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glibc/stdlib/ucontext.h
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/* Copyright (C) 1997-2016 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, see | |
<http://www.gnu.org/licenses/>. */ | |
/* 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) __THROWNL; | |
/* Set user context from information of variable pointed to by UCP. */ | |
extern int setcontext (const ucontext_t *__ucp) __THROWNL; | |
/* 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) __THROWNL; | |
/* 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 */ |