| /********************************************************************** |
| // @@@ START COPYRIGHT @@@ |
| // |
| // 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. |
| // |
| // @@@ END COPYRIGHT @@@ |
| **********************************************************************/ |
| #ifndef COMMONSTRUCTS_H |
| #define COMMONSTRUCTS_H |
| |
| /* -*-C++-*- |
| ****************************************************************************** |
| * |
| * File: CommonStructs.h |
| * RCS: $Id: CommonStructs.h,v 1.6 1998/08/10 15:33:34 Exp $ |
| * |
| * Description: This file contains the definitions of various structures |
| * common to more than one class in ArkSort. |
| * |
| * Created: 05/20/96 |
| * Modified: $ $Date: 1998/08/10 15:33:34 $ (GMT) |
| * Language: C++ |
| * Status: $State: Exp $ |
| * |
| * |
| * |
| * |
| ****************************************************************************** |
| */ |
| |
| #include <Platform.h> |
| |
| |
| // fix later UNIBR4 |
| #ifdef max |
| #undef max |
| #endif |
| #ifdef min |
| #undef min |
| #endif |
| |
| #include "NABasicObject.h" |
| |
| //---------------------------------------------------------------------- |
| // This is the structure which is stored at the start of each scratch |
| // file block used for storing runs. |
| //---------------------------------------------------------------------- |
| |
| struct ScrBlockHeader |
| { |
| Lng32 thisBlockNum_; |
| Lng32 nextBlockNum_; |
| Lng32 bytesUsed_; |
| Lng32 runNum_; |
| Lng32 numRecs_; |
| }; |
| |
| |
| |
| //--------------------------------------------------------------------- |
| // The fields withing SortType structure are used to select options |
| // such as : |
| // - I need to sort to determine the top 5 records. |
| // - I need to determine the keys which would split a given range. |
| // of records into <n> sets containing almost equal number of |
| // records. |
| // - I would like to use QuickSort for generating runs. |
| // - I would like sort to remove records with duplicate keys. |
| // - I need the sort in a seperate process. As mentioned earlier |
| // our attempt here is to implement UPS with external sorting as |
| // the general sorting method. But we are not restricting the |
| // design to prevent this implementation from being extended to |
| // introduce a separate sort processes. |
| //--------------------------------------------------------------------- |
| |
| struct SortType { |
| UInt32 useQSForRunGeneration_ : 1; |
| UInt32 useIterQSForRunGeneration_ : 1; |
| UInt32 useRSForRunGeneration_ : 1; |
| UInt32 useIterHeapForRunGeneration_ : 1; |
| UInt32 internalSort_ : 1; |
| UInt32 doNotAllocRec_ : 1; |
| UInt32 upsSort_ : 1; |
| UInt32 topNOnly_ : 1; |
| UInt32 splittingVectorNeeded_ : 1; |
| UInt32 mergeOnly_ : 1; |
| UInt32 removeDuplicates_ : 1; |
| UInt32 filler_ : 6; |
| }; |
| |
| enum ScratchOverflowMode |
| { |
| SCRATCH_DISK =1, |
| SCRATCH_SSD, |
| SCRATCH_MMAP |
| }; |
| |
| #endif |
| |
| |
| |
| |
