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/* sched.h: scheduler interface for Cygwin
Copyright 2001 Red Hat, Inc.
Written by Robert Collins <rbtcollins@hotmail.com>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
/* Written from the opengroup specifications */
#ifndef _SCHED_H
#define _SCHED_H
#include <time.h>
/* we return -1 and set errno on failure */
#define SCHED_FIFO 1
#define SCHED_RR 2
#define SCHED_OTHER 3
struct sched_param
{
int sched_priority;
};
#ifdef __cplusplus
extern "C" {
#endif
/* max priority for policy */
int sched_get_priority_max (int);
/* min priority for policy */
int sched_get_priority_min (int);
/* get sched params for process */
int sched_getparam (pid_t, struct sched_param *);
/* get the scheduler for pid */
int sched_getscheduler (pid_t);
/* get the time quantum for pid */
int sched_rr_get_interval (pid_t, struct timespec *);
/* set the scheduling parameters */
int sched_setparam (pid_t, const struct sched_param *);
/* set the scheduler */
int sched_setscheduler (pid_t, int, const struct sched_param *);
/* yield the cpu */
int sched_yield (void);
#if defined(__INSIDE_CYGWIN__)
/* These are private helper functions used to calculate scheduler settings and
* validate parameters */
/* check parameters for validity */
int valid_sched_parameters(const struct sched_param *);
/* set a single thread's priority */
int sched_set_thread_priority(HANDLE thread, int priority);
#endif /* INSIDE_CYGWIN */
#ifdef __cplusplus
}
#endif
#endif /* _SCHED_H */
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