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[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / bits / sched.h

/* Definitions of constants and data structure for POSIX 1003.1b-1993
   scheduling interface.
   Copyright (C) 1996, 1997, 1998, 1999 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.  */

#ifndef __need_schedparam

#ifndef _SCHED_H
# error "Never include <bits/sched.h> directly; use <sched.h> instead."
#endif


/* Scheduling algorithms.  */
#define SCHED_OTHER	0
#define SCHED_FIFO	1
#define SCHED_RR	2

#ifdef __USE_MISC
/* Cloning flags.  */
# define CSIGNAL       0x000000ff /* Signal mask to be sent at exit.  */
# define CLONE_VM      0x00000100 /* Set if VM shared between processes.  */
# define CLONE_FS      0x00000200 /* Set if fs info shared between processes.  */
# define CLONE_FILES   0x00000400 /* Set if open files shared between processes.  */
# define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared.  */
# define CLONE_PID     0x00001000 /* Set if pid shared.  */
# define CLONE_PTRACE  0x00002000 /* Set if tracing continues on the child.  */
# define CLONE_VFORK   0x00004000 /* Set if the parent wants the child to
				     wake it up on mm_release.  */
#endif

/* The official definition.  */
struct sched_param
  {
    int sched_priority;
  };

__BEGIN_DECLS

/* Clone current process.  */
#ifdef __USE_MISC
extern int clone (int (*__fn) (void *__arg), void *__child_stack,
		  int __flags, void *__arg) __THROW;
#endif

__END_DECLS

#endif	/* need schedparam */

#if !defined __defined_schedparam \
    && (defined __need_schedparam || defined _SCHED_H)
# define __defined_schedparam	1
/* Data structure to describe a process' schedulability.  */
struct __sched_param
  {
    int sched_priority;
  };
# undef __need_schedparam
#endif