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

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Copyright (C) 1996-2018 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 Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the 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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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _SCHED_H

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#define _SCHED_H 1

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#include <features.h>

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/* Get type definitions. */

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#include <bits/types.h>

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#define __need_size_t

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#define __need_NULL

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#include <stddef.h>

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#include <bits/types/time_t.h>

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#include <bits/types/struct_timespec.h>

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#ifndef __USE_XOPEN2K

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# include <time.h>

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#endif

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#ifndef __pid_t_defined

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typedef __pid_t pid_t;

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# define __pid_t_defined

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#endif

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

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#include <bits/sched.h>

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#include <bits/cpu-set.h>

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/* Backward compatibility. */

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#define sched_priority sched_priority

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#define __sched_priority sched_priority

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__BEGIN_DECLS

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/* Set scheduling parameters for a process. */

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

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__THROW;

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

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

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

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extern int sched_setscheduler (__pid_t __pid, int __policy,

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const struct sched_param *__param) __THROW;

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

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extern int sched_getscheduler (__pid_t __pid) __THROW;

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/* Yield the processor. */

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extern int sched_yield (void) __THROW;

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

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extern int sched_get_priority_max (int __algorithm) __THROW;

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

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extern int sched_get_priority_min (int __algorithm) __THROW;

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

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

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#ifdef __USE_GNU

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/* Access macros for `cpu_set'. */

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# define CPU_SETSIZE __CPU_SETSIZE

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

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

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

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cpusetp)

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

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

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

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

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

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cpusetp)

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

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

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# define CPU_EQUAL(cpusetp1, cpusetp2) \

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__CPU_EQUAL_S (sizeof (cpu_set_t), cpusetp1, cpusetp2)

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# define CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \

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__CPU_EQUAL_S (setsize, cpusetp1, cpusetp2)

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# define CPU_AND(destset, srcset1, srcset2) \

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

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# define CPU_OR(destset, srcset1, srcset2) \

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

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# define CPU_XOR(destset, srcset1, srcset2) \

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

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

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

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

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

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

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

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# define CPU_ALLOC_SIZE(count) __CPU_ALLOC_SIZE (count)

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# define CPU_ALLOC(count) __CPU_ALLOC (count)

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# define CPU_FREE(cpuset) __CPU_FREE (cpuset)

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/* Set the CPU affinity for a task */

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extern int sched_setaffinity (__pid_t __pid, size_t __cpusetsize,

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const cpu_set_t *__cpuset) __THROW;

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/* Get the CPU affinity for a task */

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extern int sched_getaffinity (__pid_t __pid, size_t __cpusetsize,

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cpu_set_t *__cpuset) __THROW;

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#endif

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__END_DECLS

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#endif /* sched.h */

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