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- /* Definitions for POSIX 1003.1b-1993 (aka POSIX.4) scheduling interface.
- Copyright (C) 1996,1997,1999,2001-2004,2007 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
- #include <stddef.h>
- #define __need_timespec
- #include <time.h>
- /* Get system specific constant and data structure definitions. */
- #include <bits/sched.h>
- /* Define the real names for the elements of `struct sched_param'. */
- #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;
- #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
- /* 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;
- # ifdef _LIBC
- extern int __clone (int (*__fn) (void *__arg), void *__child_stack,
- int __flags, void *__arg, ...);
- extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
- size_t __child_stack_size, int __flags, void *__arg, ...);
- # endif
- #endif
- __END_DECLS
- #endif /* sched.h */
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