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/*
* Copyright (C) 2018 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 SRC_TRACING_CORE_TRACE_WRITER_FOR_TESTING_H_
#define SRC_TRACING_CORE_TRACE_WRITER_FOR_TESTING_H_
#include <vector>
#include "perfetto/ext/tracing/core/trace_writer.h"
#include "perfetto/protozero/message_handle.h"
#include "perfetto/protozero/scattered_heap_buffer.h"
#include "protos/perfetto/trace/trace_packet.pb.h"
namespace perfetto {
// A specialization of TraceWriter for testing which writes into memory
// allocated by the ScatteredHeapBuffer.
// See //include/perfetto/tracing/core/trace_writer.h for docs.
class TraceWriterForTesting : public TraceWriter {
public:
TraceWriterForTesting();
~TraceWriterForTesting() override;
// TraceWriter implementation. See documentation in trace_writer.h.
// TracePacketHandle is defined in trace_writer.h
TracePacketHandle NewTracePacket() override;
void Flush(std::function<void()> callback = {}) override;
std::vector<protos::TracePacket> GetAllTracePackets();
protos::TracePacket GetOnlyTracePacket();
WriterID writer_id() const override;
uint64_t written() const override;
private:
TraceWriterForTesting(const TraceWriterForTesting&) = delete;
TraceWriterForTesting& operator=(const TraceWriterForTesting&) = delete;
protozero::ScatteredHeapBuffer delegate_;
protozero::ScatteredStreamWriter stream_;
// The packet returned via NewTracePacket(). Its owned by this class,
// TracePacketHandle has just a pointer to it.
std::unique_ptr<protos::pbzero::TracePacket> cur_packet_;
};
} // namespace perfetto
#endif // SRC_TRACING_CORE_TRACE_WRITER_FOR_TESTING_H_
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