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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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_TOOLS_BALSA_SIMPLE_BUFFER_H__ | 5 #ifndef NET_TOOLS_BALSA_SIMPLE_BUFFER_H__ |
| 6 #define NET_TOOLS_BALSA_SIMPLE_BUFFER_H__ | 6 #define NET_TOOLS_BALSA_SIMPLE_BUFFER_H__ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 | 9 |
| 10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
| 11 #include "net/tools/balsa/buffer_interface.h" | 11 #include "net/tools/balsa/buffer_interface.h" |
| 12 | 12 |
| 13 namespace net { | 13 namespace net { |
| 14 | 14 |
| 15 class SimpleBuffer : public BufferInterface { | 15 class SimpleBuffer : public BufferInterface { |
| 16 public: | 16 public: |
| 17 SimpleBuffer(); | 17 SimpleBuffer(); |
| 18 explicit SimpleBuffer(int size); | 18 explicit SimpleBuffer(int size); |
| 19 virtual ~SimpleBuffer(); | 19 virtual ~SimpleBuffer(); |
| 20 | 20 |
| 21 std::string str() const; | 21 std::string str() const; |
| 22 | 22 |
| 23 typedef char * iterator; | 23 typedef char* iterator; |
| 24 typedef const char * const_iterator; | 24 typedef const char* const_iterator; |
| 25 | 25 |
| 26 iterator begin() { return storage_ + read_idx_; } | 26 iterator begin() { return storage_ + read_idx_; } |
| 27 const_iterator begin() const { return storage_ + read_idx_; } | 27 const_iterator begin() const { return storage_ + read_idx_; } |
| 28 | 28 |
| 29 iterator end() { return storage_ + write_idx_; } | 29 iterator end() { return storage_ + write_idx_; } |
| 30 const_iterator end() const { return storage_ + write_idx_; } | 30 const_iterator end() const { return storage_ + write_idx_; } |
| 31 | 31 |
| 32 // The following functions all override pure virtual functions | 32 // The following functions all override pure virtual functions |
| 33 // in BufferInterface. See buffer_interface.h for a description | 33 // in BufferInterface. See buffer_interface.h for a description |
| 34 // of what they do. | 34 // of what they do. |
| 35 virtual int ReadableBytes() const OVERRIDE; | 35 virtual int ReadableBytes() const OVERRIDE; |
| 36 virtual int BufferSize() const OVERRIDE; | 36 virtual int BufferSize() const OVERRIDE; |
| 37 virtual int BytesFree() const OVERRIDE; | 37 virtual int BytesFree() const OVERRIDE; |
| 38 | 38 |
| 39 virtual bool Empty() const OVERRIDE; | 39 virtual bool Empty() const OVERRIDE; |
| 40 virtual bool Full() const OVERRIDE; | 40 virtual bool Full() const OVERRIDE; |
| 41 | 41 |
| 42 virtual int Write(const char* bytes, int size) OVERRIDE; | 42 virtual int Write(const char* bytes, int size) OVERRIDE; |
| 43 | 43 |
| 44 virtual void GetWritablePtr(char **ptr, int* size) const OVERRIDE; | 44 virtual void GetWritablePtr(char** ptr, int* size) const OVERRIDE; |
| 45 | 45 |
| 46 virtual void GetReadablePtr(char **ptr, int* size) const OVERRIDE; | 46 virtual void GetReadablePtr(char** ptr, int* size) const OVERRIDE; |
| 47 | 47 |
| 48 virtual int Read(char* bytes, int size) OVERRIDE; | 48 virtual int Read(char* bytes, int size) OVERRIDE; |
| 49 | 49 |
| 50 virtual void Clear() OVERRIDE; | 50 virtual void Clear() OVERRIDE; |
| 51 | 51 |
| 52 // This can be an expensive operation: costing a new/delete, and copying of | 52 // This can be an expensive operation: costing a new/delete, and copying of |
| 53 // all existing data. Even if the existing buffer does not need to be | 53 // all existing data. Even if the existing buffer does not need to be |
| 54 // resized, unread data may still need to be non-destructively copied to | 54 // resized, unread data may still need to be non-destructively copied to |
| 55 // consolidate fragmented free space. | 55 // consolidate fragmented free space. |
| 56 virtual bool Reserve(int size) OVERRIDE; | 56 virtual bool Reserve(int size) OVERRIDE; |
| (...skipping 20 matching lines...) Expand all Loading... |
| 77 other->storage_size_ = tmp_int; | 77 other->storage_size_ = tmp_int; |
| 78 } | 78 } |
| 79 | 79 |
| 80 protected: | 80 protected: |
| 81 char* storage_; | 81 char* storage_; |
| 82 int write_idx_; | 82 int write_idx_; |
| 83 int read_idx_; | 83 int read_idx_; |
| 84 int storage_size_; | 84 int storage_size_; |
| 85 | 85 |
| 86 private: | 86 private: |
| 87 //DISALLOW_COPY_AND_ASSIGN(SimpleBuffer); | 87 // DISALLOW_COPY_AND_ASSIGN(SimpleBuffer); |
| 88 }; | 88 }; |
| 89 | 89 |
| 90 } // namespace net | 90 } // namespace net |
| 91 | 91 |
| 92 #endif // NET_TOOLS_BALSA_SIMPLE_BUFFER_H__ | 92 #endif // NET_TOOLS_BALSA_SIMPLE_BUFFER_H__ |
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