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Side by Side Diff: base/memory/ref_counted_memory.h

Issue 7461141: Rename BASE_API to BASE_EXPORT. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 BASE_MEMORY_REF_COUNTED_MEMORY_H_ 5 #ifndef BASE_MEMORY_REF_COUNTED_MEMORY_H_
6 #define BASE_MEMORY_REF_COUNTED_MEMORY_H_ 6 #define BASE_MEMORY_REF_COUNTED_MEMORY_H_
7 #pragma once 7 #pragma once
8 8
9 #include <string> 9 #include <string>
10 #include <vector> 10 #include <vector>
11 11
12 #include "base/base_api.h" 12 #include "base/base_export.h"
13 #include "base/compiler_specific.h" 13 #include "base/compiler_specific.h"
14 #include "base/memory/ref_counted.h" 14 #include "base/memory/ref_counted.h"
15 15
16 // TODO(erg): The contents of this file should be in a namespace. This would 16 // TODO(erg): The contents of this file should be in a namespace. This would
17 // require touching >100 files in chrome/ though. 17 // require touching >100 files in chrome/ though.
18 18
19 // A generic interface to memory. This object is reference counted because one 19 // A generic interface to memory. This object is reference counted because one
20 // of its two subclasses own the data they carry, and we need to have 20 // of its two subclasses own the data they carry, and we need to have
21 // heterogeneous containers of these two types of memory. 21 // heterogeneous containers of these two types of memory.
22 class BASE_API RefCountedMemory 22 class BASE_EXPORT RefCountedMemory
23 : public base::RefCountedThreadSafe<RefCountedMemory> { 23 : public base::RefCountedThreadSafe<RefCountedMemory> {
24 public: 24 public:
25 // Retrieves a pointer to the beginning of the data we point to. If the data 25 // Retrieves a pointer to the beginning of the data we point to. If the data
26 // is empty, this will return NULL. 26 // is empty, this will return NULL.
27 virtual const unsigned char* front() const = 0; 27 virtual const unsigned char* front() const = 0;
28 28
29 // Size of the memory pointed to. 29 // Size of the memory pointed to.
30 virtual size_t size() const = 0; 30 virtual size_t size() const = 0;
31 31
32 protected: 32 protected:
33 friend class base::RefCountedThreadSafe<RefCountedMemory>; 33 friend class base::RefCountedThreadSafe<RefCountedMemory>;
34 RefCountedMemory(); 34 RefCountedMemory();
35 virtual ~RefCountedMemory(); 35 virtual ~RefCountedMemory();
36 }; 36 };
37 37
38 // An implementation of RefCountedMemory, where the ref counting does not 38 // An implementation of RefCountedMemory, where the ref counting does not
39 // matter. 39 // matter.
40 class BASE_API RefCountedStaticMemory : public RefCountedMemory { 40 class BASE_EXPORT RefCountedStaticMemory : public RefCountedMemory {
41 public: 41 public:
42 RefCountedStaticMemory() 42 RefCountedStaticMemory()
43 : data_(NULL), length_(0) {} 43 : data_(NULL), length_(0) {}
44 RefCountedStaticMemory(const unsigned char* data, size_t length) 44 RefCountedStaticMemory(const unsigned char* data, size_t length)
45 : data_(length ? data : NULL), length_(length) {} 45 : data_(length ? data : NULL), length_(length) {}
46 46
47 // Overridden from RefCountedMemory: 47 // Overridden from RefCountedMemory:
48 virtual const unsigned char* front() const OVERRIDE; 48 virtual const unsigned char* front() const OVERRIDE;
49 virtual size_t size() const OVERRIDE; 49 virtual size_t size() const OVERRIDE;
50 50
51 private: 51 private:
52 const unsigned char* data_; 52 const unsigned char* data_;
53 size_t length_; 53 size_t length_;
54 54
55 DISALLOW_COPY_AND_ASSIGN(RefCountedStaticMemory); 55 DISALLOW_COPY_AND_ASSIGN(RefCountedStaticMemory);
56 }; 56 };
57 57
58 // An implementation of RefCountedMemory, where we own our the data in a 58 // An implementation of RefCountedMemory, where we own our the data in a
59 // vector. 59 // vector.
60 class BASE_API RefCountedBytes : public RefCountedMemory { 60 class BASE_EXPORT RefCountedBytes : public RefCountedMemory {
61 public: 61 public:
62 RefCountedBytes(); 62 RefCountedBytes();
63 63
64 // Constructs a RefCountedBytes object by _copying_ from |initializer|. 64 // Constructs a RefCountedBytes object by _copying_ from |initializer|.
65 RefCountedBytes(const std::vector<unsigned char>& initializer); 65 RefCountedBytes(const std::vector<unsigned char>& initializer);
66 66
67 // Constructs a RefCountedBytes object by performing a swap. (To non 67 // Constructs a RefCountedBytes object by performing a swap. (To non
68 // destructively build a RefCountedBytes, use the constructor that takes a 68 // destructively build a RefCountedBytes, use the constructor that takes a
69 // vector.) 69 // vector.)
70 static RefCountedBytes* TakeVector(std::vector<unsigned char>* to_destroy); 70 static RefCountedBytes* TakeVector(std::vector<unsigned char>* to_destroy);
(...skipping 11 matching lines...) Expand all
82 82
83 std::vector<unsigned char> data_; 83 std::vector<unsigned char> data_;
84 84
85 DISALLOW_COPY_AND_ASSIGN(RefCountedBytes); 85 DISALLOW_COPY_AND_ASSIGN(RefCountedBytes);
86 }; 86 };
87 87
88 namespace base { 88 namespace base {
89 89
90 // An implementation of RefCountedMemory, where the bytes are stored in an STL 90 // An implementation of RefCountedMemory, where the bytes are stored in an STL
91 // string. Use this if your data naturally arrives in that format. 91 // string. Use this if your data naturally arrives in that format.
92 class BASE_API RefCountedString : public RefCountedMemory { 92 class BASE_EXPORT RefCountedString : public RefCountedMemory {
93 public: 93 public:
94 RefCountedString(); 94 RefCountedString();
95 95
96 // Constructs a RefCountedString object by performing a swap. (To non 96 // Constructs a RefCountedString object by performing a swap. (To non
97 // destructively build a RefCountedString, use the default constructor and 97 // destructively build a RefCountedString, use the default constructor and
98 // copy into object->data()). 98 // copy into object->data()).
99 static RefCountedString* TakeString(std::string* to_destroy); 99 static RefCountedString* TakeString(std::string* to_destroy);
100 100
101 // Overridden from RefCountedMemory: 101 // Overridden from RefCountedMemory:
102 virtual const unsigned char* front() const OVERRIDE; 102 virtual const unsigned char* front() const OVERRIDE;
103 virtual size_t size() const OVERRIDE; 103 virtual size_t size() const OVERRIDE;
104 104
105 const std::string& data() const { return data_; } 105 const std::string& data() const { return data_; }
106 std::string& data() { return data_; } 106 std::string& data() { return data_; }
107 107
108 private: 108 private:
109 friend class base::RefCountedThreadSafe<RefCountedString>; 109 friend class base::RefCountedThreadSafe<RefCountedString>;
110 virtual ~RefCountedString(); 110 virtual ~RefCountedString();
111 111
112 std::string data_; 112 std::string data_;
113 113
114 DISALLOW_COPY_AND_ASSIGN(RefCountedString); 114 DISALLOW_COPY_AND_ASSIGN(RefCountedString);
115 }; 115 };
116 116
117 } // namespace base 117 } // namespace base
118 118
119 #endif // BASE_MEMORY_REF_COUNTED_MEMORY_H_ 119 #endif // BASE_MEMORY_REF_COUNTED_MEMORY_H_
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