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Some code in preparation to implement double stack (SECOND_VECTOR_DOUBLE_STACK).

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This commit is contained in:
Adam Sawicki 2018-08-22 13:21:08 +02:00
parent 0c6ca87695
commit 45cee6ee4f
1 changed files with 362 additions and 23 deletions
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385
src/vk_mem_alloc.h
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@ -4536,8 +4536,87 @@ private:
void UnregisterFreeSuballocation(VmaSuballocationList::iterator item);
};
/*
Allocations and their references in internal data structure look like this:
if(m_2ndVectorMode == SECOND_VECTOR_EMPTY):
0 +-------+
| |
| |
| |
+-------+
| Alloc | 1st[m_1stNullItemsBeginCount]
+-------+
| Alloc | 1st[m_1stNullItemsBeginCount + 1]
+-------+
| ... |
+-------+
| Alloc | 1st[1st.size() - 1]
+-------+
| |
| |
| |
GetSize() +-------+
if(m_2ndVectorMode == SECOND_VECTOR_RING_BUFFER):
0 +-------+
| Alloc | 2nd[0]
+-------+
| Alloc | 2nd[1]
+-------+
| ... |
+-------+
| Alloc | 2nd[2nd.size() - 1]
+-------+
| |
| |
| |
+-------+
| Alloc | 1st[m_1stNullItemsBeginCount]
+-------+
| Alloc | 1st[m_1stNullItemsBeginCount + 1]
+-------+
| ... |
+-------+
| Alloc | 1st[1st.size() - 1]
+-------+
| |
GetSize() +-------+
if(m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK):
0 +-------+
| |
| |
| |
+-------+
| Alloc | 1st[m_1stNullItemsBeginCount]
+-------+
| Alloc | 1st[m_1stNullItemsBeginCount + 1]
+-------+
| ... |
+-------+
| Alloc | 1st[1st.size() - 1]
+-------+
| |
| |
| |
+-------+
| Alloc | 2nd[2nd.size() - 1]
+-------+
| ... |
+-------+
| Alloc | 2nd[1]
+-------+
| Alloc | 2nd[0]
GetSize() +-------+
*/
class VmaBlockMetadata_Linear : public VmaBlockMetadata
{
VMA_CLASS_NO_COPY(VmaBlockMetadata_Linear)
public:
VmaBlockMetadata_Linear(VmaAllocator hAllocator);
virtual ~VmaBlockMetadata_Linear();
@ -4602,6 +4681,11 @@ private:
all have smaller offset.
*/
SECOND_VECTOR_RING_BUFFER,
/*
Suballocations in 2nd vector are upper side of double stack.
They all have offsets higher than those in 1st vector.
Top of this stack means smaller offsets, but higher indices in this vector.
*/
SECOND_VECTOR_DOUBLE_STACK,
};
@ -7234,12 +7318,56 @@ bool VmaBlockMetadata_Linear::Validate() const
offset = suballoc.offset + suballoc.size + VMA_DEBUG_MARGIN;
}
if(offset > GetSize())
if(nullItem1stCount != m_1stNullItemsBeginCount + m_1stNullItemsMiddleCount)
{
return false;
}
if(nullItem1stCount != m_1stNullItemsBeginCount + m_1stNullItemsMiddleCount)
if(m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK)
{
const size_t suballoc2ndCount = suballocations2nd.size();
size_t nullItem2ndCount = 0;
for(size_t i = suballoc2ndCount; i--; )
{
const VmaSuballocation& suballoc = suballocations2nd[i];
const bool currFree = (suballoc.type == VMA_SUBALLOCATION_TYPE_FREE);
if(currFree != (suballoc.hAllocation == VK_NULL_HANDLE))
{
return false;
}
if(suballoc.offset < offset)
{
return false;
}
if(!currFree)
{
if(suballoc.hAllocation->GetOffset() != suballoc.offset)
{
return false;
}
if(suballoc.hAllocation->GetSize() != suballoc.size)
{
return false;
}
}
if(currFree)
{
++nullItem2ndCount;
}
offset = suballoc.offset + suballoc.size + VMA_DEBUG_MARGIN;
}
if(nullItem2ndCount != m_2ndNullItemsCount)
{
return false;
}
}
if(offset > GetSize())
{
return false;
}
@ -7343,7 +7471,9 @@ void VmaBlockMetadata_Linear::CalcAllocationStatInfo(VmaStatInfo& outInfo) const
}
size_t nextAlloc1stIndex = m_1stNullItemsBeginCount;
while(lastOffset < size)
const VkDeviceSize freeSpace1stTo2ndEnd =
m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK ? suballocations2nd.back().offset : size;
while(lastOffset < freeSpace1stTo2ndEnd)
{
// Find next non-null allocation or move nextAllocIndex to the end.
while(nextAlloc1stIndex < suballoc1stCount &&
@ -7381,10 +7511,10 @@ void VmaBlockMetadata_Linear::CalcAllocationStatInfo(VmaStatInfo& outInfo) const
// We are at the end.
else
{
// There is free space from lastOffset to size.
if(lastOffset < size)
// There is free space from lastOffset to freeSpace1stTo2ndEnd.
if(lastOffset < freeSpace1stTo2ndEnd)
{
const VkDeviceSize unusedRangeSize = size - lastOffset;
const VkDeviceSize unusedRangeSize = freeSpace1stTo2ndEnd - lastOffset;
++outInfo.unusedRangeCount;
outInfo.unusedBytes += unusedRangeSize;
outInfo.unusedRangeSizeMin = VMA_MIN(outInfo.unusedRangeSizeMin, unusedRangeSize);
@ -7392,7 +7522,64 @@ void VmaBlockMetadata_Linear::CalcAllocationStatInfo(VmaStatInfo& outInfo) const
}
// End of loop.
lastOffset = size;
lastOffset = freeSpace1stTo2ndEnd;
}
}
if(m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK)
{
size_t nextAlloc2ndIndex = suballocations2nd.size() - 1;
while(lastOffset < size)
{
// Find next non-null allocation or move nextAllocIndex to the end.
while(nextAlloc2ndIndex != SIZE_MAX &&
suballocations2nd[nextAlloc2ndIndex].hAllocation == VK_NULL_HANDLE)
{
--nextAlloc2ndIndex;
}
// Found non-null allocation.
if(nextAlloc2ndIndex != SIZE_MAX)
{
const VmaSuballocation& suballoc = suballocations2nd[nextAlloc2ndIndex];
// 1. Process free space before this allocation.
if(lastOffset < suballoc.offset)
{
// There is free space from lastOffset to suballoc.offset.
const VkDeviceSize unusedRangeSize = suballoc.offset - lastOffset;
++outInfo.unusedRangeCount;
outInfo.unusedBytes += unusedRangeSize;
outInfo.unusedRangeSizeMin = VMA_MIN(outInfo.unusedRangeSizeMin, unusedRangeSize);
outInfo.unusedRangeSizeMax = VMA_MIN(outInfo.unusedRangeSizeMax, unusedRangeSize);
}
// 2. Process this allocation.
// There is allocation with suballoc.offset, suballoc.size.
outInfo.usedBytes += suballoc.size;
outInfo.allocationSizeMin = VMA_MIN(outInfo.allocationSizeMin, suballoc.size);
outInfo.allocationSizeMax = VMA_MIN(outInfo.allocationSizeMax, suballoc.size);
// 3. Prepare for next iteration.
lastOffset = suballoc.offset + suballoc.size;
--nextAlloc2ndIndex;
}
// We are at the end.
else
{
// There is free space from lastOffset to size.
if(lastOffset < size)
{
const VkDeviceSize unusedRangeSize = size - lastOffset;
++outInfo.unusedRangeCount;
outInfo.unusedBytes += unusedRangeSize;
outInfo.unusedRangeSizeMin = VMA_MIN(outInfo.unusedRangeSizeMin, unusedRangeSize);
outInfo.unusedRangeSizeMax = VMA_MIN(outInfo.unusedRangeSizeMax, unusedRangeSize);
}
// End of loop.
lastOffset = size;
}
}
}
@ -7466,7 +7653,9 @@ void VmaBlockMetadata_Linear::AddPoolStats(VmaPoolStats& inoutStats) const
}
size_t nextAlloc1stIndex = m_1stNullItemsBeginCount;
while(lastOffset < size)
const VkDeviceSize freeSpace1stTo2ndEnd =
m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK ? suballocations2nd.back().offset : size;
while(lastOffset < freeSpace1stTo2ndEnd)
{
// Find next non-null allocation or move nextAllocIndex to the end.
while(nextAlloc1stIndex < suballoc1stCount &&
@ -7501,17 +7690,70 @@ void VmaBlockMetadata_Linear::AddPoolStats(VmaPoolStats& inoutStats) const
// We are at the end.
else
{
if(lastOffset < size)
if(lastOffset < freeSpace1stTo2ndEnd)
{
// There is free space from lastOffset to size.
const VkDeviceSize unusedRangeSize = size - lastOffset;
// There is free space from lastOffset to freeSpace1stTo2ndEnd.
const VkDeviceSize unusedRangeSize = freeSpace1stTo2ndEnd - lastOffset;
inoutStats.unusedSize += unusedRangeSize;
++inoutStats.unusedRangeCount;
inoutStats.unusedRangeSizeMax = VMA_MAX(inoutStats.unusedRangeSizeMax, unusedRangeSize);
}
// End of loop.
lastOffset = size;
lastOffset = freeSpace1stTo2ndEnd;
}
}
if(m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK)
{
size_t nextAlloc2ndIndex = suballocations2nd.size() - 1;
while(lastOffset < size)
{
// Find next non-null allocation or move nextAlloc2ndIndex to the end.
while(nextAlloc2ndIndex != SIZE_MAX &&
suballocations2nd[nextAlloc2ndIndex].hAllocation == VK_NULL_HANDLE)
{
--nextAlloc2ndIndex;
}
// Found non-null allocation.
if(nextAlloc2ndIndex != SIZE_MAX)
{
const VmaSuballocation& suballoc = suballocations2nd[nextAlloc2ndIndex];
// 1. Process free space before this allocation.
if(lastOffset < suballoc.offset)
{
// There is free space from lastOffset to suballoc.offset.
const VkDeviceSize unusedRangeSize = suballoc.offset - lastOffset;
inoutStats.unusedSize += unusedRangeSize;
++inoutStats.unusedRangeCount;
inoutStats.unusedRangeSizeMax = VMA_MAX(inoutStats.unusedRangeSizeMax, unusedRangeSize);
}
// 2. Process this allocation.
// There is allocation with suballoc.offset, suballoc.size.
++inoutStats.allocationCount;
// 3. Prepare for next iteration.
lastOffset = suballoc.offset + suballoc.size;
--nextAlloc2ndIndex;
}
// We are at the end.
else
{
if(lastOffset < size)
{
// There is free space from lastOffset to size.
const VkDeviceSize unusedRangeSize = size - lastOffset;
inoutStats.unusedSize += unusedRangeSize;
++inoutStats.unusedRangeCount;
inoutStats.unusedRangeSizeMax = VMA_MAX(inoutStats.unusedRangeSizeMax, unusedRangeSize);
}
// End of loop.
lastOffset = size;
}
}
}
}
@ -7519,8 +7761,6 @@ void VmaBlockMetadata_Linear::AddPoolStats(VmaPoolStats& inoutStats) const
#if VMA_STATS_STRING_ENABLED
void VmaBlockMetadata_Linear::PrintDetailedMap(class VmaJsonWriter& json) const
{
// TODO include 2nd vector
const VkDeviceSize size = GetSize();
const SuballocationVectorType& suballocations1st = AccessSuballocations1st();
const SuballocationVectorType& suballocations2nd = AccessSuballocations2nd();
@ -7586,7 +7826,9 @@ void VmaBlockMetadata_Linear::PrintDetailedMap(class VmaJsonWriter& json) const
size_t nextAlloc1stIndex = m_1stNullItemsBeginCount;
size_t alloc1stCount = 0;
while(lastOffset < size)
const VkDeviceSize freeSpace1stTo2ndEnd =
m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK ? suballocations2nd.back().offset : size;
while(lastOffset < freeSpace1stTo2ndEnd)
{
// Find next non-null allocation or move nextAllocIndex to the end.
while(nextAlloc1stIndex < suballoc1stCount &&
@ -7621,12 +7863,60 @@ void VmaBlockMetadata_Linear::PrintDetailedMap(class VmaJsonWriter& json) const
{
if(lastOffset < size)
{
// There is free space from lastOffset to size.
// There is free space from lastOffset to freeSpace1stTo2ndEnd.
++unusedRangeCount;
}
// End of loop.
lastOffset = size;
lastOffset = freeSpace1stTo2ndEnd;
}
}
if(m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK)
{
size_t nextAlloc2ndIndex = suballocations2nd.size() - 1;
while(lastOffset < size)
{
// Find next non-null allocation or move nextAlloc2ndIndex to the end.
while(nextAlloc2ndIndex != SIZE_MAX &&
suballocations2nd[nextAlloc2ndIndex].hAllocation == VK_NULL_HANDLE)
{
--nextAlloc2ndIndex;
}
// Found non-null allocation.
if(nextAlloc2ndIndex != SIZE_MAX)
{
const VmaSuballocation& suballoc = suballocations2nd[nextAlloc2ndIndex];
// 1. Process free space before this allocation.
if(lastOffset < suballoc.offset)
{
// There is free space from lastOffset to suballoc.offset.
++unusedRangeCount;
}
// 2. Process this allocation.
// There is allocation with suballoc.offset, suballoc.size.
++alloc2ndCount;
usedBytes += suballoc.size;
// 3. Prepare for next iteration.
lastOffset = suballoc.offset + suballoc.size;
++nextAlloc2ndIndex;
}
// We are at the end.
else
{
if(lastOffset < size)
{
// There is free space from lastOffset to size.
++unusedRangeCount;
}
// End of loop.
lastOffset = size;
}
}
}
@ -7687,7 +7977,7 @@ void VmaBlockMetadata_Linear::PrintDetailedMap(class VmaJsonWriter& json) const
}
nextAlloc1stIndex = m_1stNullItemsBeginCount;
while(lastOffset < size)
while(lastOffset < freeSpace1stTo2ndEnd)
{
// Find next non-null allocation or move nextAllocIndex to the end.
while(nextAlloc1stIndex < suballoc1stCount &&
@ -7720,15 +8010,64 @@ void VmaBlockMetadata_Linear::PrintDetailedMap(class VmaJsonWriter& json) const
// We are at the end.
else
{
if(lastOffset < size)
if(lastOffset < freeSpace1stTo2ndEnd)
{
// There is free space from lastOffset to size.
const VkDeviceSize unusedRangeSize = size - lastOffset;
// There is free space from lastOffset to freeSpace1stTo2ndEnd.
const VkDeviceSize unusedRangeSize = freeSpace1stTo2ndEnd - lastOffset;
PrintDetailedMap_UnusedRange(json, lastOffset, unusedRangeSize);
}
// End of loop.
lastOffset = size;
lastOffset = freeSpace1stTo2ndEnd;
}
}
if(m_2ndVectorMode == SECOND_VECTOR_DOUBLE_STACK)
{
size_t nextAlloc2ndIndex = suballocations2nd.size() - 1;
while(lastOffset < size)
{
// Find next non-null allocation or move nextAlloc2ndIndex to the end.
while(nextAlloc2ndIndex != SIZE_MAX &&
suballocations2nd[nextAlloc2ndIndex].hAllocation == VK_NULL_HANDLE)
{
--nextAlloc2ndIndex;
}
// Found non-null allocation.
if(nextAlloc2ndIndex != SIZE_MAX)
{
const VmaSuballocation& suballoc = suballocations2nd[nextAlloc2ndIndex];
// 1. Process free space before this allocation.
if(lastOffset < suballoc.offset)
{
// There is free space from lastOffset to suballoc.offset.
const VkDeviceSize unusedRangeSize = suballoc.offset - lastOffset;
PrintDetailedMap_UnusedRange(json, lastOffset, unusedRangeSize);
}
// 2. Process this allocation.
// There is allocation with suballoc.offset, suballoc.size.
PrintDetailedMap_Allocation(json, suballoc.offset, suballoc.hAllocation);
// 3. Prepare for next iteration.
lastOffset = suballoc.offset + suballoc.size;
--nextAlloc2ndIndex;
}
// We are at the end.
else
{
if(lastOffset < size)
{
// There is free space from lastOffset to size.
const VkDeviceSize unusedRangeSize = size - lastOffset;
PrintDetailedMap_UnusedRange(json, lastOffset, unusedRangeSize);
}
// End of loop.
lastOffset = size;
}
}
}