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 (c) 1994, 2000 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "mhd_local.h" 30 31 /* 32 * manipulate conditional variables, handle errors 33 */ 34 void 35 mhd_cv_init( 36 cond_t *cvp 37 ) 38 { 39 if (cond_init(cvp, USYNC_THREAD, NULL) != 0) { 40 mhd_perror("cond_init"); 41 mhd_exit(1); 42 } 43 } 44 45 void 46 mhd_cv_destroy( 47 cond_t *cvp 48 ) 49 { 50 if (cond_destroy(cvp) != 0) { 51 mhd_perror("cond_destroy"); 52 mhd_exit(1); 53 } 54 } 55 56 void 57 mhd_cv_wait( 58 cond_t *cvp, 59 mutex_t *mp 60 ) 61 { 62 int err; 63 64 assert(MUTEX_HELD(mp)); 65 if (((err = cond_wait(cvp, mp)) != 0) && 66 (err != EINTR)) { 67 errno = err; 68 mhd_perror("cond_wait"); 69 mhd_exit(1); 70 } 71 } 72 73 void 74 mhd_cv_timedwait( 75 cond_t *cvp, 76 mutex_t *mp, 77 mhd_msec_t to 78 ) 79 { 80 struct itimerval new, old; 81 int err; 82 83 /* check lock */ 84 assert(MUTEX_HELD(mp)); 85 assert(to != 0); 86 87 /* set timer */ 88 new.it_interval.tv_sec = 0; 89 new.it_interval.tv_usec = 0; 90 new.it_value.tv_sec = to / 1000; 91 new.it_value.tv_usec = (to % 1000) * 1000; 92 if (setitimer(ITIMER_REAL, &new, &old) != 0) { 93 mhd_perror("cond_wait"); 94 mhd_exit(1); 95 } 96 97 /* wait for condition or timeout */ 98 if (((err = cond_wait(cvp, mp)) != 0) && 99 (err != EINTR)) { 100 errno = err; 101 mhd_perror("cond_wait"); 102 mhd_exit(1); 103 } 104 105 /* reset timer */ 106 if (err != EINTR) { 107 new.it_interval.tv_sec = 0; 108 new.it_interval.tv_usec = 0; 109 new.it_value.tv_sec = 0; 110 new.it_value.tv_usec = 0; 111 if (setitimer(ITIMER_REAL, &new, &old) != 0) { 112 mhd_perror("cond_wait"); 113 mhd_exit(1); 114 } 115 } 116 } 117 118 void 119 mhd_cv_broadcast( 120 cond_t *cvp 121 ) 122 { 123 if (cond_broadcast(cvp) != 0) { 124 mhd_perror("cond_broadcast"); 125 mhd_exit(1); 126 } 127 } 128 129 /* 130 * manipulate mutexs, handle errors 131 */ 132 void 133 mhd_mx_init( 134 mutex_t *mp 135 ) 136 { 137 if (mutex_init(mp, USYNC_THREAD, NULL) != 0) { 138 mhd_perror("mutex_init"); 139 mhd_exit(1); 140 } 141 } 142 143 void 144 mhd_mx_destroy( 145 mutex_t *mp 146 ) 147 { 148 if (mutex_destroy(mp) != 0) { 149 mhd_perror("mutex_destroy"); 150 mhd_exit(1); 151 } 152 } 153 154 void 155 mhd_mx_lock( 156 mutex_t *mp 157 ) 158 { 159 if (mutex_lock(mp) != 0) { 160 mhd_perror("mutex_lock"); 161 mhd_exit(1); 162 } 163 } 164 165 void 166 mhd_mx_unlock( 167 mutex_t *mp 168 ) 169 { 170 assert(MUTEX_HELD(mp)); 171 if (mutex_unlock(mp) != 0) { 172 mhd_perror("mutex_unlock"); 173 mhd_exit(1); 174 } 175 } 176 177 /* 178 * manipulate rwlockss, handle errors 179 */ 180 void 181 mhd_rw_rdlock( 182 rwlock_t *rwlp 183 ) 184 { 185 if (rw_rdlock(rwlp) != 0) { 186 mhd_perror("rw_rdlock"); 187 mhd_exit(1); 188 } 189 } 190 191 void 192 mhd_rw_wrlock( 193 rwlock_t *rwlp 194 ) 195 { 196 if (rw_wrlock(rwlp) != 0) { 197 mhd_perror("rw_wrlock"); 198 mhd_exit(1); 199 } 200 } 201 202 void 203 mhd_rw_unlock( 204 rwlock_t *rwlp 205 ) 206 { 207 if (rw_unlock(rwlp) != 0) { 208 mhd_perror("rw_unlock"); 209 mhd_exit(1); 210 } 211 } 212