1 /* 2 * Copyright (C) 2015 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 #ifndef JANKTRACKER_H_ 17 #define JANKTRACKER_H_ 18 19 #include "FrameInfo.h" 20 #include "renderthread/TimeLord.h" 21 #include "utils/RingBuffer.h" 22 23 #include <cutils/compiler.h> 24 #include <ui/DisplayInfo.h> 25 26 #include <array> 27 #include <memory> 28 29 namespace android { 30 namespace uirenderer { 31 32 enum JankType { 33 kMissedVsync = 0, 34 kHighInputLatency, 35 kSlowUI, 36 kSlowSync, 37 kSlowRT, 38 39 // must be last 40 NUM_BUCKETS, 41 }; 42 43 // Try to keep as small as possible, should match ASHMEM_SIZE in 44 // GraphicsStatsService.java 45 struct ProfileData { 46 std::array<uint32_t, NUM_BUCKETS> jankTypeCounts; 47 // See comments on kBucket* constants for what this holds 48 std::array<uint32_t, 57> frameCounts; 49 // Holds a histogram of frame times in 50ms increments from 150ms to 5s 50 std::array<uint16_t, 97> slowFrameCounts; 51 52 uint32_t totalFrameCount; 53 uint32_t jankFrameCount; 54 nsecs_t statStartTime; 55 }; 56 57 // TODO: Replace DrawProfiler with this 58 class JankTracker { 59 public: 60 JankTracker(const DisplayInfo& displayInfo); 61 ~JankTracker(); 62 63 void addFrame(const FrameInfo& frame); 64 dump(int fd)65 void dump(int fd) { dumpData(mData, fd); } 66 void reset(); 67 68 void switchStorageToAshmem(int ashmemfd); 69 findPercentile(int p)70 uint32_t findPercentile(int p) { return findPercentile(mData, p); } 71 72 ANDROID_API static void dumpBuffer(const void* buffer, size_t bufsize, int fd); 73 74 private: 75 void freeData(); 76 void setFrameInterval(nsecs_t frameIntervalNanos); 77 78 static uint32_t findPercentile(const ProfileData* data, int p); 79 static void dumpData(const ProfileData* data, int fd); 80 81 std::array<int64_t, NUM_BUCKETS> mThresholds; 82 int64_t mFrameInterval; 83 // The amount of time we will erase from the total duration to account 84 // for SF vsync offsets with HWC2 blocking dequeueBuffers. 85 // (Vsync + mDequeueBlockTolerance) is the point at which we expect 86 // SF to have released the buffer normally, so we will forgive up to that 87 // point in time by comparing to (IssueDrawCommandsStart + DequeueDuration) 88 // This is only used if we are in pipelined mode and are using HWC2, 89 // otherwise it's 0. 90 nsecs_t mDequeueTimeForgiveness = 0; 91 ProfileData* mData; 92 bool mIsMapped = false; 93 }; 94 95 } /* namespace uirenderer */ 96 } /* namespace android */ 97 98 #endif /* JANKTRACKER_H_ */ 99