lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Memory handling for the scope data structures. |
| 2 | Copyright (C) 2009-2015 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 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | #include <ldsodefs.h> |
| 21 | #include <sysdep-cancel.h> |
| 22 | |
| 23 | |
| 24 | int |
| 25 | _dl_scope_free (void *old) |
| 26 | { |
| 27 | struct dl_scope_free_list *fsl; |
| 28 | #define DL_SCOPE_FREE_LIST_SIZE (sizeof (fsl->list) / sizeof (fsl->list[0])) |
| 29 | |
| 30 | if (RTLD_SINGLE_THREAD_P) |
| 31 | free (old); |
| 32 | else if ((fsl = GL(dl_scope_free_list)) == NULL) |
| 33 | { |
| 34 | GL(dl_scope_free_list) = fsl = malloc (sizeof (*fsl)); |
| 35 | if (fsl == NULL) |
| 36 | { |
| 37 | THREAD_GSCOPE_WAIT (); |
| 38 | free (old); |
| 39 | return 1; |
| 40 | } |
| 41 | else |
| 42 | { |
| 43 | fsl->list[0] = old; |
| 44 | fsl->count = 1; |
| 45 | } |
| 46 | } |
| 47 | else if (fsl->count < DL_SCOPE_FREE_LIST_SIZE) |
| 48 | fsl->list[fsl->count++] = old; |
| 49 | else |
| 50 | { |
| 51 | THREAD_GSCOPE_WAIT (); |
| 52 | while (fsl->count > 0) |
| 53 | free (fsl->list[--fsl->count]); |
| 54 | return 1; |
| 55 | } |
| 56 | return 0; |
| 57 | } |