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made handle atomic

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This commit is contained in:
Ilya Doroshenko 2024-08-26 12:41:13 +02:00
parent 746c651391
commit 33bd6c6032
1 changed files with 62 additions and 39 deletions
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101
include/vk_mem_alloc.h
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@ -6077,41 +6077,85 @@ public:
VmaWin32Handle(HANDLE hHandle) noexcept : m_hHandle(hHandle) { }
~VmaWin32Handle() noexcept { if (m_hHandle != VMA_NULL) { ::CloseHandle(m_hHandle); } }
VMA_CLASS_NO_COPY_NO_MOVE(VmaWin32Handle)
public:
VkResult Init(VkDevice device, VkDeviceMemory memory, decltype(&vkGetMemoryWin32HandleKHR) vkGetMemoryWin32HandleKHR) noexcept
// Strengthened
VkResult GetHandle(VkDevice device, VkDeviceMemory memory, decltype(&vkGetMemoryWin32HandleKHR) pvkGetMemoryWin32HandleKHR, HANDLE hTargetProcess, HANDLE* pHandle) noexcept
{
*pHandle = VMA_NULL;
// We only care about atomicity of handle retrieval, not about memory order.
HANDLE handle = m_hHandle.load(std::memory_order_relaxed);
// Try to get handle first.
if (handle != VMA_NULL)
{
*pHandle = Duplicate(hTargetProcess);
return VK_SUCCESS;
}
HANDLE hCreatedHandle = VMA_NULL;
// If failed, try to create it.
VkResult res = Create(device, memory, pvkGetMemoryWin32HandleKHR, &hCreatedHandle);
if (res == VK_SUCCESS)
{
// Successfully created handle, try to set it.
if (!m_hHandle.compare_exchange_strong(handle, hCreatedHandle, std::memory_order_relaxed))
{
// AMD workaround
if (hCreatedHandle != m_hHandle.load(std::memory_order_relaxed))
{
::CloseHandle(hCreatedHandle);
}
}
}
// If somehow it was set in the meantime, return it.
if (m_hHandle.load(std::memory_order_relaxed))
{
*pHandle = Duplicate(hTargetProcess);
return VK_SUCCESS;
}
return res;
}
operator bool() const noexcept { return m_hHandle != VMA_NULL; }
private:
// Not atomic
static VkResult Create(VkDevice device, VkDeviceMemory memory, decltype(&vkGetMemoryWin32HandleKHR) pvkGetMemoryWin32HandleKHR, HANDLE* pHandle) noexcept
{
VkResult res = VK_ERROR_FEATURE_NOT_PRESENT;
if (vkGetMemoryWin32HandleKHR != VMA_NULL)
if (pvkGetMemoryWin32HandleKHR != VMA_NULL)
{
VkMemoryGetWin32HandleInfoKHR handleInfo{ };
handleInfo.sType = VK_STRUCTURE_TYPE_MEMORY_GET_WIN32_HANDLE_INFO_KHR;
handleInfo.memory = memory;
handleInfo.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_KHR;
res = vkGetMemoryWin32HandleKHR(device, &handleInfo, &m_hHandle);
res = pvkGetMemoryWin32HandleKHR(device, &handleInfo, pHandle);
}
return res;
}
HANDLE Duplicate(HANDLE hTargetProcess = VMA_NULL) const noexcept
{
if (!m_hHandle)
return m_hHandle;
HANDLE handle = m_hHandle.load(std::memory_order_relaxed);
if (!handle)
return handle;
HANDLE hCurrentProcess = ::GetCurrentProcess();
HANDLE hDupHandle = VMA_NULL;
if (!::DuplicateHandle(hCurrentProcess, m_hHandle, hTargetProcess ? hTargetProcess : hCurrentProcess, &hDupHandle, 0, FALSE, DUPLICATE_SAME_ACCESS))
if (!::DuplicateHandle(hCurrentProcess, handle, hTargetProcess ? hTargetProcess : hCurrentProcess, &hDupHandle, 0, FALSE, DUPLICATE_SAME_ACCESS))
{
VMA_ASSERT(0 && "Failed to duplicate handle.");
}
return hDupHandle;
}
operator bool() const noexcept { return m_hHandle != VMA_NULL; }
private:
HANDLE m_hHandle;
std::atomic<HANDLE> m_hHandle;
};
#else
class VmaWin32Handle
{
// ABI compatibility
void* placeholder = VMA_NULL;
};
#endif // VK_USE_PLATFORM_WIN32_KHR
@ -6186,6 +6230,7 @@ public:
#ifdef VK_USE_PLATFORM_WIN32_KHR
VkResult CreateWin32Handle(
const VmaAllocator hAllocator,
decltype(&vkGetMemoryWin32HandleKHR) pvkGetMemoryWin32HandleKHR,
HANDLE hTargetProcess,
HANDLE* pHandle)noexcept;
#endif // VK_USE_PLATFORM_WIN32_KHR
@ -6310,7 +6355,7 @@ private:
void* m_pMappedData; // Not null means memory is mapped.
VmaAllocation_T* m_Prev;
VmaAllocation_T* m_Next;
VmaWin32Handle m_Handle; // Win32 handle
mutable VmaWin32Handle m_Handle; // Win32 handle
};
union
{
@ -10740,34 +10785,10 @@ VkResult VmaDeviceMemoryBlock::BindImageMemory(
}
#ifdef VK_USE_PLATFORM_WIN32_KHR
VkResult VmaDeviceMemoryBlock::CreateWin32Handle(const VmaAllocator hAllocator, HANDLE hTargetProcess, HANDLE* pHandle) noexcept
VkResult VmaDeviceMemoryBlock::CreateWin32Handle(const VmaAllocator hAllocator, decltype(&vkGetMemoryWin32HandleKHR) pvkGetMemoryWin32HandleKHR, HANDLE hTargetProcess, HANDLE* pHandle) noexcept
{
VMA_ASSERT(pHandle);
*pHandle = VMA_NULL;
// relieves the mutex
if (m_Handle)
{
*pHandle = m_Handle.Duplicate(hTargetProcess);
return VK_SUCCESS;
}
VmaMutexLock lock(m_MapAndBindMutex, hAllocator->m_UseMutex);
if (m_Handle)
{
*pHandle = m_Handle.Duplicate(hTargetProcess);
return VK_SUCCESS;
}
// Do we pass the function manually or use the one from the allocator?
VkResult res = m_Handle.Init(hAllocator->m_hDevice, m_hMemory, &vkGetMemoryWin32HandleKHR);
if (res != VK_SUCCESS)
{
return res;
}
*pHandle = m_Handle.Duplicate(hTargetProcess);
return VK_SUCCESS;
return m_Handle.GetHandle(hAllocator->m_hDevice, m_hMemory, &vkGetMemoryWin32HandleKHR, hTargetProcess, pHandle);
}
#endif // VK_USE_PLATFORM_WIN32_KHR
#endif // _VMA_DEVICE_MEMORY_BLOCK_FUNCTIONS
@ -11071,14 +11092,16 @@ void VmaAllocation_T::PrintParameters(class VmaJsonWriter& json) const
}
}
#ifdef VK_USE_PLATFORM_WIN32_KHR
inline VkResult VmaAllocation_T::GetWin32Handle(VmaAllocator hAllocator, HANDLE hTargetProcess, HANDLE* pHandle) const noexcept
VkResult VmaAllocation_T::GetWin32Handle(VmaAllocator hAllocator, HANDLE hTargetProcess, HANDLE* pHandle) const noexcept
{
// Where do we get this function from?
auto pvkGetMemoryWin32HandleKHR = &vkGetMemoryWin32HandleKHR;
switch (m_Type)
{
case ALLOCATION_TYPE_BLOCK:
return m_BlockAllocation.m_Block->CreateWin32Handle(hAllocator, hTargetProcess, pHandle);
return m_BlockAllocation.m_Block->CreateWin32Handle(hAllocator, pvkGetMemoryWin32HandleKHR, hTargetProcess, pHandle);
case ALLOCATION_TYPE_DEDICATED:
// return m_DedicatedAllocation.m_hMemory;
return m_DedicatedAllocation.m_Handle.GetHandle(hAllocator->m_hDevice, m_DedicatedAllocation.m_hMemory, pvkGetMemoryWin32HandleKHR, hTargetProcess, pHandle);
default:
VMA_ASSERT(0);
return VK_ERROR_FEATURE_NOT_PRESENT;