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//------------------------------------------------------------------------------
// GB_mex_container: copy a matrix, by loading/unloading it into a container
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// copy a matrix/vector via load/unload of a container
#include "GB_mex.h"
#include "GB_mex_errors.h"
#include "../Source/container/GB_container.h"
#define USAGE "C = GB_mex_container (A)"
#undef FREE_ALL2
#define FREE_ALL2 \
{ \
GrB_Matrix_free_(&C) ; \
GxB_Container_free (&Container) ; \
}
#define OK2(method) \
{ \
info = (method) ; \
if (info != GrB_SUCCESS) \
{ \
FREE_ALL2 ; \
return (info) ; \
} \
}
//------------------------------------------------------------------------------
// matrix_method
//------------------------------------------------------------------------------
GrB_Info matrix_method (GrB_Matrix *C_handle, GrB_Matrix A) ;
GrB_Info matrix_method (GrB_Matrix *C_handle, GrB_Matrix A)
{
// test matrix variant
GrB_Info info ;
GrB_Matrix C = NULL ;
GxB_Container Container = NULL ;
OK2 (GxB_Container_new (&Container)) ;
OK2 (GrB_Matrix_dup (&C, A)) ;
OK2 (GrB_Matrix_wait (C, GrB_MATERIALIZE)) ;
OK2 (GxB_unload_Matrix_into_Container (C, Container, NULL)) ;
uint64_t len ;
OK2 (GrB_Vector_size (&len, Container->h)) ;
if (len == 0)
{
// printf ("\n----------------- h_empty:\n") ;
// test case when h_empty is true
GB_vector_reset (Container->h) ;
}
// printf ("\n----------------- GxB_load_Matrix_from_Container:\n") ;
OK2 (GxB_load_Matrix_from_Container (C, Container, NULL)) ;
(*C_handle) = C ;
GxB_Container_free (&Container) ;
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// vector_method
//------------------------------------------------------------------------------
GrB_Info vector_method (GrB_Vector *C_handle, GrB_Vector A) ;
GrB_Info vector_method (GrB_Vector *C_handle, GrB_Vector A)
{
// test vector variant
GrB_Info info ;
GrB_Vector C = NULL ;
GxB_Container Container ;
OK2 (GxB_Container_new (&Container)) ;
OK2 (GrB_Vector_dup (&C, A)) ;
OK2 (GrB_Vector_wait (C, GrB_MATERIALIZE)) ;
OK2 (GxB_unload_Vector_into_Container (C, Container, NULL)) ;
uint64_t len ;
OK2 (GrB_Vector_size (&len, Container->h)) ;
if (len == 0)
{
// printf ("\n----------------- h_empty:\n") ;
// test case when h_empty is true
GB_vector_reset (Container->h) ;
}
// printf ("\n----------------- GxB_load_Vector_from_Container:\n") ;
OK2 (GxB_load_Vector_from_Container (C, Container, NULL)) ;
(*C_handle) = C ;
GxB_Container_free (&Container) ;
return (GrB_SUCCESS) ;
}
//------------------------------------------------------------------------------
// GB_mex_container mexFunction
//------------------------------------------------------------------------------
#undef FREE_ALL
#define FREE_ALL \
{ \
GrB_Matrix_free_(&C) ; \
GrB_Matrix_free_(&A) ; \
GB_mx_put_global (true) ; \
}
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
GrB_Info info ;
bool malloc_debug = GB_mx_get_global (true) ;
GrB_Matrix C = NULL, A = NULL ;
// check inputs
if (nargout > 1 || nargin != 1)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
#define GET_DEEP_COPY ;
#define FREE_DEEP_COPY \
GrB_Matrix_free (&C) ;
// get a shallow copy of the input
A = GB_mx_mxArray_to_Matrix (pargin [0], "A input", false, true) ;
if (GB_VECTOR_OK (A))
{
// test vector variant
METHOD (vector_method ((GrB_Vector *) &C, (GrB_Vector) A)) ;
}
else
{
// test matrix variant
METHOD (matrix_method (&C, A)) ;
}
// return C as a struct and free the GraphBLAS C
pargout [0] = GB_mx_Matrix_to_mxArray (&C, "C output", true) ;
FREE_ALL ;
}
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