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//------------------------------------------------------------------------------
// GB_clear_matrix_header.h: macros for allocating static headers
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// By default, many internal temporary matrices use statically allocated
// headers to reduce the number of calls to malloc/free. This works fine for
// matrices on the CPU, but the static headers do not get automatically
// transfered to the GPU. Only dynamically allocated headers, allocated by
// rmm_wrap_malloc, get transfered. Set this to 1 to turn off static headers
// (required for CUDA). Leave static headers enabled by default by leaving
// this commented out or setting GBNSTATIC to 0.
#ifndef GBNSTATIC
#if defined ( GRAPHBLAS_HAS_CUDA )
#define GBNSTATIC 1
#else
#define GBNSTATIC 0
#endif
#endif
#undef GB_CLEAR_MATRIX_HEADER
#if GBNSTATIC
// do not use any static headers
#define GB_CLEAR_MATRIX_HEADER(XX,XX_header_handle) \
{ \
size_t XX_size ; \
XX = GB_CALLOC_MEMORY (1, sizeof (struct GB_Matrix_opaque), \
&XX_size) ; \
if (XX == NULL) \
{ \
GB_FREE_ALL ; \
return (GrB_OUT_OF_MEMORY) ; \
} \
XX->header_size = XX_size ; \
XX->magic = GB_MAGIC2 ; \
}
#else
// use static headers
#define GB_CLEAR_MATRIX_HEADER(XX,XX_header_handle) \
{ \
XX = GB_clear_matrix_header (XX_header_handle) ; \
}
#endif
#ifndef GB_CLEAR_MATRIX_HEADER_H
#define GB_CLEAR_MATRIX_HEADER_H
static inline GrB_Matrix GB_clear_matrix_header // clear a static header
(
GrB_Matrix C // static header to clear
)
{
memset (C, 0, sizeof (struct GB_Matrix_opaque)) ;
return (C) ;
}
#endif
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