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/*
* Copyright (C) 2021 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 "ProcessQualified.h"
#include <wtf/Forward.h>
#include <wtf/UUID.h>
namespace WebCore {
template <>
class ProcessQualified<WTF::UUID> {
public:
static ProcessQualified generate() { return { WTF::UUID::createVersion4Weak(), Process::identifier() }; }
ProcessQualified(WTF::UUID object, ProcessIdentifier processIdentifier)
: m_object(WTFMove(object))
, m_processIdentifier(processIdentifier)
{
}
ProcessQualified(WTF::HashTableDeletedValueType)
: m_object(WTF::HashTableDeletedValue)
, m_processIdentifier(WTF::HashTableDeletedValue)
{
}
operator bool() const { return !!m_object; }
const WTF::UUID& object() const { return m_object; }
ProcessIdentifier processIdentifier() const { return m_processIdentifier; }
bool isHashTableDeletedValue() const { return m_processIdentifier.isHashTableDeletedValue(); }
friend bool operator==(const ProcessQualified&, const ProcessQualified&) = default;
String toString() const { return m_object.toString(); }
template<typename Encoder> void encode(Encoder& encoder) const { encoder << m_object << m_processIdentifier; }
template<typename Decoder> static std::optional<ProcessQualified> decode(Decoder&);
struct MarkableTraits {
static bool isEmptyValue(const ProcessQualified<WTF::UUID>& identifier) { return WTF::UUID::MarkableTraits::isEmptyValue(identifier.object()); }
static ProcessQualified<WTF::UUID> emptyValue() { return { WTF::UUID::MarkableTraits::emptyValue(), ProcessIdentifier::MarkableTraits::emptyValue() }; }
};
private:
WTF::UUID m_object;
ProcessIdentifier m_processIdentifier;
};
inline void add(Hasher& hasher, const ProcessQualified<WTF::UUID>& uuid)
{
// Since UUIDs are unique on their own, optimize by not hashing the process identifier.
add(hasher, uuid.object());
}
template<typename Decoder> std::optional<ProcessQualified<WTF::UUID>> ProcessQualified<WTF::UUID>::decode(Decoder& decoder)
{
std::optional<WTF::UUID> object;
decoder >> object;
if (!object)
return std::nullopt;
std::optional<ProcessIdentifier> processIdentifier;
decoder >> processIdentifier;
if (!processIdentifier)
return std::nullopt;
return { { *object, *processIdentifier } };
}
template <>
inline TextStream& operator<<(TextStream& ts, const ProcessQualified<WTF::UUID>& processQualified)
{
ts << "ProcessQualified(" << processQualified.processIdentifier().toUInt64() << '-' << processQualified.object().toString() << ')';
return ts;
}
using ScriptExecutionContextIdentifier = ProcessQualified<WTF::UUID>;
}
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