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
29extern "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
49struct proc;
50struct zone;
51
52typedef 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
82typedef 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
88extern task_t *task0p;
89extern rctl_hndl_t rc_task_lwps;
90extern rctl_hndl_t rc_task_nprocs;
91extern rctl_hndl_t rc_task_cpu_time;
92
93extern void task_init(void);
94extern task_t *task_create(projid_t, struct zone *);
95extern void task_begin(task_t *, struct proc *);
96extern void task_attach(task_t *, struct proc *);
97extern void task_change(task_t *, struct proc *);
98extern void task_detach(struct proc *);
99extern task_t *task_join(task_t *, uint_t);
100extern task_t *task_hold_by_id(taskid_t);
101extern task_t *task_hold_by_id_zone(taskid_t, zoneid_t);
102extern void task_rele(task_t *);
103extern void task_hold(task_t *);
104extern void task_end(task_t *);
105extern rctl_qty_t task_cpu_time_incr(task_t *, rctl_qty_t);
106extern void task_commit_thread_init(void);
107
108#else /* _KERNEL */
109
110struct task;
111
112extern taskid_t settaskid(projid_t, uint_t);
113extern taskid_t gettaskid(void);
114
115#endif /* _KERNEL */
116
117#ifdef	__cplusplus
118}
119#endif
120
121#endif	/* _SYS_TASK_H */
122