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/* Copyright (c) 2019-2025 The Khronos Group Inc.
* Copyright (c) 2019-2025 Valve Corporation
* Copyright (c) 2019-2025 LunarG, Inc.
* Modifications Copyright (C) 2022 RasterGrid Kft.
*
* 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.
*/
#pragma once
#include <memory>
#include <shared_mutex>
#include <vulkan/utility/vk_concurrent_unordered_map.hpp>
// Aliases to avoid excessive typing. We can't easily auto these away because
// there are virtual methods in vvl::base::Device which return lock guards
// and those cannot use return type deduction.
typedef std::shared_lock<std::shared_mutex> ReadLockGuard;
typedef std::unique_lock<std::shared_mutex> WriteLockGuard;
// helper class for the very common case of getting and then locking a command buffer (or other state object)
template <typename T, typename Guard>
class LockedSharedPtr : public std::shared_ptr<T> {
public:
LockedSharedPtr(std::shared_ptr<T> &&ptr, Guard &&guard) : std::shared_ptr<T>(std::move(ptr)), guard_(std::move(guard)) {}
LockedSharedPtr() : std::shared_ptr<T>(), guard_() {}
private:
Guard guard_;
};
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