| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #ifndef _HLL6ARRAY_INTERNAL_HPP_ |
| #define _HLL6ARRAY_INTERNAL_HPP_ |
| |
| #include <cstring> |
| |
| #include "Hll6Array.hpp" |
| |
| namespace datasketches { |
| |
| template<typename A> |
| Hll6Array<A>::Hll6Array(uint8_t lgConfigK, bool startFullSize, const A& allocator): |
| HllArray<A>(lgConfigK, target_hll_type::HLL_6, startFullSize, allocator) |
| { |
| const int numBytes = this->hll6ArrBytes(lgConfigK); |
| this->hllByteArr_.resize(numBytes, 0); |
| } |
| |
| template<typename A> |
| std::function<void(HllSketchImpl<A>*)> Hll6Array<A>::get_deleter() const { |
| return [](HllSketchImpl<A>* ptr) { |
| using Hll6Alloc = typename std::allocator_traits<A>::template rebind_alloc<Hll6Array<A>>; |
| Hll6Array<A>* hll = static_cast<Hll6Array<A>*>(ptr); |
| Hll6Alloc hll6Alloc(hll->getAllocator()); |
| hll->~Hll6Array(); |
| hll6Alloc.deallocate(hll, 1); |
| }; |
| } |
| |
| template<typename A> |
| Hll6Array<A>* Hll6Array<A>::copy() const { |
| using Hll6Alloc = typename std::allocator_traits<A>::template rebind_alloc<Hll6Array<A>>; |
| Hll6Alloc hll6Alloc(this->getAllocator()); |
| return new (hll6Alloc.allocate(1)) Hll6Array<A>(*this); |
| } |
| |
| template<typename A> |
| uint8_t Hll6Array<A>::getSlot(uint32_t slotNo) const { |
| const uint32_t startBit = slotNo * 6; |
| const uint32_t shift = startBit & 0x7; |
| const uint32_t byteIdx = startBit >> 3; |
| const uint16_t twoByteVal = (this->hllByteArr_[byteIdx + 1] << 8) | this->hllByteArr_[byteIdx]; |
| return (twoByteVal >> shift) & hll_constants::VAL_MASK_6; |
| } |
| |
| template<typename A> |
| void Hll6Array<A>::putSlot(uint32_t slotNo, uint8_t value) { |
| const uint32_t startBit = slotNo * 6; |
| const uint32_t shift = startBit & 0x7; |
| const uint32_t byteIdx = startBit >> 3; |
| const uint16_t valShifted = (value & 0x3F) << shift; |
| uint16_t curMasked = (this->hllByteArr_[byteIdx + 1] << 8) | this->hllByteArr_[byteIdx]; |
| curMasked &= (~(hll_constants::VAL_MASK_6 << shift)); |
| const uint16_t insert = curMasked | valShifted; |
| this->hllByteArr_[byteIdx] = insert & 0xFF; |
| this->hllByteArr_[byteIdx + 1] = (insert & 0xFF00) >> 8; |
| } |
| |
| template<typename A> |
| uint32_t Hll6Array<A>::getHllByteArrBytes() const { |
| return this->hll6ArrBytes(this->lgConfigK_); |
| } |
| |
| template<typename A> |
| HllSketchImpl<A>* Hll6Array<A>::couponUpdate(uint32_t coupon) { |
| internalCouponUpdate(coupon); |
| return this; |
| } |
| |
| template<typename A> |
| void Hll6Array<A>::internalCouponUpdate(uint32_t coupon) { |
| const uint32_t configKmask = (1 << this->lgConfigK_) - 1; |
| const uint32_t slotNo = HllUtil<A>::getLow26(coupon) & configKmask; |
| const uint8_t newVal = HllUtil<A>::getValue(coupon); |
| |
| const uint8_t curVal = getSlot(slotNo); |
| if (newVal > curVal) { |
| putSlot(slotNo, newVal); |
| this->hipAndKxQIncrementalUpdate(curVal, newVal); |
| if (curVal == 0) { |
| this->numAtCurMin_--; // interpret numAtCurMin as num zeros |
| } |
| } |
| } |
| |
| template<typename A> |
| void Hll6Array<A>::mergeHll(const HllArray<A>& src) { |
| for (const auto coupon: src) { |
| internalCouponUpdate(coupon); |
| } |
| } |
| |
| } |
| |
| #endif // _HLL6ARRAY_INTERNAL_HPP_ |