 const bool wantsPresentTime = mObservers[i]->waitForPresentTime(); 74 if (hasPresentTime == wantsPresentTime) { 75 copy.push_back(mObservers[i]); 76 } 77 } 78 } 79 for (size_t i = 0; i < copy.size(); i++) { 80 copy[i]->notify(stats); 81 } 82 } 83 84 private: 85 FatVector<sp<FrameMetricsObserver>, 10> mObservers GUARDED_BY(mObserversLock); 86 std::mutex mObserversLock; 87 }; 88 89 } // namespace uirenderer 90 } // namespace android 91