Source/WebKit/WebProcess/WebPage/wpe/CompositingManager.cpp

/*
 * Copyright (C) 2015 Igalia S.L.
 *
 * 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 "CompositingManager.h"

#include "CompositingManagerProxyMessages.h"
#include "WebPage.h"

namespace WebKit {

CompositingManager::~CompositingManager()
{
    ASSERT(!m_connectionFd);
}

void CompositingManager::establishConnection(WebPage& webPage)
{
    IPC::Attachment connectionHandle;
    webPage.sendSync(Messages::CompositingManagerProxy::EstablishConnection(),
        Messages::CompositingManagerProxy::EstablishConnection::Reply(connectionHandle));

    m_connectionFd = connectionHandle.releaseFileDescriptor();
}

int CompositingManager::releaseConnectionFd()
{
    int fd = m_connectionFd.value_or(-1);
    m_connectionFd = std::nullopt;
    return fd;
}

} // namespace WebKit