88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*
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* Copyright (C) 2017-2019 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 "runtime/memory_manager/svm_memory_manager.h"
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#include "runtime/command_stream/command_stream_receiver.h"
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#include "runtime/helpers/aligned_memory.h"
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#include "runtime/memory_manager/memory_manager.h"
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namespace NEO {
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void SVMAllocsManager::MapBasedAllocationTracker::insert(GraphicsAllocation &ga) {
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allocs.insert(std::make_pair(ga.getUnderlyingBuffer(), &ga));
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}
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void SVMAllocsManager::MapBasedAllocationTracker::remove(GraphicsAllocation &ga) {
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std::map<const void *, GraphicsAllocation *>::iterator iter;
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iter = allocs.find(ga.getUnderlyingBuffer());
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allocs.erase(iter);
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}
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GraphicsAllocation *SVMAllocsManager::MapBasedAllocationTracker::get(const void *ptr) {
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std::map<const void *, GraphicsAllocation *>::iterator Iter, End;
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GraphicsAllocation *GA;
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if (ptr == nullptr)
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return nullptr;
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End = allocs.end();
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Iter = allocs.lower_bound(ptr);
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if (((Iter != End) && (Iter->first != ptr)) ||
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(Iter == End)) {
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if (Iter == allocs.begin()) {
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Iter = End;
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} else {
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Iter--;
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}
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}
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if (Iter != End) {
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GA = Iter->second;
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if (ptr < ((char *)GA->getUnderlyingBuffer() + GA->getUnderlyingBufferSize())) {
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return GA;
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}
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}
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return nullptr;
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}
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SVMAllocsManager::SVMAllocsManager(MemoryManager *memoryManager) : memoryManager(memoryManager) {
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}
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void *SVMAllocsManager::createSVMAlloc(size_t size, cl_mem_flags flags) {
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if (size == 0)
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return nullptr;
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std::unique_lock<std::mutex> lock(mtx);
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GraphicsAllocation *GA = memoryManager->allocateGraphicsMemoryWithProperties(
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{true, size, GraphicsAllocation::AllocationType::SVM, flags});
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if (!GA) {
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return nullptr;
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}
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GA->setMemObjectsAllocationWithWritableFlags(!SVMAllocsManager::memFlagIsReadOnly(flags));
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GA->setCoherent(isValueSet(flags, CL_MEM_SVM_FINE_GRAIN_BUFFER));
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this->SVMAllocs.insert(*GA);
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return GA->getUnderlyingBuffer();
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}
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GraphicsAllocation *SVMAllocsManager::getSVMAlloc(const void *ptr) {
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std::unique_lock<std::mutex> lock(mtx);
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return SVMAllocs.get(ptr);
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}
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void SVMAllocsManager::freeSVMAlloc(void *ptr) {
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GraphicsAllocation *GA = getSVMAlloc(ptr);
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if (GA) {
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std::unique_lock<std::mutex> lock(mtx);
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SVMAllocs.remove(*GA);
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memoryManager->freeGraphicsMemory(GA);
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}
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}
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bool SVMAllocsManager::memFlagIsReadOnly(cl_svm_mem_flags flags) {
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return (flags & (CL_MEM_READ_ONLY | CL_MEM_HOST_READ_ONLY | CL_MEM_HOST_NO_ACCESS)) != 0;
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}
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} // namespace NEO
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