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fdc6156ec7
Internally the strbuf_local_buf(x) macro uses sizeof(x) to determine the size of the buffer, but this will give the wrong behaviour if x is a pointer (char *x), not an array (char x[]). With this change, invoking it with a pointer will cause a compile error. The safety check makes use of the GCC extensions: __builtin_object_size() and __attribute__((alloc_size(n)). Under non-GCC compilers, the safety check will not be performed.
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/*
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Serval DNA memory management
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Copyright (C) 2012 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __SERVAL_DNA__MEM_H
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#define __SERVAL_DNA__MEM_H
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#include <sys/types.h>
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#include "log.h"
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// #define MALLOC_PARANOIA
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#ifdef MALLOC_PARANOIA
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#define malloc(X) _serval_debug_malloc(X,__WHENCE__)
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#define calloc(X,Y) _serval_debug_calloc(X,Y,__WHENCE__)
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#define free(X) _serval_debug_free(X,__WHENCE__)
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void *_serval_debug_malloc(unsigned int bytes, struct __sourceloc whence) __attribute__ ((malloc, alloc_size(1)));
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void *_serval_debug_calloc(unsigned int bytes, unsigned int count, struct __sourceloc whence) __attribute__ ((malloc, alloc_size(1)));
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void _serval_debug_free(void *p, struct __sourceloc whence);
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#endif
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/* Equivalent to malloc(3), but logs an error before returning NULL.
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*
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* @author Andrew Bettison <andrew@servalproject.com>
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*/
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void *_emalloc(struct __sourceloc, size_t bytes) __attribute__ ((malloc, alloc_size(2), returns_nonnull));
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/* Equivalent to realloc(3), but logs an error before returning NULL.
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*
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* @author Andrew Bettison <andrew@servalproject.com>
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*/
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void *_erealloc(struct __sourceloc __whence, void *ptr, size_t bytes) __attribute__ ((alloc_size(3), returns_nonnull));
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/* Equivalent to malloc(3) followed by memset(3) to zerofill, but logs an error
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* before returning NULL.
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*
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* @author Andrew Bettison <andrew@servalproject.com>
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*/
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void *_emalloc_zero(struct __sourceloc, size_t bytes) __attribute__ ((malloc, alloc_size(2), returns_nonnull));
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/* Equivalent to strdup(3)/strndup(3), but logs an error before returning NULL.
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*
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* Why aren't these in str.h? Because str.c must not depend on log.h/log.c! str.c is used in link
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* contexts where log.c is not present.
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*
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* @author Andrew Bettison <andrew@servalproject.com>
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*/
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char *_str_edup(struct __sourceloc, const char *str) __attribute__ ((malloc, returns_nonnull));
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char *_strn_edup(struct __sourceloc, const char *str, size_t len) __attribute__ ((malloc, returns_nonnull));
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#define emalloc(bytes) _emalloc(__HERE__, (bytes))
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#define erealloc(ptr, bytes) _erealloc(__HERE__, (ptr), (bytes))
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#define emalloc_zero(bytes) _emalloc_zero(__HERE__, (bytes))
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#define str_edup(str) _str_edup(__HERE__, (str))
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#define strn_edup(str, len) _strn_edup(__HERE__, (str), (len))
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#endif // __SERVAL_DNA__MEM_H
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