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53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* System V ABI compliant user-level context switching support. */
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#ifndef _UCONTEXT_H
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#define _UCONTEXT_H 1
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#include <features.h>
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/* Get machine dependent definition of data structures. */
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#include <sys/ucontext.h>
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__BEGIN_DECLS
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/* Get user context and store it in variable pointed to by UCP. */
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extern int getcontext (ucontext_t *__ucp) __THROW;
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/* Set user context from information of variable pointed to by UCP. */
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extern int setcontext (__const ucontext_t *__ucp) __THROW;
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/* Save current context in context variable pointed to by OUCP and set
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context from variable pointed to by UCP. */
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extern int swapcontext (ucontext_t *__oucp, __const ucontext_t *__ucp) __THROW;
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/* Manipulate user context UCP to continue with calling functions FUNC
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and the ARGC-1 parameters following ARGC when the context is used
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the next time in `setcontext' or `swapcontext'.
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We cannot say anything about the parameters FUNC takes; `void'
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is as good as any other choice. */
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extern void makecontext (ucontext_t *__ucp, void (*__func) (void),
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int __argc, ...) __THROW;
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__END_DECLS
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#endif /* ucontext.h */
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