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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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