mirror/VulkanMemoryAllocator
1
0
Fork 0
mirror of https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.git synced 2024-11-26 08:34:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

Internal improvement: Added counting total number of VkDeviceMemory blocks.

Browse Source 
Fixed case of spamming dedicated allocations instead of bigger blocks and thus and exceeding maxMemoryAllocationCount when heap size/budget is reached or exceeded.

Added debug macro VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT.
This commit is contained in:
Adam Sawicki 2021-02-19 18:00:05 +01:00
parent 1635a1a0a3
commit ae0b011e7a
1 changed files with 79 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

105
src/vk_mem_alloc.h
View File

@ -4409,6 +4409,14 @@ If providing your own implementation, you need to implement a subset of std::ato
#define VMA_DEBUG_MIN_BUFFER_IMAGE_GRANULARITY (1)
#endif
#ifndef VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT
/*
Set this to 1 to make VMA never exceed VkPhysicalDeviceLimits::maxMemoryAllocationCount
and return error instead of leaving up to Vulkan implementation what to do in such cases.
*/
#define VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT (0)
#endif
#ifndef VMA_SMALL_HEAP_MAX_SIZE
/// Maximum size of a memory heap in Vulkan to consider it "small".
#define VMA_SMALL_HEAP_MAX_SIZE (1024ull * 1024 * 1024)
@ -7919,6 +7927,7 @@ public:
VMA_RW_MUTEX m_DedicatedAllocationsMutex[VK_MAX_MEMORY_TYPES];
VmaCurrentBudgetData m_Budget;
VMA_ATOMIC_UINT32 m_DeviceMemoryCount; // Total number of VkDeviceMemory objects.
VmaAllocator_T(const VmaAllocatorCreateInfo* pCreateInfo);
VkResult Init(const VmaAllocatorCreateInfo* pCreateInfo);
@ -15729,6 +15738,7 @@ VmaAllocator_T::VmaAllocator_T(const VmaAllocatorCreateInfo* pCreateInfo) :
*pCreateInfo->pAllocationCallbacks : VmaEmptyAllocationCallbacks),
m_AllocationObjectAllocator(&m_AllocationCallbacks),
m_HeapSizeLimitMask(0),
m_DeviceMemoryCount(0),
m_PreferredLargeHeapBlockSize(0),
m_PhysicalDevice(pCreateInfo->physicalDevice),
m_CurrentFrameIndex(0),
@ -16244,34 +16254,40 @@ VkResult VmaAllocator_T::AllocateMemoryOfType(
{
return VK_ERROR_OUT_OF_DEVICE_MEMORY;
}
// Protection against creating each allocation as dedicated when we reach or exceed heap size/budget,
// which can quickly deplete maxMemoryAllocationCount: Don't try dedicated allocations when above
// 3/4 of the maximum allocation count.
if(m_DeviceMemoryCount.load() > m_PhysicalDeviceProperties.limits.maxMemoryAllocationCount * 3 / 4)
{
return VK_ERROR_OUT_OF_DEVICE_MEMORY;
}
res = AllocateDedicatedMemory(
size,
suballocType,
memTypeIndex,
(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_WITHIN_BUDGET_BIT) != 0,
(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_MAPPED_BIT) != 0,
(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_USER_DATA_COPY_STRING_BIT) != 0,
finalCreateInfo.pUserData,
finalCreateInfo.priority,
dedicatedBuffer,
dedicatedBufferUsage,
dedicatedImage,
allocationCount,
pAllocations);
if(res == VK_SUCCESS)
{
// Succeeded: AllocateDedicatedMemory function already filld pMemory, nothing more to do here.
VMA_DEBUG_LOG(" Allocated as DedicatedMemory");
return VK_SUCCESS;
}
else
{
res = AllocateDedicatedMemory(
size,
suballocType,
memTypeIndex,
(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_WITHIN_BUDGET_BIT) != 0,
(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_MAPPED_BIT) != 0,
(finalCreateInfo.flags & VMA_ALLOCATION_CREATE_USER_DATA_COPY_STRING_BIT) != 0,
finalCreateInfo.pUserData,
finalCreateInfo.priority,
dedicatedBuffer,
dedicatedBufferUsage,
dedicatedImage,
allocationCount,
pAllocations);
if(res == VK_SUCCESS)
{
// Succeeded: AllocateDedicatedMemory function already filld pMemory, nothing more to do here.
VMA_DEBUG_LOG(" Allocated as DedicatedMemory");
return VK_SUCCESS;
}
else
{
// Everything failed: Return error code.
VMA_DEBUG_LOG(" vkAllocateMemory FAILED");
return res;
}
// Everything failed: Return error code.
VMA_DEBUG_LOG(" vkAllocateMemory FAILED");
return res;
}
}
}
@ -17177,8 +17193,41 @@ void VmaAllocator_T::CreateLostAllocation(VmaAllocation* pAllocation)
(*pAllocation)->InitLost();
}
// An object that increments given atomic but decrements it back in the destructor unless Commit() is called.
template<typename AtomicT>
struct AtomicTransactionalIncrement
{
public:
~AtomicTransactionalIncrement()
{
if(m_Atomic)
--(*m_Atomic);
}
typename AtomicT::value_type Increment(AtomicT* atomic)
{
m_Atomic = atomic;
return m_Atomic->fetch_add(1);
}
void Commit()
{
m_Atomic = nullptr;
}
private:
AtomicT* m_Atomic = nullptr;
};
VkResult VmaAllocator_T::AllocateVulkanMemory(const VkMemoryAllocateInfo* pAllocateInfo, VkDeviceMemory* pMemory)
{
AtomicTransactionalIncrement<VMA_ATOMIC_UINT32> deviceMemoryCountIncrement;
const uint64_t prevDeviceMemoryCount = deviceMemoryCountIncrement.Increment(&m_DeviceMemoryCount);
#if VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT
if(prevDeviceMemoryCount >= m_PhysicalDeviceProperties.limits.maxMemoryAllocationCount)
{
return VK_ERROR_TOO_MANY_OBJECTS;
}
#endif
const uint32_t heapIndex = MemoryTypeIndexToHeapIndex(pAllocateInfo->memoryTypeIndex);
// HeapSizeLimit is in effect for this heap.
@ -17218,6 +17267,8 @@ VkResult VmaAllocator_T::AllocateVulkanMemory(const VkMemoryAllocateInfo* pAlloc
{
(*m_DeviceMemoryCallbacks.pfnAllocate)(this, pAllocateInfo->memoryTypeIndex, *pMemory, pAllocateInfo->allocationSize, m_DeviceMemoryCallbacks.pUserData);
}
deviceMemoryCountIncrement.Commit();
}
else
{
@ -17239,6 +17290,8 @@ void VmaAllocator_T::FreeVulkanMemory(uint32_t memoryType, VkDeviceSize size, Vk
(*m_VulkanFunctions.vkFreeMemory)(m_hDevice, hMemory, GetAllocationCallbacks());
m_Budget.m_BlockBytes[MemoryTypeIndexToHeapIndex(memoryType)] -= size;
--m_DeviceMemoryCount;
}
VkResult VmaAllocator_T::BindVulkanBuffer(