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//------------------------------------------------------------------------------
// GB_mex_test19: serialize/deserialize tests
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
#include "GB_mex_errors.h"
#define FREE_ALL ;
#define GET_DEEP_COPY ;
#define FREE_DEEP_COPY ;
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
//--------------------------------------------------------------------------
// startup GraphBLAS
//--------------------------------------------------------------------------
GrB_Info info ;
bool malloc_debug = GB_mx_get_global (true) ;
//--------------------------------------------------------------------------
// test serialize/deserialize for a dense matrix
//--------------------------------------------------------------------------
GrB_Matrix A = NULL, C = NULL ;
int n = 100 ;
OK (GrB_Matrix_new (&A, GrB_FP32, n, n)) ;
OK (GrB_assign (A, NULL, NULL, 1, GrB_ALL, n, GrB_ALL, n, NULL)) ;
OK (GrB_Matrix_setElement (A, 0, 0, 0)) ;
OK (GrB_wait (A, GrB_MATERIALIZE)) ;
// OK (GxB_print (A, 2)) ;
void *blob = NULL ;
uint64_t blob_size ;
// default compression
OK (GxB_Matrix_serialize (&blob, &blob_size, A, NULL)) ;
OK (GxB_Matrix_deserialize (&C, NULL, blob, blob_size, NULL)) ;
printf ("default compression, blob size %lu\n", blob_size) ;
CHECK (GB_mx_isequal (A, C, 0)) ;
GrB_free (&C) ;
// mangle the blob (set Cx_Sblocks [0] = -1)
GrB_Info expected = GrB_INVALID_OBJECT ;
ERR (GxB_Matrix_deserialize (&C, NULL, blob, blob_size - 4, NULL)) ;
size_t s =
sizeof (uint64_t)
+ sizeof (int32_t) * 14
+ sizeof (int64_t) * 11
+ sizeof (float) * 2 ;
int64_t Cx_Sblocks = -1 ;
memcpy (((uint8_t *) blob) + s, &Cx_Sblocks, sizeof (int64_t)) ;
ERR (GxB_Matrix_deserialize (&C, NULL, blob, blob_size, NULL)) ;
// free the blob
mxFree (blob) ;
// no compression
GrB_Descriptor desc ;
OK (GrB_Descriptor_new (&desc)) ;
OK (GxB_set (desc, GxB_COMPRESSION, GxB_COMPRESSION_NONE)) ;
OK (GxB_Matrix_serialize (&blob, &blob_size, A, desc)) ;
OK (GxB_Matrix_deserialize (&C, NULL, blob, blob_size, NULL)) ;
printf ("no compression, blob size %lu\n", blob_size) ;
CHECK (GB_mx_isequal (A, C, 0)) ;
GrB_free (&C) ;
// mangle the blob (set Cx_nblocks to 4)
s =
sizeof (uint64_t)
+ sizeof (int32_t) * 12
+ sizeof (int64_t) * 11
+ sizeof (float) * 2 ;
int32_t Cx_nblocks = 4 ;
memcpy (((uint8_t *) blob) + s, &Cx_nblocks, sizeof (int32_t)) ;
ERR (GxB_Matrix_deserialize (&C, NULL, blob, blob_size, NULL)) ;
// free the blob
mxFree (blob) ;
GrB_free (&desc) ;
//--------------------------------------------------------------------------
// finalize GraphBLAS
//--------------------------------------------------------------------------
GrB_free (&A) ;
GB_mx_put_global (true) ;
printf ("\nGB_mex_test19: all tests passed\n\n") ;
}
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