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00001 #pragma once
00002 
00003 #include <core/global_definitions.hpp>
00004 #include <gpu/gpu_base_column.hpp>
00005 
00006 namespace CoGaDB{
00007 
00008 //template <typename T> 
00009 //const std::vector<unsigned int> gpu_sort(std::vector<T> values_in_column);
00010 
00011 int CUDA_device_check(int gpudevice);
00012 
00013 int check_for_CUDA_devices();
00014 
00015 unsigned int getNumberofGPUMultiprocessors();
00016 
00017 unsigned int getTotalGPUMemorySizeInByte();
00018 
00019 unsigned int getFreeGPUMemorySizeInByte();
00020 
00021 void printGPUStatus();
00022 
00023 const std::vector<std::pair<unsigned int,unsigned int> > gpu_join_tids(std::vector<int>& join_column1, std::vector<int>& join_column2);
00024 
00025 //template <typename T>
00026 //const std::vector<unsigned int> gpu_selection_tids(const std::vector<T>& column, T value, ValueComparator comp);
00027 
00028         namespace gpu{
00029         
00030                 class GPU_Operators{
00031                         public:
00032                         /***************** relational operations on Columns which return lookup tables *****************/
00033                         static const GPU_PositionlistPtr sort(GPU_Base_ColumnPtr device_column, SortOrder order); 
00034                         static const GPU_PositionlistPtr selection(GPU_Base_ColumnPtr column, const boost::any& value_for_comparison, const ValueComparator comp);
00035                         //join algorithms
00036 //                      static const std::pair<GPU_Positionlist*,GPU_Positionlist*> gpu_join(GPU_Base_Column* join_column1, GPU_Base_Column* join_column2, JoinAlgorithm join_alg);
00037                         static const std::pair<GPU_Base_ColumnPtr,GPU_Base_ColumnPtr> groupby(GPU_Base_ColumnPtr grouping_column, 
00038                                                                                                                                                                                                                  GPU_Base_ColumnPtr aggregation_column,  
00039                                                                                                                                                                                                                  AggregationMethod agg_meth=SUM);
00040 
00041                         static const GPU_Base_ColumnPtr materializeIntermediateResult(GPU_Base_ColumnPtr column, GPU_PositionlistPtr pos_list); 
00042 
00043                         static const std::pair<GPU_PositionlistPtr,GPU_PositionlistPtr>  hash_join(GPU_Base_ColumnPtr join_column1, GPU_Base_ColumnPtr join_column2);
00044                         static const std::pair<GPU_PositionlistPtr,GPU_PositionlistPtr>  sort_merge_join(GPU_Base_ColumnPtr join_column1, GPU_Base_ColumnPtr join_column2);
00045                         static const std::pair<GPU_PositionlistPtr,GPU_PositionlistPtr>  nested_loop_join(GPU_Base_ColumnPtr join_column1, GPU_Base_ColumnPtr join_column2);
00046                 };
00047         
00048 //              #ifdef __CUDACC__
00049 //                      class GPU_Base_Column{};
00050 //              #endif 
00051         
00052         }; //end namespace gpu
00053 }; //end namespace CogaDB
00054