schedctl.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 1997-2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* The enclosed is a private interface between system libraries and
* the kernel. It should not be used in any other way. It may be
* changed without notice in a minor release of Solaris.
*/
#ifndef _SYS_SCHEDCTL_H
#define _SYS_SCHEDCTL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(_ASM)
#include <sys/types.h>
#include <sys/processor.h>
#ifdef _KERNEL
#include <sys/mutex.h>
#include <sys/thread.h>
#include <sys/vnode.h>
#include <sys/cpuvar.h>
#include <sys/door.h>
#endif /* _KERNEL */
/*
* This "public" portion of the sc_shared data is used by libsched/libc.
*/
typedef struct sc_public {
volatile short sc_nopreempt;
volatile short sc_yield;
} sc_public_t;
/*
* The private portion of the sc_shared data is for
* use by user-level threading support code in libc.
*/
typedef struct sc_shared {
volatile ushort_t sc_state; /* current LWP state */
volatile char sc_sigblock; /* all signals blocked */
volatile char sc_park; /* calling lwp_park() */
volatile processorid_t sc_cpu; /* last CPU on which LWP ran */
int sc_pad;
sc_public_t sc_preemptctl; /* preemption control data */
} sc_shared_t;
/*
* Possible state settings. These are same as the kernel thread states
* except there is no zombie state.
*/
#define SC_FREE 0x00
#define SC_SLEEP 0x01
#define SC_RUN 0x02
#define SC_ONPROC 0x04
#define SC_STOPPED 0x10
/* preemption control settings */
#define SC_MAX_TICKS 2 /* max time preemption can be blocked */
#ifdef _KERNEL
caddr_t schedctl(void);
void schedctl_init(void);
void schedctl_lwp_cleanup(kthread_t *);
void schedctl_proc_cleanup(void);
int schedctl_get_nopreempt(kthread_t *);
void schedctl_set_nopreempt(kthread_t *, short);
void schedctl_set_yield(kthread_t *, short);
int schedctl_sigblock(kthread_t *);
void schedctl_finish_sigblock(kthread_t *);
int schedctl_is_park(void);
void schedctl_unpark(void);
#endif /* _KERNEL */
#endif /* !defined(_ASM) */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SCHEDCTL_H */