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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 2012 by Delphix. All rights reserved. 28 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 29 * Copyright 2017 RackTop Systems. 30 */ 31 32 /* 33 * condvar.h: 34 * 35 * definitions for thread synchronization primitives: condition variables 36 * This is the public part of the interface to condition variables. The 37 * private (implementation-specific) part is in <arch>/sys/condvar_impl.h. 38 */ 39 40 #ifndef _SYS_CONDVAR_H 41 #define _SYS_CONDVAR_H 42 43 #include <sys/types.h> 44 #include <sys/time.h> 45 #include <sys/mutex.h> 46 #include <sys/synch.h> /* lwp_cond_t */ 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 /* 53 * Condtion variables. 54 */ 55 56 typedef lwp_cond_t kcondvar_t; 57 58 typedef enum { 59 CV_DEFAULT, 60 CV_DRIVER 61 } kcv_type_t; 62 63 64 /* 65 * Time resolution values used in cv_reltimedwait() and cv_reltimedwait_sig() 66 * to specify how accurately a relative timeout must expire - if it can be 67 * anticipated or deferred. 68 */ 69 typedef enum { 70 TR_NANOSEC, 71 TR_MICROSEC, 72 TR_MILLISEC, 73 TR_SEC, 74 TR_CLOCK_TICK, 75 TR_COUNT 76 } time_res_t; 77 78 extern time_res_t time_res[]; 79 80 #define TIME_RES_VALID(tr) (tr >= TR_NANOSEC && tr < TR_COUNT) 81 82 #define CALLOUT_FLAG_ABSOLUTE 0x2 83 84 /* 85 * condition variable function prototypes 86 */ 87 88 extern void cv_init(kcondvar_t *, char *, kcv_type_t, void *); 89 extern void cv_destroy(kcondvar_t *); 90 extern void cv_wait(kcondvar_t *, kmutex_t *); 91 extern void cv_wait_stop(kcondvar_t *, kmutex_t *, int); 92 extern clock_t cv_timedwait(kcondvar_t *, kmutex_t *, clock_t); 93 extern clock_t cv_timedwait_hires(kcondvar_t *, kmutex_t *, hrtime_t, hrtime_t, 94 int); 95 extern clock_t cv_reltimedwait(kcondvar_t *, kmutex_t *, clock_t, time_res_t); 96 extern int cv_wait_sig(kcondvar_t *, kmutex_t *); 97 extern clock_t cv_timedwait_sig(kcondvar_t *, kmutex_t *, clock_t); 98 extern int cv_timedwait_sig_hrtime(kcondvar_t *, kmutex_t *, hrtime_t); 99 extern clock_t cv_reltimedwait_sig(kcondvar_t *, kmutex_t *, clock_t, 100 time_res_t); 101 extern int cv_wait_sig_swap(kcondvar_t *, kmutex_t *); 102 extern int cv_wait_sig_swap_core(kcondvar_t *, kmutex_t *, int *); 103 extern void cv_signal(kcondvar_t *); 104 extern void cv_broadcast(kcondvar_t *); 105 extern int cv_waituntil_sig(kcondvar_t *, kmutex_t *, timestruc_t *, int); 106 107 #ifdef __cplusplus 108 } 109 #endif 110 111 #endif /* _SYS_CONDVAR_H */ 112