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
|
/*
* Copyright (C) 2019 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 AAPT_TRACEBUFFER_H
#define AAPT_TRACEBUFFER_H
#include <androidfw/StringPiece.h>
#include <string>
#include <string_view>
#include <vector>
namespace aapt {
// Record timestamps for beginning and end of a task and generate systrace json fragments.
// This is an in-process ftrace which has the advantage of being platform independent.
// These methods are NOT thread-safe since aapt2 is not multi-threaded.
// Convenience RAII object to automatically finish an event when object goes out of scope.
class Trace {
public:
Trace(const char* tag);
Trace(std::string tag);
Trace(std::string_view tag, const std::vector<android::StringPiece>& args);
~Trace();
static bool enable(bool value = true);
private:
std::string tag_;
};
// Manual markers.
void BeginTrace(std::string tag);
void EndTrace(std::string tag);
// A main trace is required to flush events to disk. Events are formatted in systrace
// json format.
class FlushTrace {
public:
explicit FlushTrace(std::string_view basepath, std::string_view tag);
explicit FlushTrace(std::string_view basepath, std::string_view tag,
const std::vector<android::StringPiece>& args);
explicit FlushTrace(std::string_view basepath, std::string_view tag,
const std::vector<std::string>& args);
~FlushTrace();
private:
std::string basepath_;
std::string tag_;
};
#define TRACE_CALL() Trace __t(__func__)
#define TRACE_NAME(tag) Trace __t(tag)
#define TRACE_NAME_ARGS(tag, args) Trace __t(tag, args)
#define TRACE_FLUSH(basename, tag) FlushTrace __t(basename, tag)
#define TRACE_FLUSH_ARGS(basename, tag, args) FlushTrace __t(basename, tag, args)
} // namespace aapt
#endif //AAPT_TRACEBUFFER_H
|