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 | #include "TraceBuffer.h" |
| 18 | |
| 19 | #include <chrono> |
| 20 | #include <sstream> |
| 21 | #include <unistd.h> |
| 22 | #include <vector> |
| 23 | |
| 24 | #include <inttypes.h> |
| 25 | |
| 26 | #include "android-base/utf8.h" |
| 27 | |
| 28 | #include "util/Files.h" |
| 29 | |
| 30 | namespace aapt { |
| 31 | namespace tracebuffer { |
| 32 | |
| 33 | namespace { |
| 34 | |
| 35 | constexpr char kBegin = 'B'; |
| 36 | constexpr char kEnd = 'E'; |
| 37 | |
| 38 | struct TracePoint { |
| 39 | pid_t tid; |
| 40 | int64_t time; |
| 41 | std::string tag; |
| 42 | char type; |
| 43 | }; |
| 44 | |
| 45 | std::vector<TracePoint> traces; |
| 46 | |
| 47 | int64_t GetTime() noexcept { |
| 48 | auto now = std::chrono::steady_clock::now(); |
| 49 | return std::chrono::duration_cast<std::chrono::microseconds>(now.time_since_epoch()).count(); |
| 50 | } |
| 51 | |
| 52 | } // namespace anonymous |
| 53 | |
| 54 | void AddWithTime(const std::string& tag, char type, int64_t time) noexcept { |
| 55 | TracePoint t = {getpid(), time, tag, type}; |
| 56 | traces.emplace_back(t); |
| 57 | } |
| 58 | |
| 59 | void Add(const std::string& tag, char type) noexcept { |
| 60 | AddWithTime(tag, type, GetTime()); |
| 61 | } |
| 62 | |
| 63 | |
| 64 | |
| 65 | |
| 66 | void Flush(const std::string& basePath) { |
| 67 | TRACE_CALL(); |
| 68 | if (basePath.empty()) { |
| 69 | return; |
| 70 | } |
| 71 | |
| 72 | std::stringstream s; |
| 73 | s << basePath << aapt::file::sDirSep << "report_aapt2_" << getpid() << ".json"; |
| 74 | FILE* f = android::base::utf8::fopen(s.str().c_str(), "a"); |
| 75 | if (f == nullptr) { |
| 76 | return; |
| 77 | } |
| 78 | |
| 79 | for(const TracePoint& trace : traces) { |
| 80 | fprintf(f, "{\"ts\" : \"%" PRIu64 "\", \"ph\" : \"%c\", \"tid\" : \"%d\" , \"pid\" : \"%d\", " |
| 81 | "\"name\" : \"%s\" },\n", trace.time, trace.type, 0, trace.tid, trace.tag.c_str()); |
| 82 | } |
| 83 | fclose(f); |
| 84 | traces.clear(); |
| 85 | } |
| 86 | |
| 87 | } // namespace tracebuffer |
| 88 | |
| 89 | void BeginTrace(const std::string& tag) { |
| 90 | tracebuffer::Add(tag, tracebuffer::kBegin); |
| 91 | } |
| 92 | |
| 93 | void EndTrace() { |
| 94 | tracebuffer::Add("", tracebuffer::kEnd); |
| 95 | } |
| 96 | |
| 97 | Trace::Trace(const std::string& tag) { |
| 98 | tracebuffer::Add(tag, tracebuffer::kBegin); |
| 99 | } |
| 100 | |
| 101 | Trace::Trace(const std::string& tag, const std::vector<android::StringPiece>& args) { |
| 102 | std::stringstream s; |
| 103 | s << tag; |
| 104 | s << " "; |
| 105 | for (auto& arg : args) { |
| 106 | s << arg.to_string(); |
| 107 | s << " "; |
| 108 | } |
| 109 | tracebuffer::Add(s.str(), tracebuffer::kBegin); |
| 110 | } |
| 111 | |
| 112 | Trace::~Trace() { |
| 113 | tracebuffer::Add("", tracebuffer::kEnd); |
| 114 | } |
| 115 | |
| 116 | FlushTrace::FlushTrace(const std::string& basepath, const std::string& tag) |
| 117 | : basepath_(basepath) { |
| 118 | tracebuffer::Add(tag, tracebuffer::kBegin); |
| 119 | } |
| 120 | |
| 121 | FlushTrace::FlushTrace(const std::string& basepath, const std::string& tag, |
| 122 | const std::vector<android::StringPiece>& args) : basepath_(basepath) { |
| 123 | std::stringstream s; |
| 124 | s << tag; |
| 125 | s << " "; |
| 126 | for (auto& arg : args) { |
| 127 | s << arg.to_string(); |
| 128 | s << " "; |
| 129 | } |
| 130 | tracebuffer::Add(s.str(), tracebuffer::kBegin); |
| 131 | } |
| 132 | |
| 133 | FlushTrace::FlushTrace(const std::string& basepath, const std::string& tag, |
| 134 | const std::vector<std::string>& args) : basepath_(basepath){ |
| 135 | std::stringstream s; |
| 136 | s << tag; |
| 137 | s << " "; |
| 138 | for (auto& arg : args) { |
| 139 | s << arg; |
| 140 | s << " "; |
| 141 | } |
| 142 | tracebuffer::Add(s.str(), tracebuffer::kBegin); |
| 143 | } |
| 144 | |
| 145 | FlushTrace::~FlushTrace() { |
| 146 | tracebuffer::Add("", tracebuffer::kEnd); |
| 147 | tracebuffer::Flush(basepath_); |
| 148 | } |
| 149 | |
| 150 | } // namespace aapt |
| 151 | |