projects / thirdparty / glibc.git / blame
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|---|---|---|
| dfd2257a UD |
1 | /* Copyright (C) 1997 Free Software Foundation, Inc. |
| 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 | |
| 5 | modify it under the terms of the GNU Library General Public License as | |
| 6 | published by the Free Software Foundation; either version 2 of the | |
| 7 | License, or (at your option) any later version. | |
| 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 | |
| 12 | Library General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Library General Public | |
| 15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
| 16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 17 | Boston, MA 02111-1307, USA. */ | |
| 18 | ||
| 19 | /* System V ABI compliant user-level context switching support. */ | |
| 20 | ||
| 21 | #ifndef _UCONTEXT_H | |
| 22 | #define _UCONTEXT_H 1 | |
| 23 | ||
| 24 | #include <features.h> | |
| 25 | ||
| 26 | /* Get machine dependent definition of data structures. */ | |
| 27 | #include <sys/ucontext.h> | |
| 28 | ||
| 29 | __BEGIN_DECLS | |
| 30 | ||
| 31 | /* Get user context and store it in variable pointed to by UCP. */ | |
| 32 | extern int getcontext __P ((ucontext_t *__ucp)); | |
| 33 | ||
| 34 | /* Set user context from information of variable pointed to by UCP. */ | |
| 35 | extern int setcontext __P ((ucontext_t *__ucp)); | |
| 36 | ||
| 37 | /* Save current context in context variable pointed to by OUCP and set | |
| 38 | context from variable pointed to by UCP. */ | |
| 39 | extern int swapcontext __P ((ucontext_t *__oucp, ucontext_t *__ucp)); | |
| 40 | ||
| 41 | /* Manipulate user context UCP to continue with calling functions FUNC | |
| 42 | and the ARGC-1 parameters following ARGC when the context is used | |
| 43 | the next time in `setcontext' or `swapcontext'. | |
| 44 | ||
| 45 | We cannot say anything about the parameters FUNC takes; `void' | |
| 46 | is as good as any other choice. */ | |
| 47 | extern void makecontext __P ((ucontext_t *__ucp, void (*__func) __P ((void)), | |
| 48 | int __argc, ...)); | |
| 49 | ||
| 50 | __END_DECLS | |
| 51 | ||
| 52 | #endif /* ucontext.h */ |