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/*
* 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/CustomElementBinding.h"
#include "bindings/core/v8/ScopedPersistent.h"
#include "bindings/core/v8/V8PersistentValueMap.h"
#include "bindings/core/v8/WrapperTypeInfo.h"
#include "gin/public/context_holder.h"
#include "gin/public/gin_embedders.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 CustomElementDefinition;
class V8DOMActivityLogger;
class V8PerContextData;
struct V8NPObject;
typedef WTF::Vector<V8NPObject*> V8NPObjectVector;
typedef WTF::HashMap<int, V8NPObjectVector> V8NPObjectMap;
enum V8ContextEmbedderDataField {
v8ContextDebugIdIndex = static_cast<int>(gin::kDebugIdIndex),
v8ContextPerContextDataIndex = static_cast<int>(gin::kPerContextDataStartIndex + gin::kEmbedderBlink),
};
class V8PerContextData {
public:
static PassOwnPtr<V8PerContextData> create(v8::Handle<v8::Context>);
static V8PerContextData* from(v8::Handle<v8::Context>);
~V8PerContextData();
v8::Handle<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> function = m_constructorMap.Get(type);
return (!function.IsEmpty()) ? function : constructorForTypeSlowCase(type);
}
v8::Local<v8::Object> prototypeForType(const WrapperTypeInfo*);
V8NPObjectMap* v8NPObjectMap() { return &m_v8NPObjectMap; }
void addCustomElementBinding(CustomElementDefinition*, PassOwnPtr<CustomElementBinding>);
V8DOMActivityLogger* activityLogger() const { return m_activityLogger; }
void setActivityLogger(V8DOMActivityLogger* activityLogger) { m_activityLogger = activityLogger; }
v8::Handle<v8::Value> compiledPrivateScript(String);
void setCompiledPrivateScript(String, v8::Handle<v8::Value>);
private:
V8PerContextData(v8::Handle<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 V8PersistentValueMap<const WrapperTypeInfo*, v8::Object, false> WrapperBoilerplateMap;
WrapperBoilerplateMap m_wrapperBoilerplates;
typedef V8PersistentValueMap<const WrapperTypeInfo*, v8::Function, false> ConstructorMap;
ConstructorMap m_constructorMap;
V8NPObjectMap m_v8NPObjectMap;
OwnPtr<gin::ContextHolder> m_contextHolder;
ScopedPersistent<v8::Context> m_context;
ScopedPersistent<v8::Value> m_errorPrototype;
typedef Vector<OwnPtr<CustomElementBinding> > CustomElementBindingList;
CustomElementBindingList m_customElementBindings;
// This is owned by a static hash map in V8DOMActivityLogger.
V8DOMActivityLogger* m_activityLogger;
V8PersistentValueMap<String, v8::Value, false> m_compiledPrivateScript;
};
class V8PerContextDebugData {
public:
static bool setContextDebugData(v8::Handle<v8::Context>, const char* worldName, int debugId);
static int contextDebugId(v8::Handle<v8::Context>);
};
} // namespace blink
#endif // V8PerContextData_h
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