Merge WebKit at r75993: Initial merge by git.

Change-Id: I602bbdc3974787a3b0450456a30a7868286921c3

1 files changed, 158 insertions, 0 deletions

diff --git a/Source/WebKit/chromium/src/WebWorkerImpl.cpp b/Source/WebKit/chromium/src/WebWorkerImpl.cpp
new file mode 100644
index 0000000..165af68
--- /dev/null
+++ b/Source/WebKit/chromium/src/WebWorkerImpl.cpp
@@ -0,0 +1,158 @@
+/*
+ * 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 "WebWorkerImpl.h"
+
+#include "CrossThreadTask.h"
+#include "DedicatedWorkerContext.h"
+#include "DedicatedWorkerThread.h"
+#include "KURL.h"
+#include "MessageEvent.h"
+#include "MessagePort.h"
+#include "MessagePortChannel.h"
+#include "ScriptExecutionContext.h"
+#include "SecurityOrigin.h"
+#include "SerializedScriptValue.h"
+#include "SubstituteData.h"
+#include <wtf/Threading.h>
+
+#include "PlatformMessagePortChannel.h"
+#include "WebMessagePortChannel.h"
+#include "WebString.h"
+#include "WebURL.h"
+#include "WebWorkerClient.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+#if ENABLE(WORKERS)
+
+WebWorker* WebWorker::create(WebWorkerClient* client)
+{
+    return new WebWorkerImpl(client);
+}
+
+
+WebWorkerImpl::WebWorkerImpl(WebWorkerClient* client)
+    : m_client(client)
+{
+}
+
+WebWorkerImpl::~WebWorkerImpl()
+{
+}
+
+WebCommonWorkerClient* WebWorkerImpl::commonClient()
+{
+    return m_client;
+}
+
+void WebWorkerImpl::postMessageToWorkerContextTask(WebCore::ScriptExecutionContext* context,
+                                                   WebWorkerImpl* thisPtr,
+                                                   const String& message,
+                                                   PassOwnPtr<MessagePortChannelArray> channels)
+{
+    ASSERT(context->isWorkerContext());
+    DedicatedWorkerContext* workerContext =
+        static_cast<DedicatedWorkerContext*>(context);
+
+    OwnPtr<MessagePortArray> ports =
+        MessagePort::entanglePorts(*context, channels);
+    RefPtr<SerializedScriptValue> serializedMessage =
+        SerializedScriptValue::createFromWire(message);
+    workerContext->dispatchEvent(MessageEvent::create(
+        ports.release(), serializedMessage.release()));
+    thisPtr->confirmMessageFromWorkerObject(workerContext->hasPendingActivity());
+}
+
+// WebWorker -------------------------------------------------------------------
+
+void WebWorkerImpl::startWorkerContext(const WebURL& scriptUrl,
+                                       const WebString& userAgent,
+                                       const WebString& sourceCode)
+{
+    initializeLoader(scriptUrl);
+    setWorkerThread(DedicatedWorkerThread::create(scriptUrl, userAgent,
+                                                  sourceCode, *this, *this));
+    // Worker initialization means a pending activity.
+    reportPendingActivity(true);
+    workerThread()->start();
+}
+
+void WebWorkerImpl::terminateWorkerContext()
+{
+    stopWorkerThread();
+}
+
+void WebWorkerImpl::postMessageToWorkerContext(const WebString& message,
+                                               const WebMessagePortChannelArray& webChannels)
+{
+    OwnPtr<MessagePortChannelArray> channels;
+    if (webChannels.size()) {
+        channels = new MessagePortChannelArray(webChannels.size());
+        for (size_t i = 0; i < webChannels.size(); ++i) {
+            RefPtr<PlatformMessagePortChannel> platform_channel =
+                PlatformMessagePortChannel::create(webChannels[i]);
+            webChannels[i]->setClient(platform_channel.get());
+            (*channels)[i] = MessagePortChannel::create(platform_channel);
+        }
+    }
+
+    workerThread()->runLoop().postTask(
+        createCallbackTask(&postMessageToWorkerContextTask,
+                           this, String(message), channels.release()));
+}
+
+void WebWorkerImpl::workerObjectDestroyed()
+{
+    // Worker object in the renderer was destroyed, perhaps a result of GC.
+    // For us, it's a signal to start terminating the WorkerContext too.
+    // FIXME: when 'kill a worker' html5 spec algorithm is implemented, it
+    // should be used here instead of 'terminate a worker'.
+    terminateWorkerContext();
+}
+
+void WebWorkerImpl::clientDestroyed()
+{
+    m_client = 0;
+}
+
+#else
+
+WebWorker* WebWorker::create(WebWorkerClient* client)
+{
+    return 0;
+}
+
+#endif // ENABLE(WORKERS)
+
+} // namespace WebKit