1 /*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "bindings/v8/V8PerIsolateData.h"
28
29 #include "bindings/v8/DOMDataStore.h"
30 #include "bindings/v8/ScriptGCEvent.h"
31 #include "bindings/v8/ScriptProfiler.h"
32 #include "bindings/v8/V8Binding.h"
33 #include "bindings/v8/V8HiddenPropertyName.h"
34 #include "bindings/v8/V8ObjectConstructor.h"
35 #include "bindings/v8/V8ScriptRunner.h"
36
37 namespace WebCore {
38
V8PerIsolateData(v8::Isolate * isolate)39 V8PerIsolateData::V8PerIsolateData(v8::Isolate* isolate)
40 : m_isolate(isolate)
41 , m_stringCache(adoptPtr(new StringCache()))
42 , m_workerDomDataStore(0)
43 , m_hiddenPropertyName(adoptPtr(new V8HiddenPropertyName()))
44 , m_constructorMode(ConstructorMode::CreateNewObject)
45 , m_recursionLevel(0)
46 #ifndef NDEBUG
47 , m_internalScriptRecursionLevel(0)
48 #endif
49 , m_gcEventData(adoptPtr(new GCEventData()))
50 , m_shouldCollectGarbageSoon(false)
51 {
52 }
53
~V8PerIsolateData()54 V8PerIsolateData::~V8PerIsolateData()
55 {
56 }
57
create(v8::Isolate * isolate)58 V8PerIsolateData* V8PerIsolateData::create(v8::Isolate* isolate)
59 {
60 ASSERT(isolate);
61 ASSERT(!isolate->GetData(gin::kEmbedderBlink));
62 V8PerIsolateData* data = new V8PerIsolateData(isolate);
63 isolate->SetData(gin::kEmbedderBlink, data);
64 return data;
65 }
66
ensureInitialized(v8::Isolate * isolate)67 void V8PerIsolateData::ensureInitialized(v8::Isolate* isolate)
68 {
69 ASSERT(isolate);
70 if (!isolate->GetData(gin::kEmbedderBlink))
71 create(isolate);
72 }
73
ensureLiveRoot()74 v8::Persistent<v8::Value>& V8PerIsolateData::ensureLiveRoot()
75 {
76 if (m_liveRoot.isEmpty())
77 m_liveRoot.set(m_isolate, v8::Null(m_isolate));
78 return m_liveRoot.getUnsafe();
79 }
80
dispose(v8::Isolate * isolate)81 void V8PerIsolateData::dispose(v8::Isolate* isolate)
82 {
83 void* data = isolate->GetData(gin::kEmbedderBlink);
84 delete static_cast<V8PerIsolateData*>(data);
85 isolate->SetData(gin::kEmbedderBlink, 0);
86 }
87
toStringTemplate()88 v8::Handle<v8::FunctionTemplate> V8PerIsolateData::toStringTemplate()
89 {
90 if (m_toStringTemplate.isEmpty())
91 m_toStringTemplate.set(m_isolate, v8::FunctionTemplate::New(m_isolate, constructorOfToString));
92 return m_toStringTemplate.newLocal(m_isolate);
93 }
94
privateTemplate(WrapperWorldType currentWorldType,void * privatePointer,v8::FunctionCallback callback,v8::Handle<v8::Value> data,v8::Handle<v8::Signature> signature,int length)95 v8::Handle<v8::FunctionTemplate> V8PerIsolateData::privateTemplate(WrapperWorldType currentWorldType, void* privatePointer, v8::FunctionCallback callback, v8::Handle<v8::Value> data, v8::Handle<v8::Signature> signature, int length)
96 {
97 TemplateMap& templates = templateMap(currentWorldType);
98 TemplateMap::iterator result = templates.find(privatePointer);
99 if (result != templates.end())
100 return result->value.newLocal(m_isolate);
101 v8::Local<v8::FunctionTemplate> templ = v8::FunctionTemplate::New(m_isolate, callback, data, signature, length);
102 templates.add(privatePointer, UnsafePersistent<v8::FunctionTemplate>(m_isolate, templ));
103 return templ;
104 }
105
privateTemplateIfExists(WrapperWorldType currentWorldType,void * privatePointer)106 v8::Handle<v8::FunctionTemplate> V8PerIsolateData::privateTemplateIfExists(WrapperWorldType currentWorldType, void* privatePointer)
107 {
108 TemplateMap& templates = templateMap(currentWorldType);
109 TemplateMap::iterator result = templates.find(privatePointer);
110 if (result != templates.end())
111 return result->value.newLocal(m_isolate);
112 return v8::Local<v8::FunctionTemplate>();
113 }
114
setPrivateTemplate(WrapperWorldType currentWorldType,void * privatePointer,v8::Handle<v8::FunctionTemplate> templ)115 void V8PerIsolateData::setPrivateTemplate(WrapperWorldType currentWorldType, void* privatePointer, v8::Handle<v8::FunctionTemplate> templ)
116 {
117 templateMap(currentWorldType).add(privatePointer, UnsafePersistent<v8::FunctionTemplate>(m_isolate, templ));
118 }
119
rawDOMTemplate(const WrapperTypeInfo * info,WrapperWorldType currentWorldType)120 v8::Handle<v8::FunctionTemplate> V8PerIsolateData::rawDOMTemplate(const WrapperTypeInfo* info, WrapperWorldType currentWorldType)
121 {
122 TemplateMap& templates = rawDOMTemplateMap(currentWorldType);
123 TemplateMap::iterator result = templates.find(info);
124 if (result != templates.end())
125 return result->value.newLocal(m_isolate);
126
127 v8::EscapableHandleScope handleScope(m_isolate);
128 v8::Local<v8::FunctionTemplate> templ = createRawTemplate(m_isolate);
129 templates.add(info, UnsafePersistent<v8::FunctionTemplate>(m_isolate, templ));
130 return handleScope.Escape(templ);
131 }
132
ensureRegexContext()133 v8::Local<v8::Context> V8PerIsolateData::ensureRegexContext()
134 {
135 if (m_regexContext.isEmpty()) {
136 v8::HandleScope handleScope(m_isolate);
137 m_regexContext.set(m_isolate, v8::Context::New(m_isolate));
138 }
139 return m_regexContext.newLocal(m_isolate);
140 }
141
hasInstance(const WrapperTypeInfo * info,v8::Handle<v8::Value> value,WrapperWorldType currentWorldType)142 bool V8PerIsolateData::hasInstance(const WrapperTypeInfo* info, v8::Handle<v8::Value> value, WrapperWorldType currentWorldType)
143 {
144 TemplateMap& templates = rawDOMTemplateMap(currentWorldType);
145 TemplateMap::iterator result = templates.find(info);
146 if (result == templates.end())
147 return false;
148 v8::HandleScope handleScope(m_isolate);
149 return result->value.newLocal(m_isolate)->HasInstance(value);
150 }
151
constructorOfToString(const v8::FunctionCallbackInfo<v8::Value> & info)152 void V8PerIsolateData::constructorOfToString(const v8::FunctionCallbackInfo<v8::Value>& info)
153 {
154 // The DOM constructors' toString functions grab the current toString
155 // for Functions by taking the toString function of itself and then
156 // calling it with the constructor as its receiver. This means that
157 // changes to the Function prototype chain or toString function are
158 // reflected when printing DOM constructors. The only wart is that
159 // changes to a DOM constructor's toString's toString will cause the
160 // toString of the DOM constructor itself to change. This is extremely
161 // obscure and unlikely to be a problem.
162 v8::Handle<v8::Value> value = info.Callee()->Get(v8AtomicString(info.GetIsolate(), "toString"));
163 if (!value->IsFunction()) {
164 v8SetReturnValue(info, v8::String::Empty(info.GetIsolate()));
165 return;
166 }
167 v8SetReturnValue(info, V8ScriptRunner::callInternalFunction(v8::Handle<v8::Function>::Cast(value), info.This(), 0, 0, v8::Isolate::GetCurrent()));
168 }
169
170 } // namespace WebCore
171