Source/WebKit/NetworkProcess/storage/StorageAreaBase.cpp

/*
 * Copyright (C) 2013-2021 Apple Inc. All rights reserved.
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#include "config.h"
#include "StorageAreaBase.h"

#include "StorageAreaMapMessages.h"

namespace WebKit {

uint64_t StorageAreaBase::nextMessageIdentifier()
{
    static std::atomic<uint64_t> currentIdentifier;
    return ++currentIdentifier;
}

StorageAreaBase::StorageAreaBase(unsigned quota, const WebCore::ClientOrigin& origin)
    : m_identifier(StorageAreaIdentifier::generateThreadSafe())
    , m_quota(quota)
    , m_origin(origin)
{
}

StorageAreaBase::~StorageAreaBase() = default;

void StorageAreaBase::addListener(IPC::Connection::UniqueID connection, StorageAreaMapIdentifier identifier)
{
    ASSERT(!m_listeners.contains(connection) || m_listeners.get(connection) == identifier);

    m_listeners.add(connection, identifier);
}

void StorageAreaBase::removeListener(IPC::Connection::UniqueID connection)
{
    m_listeners.remove(connection);
}

bool StorageAreaBase::hasListeners() const
{
    return !m_listeners.isEmpty();
}

void StorageAreaBase::notifyListenersAboutClear()
{
    for (auto& listener : m_listeners)
        IPC::Connection::send(listener.key, Messages::StorageAreaMap::ClearCache(StorageAreaBase::nextMessageIdentifier()), listener.value.toUInt64());
}

void StorageAreaBase::dispatchEvents(IPC::Connection::UniqueID sourceConnection, StorageAreaImplIdentifier sourceImplIdentifier, const String& key, const String& oldValue, const String& newValue, const String& urlString) const
{
    ASSERT(sourceImplIdentifier);

    for (auto& listener : m_listeners) {
        std::optional<StorageAreaImplIdentifier> implIdentifier;
        if (listener.key == sourceConnection)
            implIdentifier = sourceImplIdentifier;
        IPC::Connection::send(listener.key, Messages::StorageAreaMap::DispatchStorageEvent(implIdentifier, key, oldValue, newValue, urlString, StorageAreaBase::nextMessageIdentifier()), listener.value.toUInt64());
    }
}

} // namespace WebKit