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/*
* Copyright (C) 2019 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. AND ITS 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 APPLE INC. OR ITS 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 "WorkerMessagePortChannelProvider.h"
#include "MessagePort.h"
#include "WorkerOrWorkletGlobalScope.h"
#include "WorkerThread.h"
#include <wtf/MainThread.h>
#include <wtf/RunLoop.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(WorkerMessagePortChannelProvider);
WorkerMessagePortChannelProvider::WorkerMessagePortChannelProvider(WorkerOrWorkletGlobalScope& scope)
: m_scope(scope)
{
}
WorkerMessagePortChannelProvider::~WorkerMessagePortChannelProvider()
{
while (!m_takeAllMessagesCallbacks.isEmpty()) {
auto first = m_takeAllMessagesCallbacks.takeFirst();
first({ }, [] { });
}
}
void WorkerMessagePortChannelProvider::createNewMessagePortChannel(const MessagePortIdentifier& local, const MessagePortIdentifier& remote)
{
callOnMainThread([local, remote] {
MessagePortChannelProvider::singleton().createNewMessagePortChannel(local, remote);
});
}
void WorkerMessagePortChannelProvider::entangleLocalPortInThisProcessToRemote(const MessagePortIdentifier& local, const MessagePortIdentifier& remote)
{
callOnMainThread([local, remote] {
MessagePortChannelProvider::singleton().entangleLocalPortInThisProcessToRemote(local, remote);
});
}
void WorkerMessagePortChannelProvider::messagePortDisentangled(const MessagePortIdentifier& local)
{
callOnMainThread([local] {
MessagePortChannelProvider::singleton().messagePortDisentangled(local);
});
}
void WorkerMessagePortChannelProvider::messagePortClosed(const MessagePortIdentifier&)
{
ASSERT_NOT_REACHED();
}
void WorkerMessagePortChannelProvider::postMessageToRemote(MessageWithMessagePorts&& message, const MessagePortIdentifier& remoteTarget)
{
callOnMainThread([message = WTFMove(message), remoteTarget]() mutable {
MessagePortChannelProvider::singleton().postMessageToRemote(WTFMove(message), remoteTarget);
});
}
class MainThreadCompletionHandler {
public:
explicit MainThreadCompletionHandler(CompletionHandler<void()>&& completionHandler)
: m_completionHandler(WTFMove(completionHandler))
{
}
MainThreadCompletionHandler(MainThreadCompletionHandler&&) = default;
MainThreadCompletionHandler& operator=(MainThreadCompletionHandler&&) = default;
~MainThreadCompletionHandler()
{
if (m_completionHandler)
complete();
}
void complete()
{
callOnMainThread(WTFMove(m_completionHandler));
}
private:
CompletionHandler<void()> m_completionHandler;
};
void WorkerMessagePortChannelProvider::takeAllMessagesForPort(const MessagePortIdentifier& identifier, CompletionHandler<void(Vector<MessageWithMessagePorts>&&, CompletionHandler<void()>&&)>&& callback)
{
uint64_t callbackIdentifier = ++m_lastCallbackIdentifier;
m_takeAllMessagesCallbacks.add(callbackIdentifier, WTFMove(callback));
callOnMainThread([weakThis = WeakPtr { *this }, workerThread = RefPtr { m_scope->workerOrWorkletThread() }, callbackIdentifier, identifier]() mutable {
MessagePortChannelProvider::singleton().takeAllMessagesForPort(identifier, [weakThis = WTFMove(weakThis), workerThread = WTFMove(workerThread), callbackIdentifier](Vector<MessageWithMessagePorts>&& messages, Function<void()>&& completionHandler) mutable {
workerThread->runLoop().postTaskForMode([weakThis = WTFMove(weakThis), callbackIdentifier, messages = WTFMove(messages), completionHandler = MainThreadCompletionHandler(WTFMove(completionHandler))](auto&) mutable {
CheckedPtr checkedThis = weakThis.get();
if (!checkedThis)
return;
checkedThis->m_takeAllMessagesCallbacks.take(callbackIdentifier)(WTFMove(messages), [completionHandler = WTFMove(completionHandler)]() mutable {
completionHandler.complete();
});
}, WorkerRunLoop::defaultMode());
});
});
}
} // namespace WebCore
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