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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 /*
     28  * condvar.h:
     29  *
     30  * definitions for thread synchronization primitives: condition variables
     31  * This is the public part of the interface to condition variables. The
     32  * private (implementation-specific) part is in <arch>/sys/condvar_impl.h.
     33  */
     34 
     35 #ifndef _SYS_CONDVAR_H
     36 #define	_SYS_CONDVAR_H
     37 
     38 #pragma ident	"@(#)condvar.h	1.17	07/04/26 SMI"
     39 
     40 #ifndef	_ASM
     41 #include <sys/types.h>
     42 #include <sys/time.h>
     43 #ifdef _KERNEL
     44 #include <sys/mutex.h>
     45 #endif	/* _KERNEL */
     46 #endif	/* _ASM */
     47 
     48 #ifdef	__cplusplus
     49 extern "C" {
     50 #endif
     51 
     52 #ifndef	_ASM
     53 
     54 /*
     55  * Condtion variables.
     56  */
     57 
     58 typedef struct _kcondvar {
     59 	ushort_t	_opaque;
     60 } kcondvar_t;
     61 
     62 typedef	enum {
     63 	CV_DEFAULT,
     64 	CV_DRIVER
     65 } kcv_type_t;
     66 
     67 
     68 #if defined(_KERNEL)
     69 
     70 /*
     71  * condition variable function prototypes
     72  */
     73 
     74 extern	void	cv_init(kcondvar_t *, char *, kcv_type_t, void *);
     75 extern  void	cv_destroy(kcondvar_t *);
     76 extern	void	cv_wait(kcondvar_t *, kmutex_t *);
     77 extern	void	cv_wait_stop(kcondvar_t *, kmutex_t *, int);
     78 extern	clock_t	cv_timedwait(kcondvar_t *, kmutex_t *, clock_t);
     79 extern	int	cv_wait_sig(kcondvar_t *, kmutex_t *);
     80 extern	clock_t	cv_timedwait_sig(kcondvar_t *, kmutex_t *, clock_t);
     81 extern	int	cv_wait_sig_swap(kcondvar_t *, kmutex_t *);
     82 extern	int	cv_wait_sig_swap_core(kcondvar_t *, kmutex_t *, int *);
     83 extern	void	cv_signal(kcondvar_t *);
     84 extern	void	cv_broadcast(kcondvar_t *);
     85 extern	int	cv_waituntil_sig(kcondvar_t *, kmutex_t *, timestruc_t *, int);
     86 
     87 #endif	/* defined(_KERNEL) */
     88 
     89 #endif	/* _ASM */
     90 
     91 #ifdef	__cplusplus
     92 }
     93 #endif
     94 
     95 #endif	/* _SYS_CONDVAR_H */
     96