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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_TEST_FAKE_PACKET_H_
#define SRC_TRACING_TEST_FAKE_PACKET_H_
#include <stdint.h>
#include <array>
#include <initializer_list>
#include <string>
#include <vector>
#include "perfetto/tracing/core/basic_types.h"
namespace perfetto {
class TraceBuffer;
class FakePacketFragment {
public:
// Generates a packet of given |size| with pseudo random payload. The |size|
// argument includes the size of the varint header.
FakePacketFragment(size_t size, char prefix);
FakePacketFragment(const void* payload, size_t payload_size);
void CopyInto(std::vector<uint8_t>* data) const;
size_t GetSizeHeader() const;
bool operator==(const FakePacketFragment& other) const;
const std::string& payload() const { return payload_; }
private:
std::array<uint8_t, 2> header_{};
size_t header_size_ = 0;
std::string payload_;
};
std::ostream& operator<<(std::ostream&, const FakePacketFragment&);
class FakeChunk {
public:
FakeChunk(TraceBuffer* t, ProducerID p, WriterID w, ChunkID c);
// Appends a packet of exactly |size| bytes (including the varint header
// that states the size of the packet itself. The payload of the packet is
// NOT a valid proto and is just filled with pseudo-random bytes generated
// from |seed|.
FakeChunk& AddPacket(size_t size, char seed, uint8_t packet_flag = 0);
// Appends a packet with the given raw content (including varint header).
FakeChunk& AddPacket(std::initializer_list<uint8_t>);
// Increments the number of packets in the chunk without adding new data.
FakeChunk& IncrementNumPackets();
FakeChunk& ClearBytes(size_t offset, size_t len);
FakeChunk& SetUID(uid_t);
// Extends the size of the FakeChunk to |chunk_size| by 0-filling.
FakeChunk& PadTo(size_t chunk_size);
// Returns the full size of the chunk including the ChunkRecord header.
size_t CopyIntoTraceBuffer(bool chunk_complete = true);
private:
TraceBuffer* trace_buffer_;
ProducerID producer_id;
WriterID writer_id;
ChunkID chunk_id;
uint8_t flags = 0;
uint16_t num_packets = 0;
uid_t uid = kInvalidUid;
std::vector<uint8_t> data;
};
} // namespace perfetto
#endif // SRC_TRACING_TEST_FAKE_PACKET_H_
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