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/*
* Copyright (C) 2018-2023 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "opencl/source/mem_obj/map_operations_handler.h"
#include "shared/source/helpers/ptr_math.h"
using namespace NEO;
size_t MapOperationsHandler::size() const {
std::lock_guard<std::mutex> lock(mtx);
return mappedPointers.size();
}
bool MapOperationsHandler::add(void *ptr, size_t ptrLength, cl_map_flags &mapFlags, MemObjSizeArray &size, MemObjOffsetArray &offset, uint32_t mipLevel, GraphicsAllocation *graphicsAllocation) {
std::lock_guard<std::mutex> lock(mtx);
MapInfo mapInfo(ptr, ptrLength, size, offset, mipLevel);
mapInfo.readOnly = (mapFlags == CL_MAP_READ);
mapInfo.graphicsAllocation = graphicsAllocation;
if (isOverlapping(mapInfo)) {
return false;
}
mappedPointers.push_back(mapInfo);
return true;
}
bool MapOperationsHandler::isOverlapping(MapInfo &inputMapInfo) {
if (inputMapInfo.readOnly) {
return false;
}
auto inputStartPtr = inputMapInfo.ptr;
auto inputEndPtr = ptrOffset(inputStartPtr, inputMapInfo.ptrLength);
for (auto &mapInfo : mappedPointers) {
auto mappedStartPtr = mapInfo.ptr;
auto mappedEndPtr = ptrOffset(mappedStartPtr, mapInfo.ptrLength);
// Requested ptr starts before or inside existing ptr range and overlapping end
if (inputStartPtr < mappedEndPtr && inputEndPtr >= mappedStartPtr) {
return true;
}
}
return false;
}
bool MapOperationsHandler::find(void *mappedPtr, MapInfo &outMapInfo) {
std::lock_guard<std::mutex> lock(mtx);
for (auto &mapInfo : mappedPointers) {
if (mapInfo.ptr == mappedPtr) {
outMapInfo = mapInfo;
return true;
}
}
return false;
}
bool NEO::MapOperationsHandler::findInfoForHostPtr(const void *ptr, size_t size, MapInfo &outMapInfo) {
std::lock_guard<std::mutex> lock(mtx);
for (auto &mapInfo : mappedPointers) {
void *ptrStart = mapInfo.ptr;
void *ptrEnd = ptrOffset(mapInfo.ptr, mapInfo.ptrLength);
if (ptrStart <= ptr && ptrOffset(ptr, size) <= ptrEnd) {
outMapInfo = mapInfo;
return true;
}
}
return false;
}
void MapOperationsHandler::remove(void *mappedPtr) {
std::lock_guard<std::mutex> lock(mtx);
auto endIter = mappedPointers.end();
for (auto it = mappedPointers.begin(); it != endIter; it++) {
if (it->ptr == mappedPtr) {
std::iter_swap(it, mappedPointers.end() - 1);
mappedPointers.pop_back();
break;
}
}
}
MapOperationsHandler &NEO::MapOperationsStorage::getHandler(cl_mem memObj) {
std::lock_guard<std::mutex> lock(mutex);
return handlers[memObj];
}
MapOperationsHandler *NEO::MapOperationsStorage::getHandlerIfExists(cl_mem memObj) {
std::lock_guard<std::mutex> lock(mutex);
auto iterator = handlers.find(memObj);
if (iterator == handlers.end()) {
return nullptr;
}
return &iterator->second;
}
bool NEO::MapOperationsStorage::getInfoForHostPtr(const void *ptr, size_t size, MapInfo &outInfo) {
std::lock_guard<std::mutex> lock(mutex);
for (auto &entry : handlers) {
if (entry.second.findInfoForHostPtr(ptr, size, outInfo)) {
return true;
}
}
return false;
}
void NEO::MapOperationsStorage::removeHandler(cl_mem memObj) {
std::lock_guard<std::mutex> lock(mutex);
auto iterator = handlers.find(memObj);
handlers.erase(iterator);
}
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