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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#ifndef _SYS_CLASS_H
#define _SYS_CLASS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/t_lock.h>
#include <sys/cred.h>
#include <sys/thread.h>
#include <sys/priocntl.h>
#include <sys/mutex.h>
#include <sys/uio.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* NOTE: Developers making use of the scheduler class switch mechanism
* to develop scheduling class modules should be aware that the
* architecture is not frozen and the kernel interface for scheduling
* class modules may change in future releases of System V. Support
* for the current interface is not guaranteed and class modules
* developed to this interface may require changes in order to work
* with future releases of the system.
*/
/*
* three different ops vectors are bundled together, here.
* one is for each of the fundamental objects acted upon
* by these operators: procs, threads, and the class manager itself.
*/
typedef struct class_ops {
int (*cl_admin)(caddr_t, cred_t *);
int (*cl_getclinfo)(void *);
int (*cl_parmsin)(void *);
int (*cl_parmsout)(void *, pc_vaparms_t *);
int (*cl_vaparmsin)(void *, pc_vaparms_t *);
int (*cl_vaparmsout)(void *, pc_vaparms_t *);
int (*cl_getclpri)(pcpri_t *);
int (*cl_alloc)(void **, int);
void (*cl_free)(void *);
} class_ops_t;
typedef struct thread_ops {
int (*cl_enterclass)(kthread_id_t, id_t, void *, cred_t *, void *);
void (*cl_exitclass)(void *);
int (*cl_canexit)(kthread_id_t, cred_t *);
int (*cl_fork)(kthread_id_t, kthread_id_t, void *);
void (*cl_forkret)(kthread_id_t, kthread_id_t);
void (*cl_parmsget)(kthread_id_t, void *);
int (*cl_parmsset)(kthread_id_t, void *, id_t, cred_t *);
void (*cl_stop)(kthread_id_t, int, int);
void (*cl_exit)(kthread_id_t);
void (*cl_active)(kthread_id_t);
void (*cl_inactive)(kthread_id_t);
pri_t (*cl_swapin)(kthread_id_t, int);
pri_t (*cl_swapout)(kthread_id_t, int);
void (*cl_trapret)(kthread_id_t);
void (*cl_preempt)(kthread_id_t);
void (*cl_setrun)(kthread_id_t);
void (*cl_sleep)(kthread_id_t);
void (*cl_tick)(kthread_id_t);
void (*cl_wakeup)(kthread_id_t);
int (*cl_donice)(kthread_id_t, cred_t *, int, int *);
pri_t (*cl_globpri)(kthread_id_t);
void (*cl_set_process_group)(pid_t, pid_t, pid_t);
void (*cl_yield)(kthread_id_t);
} thread_ops_t;
typedef struct classfuncs {
class_ops_t sclass;
thread_ops_t thread;
} classfuncs_t;
typedef struct sclass {
char *cl_name; /* class name */
/* class specific initialization function */
pri_t (*cl_init)(id_t, int, classfuncs_t **);
classfuncs_t *cl_funcs; /* pointer to classfuncs structure */
krwlock_t *cl_lock; /* class structure read/write lock */
int cl_count; /* # of threads trying to load class */
} sclass_t;
#define STATIC_SCHED (krwlock_t *)0xffffffff
#define LOADABLE_SCHED(s) ((s)->cl_lock != STATIC_SCHED)
#define SCHED_INSTALLED(s) ((s)->cl_funcs != NULL)
#define ALLOCATED_SCHED(s) ((s)->cl_lock != NULL)
#ifdef _KERNEL
extern int nclass; /* number of configured scheduling classes */
extern char *defaultclass; /* default class for newproc'd processes */
extern struct sclass sclass[]; /* the class table */
extern kmutex_t class_lock; /* lock protecting class table */
extern int loaded_classes; /* number of classes loaded */
extern pri_t minclsyspri;
extern id_t syscid; /* system scheduling class ID */
extern id_t defaultcid; /* "default" class id; see dispadmin(1M) */
extern int alloc_cid(char *, id_t *);
extern int scheduler_load(char *, sclass_t *);
extern int getcid(char *, id_t *);
extern int getcidbyname(char *, id_t *);
extern int parmsin(pcparms_t *, pc_vaparms_t *);
extern int parmsout(pcparms_t *, pc_vaparms_t *);
extern int parmsset(pcparms_t *, kthread_id_t);
extern void parmsget(kthread_id_t, pcparms_t *);
extern int vaparmsout(char *, pcparms_t *, pc_vaparms_t *, uio_seg_t);
#endif
#define CL_ADMIN(clp, uaddr, reqpcredp) \
(*(clp)->cl_funcs->sclass.cl_admin)(uaddr, reqpcredp)
#define CL_ENTERCLASS(t, cid, clparmsp, credp, bufp) \
(sclass[cid].cl_funcs->thread.cl_enterclass) (t, cid, \
(void *)clparmsp, credp, bufp)
#define CL_EXITCLASS(cid, clprocp)\
(sclass[cid].cl_funcs->thread.cl_exitclass) ((void *)clprocp)
#define CL_CANEXIT(t, cr) (*(t)->t_clfuncs->cl_canexit)(t, cr)
#define CL_FORK(tp, ct, bufp) (*(tp)->t_clfuncs->cl_fork)(tp, ct, bufp)
#define CL_FORKRET(t, ct) (*(t)->t_clfuncs->cl_forkret)(t, ct)
#define CL_GETCLINFO(clp, clinfop) \
(*(clp)->cl_funcs->sclass.cl_getclinfo)((void *)clinfop)
#define CL_GETCLPRI(clp, clprip) \
(*(clp)->cl_funcs->sclass.cl_getclpri)(clprip)
#define CL_PARMSGET(t, clparmsp) \
(*(t)->t_clfuncs->cl_parmsget)(t, (void *)clparmsp)
#define CL_PARMSIN(clp, clparmsp) \
(clp)->cl_funcs->sclass.cl_parmsin((void *)clparmsp)
#define CL_PARMSOUT(clp, clparmsp, vaparmsp) \
(clp)->cl_funcs->sclass.cl_parmsout((void *)clparmsp, vaparmsp)
#define CL_VAPARMSIN(clp, clparmsp, vaparmsp) \
(clp)->cl_funcs->sclass.cl_vaparmsin((void *)clparmsp, vaparmsp)
#define CL_VAPARMSOUT(clp, clparmsp, vaparmsp) \
(clp)->cl_funcs->sclass.cl_vaparmsout((void *)clparmsp, vaparmsp)
#define CL_PARMSSET(t, clparmsp, cid, curpcredp) \
(*(t)->t_clfuncs->cl_parmsset)(t, (void *)clparmsp, cid, curpcredp)
#define CL_PREEMPT(tp) (*(tp)->t_clfuncs->cl_preempt)(tp)
#define CL_SETRUN(tp) (*(tp)->t_clfuncs->cl_setrun)(tp)
#define CL_SLEEP(tp) (*(tp)->t_clfuncs->cl_sleep)(tp)
#define CL_STOP(t, why, what) (*(t)->t_clfuncs->cl_stop)(t, why, what)
#define CL_EXIT(t) (*(t)->t_clfuncs->cl_exit)(t)
#define CL_ACTIVE(t) (*(t)->t_clfuncs->cl_active)(t)
#define CL_INACTIVE(t) (*(t)->t_clfuncs->cl_inactive)(t)
#define CL_SWAPIN(t, flags) (*(t)->t_clfuncs->cl_swapin)(t, flags)
#define CL_SWAPOUT(t, flags) (*(t)->t_clfuncs->cl_swapout)(t, flags)
#define CL_TICK(t) (*(t)->t_clfuncs->cl_tick)(t)
#define CL_TRAPRET(t) (*(t)->t_clfuncs->cl_trapret)(t)
#define CL_WAKEUP(t) (*(t)->t_clfuncs->cl_wakeup)(t)
#define CL_DONICE(t, cr, inc, ret) \
(*(t)->t_clfuncs->cl_donice)(t, cr, inc, ret)
#define CL_GLOBPRI(t) (*(t)->t_clfuncs->cl_globpri)(t)
#define CL_SET_PROCESS_GROUP(t, s, b, f) \
(*(t)->t_clfuncs->cl_set_process_group)(s, b, f)
#define CL_YIELD(tp) (*(tp)->t_clfuncs->cl_yield)(tp)
#define CL_ALLOC(pp, cid, flag) \
(sclass[cid].cl_funcs->sclass.cl_alloc) (pp, flag)
#define CL_FREE(cid, bufp) (sclass[cid].cl_funcs->sclass.cl_free) (bufp)
#ifdef __cplusplus
}
#endif
#endif /* _SYS_CLASS_H */
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