| /* |
| * Copyright (C) 2008-2017 Apple 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. |
| * |
| */ |
| |
| #include "config.h" |
| #include "WorkerThread.h" |
| |
| #include "IDBConnectionProxy.h" |
| #include "ScriptSourceCode.h" |
| #include "SecurityOrigin.h" |
| #include "SocketProvider.h" |
| #include "WorkerGlobalScope.h" |
| #include <wtf/Threading.h> |
| |
| namespace WebCore { |
| |
| static std::atomic<unsigned> workerThreadCounter { 0 }; |
| |
| unsigned WorkerThread::workerThreadCount() |
| { |
| return workerThreadCounter; |
| } |
| |
| WorkerParameters WorkerParameters::isolatedCopy() const |
| { |
| return { |
| scriptURL.isolatedCopy(), |
| name.isolatedCopy(), |
| identifier.isolatedCopy(), |
| userAgent.isolatedCopy(), |
| isOnline, |
| contentSecurityPolicyResponseHeaders, |
| shouldBypassMainWorldContentSecurityPolicy, |
| timeOrigin, |
| referrerPolicy, |
| requestAnimationFrameEnabled, |
| acceleratedCompositingEnabled, |
| webGLEnabled, |
| }; |
| } |
| |
| struct WorkerThreadStartupData { |
| WTF_MAKE_NONCOPYABLE(WorkerThreadStartupData); WTF_MAKE_FAST_ALLOCATED; |
| public: |
| WorkerThreadStartupData(const WorkerParameters& params, const String& sourceCode, WorkerThreadStartMode, const SecurityOrigin& topOrigin); |
| |
| WorkerParameters params; |
| Ref<SecurityOrigin> origin; |
| String sourceCode; |
| WorkerThreadStartMode startMode; |
| Ref<SecurityOrigin> topOrigin; |
| }; |
| |
| WorkerThreadStartupData::WorkerThreadStartupData(const WorkerParameters& other, const String& sourceCode, WorkerThreadStartMode startMode, const SecurityOrigin& topOrigin) |
| : params(other.isolatedCopy()) |
| , origin(SecurityOrigin::create(other.scriptURL)->isolatedCopy()) |
| , sourceCode(sourceCode.isolatedCopy()) |
| , startMode(startMode) |
| , topOrigin(topOrigin.isolatedCopy()) |
| { |
| } |
| |
| WorkerThread::WorkerThread(const WorkerParameters& params, const String& sourceCode, WorkerLoaderProxy& workerLoaderProxy, WorkerDebuggerProxy& workerDebuggerProxy, WorkerReportingProxy& workerReportingProxy, WorkerThreadStartMode startMode, const SecurityOrigin& topOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, JSC::RuntimeFlags runtimeFlags) |
| : WorkerOrWorkletThread(params.identifier.isolatedCopy()) |
| , m_workerLoaderProxy(workerLoaderProxy) |
| , m_workerDebuggerProxy(workerDebuggerProxy) |
| , m_workerReportingProxy(workerReportingProxy) |
| , m_runtimeFlags(runtimeFlags) |
| , m_startupData(makeUnique<WorkerThreadStartupData>(params, sourceCode, startMode, topOrigin)) |
| #if ENABLE(INDEXED_DATABASE) |
| , m_idbConnectionProxy(connectionProxy) |
| #endif |
| , m_socketProvider(socketProvider) |
| { |
| #if !ENABLE(INDEXED_DATABASE) |
| UNUSED_PARAM(connectionProxy); |
| #endif |
| ++workerThreadCounter; |
| } |
| |
| WorkerThread::~WorkerThread() |
| { |
| ASSERT(workerThreadCounter); |
| --workerThreadCounter; |
| } |
| |
| Ref<Thread> WorkerThread::createThread() |
| { |
| return Thread::create(isServiceWorkerThread() ? "WebCore: Service Worker" : "WebCore: Worker", [this] { |
| workerOrWorkletThread(); |
| }, ThreadType::JavaScript); |
| } |
| |
| Ref<WorkerOrWorkletGlobalScope> WorkerThread::createGlobalScope() |
| { |
| return createWorkerGlobalScope(m_startupData->params, WTFMove(m_startupData->origin), WTFMove(m_startupData->topOrigin)); |
| } |
| |
| bool WorkerThread::shouldWaitForWebInspectorOnStartup() const |
| { |
| return m_startupData->startMode == WorkerThreadStartMode::WaitForInspector; |
| } |
| |
| void WorkerThread::evaluateScriptIfNecessary(String& exceptionMessage) |
| { |
| globalScope()->script()->evaluate(ScriptSourceCode(m_startupData->sourceCode, URL(m_startupData->params.scriptURL)), &exceptionMessage); |
| |
| finishedEvaluatingScript(); |
| |
| // Free the startup data to cause its member variable deref's happen on the worker's thread (since |
| // all ref/derefs of these objects are happening on the thread at this point). Note that |
| // WorkerThread::~WorkerThread happens on a different thread where it was created. |
| m_startupData = nullptr; |
| } |
| |
| IDBClient::IDBConnectionProxy* WorkerThread::idbConnectionProxy() |
| { |
| #if ENABLE(INDEXED_DATABASE) |
| return m_idbConnectionProxy.get(); |
| #else |
| return nullptr; |
| #endif |
| } |
| |
| SocketProvider* WorkerThread::socketProvider() |
| { |
| return m_socketProvider.get(); |
| } |
| |
| WorkerGlobalScope* WorkerThread::globalScope() |
| { |
| return downcast<WorkerGlobalScope>(WorkerOrWorkletThread::globalScope()); |
| } |
| |
| } // namespace WebCore |