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1479465f GJ |
1 | /* |
2 | * libdpkg - Debian packaging suite library routines | |
3 | * nfmalloc.c - non-freeing malloc, used for in-core database | |
4 | * | |
5 | * Copyright © 1994,1995 Ian Jackson <ijackson@chiark.greenend.org.uk> | |
6 | * | |
7 | * This is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <https://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <compat.h> | |
23 | ||
24 | #include <string.h> | |
25 | #include <stdlib.h> | |
26 | #include <obstack.h> | |
27 | ||
28 | #include <dpkg/i18n.h> | |
29 | #include <dpkg/dpkg.h> | |
30 | #include <dpkg/dpkg-db.h> | |
31 | ||
32 | #define obstack_chunk_alloc m_malloc | |
33 | #define obstack_chunk_free free | |
34 | ||
35 | static struct obstack db_obs; | |
36 | static bool dbobs_init = false; | |
37 | ||
38 | /* We use lots of mem, so use a large chunk. */ | |
39 | #define CHUNK_SIZE 8192 | |
40 | ||
41 | #define OBSTACK_INIT if (!dbobs_init) { nfobstack_init(); } | |
42 | ||
43 | static void nfobstack_init(void) { | |
44 | obstack_init(&db_obs); | |
45 | dbobs_init = true; | |
46 | obstack_chunk_size(&db_obs) = CHUNK_SIZE; | |
47 | } | |
48 | ||
49 | void * | |
50 | nfmalloc(size_t size) | |
51 | { | |
52 | OBSTACK_INIT; | |
53 | return obstack_alloc(&db_obs, size); | |
54 | } | |
55 | ||
56 | char *nfstrsave(const char *string) { | |
57 | OBSTACK_INIT; | |
58 | return obstack_copy0 (&db_obs, string, strlen(string)); | |
59 | } | |
60 | ||
61 | char * | |
62 | nfstrnsave(const char *string, size_t size) | |
63 | { | |
64 | OBSTACK_INIT; | |
65 | return obstack_copy0(&db_obs, string, size); | |
66 | } | |
67 | ||
68 | void nffreeall(void) { | |
69 | if (dbobs_init) { | |
70 | obstack_free(&db_obs, NULL); | |
71 | dbobs_init = false; | |
72 | } | |
73 | } |