54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
/* 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. 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 */
|