1 /* 2 * Copyright (C) 2013 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 ART_COMPILER_LINKER_BUFFERED_OUTPUT_STREAM_H_ 18 #define ART_COMPILER_LINKER_BUFFERED_OUTPUT_STREAM_H_ 19 20 #include <memory> 21 22 #include "output_stream.h" 23 24 #include "globals.h" 25 26 namespace art { 27 namespace linker { 28 29 class BufferedOutputStream FINAL : public OutputStream { 30 public: 31 explicit BufferedOutputStream(std::unique_ptr<OutputStream> out); 32 33 ~BufferedOutputStream() OVERRIDE; 34 35 bool WriteFully(const void* buffer, size_t byte_count) OVERRIDE; 36 37 off_t Seek(off_t offset, Whence whence) OVERRIDE; 38 39 bool Flush() OVERRIDE; 40 41 private: 42 static const size_t kBufferSize = 8 * KB; 43 44 bool FlushBuffer(); 45 46 std::unique_ptr<OutputStream> const out_; 47 uint8_t buffer_[kBufferSize]; 48 size_t used_; 49 50 DISALLOW_COPY_AND_ASSIGN(BufferedOutputStream); 51 }; 52 53 } // namespace linker 54 } // namespace art 55 56 #endif // ART_COMPILER_LINKER_BUFFERED_OUTPUT_STREAM_H_ 57