| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef V8PerContextData_h |
| #define V8PerContextData_h |
| |
| #include "bindings/core/v8/ScopedPersistent.h" |
| #include "bindings/core/v8/V0CustomElementBinding.h" |
| #include "bindings/core/v8/V8GlobalValueMap.h" |
| #include "bindings/core/v8/WrapperTypeInfo.h" |
| #include "core/CoreExport.h" |
| #include "gin/public/context_holder.h" |
| #include "gin/public/gin_embedders.h" |
| #include "wtf/Allocator.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/Vector.h" |
| #include "wtf/text/AtomicString.h" |
| #include "wtf/text/AtomicStringHash.h" |
| #include <v8.h> |
| |
| namespace blink { |
| |
| class V8DOMActivityLogger; |
| class V8PerContextData; |
| |
| enum V8ContextEmbedderDataField { |
| v8ContextPerContextDataIndex = static_cast<int>(gin::kPerContextDataStartIndex + gin::kEmbedderBlink), |
| }; |
| |
| class CORE_EXPORT V8PerContextData final { |
| USING_FAST_MALLOC(V8PerContextData); |
| WTF_MAKE_NONCOPYABLE(V8PerContextData); |
| public: |
| static PassOwnPtr<V8PerContextData> create(v8::Local<v8::Context>); |
| |
| static V8PerContextData* from(v8::Local<v8::Context>); |
| |
| ~V8PerContextData(); |
| |
| v8::Local<v8::Context> context() { return m_context.newLocal(m_isolate); } |
| |
| // To create JS Wrapper objects, we create a cache of a 'boiler plate' |
| // object, and then simply Clone that object each time we need a new one. |
| // This is faster than going through the full object creation process. |
| v8::Local<v8::Object> createWrapperFromCache(const WrapperTypeInfo* type) |
| { |
| v8::Local<v8::Object> boilerplate = m_wrapperBoilerplates.Get(type); |
| return !boilerplate.IsEmpty() ? boilerplate->Clone() : createWrapperFromCacheSlowCase(type); |
| } |
| |
| v8::Local<v8::Function> constructorForType(const WrapperTypeInfo* type) |
| { |
| v8::Local<v8::Function> interfaceObject = m_constructorMap.Get(type); |
| return (!interfaceObject.IsEmpty()) ? interfaceObject : constructorForTypeSlowCase(type); |
| } |
| |
| v8::Local<v8::Object> prototypeForType(const WrapperTypeInfo*); |
| |
| void addCustomElementBinding(PassOwnPtr<V0CustomElementBinding>); |
| |
| V8DOMActivityLogger* activityLogger() const { return m_activityLogger; } |
| void setActivityLogger(V8DOMActivityLogger* activityLogger) { m_activityLogger = activityLogger; } |
| |
| v8::Local<v8::Value> compiledPrivateScript(String); |
| void setCompiledPrivateScript(String, v8::Local<v8::Value>); |
| |
| private: |
| V8PerContextData(v8::Local<v8::Context>); |
| |
| v8::Local<v8::Object> createWrapperFromCacheSlowCase(const WrapperTypeInfo*); |
| v8::Local<v8::Function> constructorForTypeSlowCase(const WrapperTypeInfo*); |
| |
| v8::Isolate* m_isolate; |
| |
| // For each possible type of wrapper, we keep a boilerplate object. |
| // The boilerplate is used to create additional wrappers of the same type. |
| typedef V8GlobalValueMap<const WrapperTypeInfo*, v8::Object, v8::kNotWeak> WrapperBoilerplateMap; |
| WrapperBoilerplateMap m_wrapperBoilerplates; |
| |
| typedef V8GlobalValueMap<const WrapperTypeInfo*, v8::Function, v8::kNotWeak> ConstructorMap; |
| ConstructorMap m_constructorMap; |
| |
| OwnPtr<gin::ContextHolder> m_contextHolder; |
| |
| ScopedPersistent<v8::Context> m_context; |
| ScopedPersistent<v8::Value> m_errorPrototype; |
| |
| typedef Vector<OwnPtr<V0CustomElementBinding>> V0CustomElementBindingList; |
| V0CustomElementBindingList m_customElementBindings; |
| |
| // This is owned by a static hash map in V8DOMActivityLogger. |
| V8DOMActivityLogger* m_activityLogger; |
| |
| V8GlobalValueMap<String, v8::Value, v8::kNotWeak> m_compiledPrivateScript; |
| }; |
| |
| } // namespace blink |
| |
| #endif // V8PerContextData_h |