| /* |
| * Copyright 2015 Google Inc. 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_JSON_FILE_OUTPUTTER_H_ |
| #define COBALT_TRACE_EVENT_JSON_FILE_OUTPUTTER_H_ |
| |
| #include "base/file_path.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/ref_counted_memory.h" |
| #include "base/platform_file.h" |
| |
| namespace cobalt { |
| namespace trace_event { |
| |
| // This class is a helper class to provide a callback for |
| // base::debug::TraceLog::Flush() calls so that the JSON produced by TraceLog |
| // can be directed to a file on disc. |
| class JSONFileOutputter { |
| public: |
| explicit JSONFileOutputter(const FilePath& output_path); |
| ~JSONFileOutputter(); |
| |
| void OutputTraceData( |
| const scoped_refptr<base::RefCountedString>& event_string); |
| |
| bool GetError() const { return file_ == base::kInvalidPlatformFileValue; } |
| |
| private: |
| void Write(const char* buffer, size_t length); |
| void Close(); |
| |
| FilePath output_path_; |
| base::PlatformFile file_; |
| |
| int output_trace_event_call_count_; |
| }; |
| |
| } // namespace trace_event |
| } // namespace cobalt |
| |
| #endif // COBALT_TRACE_EVENT_JSON_FILE_OUTPUTTER_H_ |