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/*
* Copyright (C) 2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/device/device.h"
#include "shared/source/helpers/aligned_memory.h"
#include "shared/source/memory_manager/memory_manager.h"
#include "shared/source/utilities/buffer_pool_allocator.inl"
#include "shared/source/utilities/generic_pool_allocator.h"
#include "shared/source/utilities/heap_allocator.h"
namespace NEO {
template <PoolTraits Traits>
GenericPool<Traits>::GenericPool(Device *device, size_t poolSize)
: BaseType(device->getMemoryManager(), nullptr), device(device) {
DEBUG_BREAK_IF(device->getProductHelper().is2MBLocalMemAlignmentEnabled() &&
!isAligned(poolSize, MemoryConstants::pageSize2M));
auto properties = Traits::createAllocationProperties(device, poolSize);
auto graphicsAllocation = this->memoryManager->allocateGraphicsMemoryWithProperties(properties);
this->chunkAllocator.reset(new NEO::HeapAllocator(this->params.startingOffset,
graphicsAllocation ? graphicsAllocation->getUnderlyingBufferSize() : 0u,
MemoryConstants::pageSize,
0u));
this->mainStorage.reset(graphicsAllocation);
this->mtx = std::make_unique<std::mutex>();
stackVec.push_back(graphicsAllocation);
}
template <PoolTraits Traits>
GenericPool<Traits>::GenericPool(GenericPool &&pool) noexcept : BaseType(std::move(pool)) {
mtx.reset(pool.mtx.release());
this->stackVec = std::move(pool.stackVec);
this->device = pool.device;
}
template <PoolTraits Traits>
GenericPool<Traits>::~GenericPool() {
if (this->mainStorage) {
device->getMemoryManager()->freeGraphicsMemory(this->mainStorage.release());
}
}
template <PoolTraits Traits>
SharedPoolAllocation *GenericPool<Traits>::allocate(size_t size) {
auto offset = static_cast<size_t>(this->chunkAllocator->allocate(size));
if (offset == 0) {
return nullptr;
}
return new SharedPoolAllocation{this->mainStorage.get(),
offset - this->params.startingOffset,
size,
mtx.get()};
}
template <PoolTraits Traits>
const StackVec<GraphicsAllocation *, 1> &GenericPool<Traits>::getAllocationsVector() {
return stackVec;
}
template <PoolTraits Traits>
GenericPoolAllocator<Traits>::GenericPoolAllocator(Device *device) : device(device) {}
template <PoolTraits Traits>
SharedPoolAllocation *GenericPoolAllocator<Traits>::requestGraphicsAllocation(size_t size) {
if (size > Traits::maxAllocationSize) {
return nullptr;
}
std::lock_guard<std::mutex> lock(allocatorMtx);
if (this->bufferPools.empty()) {
this->addNewBufferPool(GenericPool<Traits>(device, alignToPoolSize(Traits::defaultPoolSize)));
}
auto allocFromPool = allocateFromPools(size);
if (allocFromPool != nullptr) {
return allocFromPool;
}
this->drain();
allocFromPool = allocateFromPools(size);
if (allocFromPool != nullptr) {
return allocFromPool;
}
this->addNewBufferPool(GenericPool<Traits>(device, alignToPoolSize(Traits::defaultPoolSize)));
return allocateFromPools(size);
}
template <PoolTraits Traits>
void GenericPoolAllocator<Traits>::freeSharedAllocation(SharedPoolAllocation *sharedPoolAllocation) {
std::unique_lock lock(allocatorMtx);
this->tryFreeFromPoolBuffer(sharedPoolAllocation->getGraphicsAllocation(),
sharedPoolAllocation->getOffset(),
sharedPoolAllocation->getSize());
delete sharedPoolAllocation;
}
template <PoolTraits Traits>
SharedPoolAllocation *GenericPoolAllocator<Traits>::allocateFromPools(size_t size) {
for (auto &pool : this->bufferPools) {
if (auto allocation = pool.allocate(size)) {
return allocation;
}
}
return nullptr;
}
template <PoolTraits Traits>
size_t GenericPoolAllocator<Traits>::alignToPoolSize(size_t size) const {
return alignUp(size, Traits::poolAlignment);
}
} // namespace NEO
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