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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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