/* * Copyright (C) 2010, 2014 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. ``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 * 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. */ #ifndef DisplayRefreshMonitorManager_h #define DisplayRefreshMonitorManager_h #if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) #include "DisplayRefreshMonitor.h" #include "PlatformScreen.h" #include <wtf/HashMap.h> #include <wtf/NeverDestroyed.h> #include <wtf/RefPtr.h> namespace WebCore { class DisplayRefreshMonitorManager { friend class NeverDestroyed<DisplayRefreshMonitorManager>; public: static DisplayRefreshMonitorManager& sharedManager(); void registerClient(DisplayRefreshMonitorClient*); void unregisterClient(DisplayRefreshMonitorClient*); bool scheduleAnimation(DisplayRefreshMonitorClient*); void windowScreenDidChange(PlatformDisplayID, DisplayRefreshMonitorClient*); private: friend class DisplayRefreshMonitor; void displayDidRefresh(DisplayRefreshMonitor*); DisplayRefreshMonitorManager() { } virtual ~DisplayRefreshMonitorManager(); DisplayRefreshMonitor* ensureMonitorForClient(DisplayRefreshMonitorClient*); // We know nothing about the values of PlatformDisplayIDs, so use UnsignedWithZeroKeyHashTraits. // FIXME: Since we know nothing about these values, this is not sufficient. // Even with UnsignedWithZeroKeyHashTraits, there are still two special values used for empty and deleted hash table slots. typedef HashMap<uint64_t, RefPtr<DisplayRefreshMonitor>, WTF::IntHash<uint64_t>, WTF::UnsignedWithZeroKeyHashTraits<uint64_t>> DisplayRefreshMonitorMap; DisplayRefreshMonitorMap m_monitors; }; } #endif // USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR) #endif