1 /* 2 * Copyright (C) 2017 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 SRC_PROTOZERO_TEST_FAKE_SCATTERED_BUFFER_H_ 18 #define SRC_PROTOZERO_TEST_FAKE_SCATTERED_BUFFER_H_ 19 20 #include <memory> 21 #include <string> 22 #include <vector> 23 24 #include "perfetto/protozero/scattered_stream_writer.h" 25 26 namespace protozero { 27 28 // A simple ScatteredStreamWriter::Delegate implementation which just allocates 29 // chunks of a fixed size. 30 class FakeScatteredBuffer : public ScatteredStreamWriter::Delegate { 31 public: 32 explicit FakeScatteredBuffer(size_t chunk_size); 33 ~FakeScatteredBuffer() override; 34 35 // ScatteredStreamWriter::Delegate implementation. 36 ContiguousMemoryRange GetNewBuffer() override; 37 38 std::string GetChunkAsString(size_t chunk_index); 39 40 void GetBytes(size_t start, size_t length, uint8_t* buf); 41 std::string GetBytesAsString(size_t start, size_t length); 42 43 const std::vector<std::unique_ptr<uint8_t[]>>& chunks() const { 44 return chunks_; 45 } 46 47 private: 48 const size_t chunk_size_; 49 std::vector<std::unique_ptr<uint8_t[]>> chunks_; 50 }; 51 52 } // namespace protozero 53 54 #endif // SRC_PROTOZERO_TEST_FAKE_SCATTERED_BUFFER_H_ 55
