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      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 2008 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef	_SYS_TASK_H
     27 #define	_SYS_TASK_H
     28 
     29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     30 
     31 #ifdef	__cplusplus
     32 extern "C" {
     33 #endif
     34 
     35 #include <sys/param.h>
     36 #include <sys/types.h>
     37 #include <sys/rctl.h>
     38 
     39 #define	TASK_NORMAL	0x0	/* task may create tasks via settaskid() */
     40 #define	TASK_FINAL	0x1	/* task finalized, settaskid() will fail */
     41 #define	TASK_MASK	0x1	/* task flags mask */
     42 
     43 #define	TASK_PROJ_PURGE	0x100000	/* purge project.* rctl entities */
     44 #define	TASK_PROJ_MASK	0x100000
     45 
     46 #ifdef _KERNEL
     47 
     48 #include <sys/id_space.h>
     49 #include <sys/exacct_impl.h>
     50 #include <sys/kmem.h>
     51 
     52 struct proc;
     53 struct zone;
     54 
     55 typedef struct task {
     56 	taskid_t	tk_tkid;	/* task id			*/
     57 	uint_t		tk_flags;	/* task properties		*/
     58 	struct kproject	*tk_proj;	/* project membership		*/
     59 	uint_t		tk_hold_count;	/* number of members/observers	*/
     60 	struct proc	*tk_memb_list;	/* pointer to the first process */
     61 					/* in a doubly linked list of	*/
     62 					/* task members			*/
     63 	kmutex_t	tk_usage_lock;	/* lock to protect tk_*usage	*/
     64 	task_usage_t	*tk_usage;	/* total task resource usage	*/
     65 	task_usage_t	*tk_prevusage;	/* previous interval usage	*/
     66 	task_usage_t	*tk_zoneusage;	/* previous interval usage in zone */
     67 	rctl_set_t	*tk_rctls;	/* task's resource controls	*/
     68 	rctl_qty_t	tk_nlwps;	/* protected by			*/
     69 					/* tk_zone->zone_nlwps_lock	*/
     70 	rctl_qty_t	tk_nlwps_ctl;	/* protected by tk_rctls->rcs_lock */
     71 	rctl_qty_t	tk_cpu_time;	/* accumulated CPU seconds	*/
     72 	struct zone	*tk_zone;	/* zone task belongs to		*/
     73 	task_usage_t	*tk_inherited;	/* task resource usage		*/
     74 					/* inherited with the first	*/
     75 					/* member process		*/
     76 	rctl_qty_t	tk_cpu_ticks;	/* accumulated CPU ticks	*/
     77 	kmutex_t	tk_cpu_time_lock; /* accumulated CPU seconds lock */
     78 } task_t;
     79 
     80 extern task_t *task0p;
     81 extern rctl_hndl_t rc_task_lwps;
     82 extern rctl_hndl_t rc_task_cpu_time;
     83 
     84 extern void task_init(void);
     85 extern task_t *task_create(projid_t, struct zone *);
     86 extern void task_begin(task_t *, struct proc *);
     87 extern void task_attach(task_t *, struct proc *);
     88 extern void task_change(task_t *, struct proc *);
     89 extern void task_detach(struct proc *);
     90 extern task_t *task_join(task_t *, uint_t);
     91 extern task_t *task_hold_by_id(taskid_t);
     92 extern task_t *task_hold_by_id_zone(taskid_t, zoneid_t);
     93 extern void task_rele(task_t *);
     94 extern void task_hold(task_t *);
     95 extern void task_end(task_t *);
     96 extern rctl_qty_t task_cpu_time_incr(task_t *, rctl_qty_t);
     97 
     98 #else /* _KERNEL */
     99 
    100 struct task;
    101 
    102 extern taskid_t settaskid(projid_t, uint_t);
    103 extern taskid_t gettaskid(void);
    104 
    105 #endif /* _KERNEL */
    106 
    107 #ifdef	__cplusplus
    108 }
    109 #endif
    110 
    111 #endif	/* _SYS_TASK_H */
    112