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 "ProfileData.h"
21 #include "ProfileDataContainer.h"
22 #include "renderthread/TimeLord.h"
23 #include "utils/RingBuffer.h"
24 
25 #include <cutils/compiler.h>
26 #include <ui/DisplayInfo.h>
27 
28 #include <array>
29 #include <memory>
30 
31 namespace android {
32 namespace uirenderer {
33 
34 enum class JankTrackerType {
35     // The default, means there's no description set
36     Generic,
37     // The profile data represents a package
38     Package,
39     // The profile data is for a specific window
40     Window,
41 };
42 
43 // Metadata about the ProfileData being collected
44 struct ProfileDataDescription {
45     JankTrackerType type;
46     std::string name;
47 };
48 
49 // TODO: Replace DrawProfiler with this
50 class JankTracker {
51 public:
52     explicit JankTracker(ProfileDataContainer* globalData, const DisplayInfo& displayInfo);
53 
setDescription(JankTrackerType type,const std::string && name)54     void setDescription(JankTrackerType type, const std::string&& name) {
55         mDescription.type = type;
56         mDescription.name = name;
57     }
58 
startFrame()59     FrameInfo* startFrame() { return &mFrames.next(); }
60     void finishFrame(const FrameInfo& frame);
61 
dumpStats(int fd)62     void dumpStats(int fd) { dumpData(fd, &mDescription, mData.get()); }
63     void dumpFrames(int fd);
64     void reset();
65 
66     // Exposed for FrameInfoVisualizer
67     // TODO: Figure out a better way to handle this
frames()68     RingBuffer<FrameInfo, 120>& frames() { return mFrames; }
69 
70 private:
71     void setFrameInterval(nsecs_t frameIntervalNanos);
72 
73     static void dumpData(int fd, const ProfileDataDescription* description,
74                          const ProfileData* data);
75 
76     std::array<int64_t, NUM_BUCKETS> mThresholds;
77     int64_t mFrameInterval;
78     nsecs_t mSwapDeadline;
79     // The amount of time we will erase from the total duration to account
80     // for SF vsync offsets with HWC2 blocking dequeueBuffers.
81     // (Vsync + mDequeueBlockTolerance) is the point at which we expect
82     // SF to have released the buffer normally, so we will forgive up to that
83     // point in time by comparing to (IssueDrawCommandsStart + DequeueDuration)
84     // This is only used if we are in pipelined mode and are using HWC2,
85     // otherwise it's 0.
86     nsecs_t mDequeueTimeForgiveness = 0;
87     ProfileDataContainer mData;
88     ProfileDataContainer* mGlobalData;
89     ProfileDataDescription mDescription;
90 
91     // Ring buffer large enough for 2 seconds worth of frames
92     RingBuffer<FrameInfo, 120> mFrames;
93 };
94 
95 } /* namespace uirenderer */
96 } /* namespace android */
97 
98 #endif /* JANKTRACKER_H_ */
99