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1 // Copyright 2017 The Chromium Authors. All rights reserved. | 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NET_SPDY_CORE_ARRAY_OUTPUT_BUFFER_H_ | 5 #ifndef NET_SPDY_CORE_ARRAY_OUTPUT_BUFFER_H_ |
6 #define NET_SPDY_CORE_ARRAY_OUTPUT_BUFFER_H_ | 6 #define NET_SPDY_CORE_ARRAY_OUTPUT_BUFFER_H_ |
7 | 7 |
8 #include <cstddef> | 8 #include <cstddef> |
9 #include "net/spdy/core/zero_copy_output_buffer.h" | 9 #include "net/spdy/core/zero_copy_output_buffer.h" |
10 | 10 |
11 namespace net { | 11 namespace net { |
12 | 12 |
13 class ArrayOutputBuffer : public ZeroCopyOutputBuffer { | 13 class ArrayOutputBuffer : public ZeroCopyOutputBuffer { |
14 public: | 14 public: |
15 // |buffer| is pointed to the output to write to, and |size| is the capacity | 15 // |buffer| is pointed to the output to write to, and |size| is the capacity |
16 // of the output. | 16 // of the output. |
17 ArrayOutputBuffer(char* buffer, int64_t size) | 17 ArrayOutputBuffer(char* buffer, int64_t size) |
18 : current_(buffer), begin_(buffer), capacity_(size) {} | 18 : current_(buffer), begin_(buffer), capacity_(size) {} |
19 ~ArrayOutputBuffer() override{}; | 19 ~ArrayOutputBuffer() override {} |
20 | 20 |
21 ArrayOutputBuffer(const ArrayOutputBuffer&) = delete; | 21 ArrayOutputBuffer(const ArrayOutputBuffer&) = delete; |
22 ArrayOutputBuffer& operator=(const ArrayOutputBuffer&) = delete; | 22 ArrayOutputBuffer& operator=(const ArrayOutputBuffer&) = delete; |
23 | 23 |
24 void Next(char** data, int* size) override; | 24 void Next(char** data, int* size) override; |
25 void AdvanceWritePtr(int64_t count) override; | 25 void AdvanceWritePtr(int64_t count) override; |
26 uint64_t BytesFree() const override; | 26 uint64_t BytesFree() const override; |
27 | 27 |
28 size_t Size() const { return current_ - begin_; } | 28 size_t Size() const { return current_ - begin_; } |
29 char* Begin() const { return begin_; } | 29 char* Begin() const { return begin_; } |
30 | 30 |
31 // Resets the buffer to its original state. | 31 // Resets the buffer to its original state. |
32 void Reset() { | 32 void Reset() { |
33 capacity_ += Size(); | 33 capacity_ += Size(); |
34 current_ = begin_; | 34 current_ = begin_; |
35 } | 35 } |
36 | 36 |
37 | 37 |
38 private: | 38 private: |
39 char* current_ = nullptr; | 39 char* current_ = nullptr; |
40 char* begin_ = nullptr; | 40 char* begin_ = nullptr; |
41 int64_t capacity_ = 0; | 41 int64_t capacity_ = 0; |
42 }; | 42 }; |
43 | 43 |
44 } // namespace net | 44 } // namespace net |
45 | 45 |
46 #endif // NET_SPDY_CORE_ARRAY_OUTPUT_BUFFER_H_ | 46 #endif // NET_SPDY_CORE_ARRAY_OUTPUT_BUFFER_H_ |
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