| // Copyright 2015 The Cobalt Authors. All Rights Reserved. |
| // |
| // 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 COBALT_TRACE_EVENT_SCOPED_EVENT_PARSER_TRACE_H_ |
| #define COBALT_TRACE_EVENT_SCOPED_EVENT_PARSER_TRACE_H_ |
| |
| #include "base/files/file_path.h" |
| #include "base/optional.h" |
| #include "base/time/time.h" |
| |
| namespace cobalt { |
| namespace trace_event { |
| |
| // This class will enable tracing for its lifetime and direct all trace |
| // results through a trace event parser which will then call the passed |
| // in event handling callback with the parsed trace events. |
| class ScopedEventParserTrace { |
| public: |
| explicit ScopedEventParserTrace(); |
| // Optionally, a file path can also be provided in which case JSON output |
| // of the trace will be written to that file. |
| ScopedEventParserTrace(const base::FilePath& log_relative_output_path); |
| ~ScopedEventParserTrace(); |
| |
| private: |
| void CommonInit(); |
| |
| base::Optional<base::FilePath> absolute_output_path_; |
| }; |
| |
| // Returns whether a trace is started and active right now. |
| bool IsTracing(); |
| |
| } // namespace trace_event |
| } // namespace cobalt |
| |
| #endif // COBALT_TRACE_EVENT_SCOPED_EVENT_PARSER_TRACE_H_ |