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/*
* Copyright (C) 2018 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.
*/
#pragma once
#include "MessagePortChannelProvider.h"
#include "MessagePortIdentifier.h"
#include "MessageWithMessagePorts.h"
#include "ProcessIdentifier.h"
#include <wtf/HashSet.h>
#include <wtf/RefCountedAndCanMakeWeakPtr.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/MakeString.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class MessagePortChannelRegistry;
class MessagePortChannel : public RefCountedAndCanMakeWeakPtr<MessagePortChannel> {
public:
static Ref<MessagePortChannel> create(MessagePortChannelRegistry&, const MessagePortIdentifier& port1, const MessagePortIdentifier& port2);
WEBCORE_EXPORT ~MessagePortChannel();
const MessagePortIdentifier& port1() const { return m_ports[0]; }
const MessagePortIdentifier& port2() const { return m_ports[1]; }
WEBCORE_EXPORT std::optional<ProcessIdentifier> processForPort(const MessagePortIdentifier&);
bool includesPort(const MessagePortIdentifier&);
void entanglePortWithProcess(const MessagePortIdentifier&, ProcessIdentifier);
void disentanglePort(const MessagePortIdentifier&);
void closePort(const MessagePortIdentifier&);
bool postMessageToRemote(MessageWithMessagePorts&&, const MessagePortIdentifier& remoteTarget);
void takeAllMessagesForPort(const MessagePortIdentifier&, CompletionHandler<void(Vector<MessageWithMessagePorts>&&, CompletionHandler<void()>&&)>&&);
WEBCORE_EXPORT bool hasAnyMessagesPendingOrInFlight() const;
uint64_t beingTransferredCount();
#if !LOG_DISABLED
String logString() const { return makeString(m_ports[0].logString(), ':', m_ports[1].logString()); }
#endif
private:
MessagePortChannel(MessagePortChannelRegistry&, const MessagePortIdentifier& port1, const MessagePortIdentifier& port2);
CheckedRef<MessagePortChannelRegistry> checkedRegistry() const;
std::array<MessagePortIdentifier, 2> m_ports;
std::array<bool, 2> m_isClosed { false, false };
std::array<std::optional<ProcessIdentifier>, 2> m_processes;
std::array<RefPtr<MessagePortChannel>, 2> m_entangledToProcessProtectors;
std::array<Vector<MessageWithMessagePorts>, 2> m_pendingMessages;
std::array<UncheckedKeyHashSet<RefPtr<MessagePortChannel>>, 2> m_pendingMessagePortTransfers;
std::array<RefPtr<MessagePortChannel>, 2> m_pendingMessageProtectors;
uint64_t m_messageBatchesInFlight { 0 };
CheckedRef<MessagePortChannelRegistry> m_registry;
};
} // namespace WebCore
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