| /* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* System V ABI compliant user-level context switching support. */ |
| |
| #ifndef _UCONTEXT_H |
| #define _UCONTEXT_H 1 |
| |
| #include <features.h> |
| |
| /* Get machine dependent definition of data structures. */ |
| #include <sys/ucontext.h> |
| |
| __BEGIN_DECLS |
| |
| /* Get user context and store it in variable pointed to by UCP. */ |
| extern int getcontext (ucontext_t *__ucp) __THROW; |
| |
| /* Set user context from information of variable pointed to by UCP. */ |
| extern int setcontext (__const ucontext_t *__ucp) __THROW; |
| |
| /* Save current context in context variable pointed to by OUCP and set |
| context from variable pointed to by UCP. */ |
| extern int swapcontext (ucontext_t *__restrict __oucp, |
| __const ucontext_t *__restrict __ucp) __THROW; |
| |
| /* Manipulate user context UCP to continue with calling functions FUNC |
| and the ARGC-1 parameters following ARGC when the context is used |
| the next time in `setcontext' or `swapcontext'. |
| |
| We cannot say anything about the parameters FUNC takes; `void' |
| is as good as any other choice. */ |
| extern void makecontext (ucontext_t *__ucp, void (*__func) (void), |
| int __argc, ...) __THROW; |
| |
| __END_DECLS |
| |
| #endif /* ucontext.h */ |
