Concurrency::simple_partitioner Class Reference

The simple_partitioner class represents a static partitioning of the range iterated over by parallel_for. The partitioner divides the range into chunks such that each chunk has at least the number of iterations specified by the chunk size. More...

#include <ppl.h>

Public Member Functions
	simple_partitioner (_Size_type _Chunk_size)
	Constructs a simple_partitioner object. More...
	~simple_partitioner ()
	Destroys a simple_partitioner object. More...
template<class _Type >
_Type	_Get_num_chunks (_Type _Range_arg) const

Private Types
typedef unsigned long long	_Size_type

Private Attributes
_Size_type	_M_chunk_size

Detailed Description

The simple_partitioner class represents a static partitioning of the range iterated over by parallel_for. The partitioner divides the range into chunks such that each chunk has at least the number of iterations specified by the chunk size.

Member Typedef Documentation

typedef unsigned long long Concurrency::simple_partitioner::_Size_type

private

Constructor & Destructor Documentation

Concurrency::simple_partitioner::simple_partitioner ( _Size_type  _Chunk_size )

inlineexplicit

Constructs a simple_partitioner object.

Parameters

_M_chunk_size

Number of iterations per chunk.

                                                        : _M_chunk_size(_Chunk_size)
    {
        if (_Chunk_size == 0)
        {
            throw std::invalid_argument("_Chunk_size");
        }
    }

Concurrency::simple_partitioner::~simple_partitioner ( )

inline

Destroys a simple_partitioner object.

{}

Member Function Documentation

template<class _Type >

_Type Concurrency::simple_partitioner::_Get_num_chunks ( _Type  _Range_arg ) const

inline

    {
        static_assert(sizeof(_Type) <= sizeof(_Size_type), "Potential truncation of _Range_arg");
        _Size_type _Num_chunks = (static_cast<_Size_type>(_Range_arg) / _M_chunk_size);

        if (_Num_chunks == 0)
        {
           _Num_chunks = 1;
        }

        return static_cast<_Type>(_Num_chunks);
    }

Member Data Documentation

_Size_type Concurrency::simple_partitioner::_M_chunk_size

private

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

• VS2017/inc/ppl.h