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1 /* | 1 /* |
2 * Copyright (C) 2009 Google Inc. All rights reserved. | 2 * Copyright (C) 2009 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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40 class WebCoreStringResourceBase { | 40 class WebCoreStringResourceBase { |
41 USING_FAST_MALLOC(WebCoreStringResourceBase); | 41 USING_FAST_MALLOC(WebCoreStringResourceBase); |
42 WTF_MAKE_NONCOPYABLE(WebCoreStringResourceBase); | 42 WTF_MAKE_NONCOPYABLE(WebCoreStringResourceBase); |
43 | 43 |
44 public: | 44 public: |
45 explicit WebCoreStringResourceBase(const String& string) | 45 explicit WebCoreStringResourceBase(const String& string) |
46 : plain_string_(string) { | 46 : plain_string_(string) { |
47 #if DCHECK_IS_ON() | 47 #if DCHECK_IS_ON() |
48 thread_id_ = WTF::CurrentThread(); | 48 thread_id_ = WTF::CurrentThread(); |
49 #endif | 49 #endif |
50 ASSERT(!string.IsNull()); | 50 DCHECK(!string.IsNull()); |
51 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( | 51 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( |
52 string.CharactersSizeInBytes()); | 52 string.CharactersSizeInBytes()); |
53 } | 53 } |
54 | 54 |
55 explicit WebCoreStringResourceBase(const AtomicString& string) | 55 explicit WebCoreStringResourceBase(const AtomicString& string) |
56 : plain_string_(string.GetString()), atomic_string_(string) { | 56 : plain_string_(string.GetString()), atomic_string_(string) { |
57 #if DCHECK_IS_ON() | 57 #if DCHECK_IS_ON() |
58 thread_id_ = WTF::CurrentThread(); | 58 thread_id_ = WTF::CurrentThread(); |
59 #endif | 59 #endif |
60 ASSERT(!string.IsNull()); | 60 DCHECK(!string.IsNull()); |
61 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( | 61 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( |
62 string.CharactersSizeInBytes()); | 62 string.CharactersSizeInBytes()); |
63 } | 63 } |
64 | 64 |
65 virtual ~WebCoreStringResourceBase() { | 65 virtual ~WebCoreStringResourceBase() { |
66 #if DCHECK_IS_ON() | 66 #if DCHECK_IS_ON() |
67 ASSERT(thread_id_ == WTF::CurrentThread()); | 67 DCHECK_EQ(thread_id_, WTF::CurrentThread()); |
68 #endif | 68 #endif |
69 int64_t reduced_external_memory = plain_string_.CharactersSizeInBytes(); | 69 int64_t reduced_external_memory = plain_string_.CharactersSizeInBytes(); |
70 if (plain_string_.Impl() != atomic_string_.Impl() && | 70 if (plain_string_.Impl() != atomic_string_.Impl() && |
71 !atomic_string_.IsNull()) | 71 !atomic_string_.IsNull()) |
72 reduced_external_memory += atomic_string_.CharactersSizeInBytes(); | 72 reduced_external_memory += atomic_string_.CharactersSizeInBytes(); |
73 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( | 73 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( |
74 -reduced_external_memory); | 74 -reduced_external_memory); |
75 } | 75 } |
76 | 76 |
77 const String& WebcoreString() { return plain_string_; } | 77 const String& WebcoreString() { return plain_string_; } |
78 | 78 |
79 const AtomicString& GetAtomicString() { | 79 const AtomicString& GetAtomicString() { |
80 #if DCHECK_IS_ON() | 80 #if DCHECK_IS_ON() |
81 ASSERT(thread_id_ == WTF::CurrentThread()); | 81 DCHECK_EQ(thread_id_, WTF::CurrentThread()); |
82 #endif | 82 #endif |
83 if (atomic_string_.IsNull()) { | 83 if (atomic_string_.IsNull()) { |
84 atomic_string_ = AtomicString(plain_string_); | 84 atomic_string_ = AtomicString(plain_string_); |
85 ASSERT(!atomic_string_.IsNull()); | 85 DCHECK(!atomic_string_.IsNull()); |
86 if (plain_string_.Impl() != atomic_string_.Impl()) | 86 if (plain_string_.Impl() != atomic_string_.Impl()) |
87 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( | 87 v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory( |
88 atomic_string_.CharactersSizeInBytes()); | 88 atomic_string_.CharactersSizeInBytes()); |
89 } | 89 } |
90 return atomic_string_; | 90 return atomic_string_; |
91 } | 91 } |
92 | 92 |
93 protected: | 93 protected: |
94 // A shallow copy of the string. Keeps the string buffer alive until the V8 | 94 // A shallow copy of the string. Keeps the string buffer alive until the V8 |
95 // engine garbage collects it. | 95 // engine garbage collects it. |
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108 }; | 108 }; |
109 | 109 |
110 class WebCoreStringResource16 final | 110 class WebCoreStringResource16 final |
111 : public WebCoreStringResourceBase, | 111 : public WebCoreStringResourceBase, |
112 public v8::String::ExternalStringResource { | 112 public v8::String::ExternalStringResource { |
113 WTF_MAKE_NONCOPYABLE(WebCoreStringResource16); | 113 WTF_MAKE_NONCOPYABLE(WebCoreStringResource16); |
114 | 114 |
115 public: | 115 public: |
116 explicit WebCoreStringResource16(const String& string) | 116 explicit WebCoreStringResource16(const String& string) |
117 : WebCoreStringResourceBase(string) { | 117 : WebCoreStringResourceBase(string) { |
118 ASSERT(!string.Is8Bit()); | 118 DCHECK(!string.Is8Bit()); |
119 } | 119 } |
120 | 120 |
121 explicit WebCoreStringResource16(const AtomicString& string) | 121 explicit WebCoreStringResource16(const AtomicString& string) |
122 : WebCoreStringResourceBase(string) { | 122 : WebCoreStringResourceBase(string) { |
123 ASSERT(!string.Is8Bit()); | 123 DCHECK(!string.Is8Bit()); |
124 } | 124 } |
125 | 125 |
126 size_t length() const override { return plain_string_.Impl()->length(); } | 126 size_t length() const override { return plain_string_.Impl()->length(); } |
127 const uint16_t* data() const override { | 127 const uint16_t* data() const override { |
128 return reinterpret_cast<const uint16_t*>( | 128 return reinterpret_cast<const uint16_t*>( |
129 plain_string_.Impl()->Characters16()); | 129 plain_string_.Impl()->Characters16()); |
130 } | 130 } |
131 }; | 131 }; |
132 | 132 |
133 class WebCoreStringResource8 final | 133 class WebCoreStringResource8 final |
134 : public WebCoreStringResourceBase, | 134 : public WebCoreStringResourceBase, |
135 public v8::String::ExternalOneByteStringResource { | 135 public v8::String::ExternalOneByteStringResource { |
136 WTF_MAKE_NONCOPYABLE(WebCoreStringResource8); | 136 WTF_MAKE_NONCOPYABLE(WebCoreStringResource8); |
137 | 137 |
138 public: | 138 public: |
139 explicit WebCoreStringResource8(const String& string) | 139 explicit WebCoreStringResource8(const String& string) |
140 : WebCoreStringResourceBase(string) { | 140 : WebCoreStringResourceBase(string) { |
141 ASSERT(string.Is8Bit()); | 141 DCHECK(string.Is8Bit()); |
142 } | 142 } |
143 | 143 |
144 explicit WebCoreStringResource8(const AtomicString& string) | 144 explicit WebCoreStringResource8(const AtomicString& string) |
145 : WebCoreStringResourceBase(string) { | 145 : WebCoreStringResourceBase(string) { |
146 ASSERT(string.Is8Bit()); | 146 DCHECK(string.Is8Bit()); |
147 } | 147 } |
148 | 148 |
149 size_t length() const override { return plain_string_.Impl()->length(); } | 149 size_t length() const override { return plain_string_.Impl()->length(); } |
150 const char* data() const override { | 150 const char* data() const override { |
151 return reinterpret_cast<const char*>(plain_string_.Impl()->Characters8()); | 151 return reinterpret_cast<const char*>(plain_string_.Impl()->Characters8()); |
152 } | 152 } |
153 }; | 153 }; |
154 | 154 |
155 enum ExternalMode { kExternalize, kDoNotExternalize }; | 155 enum ExternalMode { kExternalize, kDoNotExternalize }; |
156 | 156 |
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262 String string_; | 262 String string_; |
263 }; | 263 }; |
264 | 264 |
265 template <> | 265 template <> |
266 inline bool V8StringResource<kDefaultMode>::IsValid() const { | 266 inline bool V8StringResource<kDefaultMode>::IsValid() const { |
267 return true; | 267 return true; |
268 } | 268 } |
269 | 269 |
270 template <> | 270 template <> |
271 inline String V8StringResource<kDefaultMode>::FallbackString() const { | 271 inline String V8StringResource<kDefaultMode>::FallbackString() const { |
272 ASSERT_NOT_REACHED(); | 272 NOTREACHED(); |
273 return String(); | 273 return String(); |
274 } | 274 } |
275 | 275 |
276 template <> | 276 template <> |
277 inline bool V8StringResource<kTreatNullAsEmptyString>::IsValid() const { | 277 inline bool V8StringResource<kTreatNullAsEmptyString>::IsValid() const { |
278 return !v8_object_->IsNull(); | 278 return !v8_object_->IsNull(); |
279 } | 279 } |
280 | 280 |
281 template <> | 281 template <> |
282 inline String V8StringResource<kTreatNullAsEmptyString>::FallbackString() | 282 inline String V8StringResource<kTreatNullAsEmptyString>::FallbackString() |
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302 | 302 |
303 template <> | 303 template <> |
304 inline String | 304 inline String |
305 V8StringResource<kTreatNullAndUndefinedAsNullString>::FallbackString() const { | 305 V8StringResource<kTreatNullAndUndefinedAsNullString>::FallbackString() const { |
306 return String(); | 306 return String(); |
307 } | 307 } |
308 | 308 |
309 } // namespace blink | 309 } // namespace blink |
310 | 310 |
311 #endif // V8StringResource_h | 311 #endif // V8StringResource_h |
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