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 INCLUDE_PERFETTO_TRACING_TRACE_WRITER_BASE_H_ 18 #define INCLUDE_PERFETTO_TRACING_TRACE_WRITER_BASE_H_ 19 20 #include "perfetto/protozero/message_handle.h" 21 22 namespace perfetto { 23 24 namespace protos { 25 namespace pbzero { 26 class TracePacket; 27 } // namespace pbzero 28 } // namespace protos 29 30 // The bare-minimum subset of the TraceWriter interface that is exposed as a 31 // fully public API. 32 // See comments in /include/perfetto/ext/tracing/core/trace_writer.h. 33 class TraceWriterBase { 34 public: 35 virtual ~TraceWriterBase(); 36 37 virtual protozero::MessageHandle<protos::pbzero::TracePacket> 38 NewTracePacket() = 0; 39 40 virtual void Flush(std::function<void()> callback = {}) = 0; 41 virtual uint64_t written() const = 0; 42 }; 43 44 } // namespace perfetto 45 46 #endif // INCLUDE_PERFETTO_TRACING_TRACE_WRITER_BASE_H_ 47