2009-06-21  Drew Wilson  <atwilson@google.com>

        Reviewed by David Levin.

        <https://bugs.webkit.org/show_bug.cgi?id=25043>
        Added support for multi-threaded MessagePorts.

        * wtf/MessageQueue.h:
        (WTF::::appendAndCheckEmpty):
            Added API to test whether the queue was empty before adding an element.

WebCore:

2009-06-21  Drew Wilson  <atwilson@google.com>

        Reviewed by David Levin.

        <https://bugs.webkit.org/show_bug.cgi?id=25043>
        Removed obsolete MessagePort.startConversation(), active and onclose APIs.

        Refactored MessagePortProxy into MessagePortChannel and a platform-dependent PlatformMessagePortChannel
        implementation. Modified APIs to simplify cross-process implementations by moving the messaging code
        entirely into the platform-dependent proxy.

        Created a thread-safe default PlatformMessagePortChannel implementation.

        Changed DOMWindow messaging to create the MessageEvent in the target ScriptExecutionContext to match how
        cross-thread MessagePorts work.

        * GNUMakefile.am:
        * WebCore.vcproj/WebCore.vcproj:
        * WebCore.xcodeproj/project.pbxproj:
            Added MessagePortChannel/PlatformMessagePortChannel files.
        * bindings/js/JSMessagePortCustom.cpp:
        (WebCore::JSMessagePort::mark):
            Changed ports to not mark their entangled pair as reachable, per the spec.
        * bindings/v8/custom/V8MessagePortCustom.cpp:
        * dom/MessageChannel.cpp:
        (WebCore::MessageChannel::MessageChannel):
            Updated to use PlatformMessagePortChannel::createChannel() to entangle the ports.
        * dom/MessagePort.cpp:
        (WebCore::MessagePort::MessagePort):
        (WebCore::MessagePort::~MessagePort):
        (WebCore::MessagePort::postMessage):
        (WebCore::MessagePort::disentangle):
        (WebCore::MessagePort::messageAvailable):
        (WebCore::MessagePort::start):
        (WebCore::MessagePort::close):
        (WebCore::MessagePort::entangle):
        (WebCore::MessagePort::contextDestroyed):
        (WebCore::MessagePort::dispatchMessages):
        (WebCore::MessagePort::setOnmessage):
        (WebCore::MessagePort::hasPendingActivity):
            Changed these APIs to delegate to new PlatformMessagePortChannel APIs.
        * dom/MessagePort.h:
            Renamed isQueueOpen() to started().
        * dom/MessagePort.idl:
            Removed startConversation and onclose.
        * dom/MessagePortProxy.h: Removed.
        * dom/MessagePortChannel.cpp: Added.
        (WebCore::MessagePortChannel::EventData::create):
        (WebCore::MessagePortChannel::EventData::EventData):
        (WebCore::MessagePortChannel::~MessagePortChannel):
        * dom/MessagePortChannel.h: Added.
        (WebCore::MessagePortChannel::EventData::message):
        (WebCore::MessagePortChannel::EventData::channel):
            Changed EventData to hold a reference to a MessagePortChannel object instead of a MessagePort to enable cross-thread messaging.
        (WebCore::MessagePortChannel::MessagePortChannel):
        (WebCore::MessagePortChannel::create):
        * dom/ScriptExecutionContext.cpp:
        (WebCore:ScriptExecutionContext::dispatchMessagePortEvents):
            Renamed isQueueOpen() to started().
        * dom/default/PlatformMessagePortChannel.cpp: Added.
        (WebCore::MessagePortChannel::entangleIfOpen):
        (WebCore::MessagePortChannel::disentangle):
        (WebCore::MessagePortChannel::postMessageToRemote):
        (WebCore::MessagePortChannel::tryGetMessageFromRemote):
        (WebCore::MessagePortChannel::close):
        (WebCore::MessagePortChannel::isConnectedTo):
        (WebCore::MessagePortChannel::hasPendingActivity):
        (WebCore::PlatformMessagePortChannel::PlatformMessagePortChannel):
        (WebCore::PlatformMessagePortChannel::~PlatformMessagePortChannel):
        (WebCore::PlatformMessagePortChannel::createChannel):
        (WebCore::PlatformMessagePortChannel::entangleIfOpen):
        (WebCore::PlatformMessagePortChannel::disentangle):
        (WebCore::PlatformMessagePortChannel::setRemotePort):
        (WebCore::PlatformMessagePortChannel::remotePort):
        (WebCore::PlatformMessagePortChannel::entangledChannel):
        (WebCore::PlatformMessagePortChannel::setEntangledChannel):
        (WebCore::PlatformMessagePortChannel::postMessageToRemote):
        (WebCore::PlatformMessagePortChannel::tryGetMessageFromRemote):
        (WebCore::PlatformMessagePortChannel::isConnectedTo):
        (WebCore::PlatformMessagePortChannel::close):
        (WebCore::PlatformMessagePortChannel::closeInternal):
        (WebCore::PlatformMessagePortChannel::hasPendingActivity):
        * dom/default/PlatformMessagePortChannel.h: Added.
        (WebCore::PlatformMessagePortChannel::MessagePortQueue::create):
        (WebCore::PlatformMessagePortChannel::MessagePortQueue::tryGetMessage):
        (WebCore::PlatformMessagePortChannel::MessagePortQueue::appendAndCheckEmpty):
        (WebCore::PlatformMessagePortChannel::MessagePortQueue::isEmpty):
        (WebCore::PlatformMessagePortChannel::MessagePortQueue::MessagePortQueue):
        * page/DOMWindow.cpp:
        (WebCore::PostMessageTimer::PostMessageTimer):
            Changed DOMWindow messaging to create the MessageEvent in the target ScriptExecutionContext to match how cross-thread MessagePorts work.
        (WebCore::PostMessageTimer::event):
        (WebCore::DOMWindow::postMessage):
        (WebCore::DOMWindow::postMessageTimerFired):

LayoutTests:

2009-06-21  Drew Wilson  <atwilson@google.com>

        Reviewed by David Levin.

        <https://bugs.webkit.org/show_bug.cgi?id=25043>
        Updated MessageChannel/MessagePorts tests to reflect latest spec (close event has been removed).
        Added more tests of port cloning.

        * fast/events/message-channel-gc-2-expected.txt:
        * fast/events/message-channel-gc-2.html-disabled:
        * fast/events/message-channel-gc-3-expected.txt:
        * fast/events/message-channel-gc-3.html-disabled:
        * fast/events/message-channel-gc-expected.txt:
        * fast/events/message-channel-gc.html-disabled:
        * fast/events/message-port-clone-expected.txt: Added.
        * fast/events/message-port-clone.html-disabled: Added.
        * fast/events/message-port-expected.txt:
        * fast/events/message-port-no-wrapper-expected.txt: Added.
        * fast/events/message-port-onclose-expected.txt: Removed.
        * fast/events/message-port-onclose.html-disabled: Removed.
        * fast/events/message-port.html-disabled:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@44915 268f45cc-cd09-0410-ab3c-d52691b4dbfc