/* Definitions for POSIX 1003.1b-1993 (aka POSIX.4) scheduling interface.

   Copyright (C) 1996-2018 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/>.  */

#ifndef	_SCHED_H

#define	_SCHED_H	1

#include <features.h>

/* Get type definitions.  */

#include <bits/types.h>

#define __need_size_t

#define __need_NULL

#include <stddef.h>

#include <bits/types/time_t.h>

#include <bits/types/struct_timespec.h>

#ifndef __USE_XOPEN2K

# include <time.h>

#endif

#ifndef __pid_t_defined

typedef __pid_t pid_t;

# define __pid_t_defined

#endif

/* Get system specific constant and data structure definitions.  */

#include <bits/sched.h>

#include <bits/cpu-set.h>

/* Backward compatibility.  */

#define sched_priority    sched_priority

#define __sched_priority  sched_priority

__BEGIN_DECLS

/* Set scheduling parameters for a process.  */

extern int sched_setparam (__pid_t __pid, const struct sched_param *__param)

     __THROW;

/* Retrieve scheduling parameters for a particular process.  */

extern int sched_getparam (__pid_t __pid, struct sched_param *__param) __THROW;

/* Set scheduling algorithm and/or parameters for a process.  */

extern int sched_setscheduler (__pid_t __pid, int __policy,

			       const struct sched_param *__param) __THROW;

/* Retrieve scheduling algorithm for a particular purpose.  */

extern int sched_getscheduler (__pid_t __pid) __THROW;

/* Yield the processor.  */

extern int sched_yield (void) __THROW;

/* Get maximum priority value for a scheduler.  */

extern int sched_get_priority_max (int __algorithm) __THROW;

/* Get minimum priority value for a scheduler.  */

extern int sched_get_priority_min (int __algorithm) __THROW;

/* Get the SCHED_RR interval for the named process.  */

extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW;

#ifdef __USE_GNU

/* Access macros for `cpu_set'.  */

# define CPU_SETSIZE __CPU_SETSIZE

# define CPU_SET(cpu, cpusetp)	 __CPU_SET_S (cpu, sizeof (cpu_set_t), cpusetp)

# define CPU_CLR(cpu, cpusetp)	 __CPU_CLR_S (cpu, sizeof (cpu_set_t), cpusetp)

# define CPU_ISSET(cpu, cpusetp) __CPU_ISSET_S (cpu, sizeof (cpu_set_t), \

						cpusetp)

# define CPU_ZERO(cpusetp)	 __CPU_ZERO_S (sizeof (cpu_set_t), cpusetp)

# define CPU_COUNT(cpusetp)	 __CPU_COUNT_S (sizeof (cpu_set_t), cpusetp)

# define CPU_SET_S(cpu, setsize, cpusetp)   __CPU_SET_S (cpu, setsize, cpusetp)

# define CPU_CLR_S(cpu, setsize, cpusetp)   __CPU_CLR_S (cpu, setsize, cpusetp)

# define CPU_ISSET_S(cpu, setsize, cpusetp) __CPU_ISSET_S (cpu, setsize, \

							   cpusetp)

# define CPU_ZERO_S(setsize, cpusetp)	    __CPU_ZERO_S (setsize, cpusetp)

# define CPU_COUNT_S(setsize, cpusetp)	    __CPU_COUNT_S (setsize, cpusetp)

# define CPU_EQUAL(cpusetp1, cpusetp2) \

  __CPU_EQUAL_S (sizeof (cpu_set_t), cpusetp1, cpusetp2)

# define CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \

  __CPU_EQUAL_S (setsize, cpusetp1, cpusetp2)

# define CPU_AND(destset, srcset1, srcset2) \

  __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, &)

# define CPU_OR(destset, srcset1, srcset2) \

  __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, |)

# define CPU_XOR(destset, srcset1, srcset2) \

  __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, ^)

# define CPU_AND_S(setsize, destset, srcset1, srcset2) \

  __CPU_OP_S (setsize, destset, srcset1, srcset2, &)

# define CPU_OR_S(setsize, destset, srcset1, srcset2) \

  __CPU_OP_S (setsize, destset, srcset1, srcset2, |)

# define CPU_XOR_S(setsize, destset, srcset1, srcset2) \

  __CPU_OP_S (setsize, destset, srcset1, srcset2, ^)

# define CPU_ALLOC_SIZE(count) __CPU_ALLOC_SIZE (count)

# define CPU_ALLOC(count) __CPU_ALLOC (count)

# define CPU_FREE(cpuset) __CPU_FREE (cpuset)

/* Set the CPU affinity for a task */

extern int sched_setaffinity (__pid_t __pid, size_t __cpusetsize,

			      const cpu_set_t *__cpuset) __THROW;

/* Get the CPU affinity for a task */

extern int sched_getaffinity (__pid_t __pid, size_t __cpusetsize,

			      cpu_set_t *__cpuset) __THROW;

#endif

__END_DECLS

#endif /* sched.h */