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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef JANKTRACKER_H_
#define JANKTRACKER_H_
#include "FrameInfo.h"
#include "renderthread/TimeLord.h"
#include "utils/RingBuffer.h"
#include <cutils/compiler.h>
#include <ui/DisplayInfo.h>
#include <array>
#include <memory>
namespace android {
namespace uirenderer {
enum JankType {
kMissedVsync = 0,
kHighInputLatency,
kSlowUI,
kSlowSync,
kSlowRT,
// must be last
NUM_BUCKETS,
};
// Try to keep as small as possible, should match ASHMEM_SIZE in
// GraphicsStatsService.java
struct ProfileData {
std::array<uint32_t, NUM_BUCKETS> jankTypeCounts;
// See comments on kBucket* constants for what this holds
std::array<uint32_t, 57> frameCounts;
// Holds a histogram of frame times in 50ms increments from 150ms to 5s
std::array<uint16_t, 97> slowFrameCounts;
uint32_t totalFrameCount;
uint32_t jankFrameCount;
nsecs_t statStartTime;
};
// TODO: Replace DrawProfiler with this
class JankTracker {
public:
explicit JankTracker(const DisplayInfo& displayInfo);
~JankTracker();
void addFrame(const FrameInfo& frame);
void dump(int fd) { dumpData(mData, fd); }
void reset();
void switchStorageToAshmem(int ashmemfd);
uint32_t findPercentile(int p) { return findPercentile(mData, p); }
ANDROID_API static void dumpBuffer(const void* buffer, size_t bufsize, int fd);
private:
void freeData();
void setFrameInterval(nsecs_t frameIntervalNanos);
static uint32_t findPercentile(const ProfileData* data, int p);
static void dumpData(const ProfileData* data, int fd);
std::array<int64_t, NUM_BUCKETS> mThresholds;
int64_t mFrameInterval;
// The amount of time we will erase from the total duration to account
// for SF vsync offsets with HWC2 blocking dequeueBuffers.
// (Vsync + mDequeueBlockTolerance) is the point at which we expect
// SF to have released the buffer normally, so we will forgive up to that
// point in time by comparing to (IssueDrawCommandsStart + DequeueDuration)
// This is only used if we are in pipelined mode and are using HWC2,
// otherwise it's 0.
nsecs_t mDequeueTimeForgiveness = 0;
ProfileData* mData;
bool mIsMapped = false;
};
} /* namespace uirenderer */
} /* namespace android */
#endif /* JANKTRACKER_H_ */
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