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

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1997-1998 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #ifndef _SYS_IA_H
  32 #define _SYS_IA_H
  33
  34 #pragma ident   "%Z%%M% %I%     %E% SMI"
  35
  36 #include <sys/types.h>
  37 #include <sys/thread.h>
  38
  39 #ifdef  __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 #define dcmn_err        if (ia_debug) cmn_err
  44 #define IA_OFF_QUANTUM  1
  45 #define IA_OFF_PRIORITY 20
  46 #define iaumdpri        (iapp->ia_umdpri)
  47 #define iamedumdpri     (ia_maxumdpri >> 1)
  48
  49 /*
  50  * interactive dispatcher parameter table entry
  51  */
  52 typedef struct iadpent {
  53         pri_t   ia_globpri;     /* global (class independent) priority */
  54         long    ia_quantum;     /* time quantum given to procs at this level */
  55         pri_t   ia_tqexp;       /* ia_umdpri assigned when proc at this level */
  56                                 /*   exceeds its time quantum */
  57         pri_t   ia_slpret;      /* ia_umdpri assigned when proc at this level */
  58                                 /*  returns to user mode after sleeping */
  59         short   ia_maxwait;     /* bumped to ia_lwait if more than ia_maxwait */
  60                                 /*  secs elapse before receiving full quantum */
  61         short   ia_lwait;       /* ia_umdpri assigned if ia_dispwait exceeds  */
  62                                 /*  ia_maxwait */
  63 } iadpent_t;
  64
  65
  66 /*
  67  * time-sharing class specific thread structure
  68  */
  69 typedef struct iaproc {
  70         long    ia_timeleft;    /* time remaining in procs quantum */
  71         pri_t   ia_cpupri;      /* system controlled component of ia_umdpri */
  72         pri_t   ia_uprilim;     /* user priority limit */
  73         pri_t   ia_upri;        /* user priority */
  74         pri_t   ia_umdpri;      /* user mode priority within ia class */
  75         char    ia_nice;        /* nice value for compatibility */
  76         unsigned char ia_flags; /* flags defined below */
  77         short   ia_dispwait;    /* number of wall clock seconds since start */
  78                                 /*   of quantum (not reset upon preemption */
  79         kthread_t *ia_tp;       /* pointer to thread */
  80         int     *ia_pstatp;     /* pointer to p_stat */
  81         pri_t   *ia_pprip;      /* pointer to t_pri */
  82         uint_t  *ia_pflagp;     /* pointer to p_flag */
  83         struct iaproc *ia_next; /* link to next iaproc on list */
  84         struct iaproc *ia_prev; /* link to previous iaproc on list */
  85         int     ia_mode;        /* interactive on/off */
  86 } iaproc_t;
  87
  88
  89 /* flags */
  90 #define IAKPRI  0x01    /* thread at kernel mode priority */
  91 #define IABACKQ 0x02    /* thread goes to back of disp q when preempted */
  92 #define IASLEPT 0x04    /* thread had long-term suspend - give new slice */
  93
  94
  95 #ifdef  __cplusplus
  96 }
  97 #endif
  98
  99 #endif  /* _SYS_IA_H */