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
26namespace art {
27
28class BufferedOutputStream FINAL : public OutputStream {
29 public:
30  explicit BufferedOutputStream(std::unique_ptr<OutputStream> out);
31
32  ~BufferedOutputStream() OVERRIDE;
33
34  bool WriteFully(const void* buffer, size_t byte_count) OVERRIDE;
35
36  off_t Seek(off_t offset, Whence whence) OVERRIDE;
37
38  bool Flush() OVERRIDE;
39
40 private:
41  static const size_t kBufferSize = 8 * KB;
42
43  bool FlushBuffer();
44
45  std::unique_ptr<OutputStream> const out_;
46  uint8_t buffer_[kBufferSize];
47  size_t used_;
48
49  DISALLOW_COPY_AND_ASSIGN(BufferedOutputStream);
50};
51
52}  // namespace art
53
54#endif  // ART_COMPILER_LINKER_BUFFERED_OUTPUT_STREAM_H_
55