t_lock.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 (c) 1991-1998 by Sun Microsystems, Inc.
* All rights reserved.
*/
/*
* t_lock.h: Prototypes for disp_locks, plus include files
* that describe the interfaces to kernel synch.
* objects.
*/
#ifndef _SYS_T_LOCK_H
#define _SYS_T_LOCK_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifndef _ASM
#include <sys/machlock.h>
#include <sys/param.h>
#include <sys/mutex.h>
#include <sys/rwlock.h>
#include <sys/semaphore.h>
#include <sys/condvar.h>
#endif /* _ASM */
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASM
/*
* Mutual exclusion locks described in common/sys/mutex.h.
*
* Semaphores described in common/sys/semaphore.h.
*
* Readers/Writer locks described in common/sys/rwlock.h.
*
* Condition variables described in common/sys/condvar.h
*/
#if defined(_KERNEL)
extern int ncpus;
/*
* Dispatcher lock type, macros and routines.
*
* disp_lock_t is defined in machlock.h
*/
extern void disp_lock_enter(disp_lock_t *);
extern void disp_lock_exit(disp_lock_t *);
extern void disp_lock_exit_nopreempt(disp_lock_t *);
extern void disp_lock_enter_high(disp_lock_t *);
extern void disp_lock_exit_high(disp_lock_t *);
extern void disp_lock_init(disp_lock_t *lp, char *name);
extern void disp_lock_destroy(disp_lock_t *lp);
#define DISP_LOCK_INIT(lp) LOCK_INIT_CLEAR((lock_t *)(lp))
#define DISP_LOCK_HELD(lp) LOCK_HELD((lock_t *)(lp))
#define DISP_LOCK_DESTROY(lp) ASSERT(!DISP_LOCK_HELD(lp))
/*
* The following definitions are for assertions which can be checked
* statically by tools like lock_lint. You can also define your own
* run-time test for each. If you don't, we define them to 1 so that
* such assertions simply pass.
*/
#ifndef NO_LOCKS_HELD
#define NO_LOCKS_HELD 1
#endif
#ifndef NO_COMPETING_THREADS
#define NO_COMPETING_THREADS 1
#endif
#endif /* defined(_KERNEL) */
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_T_LOCK_H */