| /* |
| * 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(const int lgConfigK, const bool startFullSize) : |
| HllArray<A>(lgConfigK, target_hll_type::HLL_6, startFullSize) { |
| const int numBytes = this->hll6ArrBytes(lgConfigK); |
| typedef typename std::allocator_traits<A>::template rebind_alloc<uint8_t> uint8Alloc; |
| this->hllByteArr = uint8Alloc().allocate(numBytes); |
| std::fill(this->hllByteArr, this->hllByteArr + numBytes, 0); |
| } |
| |
| template<typename A> |
| Hll6Array<A>::Hll6Array(const Hll6Array<A>& that) : |
| HllArray<A>(that) |
| { |
| // can determine hllByteArr size in parent class, no need to allocate here |
| } |
| |
| template<typename A> |
| Hll6Array<A>::~Hll6Array() { |
| // hllByteArr deleted in parent |
| } |
| |
| template<typename A> |
| std::function<void(HllSketchImpl<A>*)> Hll6Array<A>::get_deleter() const { |
| return [](HllSketchImpl<A>* ptr) { |
| typedef typename std::allocator_traits<A>::template rebind_alloc<Hll6Array<A>> hll6Alloc; |
| Hll6Array<A>* hll = static_cast<Hll6Array<A>*>(ptr); |
| hll->~Hll6Array(); |
| hll6Alloc().deallocate(hll, 1); |
| }; |
| } |
| |
| template<typename A> |
| Hll6Array<A>* Hll6Array<A>::copy() const { |
| typedef typename std::allocator_traits<A>::template rebind_alloc<Hll6Array<A>> hll6Alloc; |
| return new (hll6Alloc().allocate(1)) Hll6Array<A>(*this); |
| } |
| |
| template<typename A> |
| uint8_t Hll6Array<A>::getSlot(int slotNo) const { |
| const int startBit = slotNo * 6; |
| const int shift = startBit & 0x7; |
| const int byteIdx = startBit >> 3; |
| const uint16_t twoByteVal = (this->hllByteArr[byteIdx + 1] << 8) | this->hllByteArr[byteIdx]; |
| return (twoByteVal >> shift) & HllUtil<A>::VAL_MASK_6; |
| } |
| |
| template<typename A> |
| void Hll6Array<A>::putSlot(int slotNo, uint8_t value) { |
| const int startBit = slotNo * 6; |
| const int shift = startBit & 0x7; |
| const int byteIdx = startBit >> 3; |
| const uint16_t valShifted = (value & 0x3F) << shift; |
| uint16_t curMasked = (this->hllByteArr[byteIdx + 1] << 8) | this->hllByteArr[byteIdx]; |
| curMasked &= (~(HllUtil<A>::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> |
| int Hll6Array<A>::getHllByteArrBytes() const { |
| return this->hll6ArrBytes(this->lgConfigK); |
| } |
| |
| template<typename A> |
| HllSketchImpl<A>* Hll6Array<A>::couponUpdate(const int coupon) { |
| internalCouponUpdate(coupon); |
| return this; |
| } |
| |
| template<typename A> |
| void Hll6Array<A>::internalCouponUpdate(const int coupon) { |
| const int configKmask = (1 << this->lgConfigK) - 1; |
| const int slotNo = HllUtil<A>::getLow26(coupon) & configKmask; |
| const int newVal = HllUtil<A>::getValue(coupon); |
| |
| const int 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 (auto coupon: src) { |
| internalCouponUpdate(coupon); |
| } |
| } |
| |
| } |
| |
| #endif // _HLL6ARRAY_INTERNAL_HPP_ |