xref: /titanic_41/usr/src/uts/common/sys/task.h (revision ff19e029e81c950f4e0f40f1f1ee1f7d8f8d8041)
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  * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
23  */
24 
25 #ifndef	_SYS_TASK_H
26 #define	_SYS_TASK_H
27 
28 #ifdef	__cplusplus
29 extern "C" {
30 #endif
31 
32 #include <sys/param.h>
33 #include <sys/types.h>
34 #include <sys/rctl.h>
35 
36 #define	TASK_NORMAL	0x0	/* task may create tasks via settaskid() */
37 #define	TASK_FINAL	0x1	/* task finalized, settaskid() will fail */
38 #define	TASK_MASK	0x1	/* task flags mask */
39 
40 #define	TASK_PROJ_PURGE	0x100000	/* purge project.* rctl entities */
41 #define	TASK_PROJ_MASK	0x100000
42 
43 #ifdef _KERNEL
44 
45 #include <sys/id_space.h>
46 #include <sys/exacct_impl.h>
47 #include <sys/kmem.h>
48 
49 struct proc;
50 struct zone;
51 
52 typedef struct task {
53 	taskid_t	tk_tkid;	/* task id			*/
54 	uint_t		tk_flags;	/* task properties		*/
55 	struct kproject	*tk_proj;	/* project membership		*/
56 	uint_t		tk_hold_count;	/* number of members/observers	*/
57 	struct proc	*tk_memb_list;	/* pointer to the first process */
58 					/* in a doubly linked list of	*/
59 					/* task members			*/
60 	kmutex_t	tk_usage_lock;	/* lock to protect tk_*usage	*/
61 	task_usage_t	*tk_usage;	/* total task resource usage	*/
62 	task_usage_t	*tk_prevusage;	/* previous interval usage	*/
63 	task_usage_t	*tk_zoneusage;	/* previous interval usage in zone */
64 	rctl_set_t	*tk_rctls;	/* task's resource controls	*/
65 	rctl_qty_t	tk_nlwps;	/* protected by			*/
66 					/* tk_zone->zone_nlwps_lock	*/
67 	rctl_qty_t	tk_nlwps_ctl;	/* protected by tk_rctls->rcs_lock */
68 	rctl_qty_t	tk_cpu_time;	/* accumulated CPU seconds	*/
69 	struct zone	*tk_zone;	/* zone task belongs to		*/
70 	task_usage_t	*tk_inherited;	/* task resource usage		*/
71 					/* inherited with the first	*/
72 					/* member process		*/
73 	rctl_qty_t	tk_cpu_ticks;	/* accumulated CPU ticks	*/
74 	kmutex_t	tk_cpu_time_lock; /* accumulated CPU seconds lock */
75 	rctl_qty_t	tk_nprocs;	/* protected by			*/
76 					/* tk_zone->zone_nlwps_lock	*/
77 	rctl_qty_t	tk_nprocs_ctl;	/* protected by tk_rctls->rcs_lock */
78 	kstat_t		*tk_nprocs_kstat; /* max-processes rctl kstat   */
79 	struct task	*tk_commit_next;  /* next task on task commit list */
80 } task_t;
81 
82 typedef struct task_kstat {
83 	kstat_named_t	ktk_zonename;
84 	kstat_named_t	ktk_usage;
85 	kstat_named_t	ktk_value;
86 } task_kstat_t;
87 
88 extern task_t *task0p;
89 extern rctl_hndl_t rc_task_lwps;
90 extern rctl_hndl_t rc_task_nprocs;
91 extern rctl_hndl_t rc_task_cpu_time;
92 
93 extern void task_init(void);
94 extern task_t *task_create(projid_t, struct zone *);
95 extern void task_begin(task_t *, struct proc *);
96 extern void task_attach(task_t *, struct proc *);
97 extern void task_change(task_t *, struct proc *);
98 extern void task_detach(struct proc *);
99 extern task_t *task_join(task_t *, uint_t);
100 extern task_t *task_hold_by_id(taskid_t);
101 extern task_t *task_hold_by_id_zone(taskid_t, zoneid_t);
102 extern void task_rele(task_t *);
103 extern void task_hold(task_t *);
104 extern void task_end(task_t *);
105 extern rctl_qty_t task_cpu_time_incr(task_t *, rctl_qty_t);
106 extern void task_commit_thread_init(void);
107 
108 #else /* _KERNEL */
109 
110 struct task;
111 
112 extern taskid_t settaskid(projid_t, uint_t);
113 extern taskid_t gettaskid(void);
114 
115 #endif /* _KERNEL */
116 
117 #ifdef	__cplusplus
118 }
119 #endif
120 
121 #endif	/* _SYS_TASK_H */
122