Abdelrahman Said
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/*
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igraph library.
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Copyright (C) 2003-2025 The igraph development team <igraph@igraph.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef IGRAPH_MEMORY_H
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#define IGRAPH_MEMORY_H
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#include "igraph_decls.h"
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#include <stdint.h>
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#include <stdlib.h>
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IGRAPH_BEGIN_C_DECLS
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/* Helper macro to check if n*sizeof(t) overflows in IGRAPH_CALLOC and IGRAPH_REALLOC */
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#define IGRAPH_I_ALLOC_CHECK_OVERFLOW(n,t,expr) \
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(t*) ((0 <= (n) && ((size_t)(n)) <= SIZE_MAX / sizeof(t)) ? (expr) : NULL)
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#define IGRAPH_CALLOC(n,t) IGRAPH_I_ALLOC_CHECK_OVERFLOW(n, t, calloc(sizeof(t) * ((n) > 0 ? (n) : 1), 1))
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#define IGRAPH_MALLOC(n) malloc( (size_t) ((n) > 0 ? (n) : 1) )
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#define IGRAPH_REALLOC(p,n,t) IGRAPH_I_ALLOC_CHECK_OVERFLOW(n, t, realloc((void*)(p), sizeof(t) * ((n) > 0 ? (n) : 1)))
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#define IGRAPH_FREE(p) (free( (void *)(p) ), (p) = NULL)
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IGRAPH_EXPORT void *igraph_calloc(size_t count, size_t size);
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IGRAPH_EXPORT void *igraph_malloc(size_t size);
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IGRAPH_EXPORT void *igraph_realloc(void* ptr, size_t size);
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IGRAPH_EXPORT void igraph_free(void *ptr);
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IGRAPH_END_C_DECLS
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#endif
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