1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* Copyright 2017 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.
*/
#pragma once
#include <layerproto/LayerProtoHeader.h>
#include <utils/Errors.h>
#include <utils/StrongPointer.h>
#include <android-base/thread_annotations.h>
#include <condition_variable>
#include <memory>
#include <mutex>
#include <queue>
#include <thread>
using namespace android::surfaceflinger;
namespace android {
class SurfaceFlinger;
constexpr auto operator""_MB(unsigned long long const num) {
return num * 1024 * 1024;
}
/*
* SurfaceTracing records layer states during surface flinging.
*/
class SurfaceTracing {
public:
explicit SurfaceTracing(SurfaceFlinger& flinger);
void enable();
bool disable();
status_t writeToFile();
bool isEnabled() const;
void notify(const char* where);
void setBufferSize(size_t bufferSizeInByte);
void writeToFileAsync();
void dump(std::string& result) const;
enum : uint32_t {
TRACE_CRITICAL = 1 << 0,
TRACE_INPUT = 1 << 1,
TRACE_EXTRA = 1 << 2,
TRACE_ALL = 0xffffffff
};
void setTraceFlags(uint32_t flags);
private:
static constexpr auto kDefaultBufferCapInByte = 100_MB;
static constexpr auto kDefaultFileName = "/data/misc/wmtrace/layers_trace.pb";
class LayersTraceBuffer { // ring buffer
public:
size_t size() const { return mSizeInBytes; }
size_t used() const { return mUsedInBytes; }
size_t frameCount() const { return mStorage.size(); }
void setSize(size_t newSize) { mSizeInBytes = newSize; }
void reset(size_t newSize);
void emplace(LayersTraceProto&& proto);
void flush(LayersTraceFileProto* fileProto);
private:
size_t mUsedInBytes = 0U;
size_t mSizeInBytes = 0U;
std::queue<LayersTraceProto> mStorage;
};
void mainLoop();
void addFirstEntry();
LayersTraceProto traceWhenNotified();
LayersTraceProto traceLayersLocked(const char* where) REQUIRES(mSfLock);
// Returns true if trace is enabled.
bool addTraceToBuffer(LayersTraceProto& entry);
void writeProtoFileLocked() REQUIRES(mTraceLock);
const SurfaceFlinger& mFlinger;
status_t mLastErr = NO_ERROR;
std::thread mThread;
std::condition_variable mCanStartTrace;
std::mutex& mSfLock;
uint32_t mTraceFlags GUARDED_BY(mSfLock) = TRACE_ALL;
const char* mWhere GUARDED_BY(mSfLock) = "";
mutable std::mutex mTraceLock;
LayersTraceBuffer mBuffer GUARDED_BY(mTraceLock);
size_t mBufferSize GUARDED_BY(mTraceLock) = kDefaultBufferCapInByte;
bool mEnabled GUARDED_BY(mTraceLock) = false;
bool mWriteToFile GUARDED_BY(mTraceLock) = false;
};
} // namespace android
|
