xref: /illumos-gate/usr/src/uts/common/sys/ts.h (revision 4de2612967d06c4fdbf524a62556a1e8118a006f)
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_TS_H
32 #define	_SYS_TS_H
33 
34 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.5 */
35 
36 #include <sys/types.h>
37 #include <sys/thread.h>
38 
39 #ifdef	__cplusplus
40 extern "C" {
41 #endif
42 
43 /*
44  * time-sharing dispatcher parameter table entry
45  */
46 typedef struct tsdpent {
47 	pri_t	ts_globpri;	/* global (class independent) priority */
48 	int	ts_quantum;	/* time quantum given to procs at this level */
49 	pri_t	ts_tqexp;	/* ts_umdpri assigned when proc at this level */
50 				/*   exceeds its time quantum */
51 	pri_t	ts_slpret;	/* ts_umdpri assigned when proc at this level */
52 				/*  returns to user mode after sleeping */
53 	short	ts_maxwait;	/* bumped to ts_lwait if more than ts_maxwait */
54 				/*  secs elapse before receiving full quantum */
55 	short	ts_lwait;	/* ts_umdpri assigned if ts_dispwait exceeds  */
56 				/*  ts_maxwait */
57 } tsdpent_t;
58 
59 
60 /*
61  * time-sharing class specific thread structure
62  */
63 typedef struct tsproc {
64 	int		ts_timeleft;	/* time remaining in procs quantum */
65 	uint_t		ts_dispwait;	/* wall clock seconds since start */
66 				/*   of quantum (not reset upon preemption */
67 	pri_t	ts_cpupri;	/* system controlled component of ts_umdpri */
68 	pri_t	ts_uprilim;	/* user priority limit */
69 	pri_t	ts_upri;	/* user priority */
70 	pri_t	ts_umdpri;	/* user mode priority within ts class */
71 	char	ts_nice;	/* nice value for compatibility */
72 	char	ts_boost;	/* interactive priority offset */
73 	unsigned char ts_flags;	/* flags defined below */
74 	kthread_t *ts_tp;	/* pointer to thread */
75 	struct tsproc *ts_next;	/* link to next tsproc on list */
76 	struct tsproc *ts_prev;	/* link to previous tsproc on list */
77 } tsproc_t;
78 
79 
80 /* flags */
81 #define	TSKPRI	0x01	/* thread at kernel mode priority */
82 #define	TSBACKQ	0x02	/* thread goes to back of disp q when preempted */
83 #define	TSIA	0x04	/* thread is interactive */
84 #define	TSIASET	0x08	/* interactive thread is "on" */
85 #define	TSIANICED	0x10	/* interactive thread has been niced */
86 
87 #ifdef	__cplusplus
88 }
89 #endif
90 
91 #endif	/* _SYS_TS_H */
92