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 * Copyright 2019 Joyent, Inc.
26 */
27
28 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
29 /* All Rights Reserved */
30
31
32 #ifndef _SYS_IA_H
33 #define _SYS_IA_H
34
35 #include <sys/types.h>
36 #include <sys/thread.h>
37
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41
42 #define dcmn_err if (ia_debug) cmn_err
43 #define IA_OFF_QUANTUM 1
44 #define IA_OFF_PRIORITY 20
45 #define iaumdpri (iapp->ia_umdpri)
46 #define iamedumdpri (ia_maxumdpri >> 1)
47
48 /*
49 * interactive dispatcher parameter table entry
50 */
51 typedef struct iadpent {
52 pri_t ia_globpri; /* global (class independent) priority */
53 long ia_quantum; /* time quantum given to procs at this level */
54 pri_t ia_tqexp; /* ia_umdpri assigned when proc at this level */
55 /* exceeds its time quantum */
56 pri_t ia_slpret; /* ia_umdpri assigned when proc at this level */
57 /* returns to user mode after sleeping */
58 short ia_maxwait; /* bumped to ia_lwait if more than ia_maxwait */
59 /* secs elapse before receiving full quantum */
60 short ia_lwait; /* ia_umdpri assigned if ia_dispwait exceeds */
61 /* ia_maxwait */
62 } iadpent_t;
63
64
65 /*
66 * time-sharing class specific thread structure
67 */
68 typedef struct iaproc {
69 long ia_timeleft; /* time remaining in procs quantum */
70 pri_t ia_cpupri; /* system controlled component of ia_umdpri */
71 pri_t ia_uprilim; /* user priority limit */
72 pri_t ia_upri; /* user priority */
73 pri_t ia_umdpri; /* user mode priority within ia class */
74 char ia_nice; /* nice value for compatibility */
75 unsigned char ia_flags; /* flags defined below */
76 short ia_dispwait; /* number of wall clock seconds since start */
77 /* of quantum (not reset upon preemption */
78 kthread_t *ia_tp; /* pointer to thread */
79 int *ia_pstatp; /* pointer to p_stat */
80 pri_t *ia_pprip; /* pointer to t_pri */
81 uint_t *ia_pflagp; /* pointer to p_flag */
82 struct iaproc *ia_next; /* link to next iaproc on list */
83 struct iaproc *ia_prev; /* link to previous iaproc on list */
84 int ia_mode; /* interactive on/off */
85 } iaproc_t;
86
87
88 /* flags */
89 /* Formerly: IAKPRI 0x01 - thread at kernel model priority */
90 #define IABACKQ 0x02 /* thread goes to back of disp q when preempted */
91 #define IASLEPT 0x04 /* thread had long-term suspend - give new slice */
92
93
94 #ifdef __cplusplus
95 }
96 #endif
97
98 #endif /* _SYS_IA_H */