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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_SEMAPHORE_HPP_
#define VK_SEMAPHORE_HPP_
#include "VkConfig.h"
#include "VkObject.hpp"
#include "marl/event.h"
#include <mutex>
#if VK_USE_PLATFORM_FUCHSIA
# include <zircon/types.h>
#endif
namespace vk {
class Semaphore : public Object<Semaphore, VkSemaphore>
{
public:
Semaphore(const VkSemaphoreCreateInfo *pCreateInfo, void *mem, const VkAllocationCallbacks *pAllocator);
void destroy(const VkAllocationCallbacks *pAllocator);
static size_t ComputeRequiredAllocationSize(const VkSemaphoreCreateInfo *pCreateInfo);
void wait();
void wait(const VkPipelineStageFlags &flag)
{
// NOTE: not sure what else to do here?
wait();
}
void signal();
#if SWIFTSHADER_EXTERNAL_SEMAPHORE_OPAQUE_FD
VkResult importFd(int fd, bool temporaryImport);
VkResult exportFd(int *pFd);
#endif
#if VK_USE_PLATFORM_FUCHSIA
VkResult importHandle(zx_handle_t handle, bool temporaryImport);
VkResult exportHandle(zx_handle_t *pHandle);
#endif
class External;
private:
void allocateExternal();
void deallocateExternal();
const VkAllocationCallbacks *allocator = nullptr;
marl::Event internal;
std::mutex mutex;
External *external = nullptr;
bool temporaryImport = false;
};
static inline Semaphore *Cast(VkSemaphore object)
{
return Semaphore::Cast(object);
}
} // namespace vk
#endif // VK_SEMAPHORE_HPP_