projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 1997-2019 Free Software Foundation, Inc. |
| dfd2257a UD |
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. | |
| dfd2257a UD |
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. |
| dfd2257a | 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/>. */ | |
| dfd2257a UD |
17 | |
| 18 | /* System V ABI compliant user-level context switching support. */ | |
| 19 | ||
| 20 | #ifndef _UCONTEXT_H | |
| 21 | #define _UCONTEXT_H 1 | |
| 22 | ||
| 23 | #include <features.h> | |
| 24 | ||
| e27f41ba L |
25 | /* Get definition of __INDIRECT_RETURN. */ |
| 26 | #include <bits/indirect-return.h> | |
| 27 | ||
| dfd2257a UD |
28 | /* Get machine dependent definition of data structures. */ |
| 29 | #include <sys/ucontext.h> | |
| 30 | ||
| 31 | __BEGIN_DECLS | |
| 32 | ||
| 33 | /* Get user context and store it in variable pointed to by UCP. */ | |
| edc5984d | 34 | extern int getcontext (ucontext_t *__ucp) __THROWNL; |
| dfd2257a UD |
35 | |
| 36 | /* Set user context from information of variable pointed to by UCP. */ | |
| a784e502 | 37 | extern int setcontext (const ucontext_t *__ucp) __THROWNL; |
| dfd2257a UD |
38 | |
| 39 | /* Save current context in context variable pointed to by OUCP and set | |
| 40 | context from variable pointed to by UCP. */ | |
| 98cbe360 | 41 | extern int swapcontext (ucontext_t *__restrict __oucp, |
| e27f41ba L |
42 | const ucontext_t *__restrict __ucp) |
| 43 | __THROWNL __INDIRECT_RETURN; | |
| dfd2257a UD |
44 | |
| 45 | /* Manipulate user context UCP to continue with calling functions FUNC | |
| 46 | and the ARGC-1 parameters following ARGC when the context is used | |
| 47 | the next time in `setcontext' or `swapcontext'. | |
| 48 | ||
| 49 | We cannot say anything about the parameters FUNC takes; `void' | |
| 50 | is as good as any other choice. */ | |
| c1422e5b | 51 | extern void makecontext (ucontext_t *__ucp, void (*__func) (void), |
| 57769839 | 52 | int __argc, ...) __THROW; |
| dfd2257a UD |
53 | |
| 54 | __END_DECLS | |
| 55 | ||
| 56 | #endif /* ucontext.h */ |