usr/src/uts/common/sys/ia.h

root/usr/src/uts/common/sys/ia.h
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1997-1998 by Sun Microsystems, Inc.
 * All rights reserved.
 * Copyright 2019 Joyent, Inc.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */


#ifndef _SYS_IA_H
#define _SYS_IA_H

#include <sys/types.h>
#include <sys/thread.h>

#ifdef  __cplusplus
extern "C" {
#endif

#define dcmn_err        if (ia_debug) cmn_err
#define IA_OFF_QUANTUM  1
#define IA_OFF_PRIORITY 20
#define iaumdpri        (iapp->ia_umdpri)
#define iamedumdpri     (ia_maxumdpri >> 1)

/*
 * interactive dispatcher parameter table entry
 */
typedef struct iadpent {
        pri_t   ia_globpri;     /* global (class independent) priority */
        long    ia_quantum;     /* time quantum given to procs at this level */
        pri_t   ia_tqexp;       /* ia_umdpri assigned when proc at this level */
                                /*   exceeds its time quantum */
        pri_t   ia_slpret;      /* ia_umdpri assigned when proc at this level */
                                /*  returns to user mode after sleeping */
        short   ia_maxwait;     /* bumped to ia_lwait if more than ia_maxwait */
                                /*  secs elapse before receiving full quantum */
        short   ia_lwait;       /* ia_umdpri assigned if ia_dispwait exceeds  */
                                /*  ia_maxwait */
} iadpent_t;


/*
 * time-sharing class specific thread structure
 */
typedef struct iaproc {
        long    ia_timeleft;    /* time remaining in procs quantum */
        pri_t   ia_cpupri;      /* system controlled component of ia_umdpri */
        pri_t   ia_uprilim;     /* user priority limit */
        pri_t   ia_upri;        /* user priority */
        pri_t   ia_umdpri;      /* user mode priority within ia class */
        char    ia_nice;        /* nice value for compatibility */
        unsigned char ia_flags; /* flags defined below */
        short   ia_dispwait;    /* number of wall clock seconds since start */
                                /*   of quantum (not reset upon preemption */
        kthread_t *ia_tp;       /* pointer to thread */
        int     *ia_pstatp;     /* pointer to p_stat */
        pri_t   *ia_pprip;      /* pointer to t_pri */
        uint_t  *ia_pflagp;     /* pointer to p_flag */
        struct iaproc *ia_next; /* link to next iaproc on list */
        struct iaproc *ia_prev; /* link to previous iaproc on list */
        int     ia_mode;        /* interactive on/off */
} iaproc_t;


/* flags */
#define IABACKQ 0x02    /* thread goes to back of disp q when preempted */
#define IASLEPT 0x04    /* thread had long-term suspend - give new slice */


#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_IA_H */
Illumos
