MessagePortIdentifier.h [plain text]
#pragma once
#include "Process.h"
#include <wtf/Hasher.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
struct MessagePortIdentifier {
ProcessIdentifier processIdentifier;
enum PortIdentifierType { };
ObjectIdentifier<PortIdentifierType> portIdentifier;
unsigned hash() const;
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static Optional<MessagePortIdentifier> decode(Decoder&);
#if !LOG_DISABLED
String logString() const;
#endif
};
inline bool operator==(const MessagePortIdentifier& a, const MessagePortIdentifier& b)
{
return a.processIdentifier == b.processIdentifier && a.portIdentifier == b.portIdentifier;
}
template<class Encoder>
void MessagePortIdentifier::encode(Encoder& encoder) const
{
encoder << processIdentifier << portIdentifier;
}
template<class Decoder>
Optional<MessagePortIdentifier> MessagePortIdentifier::decode(Decoder& decoder)
{
Optional<ProcessIdentifier> processIdentifier;
decoder >> processIdentifier;
if (!processIdentifier)
return WTF::nullopt;
Optional<ObjectIdentifier<PortIdentifierType>> portIdentifier;
decoder >> portIdentifier;
if (!portIdentifier)
return WTF::nullopt;
return { { WTFMove(*processIdentifier), WTFMove(*portIdentifier) } };
}
inline unsigned MessagePortIdentifier::hash() const
{
return computeHash(processIdentifier.toUInt64(), portIdentifier.toUInt64());
}
#if !LOG_DISABLED
inline String MessagePortIdentifier::logString() const
{
return makeString(String::number(processIdentifier.toUInt64()), "-", String::number(portIdentifier.toUInt64()));
}
#endif
}
namespace WTF {
struct MessagePortIdentifierHash {
static unsigned hash(const WebCore::MessagePortIdentifier& key) { return key.hash(); }
static bool equal(const WebCore::MessagePortIdentifier& a, const WebCore::MessagePortIdentifier& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = true;
};
template<> struct HashTraits<WebCore::MessagePortIdentifier> : GenericHashTraits<WebCore::MessagePortIdentifier> {
static WebCore::MessagePortIdentifier emptyValue() { return { }; }
static void constructDeletedValue(WebCore::MessagePortIdentifier& slot) { slot.processIdentifier = makeObjectIdentifier<WebCore::ProcessIdentifierType>(std::numeric_limits<uint64_t>::max()); }
static bool isDeletedValue(const WebCore::MessagePortIdentifier& slot) { return slot.processIdentifier.toUInt64() == std::numeric_limits<uint64_t>::max(); }
};
template<> struct DefaultHash<WebCore::MessagePortIdentifier> {
typedef MessagePortIdentifierHash Hash;
};
}