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/*
* Copyright (C) 2021 Sony Interactive Entertainment Inc.
*
* 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.
*/
#pragma once
#if USE(GRAPHICS_LAYER_WC)
#include "WCSceneContext.h"
#include <wtf/HashMap.h>
#include <wtf/RefPtr.h>
namespace WebKit {
// Creating a WCSceneContext for a window fails if the window already
// has one. While navigating to a new page with a new WebProcess, the
// provisional WebKit::WebPage in the new WebProcess has the same
// window handle. WCSceneContext should be shared among all
// RemoteWCLayerTreeHosts that render to the same native window.
class WCSharedSceneContextHolder {
WTF_MAKE_NONCOPYABLE(WCSharedSceneContextHolder);
public:
WCSharedSceneContextHolder() = default;
struct Holder : RefCounted<Holder> {
WTF_MAKE_STRUCT_FAST_ALLOCATED;
int64_t nativeWindow;
// The following member is accessed in the OpenGL thread
std::optional<WCSceneContext> context;
};
Ref<Holder> ensureHolderForWindow(int64_t nativeWindow)
{
ASSERT(RunLoop::isMain());
auto result = m_hash.add(nativeWindow, nullptr);
if (!result.isNewEntry)
return *result.iterator->value;
auto holder = adoptRef(*new Holder);
holder->nativeWindow = nativeWindow;
result.iterator->value = holder.ptr();
return holder;
}
RefPtr<Holder> removeHolder(Ref<Holder>&& holder)
{
ASSERT(RunLoop::isMain());
if (!holder->hasOneRef())
return nullptr;
m_hash.remove(holder->nativeWindow);
return holder;
}
private:
HashMap<int64_t, Holder*> m_hash;
};
} // namespace WebKit
#endif // USE(GRAPHICS_LAYER_WC)
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