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 65
