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author | RincewindsHat <12514511+RincewindsHat@users.noreply.github.com> | 2023-01-31 14:46:01 +0100 |
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committer | RincewindsHat <12514511+RincewindsHat@users.noreply.github.com> | 2023-01-31 14:46:01 +0100 |
commit | e8bd88d1fcded01ccd066572eeaae1b507989cb3 (patch) | |
tree | c8e7be6c07c6f635f6e803e6a6ba9e7a95fee7c0 /gl/malloc/dynarray_finalize.c | |
parent | 2ad962c13473607ca0d974bfaa516a0ed53ec73d (diff) | |
download | monitoring-plugins-e8bd88d1fcded01ccd066572eeaae1b507989cb3.tar.gz |
Sync with the latest Gnulib code 668c0b8ffa
Diffstat (limited to 'gl/malloc/dynarray_finalize.c')
-rw-r--r-- | gl/malloc/dynarray_finalize.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/gl/malloc/dynarray_finalize.c b/gl/malloc/dynarray_finalize.c new file mode 100644 index 00000000..673595a5 --- /dev/null +++ b/gl/malloc/dynarray_finalize.c | |||
@@ -0,0 +1,66 @@ | |||
1 | /* Copy the dynamically-allocated area to an explicitly-sized heap allocation. | ||
2 | Copyright (C) 2017-2023 Free Software Foundation, Inc. | ||
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 | <https://www.gnu.org/licenses/>. */ | ||
18 | |||
19 | #ifndef _LIBC | ||
20 | # include <libc-config.h> | ||
21 | #endif | ||
22 | |||
23 | #include <dynarray.h> | ||
24 | #include <stdlib.h> | ||
25 | #include <string.h> | ||
26 | |||
27 | bool | ||
28 | __libc_dynarray_finalize (struct dynarray_header *list, | ||
29 | void *scratch, size_t element_size, | ||
30 | struct dynarray_finalize_result *result) | ||
31 | { | ||
32 | if (__dynarray_error (list)) | ||
33 | /* The caller will reported the deferred error. */ | ||
34 | return false; | ||
35 | |||
36 | size_t used = list->used; | ||
37 | |||
38 | /* Empty list. */ | ||
39 | if (used == 0) | ||
40 | { | ||
41 | /* An empty list could still be backed by a heap-allocated | ||
42 | array. Free it if necessary. */ | ||
43 | if (list->array != scratch) | ||
44 | free (list->array); | ||
45 | *result = (struct dynarray_finalize_result) { NULL, 0 }; | ||
46 | return true; | ||
47 | } | ||
48 | |||
49 | size_t allocation_size = used * element_size; | ||
50 | void *heap_array = malloc (allocation_size); | ||
51 | if (heap_array != NULL) | ||
52 | { | ||
53 | /* The new array takes ownership of the strings. */ | ||
54 | if (list->array != NULL) | ||
55 | memcpy (heap_array, list->array, allocation_size); | ||
56 | if (list->array != scratch) | ||
57 | free (list->array); | ||
58 | *result = (struct dynarray_finalize_result) | ||
59 | { .array = heap_array, .length = used }; | ||
60 | return true; | ||
61 | } | ||
62 | else | ||
63 | /* The caller will perform the freeing operation. */ | ||
64 | return false; | ||
65 | } | ||
66 | libc_hidden_def (__libc_dynarray_finalize) | ||