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// Copyright 2018 The SwiftShader Authors. All Rights Reserved.
//
// 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.
#ifndef VK_EVENT_HPP_
#define VK_EVENT_HPP_
#include "VkObject.hpp"
#include <condition_variable>
#include <mutex>
namespace vk {
class Event : public Object<Event, VkEvent>
{
public:
Event(const VkEventCreateInfo *pCreateInfo, void *mem)
{
}
static size_t ComputeRequiredAllocationSize(const VkEventCreateInfo *pCreateInfo)
{
return 0;
}
void signal()
{
std::unique_lock<std::mutex> lock(mutex);
status = VK_EVENT_SET;
lock.unlock();
condition.notify_all();
}
void reset()
{
std::unique_lock<std::mutex> lock(mutex);
status = VK_EVENT_RESET;
}
VkResult getStatus()
{
std::unique_lock<std::mutex> lock(mutex);
auto result = status;
lock.unlock();
return result;
}
void wait()
{
std::unique_lock<std::mutex> lock(mutex);
condition.wait(lock, [this] { return status == VK_EVENT_SET; });
}
private:
VkResult status = VK_EVENT_RESET; // guarded by mutex
std::mutex mutex;
std::condition_variable condition;
};
static inline Event *Cast(VkEvent object)
{
return Event::Cast(object);
}
} // namespace vk
#endif // VK_EVENT_HPP_