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688903eb | 1 | /* Copyright (C) 1997-2018 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
a5a0310d | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
a5a0310d | 17 | |
4009bf40 | 18 | #include <atomic.h> |
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19 | #include <stdlib.h> |
20 | #include <set-hooks.h> | |
66539a73 | 21 | #include <libc-internal.h> |
a5a0310d | 22 | |
3ce1f295 | 23 | #include "../libio/libioP.h" |
6906cea4 | 24 | |
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25 | DEFINE_HOOK (__libc_subfreeres, (void)); |
26 | ||
c877418f RM |
27 | symbol_set_define (__libc_freeres_ptrs); |
28 | ||
29 | void __libc_freeres_fn_section | |
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30 | __libc_freeres (void) |
31 | { | |
32 | /* This function might be called from different places. So better | |
33 | protect for multiple executions since these are fatal. */ | |
4a0f14bc | 34 | static long int already_called; |
a5a0310d | 35 | |
6c8dbf00 | 36 | if (!atomic_compare_and_exchange_bool_acq (&already_called, 1, 0)) |
6906cea4 | 37 | { |
6c8dbf00 | 38 | void *const *p; |
c877418f | 39 | |
6906cea4 | 40 | _IO_cleanup (); |
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41 | |
42 | RUN_HOOK (__libc_subfreeres, ()); | |
c877418f RM |
43 | |
44 | for (p = symbol_set_first_element (__libc_freeres_ptrs); | |
6c8dbf00 OB |
45 | !symbol_set_end_p (__libc_freeres_ptrs, p); ++p) |
46 | free (*p); | |
6906cea4 | 47 | } |
a5a0310d | 48 | } |
37ba7d66 | 49 | libc_hidden_def (__libc_freeres) |