projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| fd312537 | 1 | /* GNU Objective C Runtime @synchronized implementation |
| 8d9254fc | 2 | Copyright (C) 2010-2020 Free Software Foundation, Inc. |
| fd312537 NP |
3 | Contributed by Nicola Pero <nicola.pero@meta-innovation.com> |
| 4 | ||
| 5 | This file is part of GCC. | |
| 6 | ||
| 7 | GCC 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 3, or (at your option) | |
| 10 | any later version. | |
| 11 | ||
| 12 | GCC 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 | Under Section 7 of GPL version 3, you are granted additional | |
| 18 | permissions described in the GCC Runtime Library Exception, version | |
| 19 | 3.1, as published by the Free Software Foundation. | |
| 20 | ||
| 21 | You should have received a copy of the GNU General Public License and | |
| 22 | a copy of the GCC Runtime Library Exception along with this program; | |
| 23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 24 | <http://www.gnu.org/licenses/>. */ | |
| 25 | ||
| 26 | #ifndef __objc_sync_INCLUDE_GNU | |
| 27 | #define __objc_sync_INCLUDE_GNU | |
| 28 | ||
| 29 | #include "objc.h" | |
| 805a07f1 | 30 | #include "objc-decls.h" |
| fd312537 NP |
31 | |
| 32 | #ifdef __cplusplus | |
| 33 | extern "C" { | |
| 34 | #endif | |
| 35 | ||
| 36 | /* These functions are automatically called by @synchronized(). */ | |
| 37 | ||
| 38 | /* 'objc_sync_enter' is automatically called when entering a | |
| 39 | @synchronized() block. It locks the recursive lock associated with | |
| 40 | 'object'. If 'object' is nil, it does nothing. It returns | |
| 41 | OBJC_SYNC_SUCCESS on success; see the enumeration below for error | |
| 42 | values. | |
| 43 | ||
| 44 | Note that you should not rely on the behaviour when 'object' is nil | |
| 805a07f1 NP |
45 | because it could change. */ |
| 46 | objc_EXPORT int objc_sync_enter (id object); | |
| fd312537 NP |
47 | |
| 48 | /* 'objc_sync_exit' is automatically called when exiting from a | |
| 49 | @synchronized() block. It unlocks the recursive lock associated | |
| 50 | with 'object'. If 'object' is nil, it does nothing. It returns | |
| 51 | OBJC_SYNC_SUCCESS on success; see the enumeration below for error | |
| 805a07f1 NP |
52 | values. */ |
| 53 | objc_EXPORT int objc_sync_exit (id object); | |
| fd312537 NP |
54 | |
| 55 | /* All the possible return values for objc_sync_enter() and | |
| 56 | objc_sync_exit(). | |
| 57 | */ | |
| 58 | enum { | |
| 59 | OBJC_SYNC_SUCCESS = 0, | |
| 60 | OBJC_SYNC_NOT_OWNING_THREAD_ERROR = -1, | |
| 61 | OBJC_SYNC_TIMED_OUT = -2, | |
| 62 | OBJC_SYNC_NOT_INITIALIZED = -3 | |
| 63 | }; | |
| 64 | ||
| 65 | #ifdef __cplusplus | |
| 66 | } | |
| 67 | #endif | |
| 68 | ||
| 69 | #endif /* not __objc_sync_INCLUDE_GNU */ |