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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 |
| (...skipping 29 matching lines...) Expand all Loading... |
| 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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