ft_array_view_access.h File Reference

#include <vector>
#include <cstdint>
#include <cstring>
#include "ft_array_iterator.h"
#include "ft_utility_macro.h"

Go to the source code of this file.

Macros
#define	ARRAY_VIEW_READ   0
#define	ARRAY_VIEW_WRITE   1
#define	VIEW_ACCESS_HELP_V(v_bu, v_st, a_bu, a_st, count_n, rw)
	Access a subset between v_bu (view buffer) and a_bu (array buffer) More...
#define	VIEW_ACCESS_HELP_P(v_bu, v_st, a_bu, a_st, count_n, rw, type_size)

Functions
template<class T >
int	ArrayViewAccessV (std::vector< T > &view_v, std::vector< T > &array_v, std::vector< unsigned long long > &array_size, std::vector< unsigned long long > &start, std::vector< unsigned long long > &end, int read_write_code)
	Access an view (subset) of an array. More...
template<class T >
int	ArrayViewAccessP (T *view_v, T *array_v, std::vector< unsigned long long > array_size, std::vector< unsigned long long > start, std::vector< unsigned long long > end, int read_write_code)

Macro Definition Documentation

ARRAY_VIEW_READ

#define ARRAY_VIEW_READ   0

Author: Bin Dong dbin@.nosp@m.lbl..nosp@m.gov Web: https://crd.lbl.gov/bin-dong Scientific Data Management Research Group Lawrence Berkeley National Laboratory

ARRAY_VIEW_WRITE

#define ARRAY_VIEW_WRITE   1

VIEW_ACCESS_HELP_P

#define VIEW_ACCESS_HELP_P	(		v_bu,
			v_st,
			a_bu,
			a_st,
			count_n,
			rw,
			type_size
	)

Value:

    {                                                                      \
        if (rw == ARRAY_VIEW_READ)                                         \
        {                                                                  \
            std::memcpy(v_bu + v_st, a_bu + a_st, count_n * type_size);    \
        }                                                                  \
        else                                                               \
        {                                                                  \
            std::memcpy(a_bu + a_st, v_bu + v_st, count_n * type_size);    \
        }                                                                  \
    }

VIEW_ACCESS_HELP_V

#define VIEW_ACCESS_HELP_V	(		v_bu,
			v_st,
			a_bu,
			a_st,
			count_n,
			rw
	)

Value:

    {                                                                                           \
        if (rw == ARRAY_VIEW_READ)                                                              \
        {                                                                                       \
            std::memcpy();                                                                      \
            std::copy(a_bu.begin() + a_st, a_bu.begin() + a_st + count_n, v_bu.begin() + v_st); \
        }                                                                                       \
        else                                                                                    \
        {                                                                                       \
            std::copy(v_bu.begin() + v_st, v_bu.begin() + v_st + count_n, a_bu.begin() + a_st); \
        }                                                                                       \
    }

Access a subset between v_bu (view buffer) and a_bu (array buffer)

Parameters

v_bu	view buffer
v_st	start of view buffer
a_bu	array buffer
a_st	start of array buffer
count_n	element to access
rm	flag to read or write, ARRAY_VIEW_READ and ARRAY_VIEW_WRITE

Function Documentation

ArrayViewAccessP()

template<class T >

int ArrayViewAccessP ( T *  view_v, T *  array_v, std::vector< unsigned long long >  array_size, std::vector< unsigned long long >  start, std::vector< unsigned long long >  end, int  read_write_code  )

inline

ArrayViewAccessV()

template<class T >

int ArrayViewAccessV ( std::vector< T > &  view_v, std::vector< T > &  array_v, std::vector< unsigned long long > &  array_size, std::vector< unsigned long long > &  start, std::vector< unsigned long long > &  end, int  read_write_code  )

inline

Access an view (subset) of an array.

Parameters

view_buffer	: pointer to the buffer for the view
array_buffer	: pointer to the buffer for the array
array_size	: the size for the array
start	: the start address of the view
end	: the end address of the view
read_write_code	: mode to read or write, e.g., ARRAY_VIEW_READ , ARRAY_VIEW_WRITE 1
element_size	: the size of each element data

Returns

int : non zero if works, otherwise failed