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1 // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2010 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_DISK_CACHE_MEM_ENTRY_IMPL_H_ | 5 #ifndef NET_DISK_CACHE_MEM_ENTRY_IMPL_H_ |
6 #define NET_DISK_CACHE_MEM_ENTRY_IMPL_H_ | 6 #define NET_DISK_CACHE_MEM_ENTRY_IMPL_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/hash_tables.h" | 9 #include "base/hash_tables.h" |
10 #include "base/scoped_ptr.h" | 10 #include "base/scoped_ptr.h" |
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45 | 45 |
46 class MemEntryImpl : public Entry { | 46 class MemEntryImpl : public Entry { |
47 public: | 47 public: |
48 enum EntryType { | 48 enum EntryType { |
49 kParentEntry, | 49 kParentEntry, |
50 kChildEntry, | 50 kChildEntry, |
51 }; | 51 }; |
52 | 52 |
53 explicit MemEntryImpl(MemBackendImpl* backend); | 53 explicit MemEntryImpl(MemBackendImpl* backend); |
54 | 54 |
55 // Entry interface. | |
56 virtual void Doom(); | |
57 virtual void Close(); | |
58 virtual std::string GetKey() const; | |
59 virtual base::Time GetLastUsed() const; | |
60 virtual base::Time GetLastModified() const; | |
61 virtual int32 GetDataSize(int index) const; | |
62 virtual int ReadData(int index, int offset, net::IOBuffer* buf, int buf_len, | |
63 net::CompletionCallback* completion_callback); | |
64 virtual int WriteData(int index, int offset, net::IOBuffer* buf, int buf_len, | |
65 net::CompletionCallback* completion_callback, | |
66 bool truncate); | |
67 virtual int ReadSparseData(int64 offset, net::IOBuffer* buf, int buf_len, | |
68 net::CompletionCallback* completion_callback); | |
69 virtual int WriteSparseData(int64 offset, net::IOBuffer* buf, int buf_len, | |
70 net::CompletionCallback* completion_callback); | |
71 virtual int GetAvailableRange(int64 offset, int len, int64* start, | |
72 CompletionCallback* callback); | |
73 virtual bool CouldBeSparse() const; | |
74 virtual void CancelSparseIO() {} | |
75 virtual int ReadyForSparseIO(net::CompletionCallback* completion_callback); | |
76 | |
77 // Performs the initialization of a EntryImpl that will be added to the | 55 // Performs the initialization of a EntryImpl that will be added to the |
78 // cache. | 56 // cache. |
79 bool CreateEntry(const std::string& key); | 57 bool CreateEntry(const std::string& key); |
80 | 58 |
81 // Permanently destroys this entry. | 59 // Permanently destroys this entry. |
82 void InternalDoom(); | 60 void InternalDoom(); |
83 | 61 |
84 void Open(); | 62 void Open(); |
85 bool InUse(); | 63 bool InUse(); |
86 | 64 |
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97 } | 75 } |
98 | 76 |
99 void set_prev(MemEntryImpl* prev) { | 77 void set_prev(MemEntryImpl* prev) { |
100 prev_ = prev; | 78 prev_ = prev; |
101 } | 79 } |
102 | 80 |
103 EntryType type() const { | 81 EntryType type() const { |
104 return parent_ ? kChildEntry : kParentEntry; | 82 return parent_ ? kChildEntry : kParentEntry; |
105 } | 83 } |
106 | 84 |
| 85 // Entry interface. |
| 86 virtual void Doom(); |
| 87 virtual void Close(); |
| 88 virtual std::string GetKey() const; |
| 89 virtual base::Time GetLastUsed() const; |
| 90 virtual base::Time GetLastModified() const; |
| 91 virtual int32 GetDataSize(int index) const; |
| 92 virtual int ReadData(int index, int offset, net::IOBuffer* buf, int buf_len, |
| 93 net::CompletionCallback* completion_callback); |
| 94 virtual int WriteData(int index, int offset, net::IOBuffer* buf, int buf_len, |
| 95 net::CompletionCallback* completion_callback, |
| 96 bool truncate); |
| 97 virtual int ReadSparseData(int64 offset, net::IOBuffer* buf, int buf_len, |
| 98 net::CompletionCallback* completion_callback); |
| 99 virtual int WriteSparseData(int64 offset, net::IOBuffer* buf, int buf_len, |
| 100 net::CompletionCallback* completion_callback); |
| 101 virtual int GetAvailableRange(int64 offset, int len, int64* start, |
| 102 CompletionCallback* callback); |
| 103 virtual bool CouldBeSparse() const; |
| 104 virtual void CancelSparseIO() {} |
| 105 virtual int ReadyForSparseIO(net::CompletionCallback* completion_callback); |
| 106 |
107 private: | 107 private: |
108 typedef base::hash_map<int, MemEntryImpl*> EntryMap; | 108 typedef base::hash_map<int, MemEntryImpl*> EntryMap; |
109 | 109 |
110 enum { | 110 enum { |
111 NUM_STREAMS = 3 | 111 NUM_STREAMS = 3 |
112 }; | 112 }; |
113 | 113 |
114 ~MemEntryImpl(); | 114 ~MemEntryImpl(); |
115 | 115 |
116 // Old Entry interface. | 116 // Old Entry interface. |
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162 base::Time last_used_; | 162 base::Time last_used_; |
163 MemBackendImpl* backend_; // Back pointer to the cache. | 163 MemBackendImpl* backend_; // Back pointer to the cache. |
164 bool doomed_; // True if this entry was removed from the cache. | 164 bool doomed_; // True if this entry was removed from the cache. |
165 | 165 |
166 DISALLOW_COPY_AND_ASSIGN(MemEntryImpl); | 166 DISALLOW_COPY_AND_ASSIGN(MemEntryImpl); |
167 }; | 167 }; |
168 | 168 |
169 } // namespace disk_cache | 169 } // namespace disk_cache |
170 | 170 |
171 #endif // NET_DISK_CACHE_MEM_ENTRY_IMPL_H_ | 171 #endif // NET_DISK_CACHE_MEM_ENTRY_IMPL_H_ |
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