91b6eb1140
This is intended as a type-safe alternative to obstacks and hand-written realloc constructs. The implementation avoids writing function pointers to the heap.
36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/* Increase the size of a dynamic array and clear the new part.
|
|
Copyright (C) 2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <dynarray.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
bool
|
|
__libc_dynarray_resize_clear (struct dynarray_header *list, size_t size,
|
|
void *scratch, size_t element_size)
|
|
{
|
|
size_t old_size = list->used;
|
|
if (!__libc_dynarray_resize (list, size, scratch, element_size))
|
|
return false;
|
|
/* __libc_dynarray_resize already checked for overflow. */
|
|
memset (list->array + (old_size * element_size), 0,
|
|
(size - old_size) * element_size);
|
|
return true;
|
|
}
|
|
libc_hidden_def (__libc_dynarray_resize_clear)
|