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/*
* Copyright (C) 2015 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 "IDBResourceIdentifier.h"
#if ENABLE(INDEXED_DATABASE)
#include "IDBConnectionToClient.h"
#include "IDBConnectionToServer.h"
#include "IDBRequestImpl.h"
#include <wtf/MainThread.h>
namespace WebCore {
static uint64_t nextClientResourceNumber()
{
ASSERT(isMainThread());
static uint64_t currentNumber = 1;
return currentNumber += 2;
}
static uint64_t nextServerResourceNumber()
{
ASSERT(isMainThread());
static uint64_t currentNumber = 0;
return currentNumber += 2;
}
IDBResourceIdentifier::IDBResourceIdentifier()
{
}
IDBResourceIdentifier::IDBResourceIdentifier(uint64_t connectionIdentifier, uint64_t resourceIdentifier)
: m_idbConnectionIdentifier(connectionIdentifier)
, m_resourceNumber(resourceIdentifier)
{
}
IDBResourceIdentifier::IDBResourceIdentifier(const IDBClient::IDBConnectionToServer& connection)
: m_idbConnectionIdentifier(connection.identifier())
, m_resourceNumber(nextClientResourceNumber())
{
}
IDBResourceIdentifier::IDBResourceIdentifier(const IDBClient::IDBConnectionToServer& connection, const IDBClient::IDBRequest& request)
: m_idbConnectionIdentifier(connection.identifier())
, m_resourceNumber(request.resourceIdentifier().m_resourceNumber)
{
}
IDBResourceIdentifier::IDBResourceIdentifier(const IDBServer::IDBConnectionToClient& connection)
: m_idbConnectionIdentifier(connection.identifier())
, m_resourceNumber(nextServerResourceNumber())
{
}
IDBResourceIdentifier IDBResourceIdentifier::isolatedCopy() const
{
return IDBResourceIdentifier(m_idbConnectionIdentifier, m_resourceNumber);
}
IDBResourceIdentifier IDBResourceIdentifier::emptyValue()
{
return IDBResourceIdentifier(0, 0);
}
IDBResourceIdentifier IDBResourceIdentifier::deletedValue()
{
return IDBResourceIdentifier(std::numeric_limits<uint64_t>::max(), std::numeric_limits<uint64_t>::max());
}
bool IDBResourceIdentifier::isHashTableDeletedValue() const
{
return m_idbConnectionIdentifier == std::numeric_limits<uint64_t>::max()
&& m_resourceNumber == std::numeric_limits<uint64_t>::max();
}
#ifndef NDEBUG
String IDBResourceIdentifier::loggingString() const
{
return String::format("<%" PRIu64", %" PRIu64">", m_idbConnectionIdentifier, m_resourceNumber);
}
#endif
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
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