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