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/*
* Copyright 2019-2021 Diligent Graphics LLC
* Copyright 2015-2019 Egor Yusov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#pragma once
/// \file
/// Declaration of Diligent::FenceVkImpl class
#include <deque>
#include <atomic>
#include "EngineVkImplTraits.hpp"
#include "FenceBase.hpp"
#include "VulkanUtilities/VulkanFencePool.hpp"
namespace Diligent
{
/// Fence implementation in Vulkan backend.
class FenceVkImpl final : public FenceBase<EngineVkImplTraits>
{
public:
using TFenceBase = FenceBase<EngineVkImplTraits>;
FenceVkImpl(IReferenceCounters* pRefCounters,
RenderDeviceVkImpl* pRendeDeviceVkImpl,
const FenceDesc& Desc,
bool IsDeviceInternal = false);
~FenceVkImpl();
IMPLEMENT_QUERY_INTERFACE_IN_PLACE(IID_FenceVk, TFenceBase)
/// Implementation of IFence::GetCompletedValue() in Vulkan backend.
/// Note that this method is not thread-safe. The reason is that VulkanFencePool is not thread
/// safe, and DeviceContextVkImpl::SignalFence() adds the fence to the pending fences list that
/// are signaled later by the command context when it submits the command list. So there is no
/// guarantee that the fence pool is not accessed simultaneously by multiple threads even if the
/// fence object itself is protected by mutex.
virtual Uint64 DILIGENT_CALL_TYPE GetCompletedValue() override final;
/// Implementation of IFence::Reset() in Vulkan backend.
virtual void DILIGENT_CALL_TYPE Reset(Uint64 Value) override final;
VulkanUtilities::FenceWrapper GetVkFence() { return m_FencePool.GetFence(); }
void AddPendingFence(VulkanUtilities::FenceWrapper&& vkFence, Uint64 FenceValue)
{
m_PendingFences.emplace_back(FenceValue, std::move(vkFence));
}
void Wait(Uint64 Value);
private:
VulkanUtilities::VulkanFencePool m_FencePool;
std::deque<std::pair<Uint64, VulkanUtilities::FenceWrapper>> m_PendingFences;
};
} // namespace Diligent
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