xref: /illumos-gate/usr/src/uts/common/sys/ia.h (revision 6a0b1217)
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 #define	IABACKQ	0x02	/* thread goes to back of disp q when preempted */
90 #define	IASLEPT	0x04	/* thread had long-term suspend - give new slice */
91 
92 
93 #ifdef	__cplusplus
94 }
95 #endif
96 
97 #endif	/* _SYS_IA_H */
98