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| 1 /* | |
| 2 * Copyright (C) 2009, 2012 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 are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "config.h" | |
| 32 | |
| 33 #include "bindings/v8/WorkerScriptController.h" | |
| 34 | |
| 35 #include "bindings/core/v8/V8DedicatedWorkerGlobalScope.h" | |
| 36 #include "bindings/core/v8/V8SharedWorkerGlobalScope.h" | |
| 37 #include "bindings/core/v8/V8WorkerGlobalScope.h" | |
| 38 #include "bindings/modules/v8/V8ServiceWorkerGlobalScope.h" | |
| 39 #include "bindings/v8/ScriptSourceCode.h" | |
| 40 #include "bindings/v8/ScriptValue.h" | |
| 41 #include "bindings/v8/V8ErrorHandler.h" | |
| 42 #include "bindings/v8/V8GCController.h" | |
| 43 #include "bindings/v8/V8Initializer.h" | |
| 44 #include "bindings/v8/V8ObjectConstructor.h" | |
| 45 #include "bindings/v8/V8ScriptRunner.h" | |
| 46 #include "bindings/v8/WrapperTypeInfo.h" | |
| 47 #include "core/events/ErrorEvent.h" | |
| 48 #include "core/frame/DOMTimer.h" | |
| 49 #include "core/inspector/ScriptCallStack.h" | |
| 50 #include "core/workers/SharedWorkerGlobalScope.h" | |
| 51 #include "core/workers/WorkerGlobalScope.h" | |
| 52 #include "core/workers/WorkerObjectProxy.h" | |
| 53 #include "core/workers/WorkerThread.h" | |
| 54 #include "platform/heap/ThreadState.h" | |
| 55 #include <v8.h> | |
| 56 | |
| 57 #include "public/platform/Platform.h" | |
| 58 #include "public/platform/WebWorkerRunLoop.h" | |
| 59 | |
| 60 namespace WebCore { | |
| 61 | |
| 62 WorkerScriptController::WorkerScriptController(WorkerGlobalScope& workerGlobalSc
ope) | |
| 63 : m_isolate(v8::Isolate::New()) | |
| 64 , m_workerGlobalScope(workerGlobalScope) | |
| 65 , m_executionForbidden(false) | |
| 66 , m_executionScheduledToTerminate(false) | |
| 67 { | |
| 68 m_isolate->Enter(); | |
| 69 V8Initializer::initializeWorker(m_isolate); | |
| 70 v8::V8::Initialize(); | |
| 71 V8PerIsolateData::ensureInitialized(m_isolate); | |
| 72 m_world = DOMWrapperWorld::create(WorkerWorldId); | |
| 73 m_interruptor = adoptPtr(new V8IsolateInterruptor(m_isolate)); | |
| 74 ThreadState::current()->addInterruptor(m_interruptor.get()); | |
| 75 } | |
| 76 | |
| 77 // We need to postpone V8 Isolate destruction until the very end of | |
| 78 // worker thread finalization when all objects on the worker heap | |
| 79 // are destroyed. | |
| 80 class IsolateCleanupTask : public ThreadState::CleanupTask { | |
| 81 public: | |
| 82 static PassOwnPtr<IsolateCleanupTask> create(v8::Isolate* isolate) | |
| 83 { | |
| 84 return adoptPtr(new IsolateCleanupTask(isolate)); | |
| 85 } | |
| 86 | |
| 87 virtual void postCleanup() | |
| 88 { | |
| 89 V8PerIsolateData::dispose(m_isolate); | |
| 90 m_isolate->Exit(); | |
| 91 m_isolate->Dispose(); | |
| 92 } | |
| 93 | |
| 94 private: | |
| 95 explicit IsolateCleanupTask(v8::Isolate* isolate) : m_isolate(isolate) { } | |
| 96 | |
| 97 v8::Isolate* m_isolate; | |
| 98 }; | |
| 99 | |
| 100 WorkerScriptController::~WorkerScriptController() | |
| 101 { | |
| 102 ThreadState::current()->removeInterruptor(m_interruptor.get()); | |
| 103 | |
| 104 m_world->dispose(); | |
| 105 | |
| 106 // The corresponding call to didStartWorkerRunLoop is in | |
| 107 // WorkerThread::workerThread(). | |
| 108 // See http://webkit.org/b/83104#c14 for why this is here. | |
| 109 blink::Platform::current()->didStopWorkerRunLoop(blink::WebWorkerRunLoop(&m_
workerGlobalScope.thread()->runLoop())); | |
| 110 | |
| 111 if (isContextInitialized()) | |
| 112 m_scriptState->disposePerContextData(); | |
| 113 | |
| 114 ThreadState::current()->addCleanupTask(IsolateCleanupTask::create(m_isolate)
); | |
| 115 } | |
| 116 | |
| 117 bool WorkerScriptController::initializeContextIfNeeded() | |
| 118 { | |
| 119 v8::HandleScope handleScope(m_isolate); | |
| 120 | |
| 121 if (isContextInitialized()) | |
| 122 return true; | |
| 123 | |
| 124 v8::Handle<v8::Context> context = v8::Context::New(m_isolate); | |
| 125 if (context.IsEmpty()) | |
| 126 return false; | |
| 127 | |
| 128 m_scriptState = ScriptState::create(context, m_world); | |
| 129 | |
| 130 ScriptState::Scope scope(m_scriptState.get()); | |
| 131 | |
| 132 // Set DebugId for the new context. | |
| 133 context->SetEmbedderData(0, v8AtomicString(m_isolate, "worker")); | |
| 134 | |
| 135 // Create a new JS object and use it as the prototype for the shadow global
object. | |
| 136 const WrapperTypeInfo* contextType = &V8DedicatedWorkerGlobalScope::wrapperT
ypeInfo; | |
| 137 if (m_workerGlobalScope.isServiceWorkerGlobalScope()) | |
| 138 contextType = &V8ServiceWorkerGlobalScope::wrapperTypeInfo; | |
| 139 else if (!m_workerGlobalScope.isDedicatedWorkerGlobalScope()) | |
| 140 contextType = &V8SharedWorkerGlobalScope::wrapperTypeInfo; | |
| 141 v8::Handle<v8::Function> workerGlobalScopeConstructor = m_scriptState->perCo
ntextData()->constructorForType(contextType); | |
| 142 v8::Local<v8::Object> jsWorkerGlobalScope = V8ObjectConstructor::newInstance
(m_isolate, workerGlobalScopeConstructor); | |
| 143 if (jsWorkerGlobalScope.IsEmpty()) { | |
| 144 m_scriptState->disposePerContextData(); | |
| 145 return false; | |
| 146 } | |
| 147 | |
| 148 V8DOMWrapper::associateObjectWithWrapper<V8WorkerGlobalScope>(PassRefPtrWill
BeRawPtr<WorkerGlobalScope>(&m_workerGlobalScope), contextType, jsWorkerGlobalSc
ope, m_isolate, WrapperConfiguration::Dependent); | |
| 149 | |
| 150 // Insert the object instance as the prototype of the shadow object. | |
| 151 v8::Handle<v8::Object> globalObject = v8::Handle<v8::Object>::Cast(m_scriptS
tate->context()->Global()->GetPrototype()); | |
| 152 globalObject->SetPrototype(jsWorkerGlobalScope); | |
| 153 | |
| 154 return true; | |
| 155 } | |
| 156 | |
| 157 ScriptValue WorkerScriptController::evaluate(const String& script, const String&
fileName, const TextPosition& scriptStartPosition, WorkerGlobalScopeExecutionSt
ate* state) | |
| 158 { | |
| 159 if (!initializeContextIfNeeded()) | |
| 160 return ScriptValue(); | |
| 161 | |
| 162 ScriptState::Scope scope(m_scriptState.get()); | |
| 163 | |
| 164 if (!m_disableEvalPending.isEmpty()) { | |
| 165 m_scriptState->context()->AllowCodeGenerationFromStrings(false); | |
| 166 m_scriptState->context()->SetErrorMessageForCodeGenerationFromStrings(v8
String(m_isolate, m_disableEvalPending)); | |
| 167 m_disableEvalPending = String(); | |
| 168 } | |
| 169 | |
| 170 v8::TryCatch block; | |
| 171 | |
| 172 v8::Handle<v8::String> scriptString = v8String(m_isolate, script); | |
| 173 v8::Handle<v8::Script> compiledScript = V8ScriptRunner::compileScript(script
String, fileName, scriptStartPosition, 0, m_isolate); | |
| 174 v8::Local<v8::Value> result = V8ScriptRunner::runCompiledScript(compiledScri
pt, &m_workerGlobalScope, m_isolate); | |
| 175 | |
| 176 if (!block.CanContinue()) { | |
| 177 m_workerGlobalScope.script()->forbidExecution(); | |
| 178 return ScriptValue(); | |
| 179 } | |
| 180 | |
| 181 if (block.HasCaught()) { | |
| 182 v8::Local<v8::Message> message = block.Message(); | |
| 183 state->hadException = true; | |
| 184 state->errorMessage = toCoreString(message->Get()); | |
| 185 state->lineNumber = message->GetLineNumber(); | |
| 186 state->columnNumber = message->GetStartColumn() + 1; | |
| 187 TOSTRING_DEFAULT(V8StringResource<>, sourceURL, message->GetScriptOrigin
().ResourceName(), ScriptValue()); | |
| 188 state->sourceURL = sourceURL; | |
| 189 state->exception = ScriptValue(m_scriptState.get(), block.Exception()); | |
| 190 block.Reset(); | |
| 191 } else | |
| 192 state->hadException = false; | |
| 193 | |
| 194 if (result.IsEmpty() || result->IsUndefined()) | |
| 195 return ScriptValue(); | |
| 196 | |
| 197 return ScriptValue(m_scriptState.get(), result); | |
| 198 } | |
| 199 | |
| 200 void WorkerScriptController::evaluate(const ScriptSourceCode& sourceCode, RefPtr
WillBeRawPtr<ErrorEvent>* errorEvent) | |
| 201 { | |
| 202 if (isExecutionForbidden()) | |
| 203 return; | |
| 204 | |
| 205 WorkerGlobalScopeExecutionState state; | |
| 206 evaluate(sourceCode.source(), sourceCode.url().string(), sourceCode.startPos
ition(), &state); | |
| 207 if (state.hadException) { | |
| 208 if (errorEvent) { | |
| 209 *errorEvent = m_workerGlobalScope.shouldSanitizeScriptError(state.so
urceURL, NotSharableCrossOrigin) ? | |
| 210 ErrorEvent::createSanitizedError(m_world.get()) : ErrorEvent::cr
eate(state.errorMessage, state.sourceURL, state.lineNumber, state.columnNumber,
m_world.get()); | |
| 211 V8ErrorHandler::storeExceptionOnErrorEventWrapper(errorEvent->get(),
state.exception.v8Value(), m_scriptState->context()->Global(), m_isolate); | |
| 212 } else { | |
| 213 ASSERT(!m_workerGlobalScope.shouldSanitizeScriptError(state.sourceUR
L, NotSharableCrossOrigin)); | |
| 214 RefPtrWillBeRawPtr<ErrorEvent> event = nullptr; | |
| 215 if (m_errorEventFromImportedScript) { | |
| 216 event = m_errorEventFromImportedScript.release(); | |
| 217 } else { | |
| 218 event = ErrorEvent::create(state.errorMessage, state.sourceURL,
state.lineNumber, state.columnNumber, m_world.get()); | |
| 219 } | |
| 220 m_workerGlobalScope.reportException(event, nullptr, NotSharableCross
Origin); | |
| 221 } | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 void WorkerScriptController::scheduleExecutionTermination() | |
| 226 { | |
| 227 // The mutex provides a memory barrier to ensure that once | |
| 228 // termination is scheduled, isExecutionTerminating will | |
| 229 // accurately reflect that state when called from another thread. | |
| 230 { | |
| 231 MutexLocker locker(m_scheduledTerminationMutex); | |
| 232 m_executionScheduledToTerminate = true; | |
| 233 } | |
| 234 v8::V8::TerminateExecution(m_isolate); | |
| 235 } | |
| 236 | |
| 237 bool WorkerScriptController::isExecutionTerminating() const | |
| 238 { | |
| 239 // See comments in scheduleExecutionTermination regarding mutex usage. | |
| 240 MutexLocker locker(m_scheduledTerminationMutex); | |
| 241 return m_executionScheduledToTerminate; | |
| 242 } | |
| 243 | |
| 244 void WorkerScriptController::forbidExecution() | |
| 245 { | |
| 246 ASSERT(m_workerGlobalScope.isContextThread()); | |
| 247 m_executionForbidden = true; | |
| 248 } | |
| 249 | |
| 250 bool WorkerScriptController::isExecutionForbidden() const | |
| 251 { | |
| 252 ASSERT(m_workerGlobalScope.isContextThread()); | |
| 253 return m_executionForbidden; | |
| 254 } | |
| 255 | |
| 256 void WorkerScriptController::disableEval(const String& errorMessage) | |
| 257 { | |
| 258 m_disableEvalPending = errorMessage; | |
| 259 } | |
| 260 | |
| 261 void WorkerScriptController::rethrowExceptionFromImportedScript(PassRefPtrWillBe
RawPtr<ErrorEvent> errorEvent) | |
| 262 { | |
| 263 m_errorEventFromImportedScript = errorEvent; | |
| 264 throwError(V8ThrowException::createError(v8GeneralError, m_errorEventFromImp
ortedScript->message(), m_isolate), m_isolate); | |
| 265 } | |
| 266 | |
| 267 } // namespace WebCore | |
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Chromium Code Reviews
Issue 351423002:
Moved files under Source/bindings/v8 to Source/bindings/core/v8. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk