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Added some new tests: TestAllocationAlgorithmsCorrectness

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This commit is contained in:
Adam Sawicki 2022-02-08 15:04:08 +01:00
parent bb29254253
commit 15206baf40
1 changed files with 186 additions and 0 deletions
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186
src/Tests.cpp
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@ -3981,6 +3981,191 @@ static void TestLinearAllocatorMultiBlock()
vmaDestroyPool(g_hAllocator, pool);
}
static void TestAllocationAlgorithmsCorrectness()
{
wprintf(L"Test allocation algorithm correctness\n");
constexpr uint32_t LEVEL_COUNT = 12;
RandomNumberGenerator rand{2342435};
for(uint32_t isVirtual = 0; isVirtual < 3; ++isVirtual)
{
// isVirtual == 0: Use VmaPool, unit is 64 KB.
// isVirtual == 1: Use VmaVirtualBlock, unit is 64 KB.
// isVirtual == 2: Use VmaVirtualBlock, unit is 1 B.
const VkDeviceSize sizeUnit = isVirtual == 2 ? 1 : 0x10000;
const VkDeviceSize blockSize = (1llu << (LEVEL_COUNT - 1)) * sizeUnit;
for(uint32_t algorithmIndex = 0; algorithmIndex < 2; ++algorithmIndex)
{
VmaPool pool = VK_NULL_HANDLE;
VmaVirtualBlock virtualBlock = VK_NULL_HANDLE;
if(isVirtual)
{
VmaVirtualBlockCreateInfo blockCreateInfo = {};
blockCreateInfo.pAllocationCallbacks = g_Allocs;
blockCreateInfo.flags = algorithmIndex ? VMA_VIRTUAL_BLOCK_CREATE_TLSF_ALGORITHM_BIT : 0;
blockCreateInfo.size = blockSize;
TEST(vmaCreateVirtualBlock(&blockCreateInfo, &virtualBlock) == VK_SUCCESS);
}
else
{
VmaPoolCreateInfo poolCreateInfo = {};
poolCreateInfo.blockSize = blockSize;
poolCreateInfo.flags = algorithmIndex ? VMA_POOL_CREATE_TLSF_ALGORITHM_BIT : 0;
poolCreateInfo.minBlockCount = poolCreateInfo.maxBlockCount = 1;
VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
bufCreateInfo.size = 0x10000; // Doesn't matter.
bufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT;
VmaAllocationCreateInfo allocCreateInfo = {};
TEST(vmaFindMemoryTypeIndexForBufferInfo(g_hAllocator, &bufCreateInfo, &allocCreateInfo, &poolCreateInfo.memoryTypeIndex) == VK_SUCCESS);
TEST(vmaCreatePool(g_hAllocator, &poolCreateInfo, &pool) == VK_SUCCESS);
}
for(uint32_t strategyIndex = 0; strategyIndex < 3; ++strategyIndex)
{
struct AllocData
{
VmaAllocation alloc = VK_NULL_HANDLE;
VkBuffer buf = VK_NULL_HANDLE;
VmaVirtualAllocation virtualAlloc = VK_NULL_HANDLE;
};
std::vector<AllocData> allocationsPerLevel[LEVEL_COUNT];
auto createAllocation = [&](uint32_t level) -> void
{
AllocData allocData;
const VkDeviceSize allocSize = (1llu << level) * sizeUnit;
if(isVirtual)
{
VmaVirtualAllocationCreateInfo allocCreateInfo = {};
allocCreateInfo.size = allocSize;
switch(strategyIndex)
{
case 1: allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT; break;
case 2: allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT; break;
}
TEST(vmaVirtualAllocate(virtualBlock, &allocCreateInfo, &allocData.virtualAlloc, nullptr) == VK_SUCCESS);
}
else
{
VmaAllocationCreateInfo allocCreateInfo = {};
allocCreateInfo.pool = pool;
switch(strategyIndex)
{
case 1: allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT; break;
case 2: allocCreateInfo.flags = VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT; break;
}
VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
bufCreateInfo.size = allocSize;
bufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT;
TEST(vmaCreateBuffer(g_hAllocator, &bufCreateInfo, &allocCreateInfo, &allocData.buf, &allocData.alloc, nullptr) == VK_SUCCESS);
}
allocationsPerLevel[level].push_back(allocData);
};
auto destroyAllocation = [&](uint32_t level, size_t index) -> void
{
const AllocData& allocData = allocationsPerLevel[level][index];
if(isVirtual)
vmaVirtualFree(virtualBlock, allocData.virtualAlloc);
else
vmaDestroyBuffer(g_hAllocator, allocData.buf, allocData.alloc);
allocationsPerLevel[level].erase(allocationsPerLevel[level].begin() + index);
};
// Fill entire block with one big allocation.
createAllocation(LEVEL_COUNT - 1);
// For each level, remove one allocation and refill it with 2 allocations at lower level.
for(uint32_t level = LEVEL_COUNT; level-- > 1; )
{
size_t indexToDestroy = rand.Generate() % allocationsPerLevel[level].size();
destroyAllocation(level, indexToDestroy);
createAllocation(level - 1);
createAllocation(level - 1);
}
// Test statistics.
{
uint32_t actualAllocCount = 0, statAllocCount = 0;
VkDeviceSize actualAllocSize = 0, statAllocSize = 0;
// Calculate actual statistics.
for(uint32_t level = 0; level < LEVEL_COUNT; ++level)
{
for(size_t index = allocationsPerLevel[level].size(); index--; )
{
if(isVirtual)
{
VmaVirtualAllocationInfo allocInfo = {};
vmaGetVirtualAllocationInfo(virtualBlock, allocationsPerLevel[level][index].virtualAlloc, &allocInfo);
actualAllocSize += allocInfo.size;
}
else
{
VmaAllocationInfo allocInfo = {};
vmaGetAllocationInfo(g_hAllocator, allocationsPerLevel[level][index].alloc, &allocInfo);
actualAllocSize += allocInfo.size;
}
}
actualAllocCount += (uint32_t)allocationsPerLevel[level].size();
}
// Fetch reported statistics.
if(isVirtual)
{
VmaStatInfo info = {};
vmaCalculateVirtualBlockStats(virtualBlock, &info);
statAllocCount = info.allocationCount;
statAllocSize = info.usedBytes;
TEST(info.blockCount == 1);
TEST(info.usedBytes + info.unusedBytes == blockSize);
}
else
{
VmaPoolStats stats = {};
vmaGetPoolStats(g_hAllocator, pool, &stats);
statAllocCount = (uint32_t)stats.allocationCount;
statAllocSize = stats.size - stats.unusedSize;
TEST(stats.blockCount == 1);
TEST(stats.size == blockSize);
}
// Compare them.
TEST(actualAllocCount == statAllocCount);
TEST(actualAllocSize == statAllocSize);
}
// Test JSON dump - for manual inspection.
{
char* json = nullptr;
if(isVirtual)
{
vmaBuildVirtualBlockStatsString(virtualBlock, &json, VK_TRUE);
int I = 1; // Put breakpoint here to inspect `json`.
vmaFreeVirtualBlockStatsString(virtualBlock, json);
}
else
{
vmaBuildStatsString(g_hAllocator, &json, VK_TRUE);
int I = 1; // Put breakpoint here to inspect `json`.
vmaFreeStatsString(g_hAllocator, json);
}
}
// Free all remaining allocations
for(uint32_t level = 0; level < LEVEL_COUNT; ++level)
for(size_t index = allocationsPerLevel[level].size(); index--; )
destroyAllocation(level, index);
}
vmaDestroyVirtualBlock(virtualBlock);
vmaDestroyPool(g_hAllocator, pool);
}
}
}
static void ManuallyTestLinearAllocator()
{
VmaStats origStats;
@ -7081,6 +7266,7 @@ void Test()
TestLinearAllocator();
ManuallyTestLinearAllocator();
TestLinearAllocatorMultiBlock();
TestAllocationAlgorithmsCorrectness();
BasicTestTLSF();
BasicTestBuddyAllocator();