111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
/*
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* Copyright (C) 2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ProcessIdentifier.h"
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#include <wtf/Hasher.h>
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#include <wtf/text/StringConcatenateNumbers.h>
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namespace WebCore {
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struct MessagePortIdentifier {
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ProcessIdentifier processIdentifier;
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enum PortIdentifierType { };
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ObjectIdentifier<PortIdentifierType> portIdentifier;
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unsigned hash() const;
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template<class Encoder> void encode(Encoder&) const;
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template<class Decoder> static std::optional<MessagePortIdentifier> decode(Decoder&);
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#if !LOG_DISABLED
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String logString() const;
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#endif
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};
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inline bool operator==(const MessagePortIdentifier& a, const MessagePortIdentifier& b)
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{
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return a.processIdentifier == b.processIdentifier && a.portIdentifier == b.portIdentifier;
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}
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template<class Encoder>
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void MessagePortIdentifier::encode(Encoder& encoder) const
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{
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encoder << processIdentifier << portIdentifier;
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}
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template<class Decoder>
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std::optional<MessagePortIdentifier> MessagePortIdentifier::decode(Decoder& decoder)
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{
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std::optional<ProcessIdentifier> processIdentifier;
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decoder >> processIdentifier;
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if (!processIdentifier)
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return std::nullopt;
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std::optional<ObjectIdentifier<PortIdentifierType>> portIdentifier;
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decoder >> portIdentifier;
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if (!portIdentifier)
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return std::nullopt;
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return { { WTFMove(*processIdentifier), WTFMove(*portIdentifier) } };
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}
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inline unsigned MessagePortIdentifier::hash() const
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{
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return computeHash(processIdentifier.toUInt64(), portIdentifier.toUInt64());
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}
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#if !LOG_DISABLED
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inline String MessagePortIdentifier::logString() const
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{
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return makeString(processIdentifier.toUInt64(), '-', portIdentifier.toUInt64());
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}
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#endif
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} // namespace WebCore
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namespace WTF {
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struct MessagePortIdentifierHash {
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static unsigned hash(const WebCore::MessagePortIdentifier& key) { return key.hash(); }
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static bool equal(const WebCore::MessagePortIdentifier& a, const WebCore::MessagePortIdentifier& b) { return a == b; }
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static const bool safeToCompareToEmptyOrDeleted = true;
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};
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template<> struct HashTraits<WebCore::MessagePortIdentifier> : GenericHashTraits<WebCore::MessagePortIdentifier> {
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static WebCore::MessagePortIdentifier emptyValue() { return { }; }
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static void constructDeletedValue(WebCore::MessagePortIdentifier& slot) { new (NotNull, &slot.processIdentifier) WebCore::ProcessIdentifier(WTF::HashTableDeletedValue); }
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static bool isDeletedValue(const WebCore::MessagePortIdentifier& slot) { return slot.processIdentifier.isHashTableDeletedValue(); }
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};
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template<> struct DefaultHash<WebCore::MessagePortIdentifier> : MessagePortIdentifierHash { };
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} // namespace WTF
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