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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/datatype/datatype.h"
#include "ompi/datatype/convertor.h"
#include "ompi/datatype/datatype_internal.h"
#include "ompi/datatype/datatype_checksum.h"
#include "ompi/datatype/convertor_internal.h"
/*
* This function is used to copy data from one buffer to another. The assumption
* is that the number of bytes per element to copy at the source and destination
* are the same.
* count - number of instances of a given data-type to copy
* from - point to the source buffer
* to - pointer to the destination buffer
* from_len - length of source buffer (in bytes)
* to_len - length of destination buffer (in bytes)
* from_extent - extent of the source data type (in bytes)
* to_extent - extent of the destination data type (in bytes)
*
* Return value: Number of elements of type TYPE copied
*/
#define COPY_TYPE( TYPENAME, TYPE, COUNT ) \
static int copy_##TYPENAME( ompi_convertor_t *pConvertor, uint32_t count, \
char* from, size_t from_len, ptrdiff_t from_extent, \
char* to, size_t to_len, ptrdiff_t to_extent, \
ptrdiff_t *advance) \
{ \
uint32_t i; \
size_t remote_TYPE_size = sizeof(TYPE) * (COUNT); /* TODO */ \
size_t local_TYPE_size = (COUNT) * sizeof(TYPE); \
\
/* make sure the remote buffer is large enough to hold the data */ \
if( (remote_TYPE_size * count) > from_len ) { \
count = (uint32_t)(from_len / remote_TYPE_size); \
if( (count * remote_TYPE_size) != from_len ) { \
DUMP( "oops should I keep this data somewhere (excedent %d bytes)?\n", \
from_len - (count * remote_TYPE_size) ); \
} \
DUMP( "correct: copy %s count %d from buffer %p with length %d to %p space %d\n", \
#TYPE, count, from, from_len, to, to_len ); \
} else \
DUMP( " copy %s count %d from buffer %p with length %d to %p space %d\n", \
#TYPE, count, from, from_len, to, to_len ); \
\
if( (from_extent == (ptrdiff_t)local_TYPE_size) && \
(to_extent == (ptrdiff_t)remote_TYPE_size) ) { \
/* copy of contigous data at both source and destination */ \
MEMCPY( to, from, count * local_TYPE_size ); \
} else { \
/* source or destination are non-contigous */ \
for( i = 0; i < count; i++ ) { \
MEMCPY( to, from, local_TYPE_size ); \
to += to_extent; \
from += from_extent; \
} \
} \
*advance = count * from_extent; \
return count; \
}
/*
* This function is used to copy data from one buffer to another. The assumption
* is that the number of bytes per element to copy at the source and destination
* are the same.
* count - number of instances of a given data-type to copy
* from - point to the source buffer
* to - pointer to the destination buffer
* from_len - length of source buffer (in bytes)
* to_len - length of destination buffer (in bytes)
* from_extent - extent of the source data type (in bytes)
* to_extent - extent of the destination data type (in bytes)
*
* Return value: Number of elements of type TYPE copied
*/
#define COPY_CONTIGUOUS_BYTES( TYPENAME, COUNT ) \
static int copy_##TYPENAME##_##COUNT( ompi_convertor_t *pConvertor, uint32_t count, \
char* from, size_t from_len, ptrdiff_t from_extent, \
char* to, size_t to_len, ptrdiff_t to_extent, \
ptrdiff_t *advance ) \
{ \
uint32_t i; \
size_t remote_TYPE_size = (size_t)(COUNT); /* TODO */ \
size_t local_TYPE_size = (size_t)(COUNT); \
\
if( (remote_TYPE_size * count) > from_len ) { \
count = (uint32_t)(from_len / remote_TYPE_size); \
if( (count * remote_TYPE_size) != from_len ) { \
DUMP( "oops should I keep this data somewhere (excedent %d bytes)?\n", \
from_len - (count * remote_TYPE_size) ); \
} \
DUMP( "correct: copy %s count %d from buffer %p with length %d to %p space %d\n", \
#TYPENAME, count, from, from_len, to, to_len ); \
} else \
DUMP( " copy %s count %d from buffer %p with length %d to %p space %d\n", \
#TYPENAME, count, from, from_len, to, to_len ); \
\
if( (from_extent == (ptrdiff_t)local_TYPE_size) && \
(to_extent == (ptrdiff_t)remote_TYPE_size) ) { \
MEMCPY( to, from, count * local_TYPE_size ); \
} else { \
for( i = 0; i < count; i++ ) { \
MEMCPY( to, from, local_TYPE_size ); \
to += to_extent; \
from += from_extent; \
} \
} \
*advance = count * from_extent; \
return count; \
}
/* set up copy functions for the basic C MPI data types */
COPY_TYPE( char, char, 1 )
COPY_TYPE( short, short, 1 )
COPY_TYPE( int, int, 1 )
COPY_TYPE( float, float, 1 )
COPY_TYPE( long, long, 1 )
COPY_TYPE( double, double, 1 )
COPY_TYPE( long_long, long long, 1 )
COPY_TYPE( long_double, long double, 1 )
COPY_TYPE( complex_float, ompi_complex_float_t, 1 )
COPY_TYPE( complex_double, ompi_complex_double_t, 1 )
COPY_TYPE( complex_long_double, ompi_complex_long_double_t, 1 )
COPY_TYPE( wchar, wchar_t, 1 )
COPY_TYPE( 2int, int, 2 )
COPY_TYPE( 2float, float, 2 )
COPY_TYPE( 2double, double, 2 )
COPY_TYPE( 2complex_float, ompi_complex_float_t, 2 )
COPY_TYPE( 2complex_double, ompi_complex_double_t, 2 )
#if OMPI_SIZEOF_FORTRAN_LOGICAL == 1 || SIZEOF_BOOL == 1
#define REQUIRE_COPY_BYTES_1 1
#else
#define REQUIRE_COPY_BYTES_1 0
#endif
#if OMPI_SIZEOF_FORTRAN_LOGICAL == 2 || SIZEOF_BOOL == 2
#define REQUIRE_COPY_BYTES_2 1
#else
#define REQUIRE_COPY_BYTES_2 0
#endif
#if OMPI_SIZEOF_FORTRAN_LOGICAL == 4 || SIZEOF_BOOL == 4
#define REQUIRE_COPY_BYTES_4 1
#else
#define REQUIRE_COPY_BYTES_4 0
#endif
#if (SIZEOF_FLOAT + SIZEOF_INT) == 8 || (SIZEOF_LONG + SIZEOF_INT) == 8 || SIZEOF_BOOL == 8
#define REQUIRE_COPY_BYTES_8 1
#else
#define REQUIRE_COPY_BYTES_8 0
#endif
#if (SIZEOF_DOUBLE + SIZEOF_INT) == 12 || (SIZEOF_LONG + SIZEOF_INT) == 12
#define REQUIRE_COPY_BYTES_12 1
#else
#define REQUIRE_COPY_BYTES_12 0
#endif
#if (SIZEOF_LONG_DOUBLE + SIZEOF_INT) == 16
#define REQUIRE_COPY_BYTES_16 1
#else
#define REQUIRE_COPY_BYTES_16 0
#endif
#if (SIZEOF_LONG_DOUBLE + SIZEOF_INT) == 20
#define REQUIRE_COPY_BYTES_20 1
#else
#define REQUIRE_COPY_BYTES_20 0
#endif
#if REQUIRE_COPY_BYTES_1
COPY_CONTIGUOUS_BYTES( bytes, 1 )
#endif /* REQUIRE_COPY_BYTES_1 */
#if REQUIRE_COPY_BYTES_2
COPY_CONTIGUOUS_BYTES( bytes, 2 )
#endif /* REQUIRE_COPY_BYTES_2 */
#if REQUIRE_COPY_BYTES_4
COPY_CONTIGUOUS_BYTES( bytes, 4 )
#endif /* REQUIRE_COPY_BYTES_4 */
#if REQUIRE_COPY_BYTES_8
COPY_CONTIGUOUS_BYTES( bytes, 8 )
#endif /* REQUIRE_COPY_BYTES_8 */
#if REQUIRE_COPY_BYTES_12
COPY_CONTIGUOUS_BYTES( bytes, 12 )
#endif /* REQUIRE_COPY_BYTES_12 */
#if REQUIRE_COPY_BYTES_16
COPY_CONTIGUOUS_BYTES( bytes, 16 )
#endif /* REQUIRE_COPY_BYTES_16 */
#if REQUIRE_COPY_BYTES_20
COPY_CONTIGUOUS_BYTES( bytes, 20 )
#endif /* REQUIRE_COPY_BYTES_20 */
/* table of predefined copy functions - one for each MPI type */
conversion_fct_t ompi_ddt_copy_functions[DT_MAX_PREDEFINED] = {
(conversion_fct_t)NULL, /* DT_LOOP */
(conversion_fct_t)NULL, /* DT_END_LOOP */
(conversion_fct_t)NULL, /* DT_LB */
(conversion_fct_t)NULL, /* DT_UB */
(conversion_fct_t)copy_char, /* DT_CHAR */
(conversion_fct_t)copy_char, /* DT_CHARACTER */
(conversion_fct_t)copy_char, /* DT_UNSIGNED_CHAR */
(conversion_fct_t)copy_char, /* DT_SIGNED_CHAR */
(conversion_fct_t)copy_char, /* DT_BYTE */
(conversion_fct_t)copy_short, /* DT_SHORT */
(conversion_fct_t)copy_short, /* DT_UNSIGNED_SHORT */
(conversion_fct_t)copy_int, /* DT_INT */
(conversion_fct_t)copy_int, /* DT_UNSIGNED_INT */
(conversion_fct_t)copy_long, /* DT_LONG */
(conversion_fct_t)copy_long, /* DT_UNSIGNED_LONG */
(conversion_fct_t)copy_long_long, /* DT_LONG_LONG_INT */
(conversion_fct_t)copy_long_long, /* DT_UNSIGNED_LONG_LONG */
(conversion_fct_t)copy_float, /* DT_FLOAT */
(conversion_fct_t)copy_double, /* DT_DOUBLE */
(conversion_fct_t)copy_long_double, /* DT_LONG_DOUBLE */
(conversion_fct_t)NULL, /* DT_PACKED */
(conversion_fct_t)copy_wchar, /* DT_WCHAR */
#if SIZEOF_BOOL == 1
(conversion_fct_t)copy_bytes_1, /* DT_CXX_BOOL */
#elif SIZEOF_BOOL == 4
(conversion_fct_t)copy_bytes_4, /* DT_CXX_BOOL */
#elif SIZEOF_BOOL == 8
(conversion_fct_t)copy_bytes_8, /* DT_CXX_BOOL */
#else
#error Complete me please
#endif
#if OMPI_SIZEOF_FORTRAN_LOGICAL == 1
(conversion_fct_t)copy_bytes_1, /* DT_LOGIC */
#elif OMPI_SIZEOF_FORTRAN_LOGICAL == 4
(conversion_fct_t)copy_bytes_4, /* DT_LOGIC */
#elif 1 /* always, some compiler complain if there is not value */
NULL, /* DT_LOGIC */
#endif
(conversion_fct_t)copy_int, /* DT_INTEGER */
(conversion_fct_t)copy_float, /* DT_REAL */
(conversion_fct_t)copy_double, /* DT_DBLPREC */
(conversion_fct_t)copy_complex_float, /* DT_COMPLEX_FLOAT */
(conversion_fct_t)copy_complex_double, /* DT_COMPLEX_DOUBLE */
(conversion_fct_t)copy_complex_long_double, /* DT_COMPLEX_LONG_DOUBLE */
(conversion_fct_t)copy_2int, /* DT_2INT */
(conversion_fct_t)copy_2int, /* DT_2INTEGER */
(conversion_fct_t)copy_2float, /* DT_2REAL */
(conversion_fct_t)copy_2double, /* DT_2DBLPREC */
(conversion_fct_t)copy_2complex_float, /* DT_2COMPLEX */
(conversion_fct_t)copy_2complex_double, /* DT_2DOUBLE_COMPLEX */
#if (SIZEOF_FLOAT + SIZEOF_INT) == 8
(conversion_fct_t)copy_bytes_8, /* DT_FLOAT_INT */
#else
#error Complete me please
#endif
#if (SIZEOF_DOUBLE + SIZEOF_INT) == 12
(conversion_fct_t)copy_bytes_12, /* DT_DOUBLE_INT */
#else
#error Complete me please
#endif
#if (SIZEOF_LONG_DOUBLE + SIZEOF_INT) == 12
(conversion_fct_t)copy_bytes_12, /* DT_LONG_DOUBLE_INT */
#elif (SIZEOF_LONG_DOUBLE + SIZEOF_INT) == 16
(conversion_fct_t)copy_bytes_16, /* DT_LONG_DOUBLE_INT */
#elif (SIZEOF_LONG_DOUBLE + SIZEOF_INT) == 20
(conversion_fct_t)copy_bytes_20, /* DT_LONG_DOUBLE_INT */
#else
#error Complete me please
#endif
#if (SIZEOF_LONG + SIZEOF_INT) == 8
(conversion_fct_t)copy_bytes_8, /* DT_LONG_INT */
#elif (SIZEOF_LONG + SIZEOF_INT) == 12
(conversion_fct_t)copy_bytes_12, /* DT_LONG_INT */
#else
#error Complete me please
#endif
(conversion_fct_t)NULL, /* DT_SHORT_INT */
(conversion_fct_t)NULL, /* DT_UNAVAILABLE */
};
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