]>
Commit | Line | Data |
---|---|---|
91b6eb11 | 1 | /* Copy the dynamically-allocated area to an explicitly-sized heap allocation. |
04277e02 | 2 | Copyright (C) 2017-2019 Free Software Foundation, Inc. |
91b6eb11 FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <dynarray.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | ||
23 | bool | |
24 | __libc_dynarray_finalize (struct dynarray_header *list, | |
25 | void *scratch, size_t element_size, | |
26 | struct dynarray_finalize_result *result) | |
27 | { | |
28 | if (__dynarray_error (list)) | |
29 | /* The caller will reported the deferred error. */ | |
30 | return false; | |
31 | ||
32 | size_t used = list->used; | |
33 | ||
34 | /* Empty list. */ | |
35 | if (used == 0) | |
36 | { | |
37 | /* An empty list could still be backed by a heap-allocated | |
38 | array. Free it if necessary. */ | |
39 | if (list->array != scratch) | |
40 | free (list->array); | |
41 | *result = (struct dynarray_finalize_result) { NULL, 0 }; | |
42 | return true; | |
43 | } | |
44 | ||
45 | size_t allocation_size = used * element_size; | |
46 | void *heap_array = malloc (allocation_size); | |
47 | if (heap_array != NULL) | |
48 | { | |
49 | /* The new array takes ownership of the strings. */ | |
50 | if (list->array != NULL) | |
51 | memcpy (heap_array, list->array, allocation_size); | |
52 | if (list->array != scratch) | |
53 | free (list->array); | |
54 | *result = (struct dynarray_finalize_result) | |
55 | { .array = heap_array, .length = used }; | |
56 | return true; | |
57 | } | |
58 | else | |
59 | /* The caller will perform the freeing operation. */ | |
60 | return false; | |
61 | } | |
62 | libc_hidden_def (__libc_dynarray_finalize) |