| /* |
| * Copyright (C) 2016 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 ART_LIBARTBASE_BASE_SYSTRACE_H_ |
| #define ART_LIBARTBASE_BASE_SYSTRACE_H_ |
| |
| #define ATRACE_TAG ATRACE_TAG_DALVIK |
| #include <cutils/trace.h> |
| |
| #include <sstream> |
| #include <string> |
| |
| #include "android-base/stringprintf.h" |
| #include "macros.h" |
| |
| namespace art { |
| |
| class ScopedTrace { |
| public: |
| explicit ScopedTrace(const char* name) { |
| ATRACE_BEGIN(name); |
| } |
| template <typename Fn> |
| explicit ScopedTrace(Fn fn) { |
| if (ATRACE_ENABLED()) { |
| ATRACE_BEGIN(fn().c_str()); |
| } |
| } |
| |
| explicit ScopedTrace(const std::string& name) : ScopedTrace(name.c_str()) {} |
| |
| ~ScopedTrace() { |
| ATRACE_END(); |
| } |
| }; |
| |
| // Helper for the SCOPED_TRACE macro. Do not use directly. |
| class ScopedTraceNoStart { |
| public: |
| ScopedTraceNoStart() { |
| } |
| |
| ~ScopedTraceNoStart() { |
| ATRACE_END(); |
| } |
| |
| // Message helper for the macro. Do not use directly. |
| class ScopedTraceMessageHelper { |
| public: |
| ScopedTraceMessageHelper() { |
| } |
| ~ScopedTraceMessageHelper() { |
| ATRACE_BEGIN(buffer_.str().c_str()); |
| } |
| |
| std::ostream& stream() { |
| return buffer_; |
| } |
| |
| private: |
| std::ostringstream buffer_; |
| }; |
| }; |
| |
| #define SCOPED_TRACE \ |
| ::art::ScopedTraceNoStart APPEND_TOKENS_AFTER_EVAL(trace, __LINE__) ; \ |
| (ATRACE_ENABLED()) && ::art::ScopedTraceNoStart::ScopedTraceMessageHelper().stream() |
| |
| } // namespace art |
| |
| #endif // ART_LIBARTBASE_BASE_SYSTRACE_H_ |