/* * 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 2008 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 #include #include #include #include #include #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_t *, id_t, void *, cred_t *, void *); void (*cl_exitclass)(void *); int (*cl_canexit)(kthread_t *, cred_t *); int (*cl_fork)(kthread_t *, kthread_t *, void *); void (*cl_forkret)(kthread_t *, kthread_t *); void (*cl_parmsget)(kthread_t *, void *); int (*cl_parmsset)(kthread_t *, void *, id_t, cred_t *); void (*cl_stop)(kthread_t *, int, int); void (*cl_exit)(kthread_t *); void (*cl_active)(kthread_t *); void (*cl_inactive)(kthread_t *); pri_t (*cl_swapin)(kthread_t *, int); pri_t (*cl_swapout)(kthread_t *, int); void (*cl_trapret)(kthread_t *); void (*cl_preempt)(kthread_t *); void (*cl_setrun)(kthread_t *); void (*cl_sleep)(kthread_t *); void (*cl_tick)(kthread_t *); void (*cl_wakeup)(kthread_t *); int (*cl_donice)(kthread_t *, cred_t *, int, int *); pri_t (*cl_globpri)(kthread_t *); void (*cl_set_process_group)(pid_t, pid_t, pid_t); void (*cl_yield)(kthread_t *); int (*cl_doprio)(kthread_t *, cred_t *, int, int *); } 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_t *); extern void parmsget(kthread_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_DOPRIO(t, cr, inc, ret) \ (*(t)->t_clfuncs->cl_doprio)(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 */