| /* |
| * Copyright (C) 2009 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. |
| */ |
| |
| #include "config.h" |
| #include "WebKit.h" |
| |
| #include "IDBFactoryBackendProxy.h" |
| #include "RuntimeEnabledFeatures.h" |
| #include "WebMediaPlayerClientImpl.h" |
| #include "WebWorkerClientImpl.h" |
| #include "bindings/v8/V8Binding.h" |
| #include "bindings/v8/V8RecursionScope.h" |
| #include "core/Init.h" |
| #include "core/dom/Microtask.h" |
| #include "core/page/Frame.h" |
| #include "core/page/Page.h" |
| #include "core/page/Settings.h" |
| #include "core/platform/LayoutTestSupport.h" |
| #include "core/platform/Logging.h" |
| #include "core/platform/graphics/MediaPlayer.h" |
| #include "core/platform/graphics/chromium/ImageDecodingStore.h" |
| #include "core/workers/WorkerGlobalScopeProxy.h" |
| #include "wtf/Assertions.h" |
| #include "wtf/CryptographicallyRandomNumber.h" |
| #include "wtf/CurrentTime.h" |
| #include "wtf/MainThread.h" |
| #include "wtf/Threading.h" |
| #include "wtf/UnusedParam.h" |
| #include "wtf/text/AtomicString.h" |
| #include "wtf/text/TextEncoding.h" |
| #include "public/platform/Platform.h" |
| #include "public/platform/WebPrerenderingSupport.h" |
| #include "public/platform/WebThread.h" |
| #include <v8.h> |
| |
| namespace WebKit { |
| |
| namespace { |
| |
| class EndOfTaskRunner : public WebThread::TaskObserver { |
| public: |
| virtual void willProcessTask() { } |
| virtual void didProcessTask() |
| { |
| WebCore::Microtask::performCheckpoint(); |
| } |
| }; |
| |
| } // namespace |
| |
| static WebThread::TaskObserver* s_endOfTaskRunner = 0; |
| |
| // Make sure we are not re-initialized in the same address space. |
| // Doing so may cause hard to reproduce crashes. |
| static bool s_webKitInitialized = false; |
| |
| static bool generateEntropy(unsigned char* buffer, size_t length) |
| { |
| if (Platform::current()) { |
| Platform::current()->cryptographicallyRandomValues(buffer, length); |
| return true; |
| } |
| return false; |
| } |
| |
| #ifndef NDEBUG |
| static void assertV8RecursionScope() |
| { |
| ASSERT(!isMainThread() || WebCore::V8RecursionScope::properlyUsed()); |
| } |
| #endif |
| |
| void initialize(Platform* platform) |
| { |
| initializeWithoutV8(platform); |
| |
| v8::V8::SetEntropySource(&generateEntropy); |
| v8::V8::SetArrayBufferAllocator(WebCore::v8ArrayBufferAllocator()); |
| static const char* kArrayBufferFlag = "--harmony_array_buffer"; |
| v8::V8::SetFlagsFromString(kArrayBufferFlag, strlen(kArrayBufferFlag)); |
| v8::V8::Initialize(); |
| WebCore::V8PerIsolateData::ensureInitialized(v8::Isolate::GetCurrent()); |
| |
| // currentThread will always be non-null in production, but can be null in Chromium unit tests. |
| if (WebThread* currentThread = platform->currentThread()) { |
| #ifndef NDEBUG |
| v8::V8::AddCallCompletedCallback(&assertV8RecursionScope); |
| #endif |
| ASSERT(!s_endOfTaskRunner); |
| s_endOfTaskRunner = new EndOfTaskRunner; |
| currentThread->addTaskObserver(s_endOfTaskRunner); |
| } |
| } |
| |
| static double currentTimeFunction() |
| { |
| return Platform::current()->currentTime(); |
| } |
| |
| static double monotonicallyIncreasingTimeFunction() |
| { |
| return Platform::current()->monotonicallyIncreasingTime(); |
| } |
| |
| static void cryptographicallyRandomValues(unsigned char* buffer, size_t length) |
| { |
| Platform::current()->cryptographicallyRandomValues(buffer, length); |
| } |
| |
| static void callOnMainThreadFunction(WTF::MainThreadFunction function, void* context) |
| { |
| Platform::current()->callOnMainThread(function, context); |
| } |
| |
| void initializeWithoutV8(Platform* platform) |
| { |
| ASSERT(!s_webKitInitialized); |
| s_webKitInitialized = true; |
| |
| ASSERT(platform); |
| Platform::initialize(platform); |
| |
| WTF::setRandomSource(cryptographicallyRandomValues); |
| WTF::initialize(currentTimeFunction, monotonicallyIncreasingTimeFunction); |
| WTF::initializeMainThread(callOnMainThreadFunction); |
| WebCore::init(); |
| WebCore::ImageDecodingStore::initializeOnce(); |
| |
| // There are some code paths (for example, running WebKit in the browser |
| // process and calling into LocalStorage before anything else) where the |
| // UTF8 string encoding tables are used on a background thread before |
| // they're set up. This is a problem because their set up routines assert |
| // they're running on the main WebKitThread. It might be possible to make |
| // the initialization thread-safe, but given that so many code paths use |
| // this, initializing this lazily probably doesn't buy us much. |
| WTF::UTF8Encoding(); |
| |
| WebCore::setIDBFactoryBackendInterfaceCreateFunction(WebKit::IDBFactoryBackendProxy::create); |
| |
| WebCore::MediaPlayer::setMediaEngineCreateFunction(WebKit::WebMediaPlayerClientImpl::create); |
| |
| WebCore::WorkerGlobalScopeProxy::setCreateDelegate(WebWorkerClientImpl::createWorkerGlobalScopeProxy); |
| } |
| |
| |
| void shutdown() |
| { |
| // currentThread will always be non-null in production, but can be null in Chromium unit tests. |
| if (Platform::current()->currentThread()) { |
| ASSERT(s_endOfTaskRunner); |
| #ifndef NDEBUG |
| v8::V8::RemoveCallCompletedCallback(&assertV8RecursionScope); |
| #endif |
| Platform::current()->currentThread()->removeTaskObserver(s_endOfTaskRunner); |
| delete s_endOfTaskRunner; |
| s_endOfTaskRunner = 0; |
| } |
| |
| shutdownWithoutV8(); |
| |
| WebCore::V8PerIsolateData::dispose(v8::Isolate::GetCurrent()); |
| v8::V8::Dispose(); |
| } |
| |
| void shutdownWithoutV8() |
| { |
| ASSERT(!s_endOfTaskRunner); |
| WebCore::ImageDecodingStore::shutdown(); |
| WebCore::shutdown(); |
| Platform::shutdown(); |
| WebPrerenderingSupport::shutdown(); |
| } |
| |
| void setLayoutTestMode(bool value) |
| { |
| WebCore::setIsRunningLayoutTest(value); |
| } |
| |
| bool layoutTestMode() |
| { |
| return WebCore::isRunningLayoutTest(); |
| } |
| |
| void enableLogChannel(const char* name) |
| { |
| #if !LOG_DISABLED |
| WTFLogChannel* channel = WebCore::getChannelFromName(name); |
| if (channel) |
| channel->state = WTFLogChannelOn; |
| #else |
| UNUSED_PARAM(name); |
| #endif // !LOG_DISABLED |
| } |
| |
| void resetPluginCache(bool reloadPages) |
| { |
| WebCore::Page::refreshPlugins(reloadPages); |
| } |
| |
| } // namespace WebKit |