CountDistinctDescriptor Struct Reference

#include <CountDistinctDescriptor.h>

Public Member Functions
size_t	bitmapSizeBytes () const
size_t	bitmapPaddedSizeBytes () const

Public Attributes
CountDistinctImplType	impl_type_
int64_t	min_val
int64_t	bitmap_sz_bits
bool	approximate
ExecutorDeviceType	device_type
size_t	sub_bitmap_count

Detailed Description

Definition at line 41 of file CountDistinctDescriptor.h.

Member Function Documentation

size_t CountDistinctDescriptor::bitmapPaddedSizeBytes ( ) const

inline

Definition at line 57 of file CountDistinctDescriptor.h.

References align_to_int64(), bitmapSizeBytes(), device_type, GPU, and sub_bitmap_count.

Referenced by anonymous_namespace{QueryMemoryInitializer.cpp}::check_total_bitmap_memory(), count_distinct_set_union(), and partial_bitmap_union().

                                       {
    const auto effective_size = bitmapSizeBytes();
    const auto padded_size =
        (device_type == ExecutorDeviceType::GPU || sub_bitmap_count > 1)
            ? align_to_int64(effective_size)
            : effective_size;
    return padded_size * sub_bitmap_count;
  }

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size_t CountDistinctDescriptor::bitmapSizeBytes ( ) const

inline

Definition at line 49 of file CountDistinctDescriptor.h.

References approximate, Bitmap, bitmap_bits_to_bytes(), bitmap_sz_bits, CHECK, device_type, GPU, and impl_type_.

Referenced by bitmapPaddedSizeBytes(), count_distinct_set_size(), count_distinct_set_union(), and partial_bitmap_union().

                                 {
    CHECK(impl_type_ == CountDistinctImplType::Bitmap);
    const auto approx_reg_bytes =
        (device_type == ExecutorDeviceType::GPU ? sizeof(int32_t) : 1);
    return approximate ? (1 << bitmap_sz_bits) * approx_reg_bytes
                       : bitmap_bits_to_bytes(bitmap_sz_bits);
  }

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Member Data Documentation

bool CountDistinctDescriptor::approximate

Definition at line 45 of file CountDistinctDescriptor.h.

Referenced by bitmapSizeBytes(), ThriftSerializers::count_distinct_descriptor_from_thrift(), ThriftSerializers::count_distinct_descriptor_to_thrift(), count_distinct_set_size(), count_distinct_set_union(), operator<<(), and operator==().

int64_t CountDistinctDescriptor::bitmap_sz_bits

Definition at line 44 of file CountDistinctDescriptor.h.

Referenced by bitmapSizeBytes(), ThriftSerializers::count_distinct_descriptor_from_thrift(), ThriftSerializers::count_distinct_descriptor_to_thrift(), count_distinct_set_size(), count_distinct_set_union(), operator<<(), and operator==().

ExecutorDeviceType CountDistinctDescriptor::device_type

Definition at line 46 of file CountDistinctDescriptor.h.

Referenced by bitmapPaddedSizeBytes(), bitmapSizeBytes(), ThriftSerializers::count_distinct_descriptor_from_thrift(), ThriftSerializers::count_distinct_descriptor_to_thrift(), count_distinct_set_size(), count_distinct_set_union(), operator<<(), and operator==().

CountDistinctImplType CountDistinctDescriptor::impl_type_

Definition at line 42 of file CountDistinctDescriptor.h.

Referenced by RangeJoinHashTable::approximateTupleCount(), bitmapSizeBytes(), ThriftSerializers::count_distinct_descriptor_from_thrift(), ThriftSerializers::count_distinct_descriptor_to_thrift(), count_distinct_set_size(), count_distinct_set_union(), operator<<(), and operator==().

int64_t CountDistinctDescriptor::min_val

Definition at line 43 of file CountDistinctDescriptor.h.

Referenced by ThriftSerializers::count_distinct_descriptor_from_thrift(), ThriftSerializers::count_distinct_descriptor_to_thrift(), operator<<(), and operator==().

size_t CountDistinctDescriptor::sub_bitmap_count

Definition at line 47 of file CountDistinctDescriptor.h.

Referenced by bitmapPaddedSizeBytes(), ThriftSerializers::count_distinct_descriptor_from_thrift(), ThriftSerializers::count_distinct_descriptor_to_thrift(), count_distinct_set_size(), count_distinct_set_union(), operator<<(), and partial_bitmap_union().

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The documentation for this struct was generated from the following file:

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/Descriptors/CountDistinctDescriptor.h