Fabien Sanglard | 2d34e76 | 2019-02-21 15:13:29 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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 | |
| 17 | #ifndef AAPT_TRACEBUFFER_H |
| 18 | #define AAPT_TRACEBUFFER_H |
| 19 | |
| 20 | #include <string> |
| 21 | #include <vector> |
| 22 | |
| 23 | #include <androidfw/StringPiece.h> |
| 24 | |
| 25 | namespace aapt { |
| 26 | |
| 27 | // Record timestamps for beginning and end of a task and generate systrace json fragments. |
| 28 | // This is an in-process ftrace which has the advantage of being platform independent. |
| 29 | // These methods are NOT thread-safe since aapt2 is not multi-threaded. |
| 30 | |
| 31 | // Convenience RIAA object to automatically finish an event when object goes out of scope. |
| 32 | class Trace { |
| 33 | public: |
| 34 | Trace(const std::string& tag); |
| 35 | Trace(const std::string& tag, const std::vector<android::StringPiece>& args); |
| 36 | ~Trace(); |
| 37 | }; |
| 38 | |
| 39 | // Manual markers. |
| 40 | void BeginTrace(const std::string& tag); |
| 41 | void EndTrace(); |
| 42 | |
| 43 | // A master trace is required to flush events to disk. Events are formatted in systrace |
| 44 | // json format. |
| 45 | class FlushTrace { |
| 46 | public: |
| 47 | explicit FlushTrace(const std::string& basepath, const std::string& tag); |
| 48 | explicit FlushTrace(const std::string& basepath, const std::string& tag, |
| 49 | const std::vector<android::StringPiece>& args); |
| 50 | explicit FlushTrace(const std::string& basepath, const std::string& tag, |
| 51 | const std::vector<std::string>& args); |
| 52 | ~FlushTrace(); |
| 53 | private: |
| 54 | std::string basepath_; |
| 55 | }; |
| 56 | |
| 57 | #define TRACE_CALL() Trace __t(__func__) |
| 58 | #define TRACE_NAME(tag) Trace __t(tag) |
| 59 | #define TRACE_NAME_ARGS(tag, args) Trace __t(tag, args) |
| 60 | |
| 61 | #define TRACE_FLUSH(basename, tag) FlushTrace __t(basename, tag) |
| 62 | #define TRACE_FLUSH_ARGS(basename, tag, args) FlushTrace __t(basename, tag, args) |
| 63 | } // namespace aapt |
| 64 | #endif //AAPT_TRACEBUFFER_H |