95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/*
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* Copyright (c) 2017, Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "runtime/memory_manager/memory_manager.h"
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#include "runtime/memory_manager/svm_memory_manager.h"
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#include "runtime/helpers/aligned_memory.h"
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#include "runtime/command_stream/command_stream_receiver.h"
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namespace OCLRT {
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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, bool coherent) {
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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->allocateGraphicsMemoryForSVM(size, coherent);
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if (!GA) {
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return nullptr;
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}
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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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} // namespace OCLRT
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