134 lines
4.8 KiB
C++
134 lines
4.8 KiB
C++
/*
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* Copyright (C) 2024 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "shared/source/utilities/isa_pool_allocator.h"
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#include "shared/source/device/device.h"
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#include "shared/source/memory_manager/allocation_properties.h"
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#include "shared/source/memory_manager/memory_manager.h"
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#include "shared/source/utilities/buffer_pool_allocator.inl"
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namespace NEO {
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ISAPool::ISAPool(Device *device, bool isBuiltin, size_t storageSize)
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: BaseType(device->getMemoryManager(), nullptr), device(device), isBuiltin(isBuiltin) {
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this->chunkAllocator.reset(new NEO::HeapAllocator(startingOffset, storageSize, MemoryConstants::pageSize, 0u));
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auto allocationType = isBuiltin ? NEO::AllocationType::kernelIsaInternal : NEO::AllocationType::kernelIsa;
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auto graphicsAllocation = memoryManager->allocateGraphicsMemoryWithProperties({device->getRootDeviceIndex(),
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storageSize,
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allocationType,
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device->getDeviceBitfield()});
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this->mainStorage.reset(graphicsAllocation);
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this->mtx = std::make_unique<std::mutex>();
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this->stackVec.push_back(graphicsAllocation);
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}
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ISAPool::ISAPool(ISAPool &&pool) : BaseType(std::move(pool)) {
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this->isBuiltin = pool.isBuiltin;
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mtx.reset(pool.mtx.release());
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this->stackVec = std::move(pool.stackVec);
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this->device = pool.device;
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}
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ISAPool::~ISAPool() {
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if (mainStorage) {
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device->getMemoryManager()->freeGraphicsMemory(mainStorage.release());
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}
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}
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SharedIsaAllocation *ISAPool::allocateISA(size_t requestedSize) const {
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auto offset = static_cast<size_t>(this->chunkAllocator->allocate(requestedSize));
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if (offset == 0) {
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return nullptr;
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}
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return new SharedIsaAllocation{this->mainStorage.get(), offset - startingOffset, requestedSize, mtx.get()};
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}
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const StackVec<NEO::GraphicsAllocation *, 1> &ISAPool::getAllocationsVector() {
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return stackVec;
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}
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ISAPoolAllocator::ISAPoolAllocator(Device *device) : device(device) {
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}
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/**
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* @brief This method allocates SharedIsaAllocation object for a single user (module or program).
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* In first step, it checks if requested size for the ISA is higher than default pool size
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* and creates new ISA pool if it is.
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* Next, it tries to allocate using existing pools.
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* If failed, all existing pools are drained and performs allocation again.
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* If failed, creates another ISA pool and tries to allocate again.
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*
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* @param[in] isBuiltin flag specifying whether ISA will be used for builtin kernels
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* @param[in] size size requested by the client.
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*
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* @return returns SharedIsaAllocation or nullptr if allocation didn't succeeded
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*/
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SharedIsaAllocation *ISAPoolAllocator::requestGraphicsAllocationForIsa(bool isBuiltin, size_t size) {
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std::unique_lock lock(allocatorMtx);
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auto maxAllocationSize = getAllocationSize(isBuiltin);
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if (size > maxAllocationSize) {
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addNewBufferPool(ISAPool(device, isBuiltin, size));
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}
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auto sharedIsaAllocation = tryAllocateISA(isBuiltin, size);
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if (sharedIsaAllocation) {
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return sharedIsaAllocation;
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}
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drain();
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sharedIsaAllocation = tryAllocateISA(isBuiltin, size);
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if (sharedIsaAllocation) {
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return sharedIsaAllocation;
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}
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addNewBufferPool(ISAPool(device, isBuiltin, getAllocationSize(isBuiltin)));
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return tryAllocateISA(isBuiltin, size);
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}
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/**
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* @brief This method releases SharedIsaAllocation.
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*
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* @param[in] sharedIsaAllocation SharedIsaAllocation to free.
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*
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* @note actual chunk is not released immediately, it's freed during drain call.
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*/
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void ISAPoolAllocator::freeSharedIsaAllocation(SharedIsaAllocation *sharedIsaAllocation) {
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std::unique_lock lock(allocatorMtx);
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tryFreeFromPoolBuffer(sharedIsaAllocation->getGraphicsAllocation(), sharedIsaAllocation->getOffset(), sharedIsaAllocation->getSize());
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delete sharedIsaAllocation;
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}
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/**
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* @brief This method iterates over existing pools and tries to allocate shared isa allocation
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* on one of them. It will use only pools with correct isa type.
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*
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* @param[in] isBuiltin flag specifying whether ISA will be used for builtin kernels
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* @param[in] size size requested by the user.
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*
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* @return returns SharedIsaAllocation or nullptr if allocation didn't succeeded
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*/
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SharedIsaAllocation *ISAPoolAllocator::tryAllocateISA(bool isBuiltin, size_t size) {
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for (auto &isaPoolParent : this->bufferPools) {
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auto &isaPool = static_cast<ISAPool &>(isaPoolParent);
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if (isaPool.isBuiltinPool() == isBuiltin) {
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auto sharedIsaAllocation = isaPool.allocateISA(size);
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if (sharedIsaAllocation != nullptr) {
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return sharedIsaAllocation;
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}
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}
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}
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return nullptr;
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}
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} // namespace NEO
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