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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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2012 by Delphix. All rights reserved.
*/
/*
* condvar.h:
*
* definitions for thread synchronization primitives: condition variables
* This is the public part of the interface to condition variables. The
* private (implementation-specific) part is in <arch>/sys/condvar_impl.h.
*/
#ifndef _SYS_CONDVAR_H
#define _SYS_CONDVAR_H
#ifndef _ASM
#include <sys/types.h>
#include <sys/time.h>
#ifdef _KERNEL
#include <sys/mutex.h>
#endif /* _KERNEL */
#endif /* _ASM */
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASM
/*
* Condtion variables.
*/
typedef struct _kcondvar {
ushort_t _opaque;
} kcondvar_t;
typedef enum {
CV_DEFAULT,
CV_DRIVER
} kcv_type_t;
#if defined(_KERNEL)
/*
* Time resolution values used in cv_reltimedwait() and cv_reltimedwait_sig()
* to specify how accurately a relative timeout must expire - if it can be
* anticipated or deferred.
*/
typedef enum {
TR_NANOSEC,
TR_MICROSEC,
TR_MILLISEC,
TR_SEC,
TR_CLOCK_TICK,
TR_COUNT
} time_res_t;
extern time_res_t time_res[];
#define TIME_RES_VALID(tr) (tr >= TR_NANOSEC && tr < TR_COUNT)
/*
* condition variable function prototypes
*/
extern void cv_init(kcondvar_t *, char *, kcv_type_t, void *);
extern void cv_destroy(kcondvar_t *);
extern void cv_wait(kcondvar_t *, kmutex_t *);
extern void cv_wait_stop(kcondvar_t *, kmutex_t *, int);
extern clock_t cv_timedwait(kcondvar_t *, kmutex_t *, clock_t);
extern clock_t cv_timedwait_hires(kcondvar_t *, kmutex_t *, hrtime_t, hrtime_t,
int);
extern clock_t cv_reltimedwait(kcondvar_t *, kmutex_t *, clock_t, time_res_t);
extern int cv_wait_sig(kcondvar_t *, kmutex_t *);
extern clock_t cv_timedwait_sig(kcondvar_t *, kmutex_t *, clock_t);
extern int cv_timedwait_sig_hrtime(kcondvar_t *, kmutex_t *, hrtime_t);
extern clock_t cv_reltimedwait_sig(kcondvar_t *, kmutex_t *, clock_t,
time_res_t);
extern int cv_wait_sig_swap(kcondvar_t *, kmutex_t *);
extern int cv_wait_sig_swap_core(kcondvar_t *, kmutex_t *, int *);
extern void cv_signal(kcondvar_t *);
extern void cv_broadcast(kcondvar_t *);
extern int cv_waituntil_sig(kcondvar_t *, kmutex_t *, timestruc_t *, int);
#endif /* defined(_KERNEL) */
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_CONDVAR_H */
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