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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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_SPDY_PINNABLE_BUFFER_PIECE_H_ | 5 #ifndef NET_SPDY_CORE_SPDY_PINNABLE_BUFFER_PIECE_H_ |
6 #define NET_SPDY_CORE_SPDY_PINNABLE_BUFFER_PIECE_H_ | 6 #define NET_SPDY_CORE_SPDY_PINNABLE_BUFFER_PIECE_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
11 | 11 |
12 #include "net/spdy/platform/api/spdy_export.h" | 12 #include "net/spdy/platform/api/spdy_export.h" |
13 #include "net/spdy/platform/api/spdy_string_piece.h" | 13 #include "net/spdy/platform/api/spdy_string_piece.h" |
14 | 14 |
15 namespace net { | 15 namespace net { |
16 | 16 |
17 class SpdyPrefixedBufferReader; | 17 class SpdyPrefixedBufferReader; |
18 | 18 |
19 // Helper class of SpdyPrefixedBufferReader. | 19 // Helper class of SpdyPrefixedBufferReader. |
20 // Represents a piece of consumed buffer which may (or may not) own its | 20 // Represents a piece of consumed buffer which may (or may not) own its |
21 // underlying storage. Users may "pin" the buffer at a later time to ensure | 21 // underlying storage. Users may "pin" the buffer at a later time to ensure |
22 // a SpdyPinnableBufferPiece owns and retains storage of the buffer. | 22 // a SpdyPinnableBufferPiece owns and retains storage of the buffer. |
23 struct SPDY_EXPORT_PRIVATE SpdyPinnableBufferPiece { | 23 struct SPDY_EXPORT_PRIVATE SpdyPinnableBufferPiece { |
24 public: | 24 public: |
25 SpdyPinnableBufferPiece(); | 25 SpdyPinnableBufferPiece(); |
26 ~SpdyPinnableBufferPiece(); | 26 ~SpdyPinnableBufferPiece(); |
27 | 27 |
28 const char * buffer() const { | 28 const char* buffer() const { return buffer_; } |
29 return buffer_; | |
30 } | |
31 | 29 |
32 size_t length() const { | 30 size_t length() const { return length_; } |
33 return length_; | |
34 } | |
35 | 31 |
36 explicit operator SpdyStringPiece() const { | 32 explicit operator SpdyStringPiece() const { |
37 return SpdyStringPiece(buffer_, length_); | 33 return SpdyStringPiece(buffer_, length_); |
38 } | 34 } |
39 | 35 |
40 // Allocates and copies the buffer to internal storage. | 36 // Allocates and copies the buffer to internal storage. |
41 void Pin(); | 37 void Pin(); |
42 | 38 |
43 bool IsPinned() const { return storage_ != nullptr; } | 39 bool IsPinned() const { return storage_ != nullptr; } |
44 | 40 |
45 // Swaps buffers, including internal storage, with |other|. | 41 // Swaps buffers, including internal storage, with |other|. |
46 void Swap(SpdyPinnableBufferPiece* other); | 42 void Swap(SpdyPinnableBufferPiece* other); |
47 | 43 |
48 private: | 44 private: |
49 friend class SpdyPrefixedBufferReader; | 45 friend class SpdyPrefixedBufferReader; |
50 | 46 |
51 const char * buffer_; | 47 const char* buffer_; |
52 size_t length_; | 48 size_t length_; |
53 // Null iff |buffer_| isn't pinned. | 49 // Null iff |buffer_| isn't pinned. |
54 std::unique_ptr<char[]> storage_; | 50 std::unique_ptr<char[]> storage_; |
55 }; | 51 }; |
56 | 52 |
57 } // namespace net | 53 } // namespace net |
58 | 54 |
59 #endif // NET_SPDY_CORE_SPDY_PINNABLE_BUFFER_PIECE_H_ | 55 #endif // NET_SPDY_CORE_SPDY_PINNABLE_BUFFER_PIECE_H_ |
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