xref: /illumos-gate/usr/src/uts/common/sys/ts.h (revision bde334a8dbd66dfa70ce4d7fc9dcad6e1ae45fe4)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
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 #include <sys/types.h>
35 #include <sys/thread.h>
36 #include <sys/cpucaps.h>
37 
38 #ifdef	__cplusplus
39 extern "C" {
40 #endif
41 
42 /*
43  * time-sharing dispatcher parameter table entry
44  */
45 typedef struct tsdpent {
46 	pri_t	ts_globpri;	/* global (class independent) priority */
47 	int	ts_quantum;	/* time quantum given to procs at this level */
48 	pri_t	ts_tqexp;	/* ts_umdpri assigned when proc at this level */
49 				/*   exceeds its time quantum */
50 	pri_t	ts_slpret;	/* ts_umdpri assigned when proc at this level */
51 				/*  returns to user mode after sleeping */
52 	short	ts_maxwait;	/* bumped to ts_lwait if more than ts_maxwait */
53 				/*  secs elapse before receiving full quantum */
54 	short	ts_lwait;	/* ts_umdpri assigned if ts_dispwait exceeds  */
55 				/*  ts_maxwait */
56 } tsdpent_t;
57 
58 #ifdef _KERNEL
59 /*
60  * time-sharing class specific thread structure
61  */
62 typedef struct tsproc {
63 	int	ts_timeleft;	/* time remaining in procs quantum	*/
64 	uint_t	ts_dispwait;	/* wall clock seconds since start	*/
65 				/* of quantum (not reset upon preempt)	*/
66 	pri_t	ts_cpupri;	/* system controlled component of ts_umdpri */
67 	pri_t	ts_uprilim;	/* user priority limit			*/
68 	pri_t	ts_upri;	/* user priority			*/
69 	pri_t	ts_umdpri;	/* user mode priority within ts class	*/
70 	pri_t	ts_scpri;	/* remembered priority, for schedctl	*/
71 	char	ts_nice;	/* nice value for compatibility		*/
72 	char	ts_boost;	/* interactive priority offset		*/
73 	uchar_t	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 	caps_sc_t ts_caps;	/* CPU caps specific data		*/
78 } tsproc_t;
79 
80 /* flags */
81 #define	TSKPRI		0x01	/* thread at kernel mode priority	*/
82 #define	TSBACKQ		0x02	/* thread goes to back of dispq if 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 #define	TSRESTORE	0x20	/* thread was not preempted, due to schedctl */
87 				/* restore priority from ts_scpri	*/
88 
89 #endif /* _KERNEL */
90 
91 #ifdef	__cplusplus
92 }
93 #endif
94 
95 #endif	/* _SYS_TS_H */
96