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| 1 | /* Private libc-internal interface for mutex locks. |
|---|---|
| 2 | Copyright (C) 2015-2024 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 License as |
| 7 | published by the Free Software Foundation; either version 2.1 of the |
| 8 | 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; see the file COPYING.LIB. If |
| 17 | not, see <https://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _HTL_LIBC_LOCK_H |
| 20 | #define _HTL_LIBC_LOCK_H 1 |
| 21 | |
| 22 | #include_next <libc-lock.h> |
| 23 | #include <bits/cancelation.h> |
| 24 | |
| 25 | #undef __libc_cleanup_region_start |
| 26 | #undef __libc_cleanup_region_end |
| 27 | #undef __libc_cleanup_end |
| 28 | #undef __libc_cleanup_push |
| 29 | #undef __libc_cleanup_pop |
| 30 | |
| 31 | #define __libc_cleanup_region_start(DOIT, FCT, ARG) \ |
| 32 | { \ |
| 33 | struct __pthread_cancelation_handler **__handlers = NULL; \ |
| 34 | struct __pthread_cancelation_handler __handler; \ |
| 35 | int __registered = 0; \ |
| 36 | if (DOIT) \ |
| 37 | { \ |
| 38 | __handler.__handler = FCT; \ |
| 39 | __handler.__arg = ARG; \ |
| 40 | if (__pthread_get_cleanup_stack != NULL) \ |
| 41 | { \ |
| 42 | __handlers = __pthread_get_cleanup_stack (); \ |
| 43 | __handler.__next = *__handlers; \ |
| 44 | *__handlers = &__handler; \ |
| 45 | __registered = 1; \ |
| 46 | } \ |
| 47 | } \ |
| 48 | |
| 49 | #define __libc_cleanup_end(DOIT) \ |
| 50 | if (__registered) \ |
| 51 | *__handlers = __handler.__next; \ |
| 52 | if (DOIT) \ |
| 53 | __handler.__handler (__handler.__arg); \ |
| 54 | |
| 55 | #define __libc_cleanup_region_end(DOIT) \ |
| 56 | __libc_cleanup_end(DOIT) \ |
| 57 | } |
| 58 | |
| 59 | #define __libc_cleanup_push(fct, arg) __libc_cleanup_region_start (1, fct, arg) |
| 60 | #define __libc_cleanup_pop(execute) __libc_cleanup_region_end (execute) |
| 61 | |
| 62 | #if !IS_IN (libpthread) |
| 63 | # ifdef weak_extern |
| 64 | weak_extern (__pthread_get_cleanup_stack) |
| 65 | # else |
| 66 | # pragma weak __pthread_get_cleanup_stack |
| 67 | # endif |
| 68 | #endif |
| 69 | |
| 70 | #endif |
| 71 |
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