freebsd-dev/sys/sys/rtprio.h
Pedro F. Giffuni c4e20cad00 sys/sys: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:01:59 +00:00

95 lines
3.0 KiB
C

/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1994, Henrik Vestergaard Draboel
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Henrik Vestergaard Draboel.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_RTPRIO_H_
#define _SYS_RTPRIO_H_
#include <sys/priority.h>
/*
* Process realtime-priority specifications to rtprio.
*/
/* priority types. Start at 1 to catch uninitialized fields. */
#define RTP_PRIO_REALTIME PRI_REALTIME /* real time process */
#define RTP_PRIO_NORMAL PRI_TIMESHARE /* time sharing process */
#define RTP_PRIO_IDLE PRI_IDLE /* idle process */
/* RTP_PRIO_FIFO is POSIX.1B SCHED_FIFO.
*/
#define RTP_PRIO_FIFO_BIT PRI_FIFO_BIT
#define RTP_PRIO_FIFO PRI_FIFO
#define RTP_PRIO_BASE(P) PRI_BASE(P)
#define RTP_PRIO_IS_REALTIME(P) PRI_IS_REALTIME(P)
#define RTP_PRIO_NEED_RR(P) PRI_NEED_RR(P)
/* priority range */
#define RTP_PRIO_MIN 0 /* Highest priority */
#define RTP_PRIO_MAX 31 /* Lowest priority */
/*
* rtprio() syscall functions
*/
#define RTP_LOOKUP 0
#define RTP_SET 1
#ifndef LOCORE
/*
* Scheduling class information.
*/
struct rtprio {
u_short type; /* scheduling class */
u_short prio;
};
#ifdef _KERNEL
struct thread;
int rtp_to_pri(struct rtprio *, struct thread *);
void pri_to_rtp(struct thread *, struct rtprio *);
#endif
#endif
#ifndef _KERNEL
#include <sys/cdefs.h>
__BEGIN_DECLS
int rtprio(int, pid_t, struct rtprio *);
int rtprio_thread(int, lwpid_t, struct rtprio *);
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_SYS_RTPRIO_H_ */