1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 1994, 2000 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include "med_local.h"
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #ifdef _REENTRANT
32*0Sstevel@tonic-gate /*
33*0Sstevel@tonic-gate * manipulate conditional variables, handle errors
34*0Sstevel@tonic-gate */
35*0Sstevel@tonic-gate void
med_cv_init(cond_t * cvp)36*0Sstevel@tonic-gate med_cv_init(
37*0Sstevel@tonic-gate cond_t *cvp
38*0Sstevel@tonic-gate )
39*0Sstevel@tonic-gate {
40*0Sstevel@tonic-gate if (cond_init(cvp, USYNC_THREAD, NULL) != 0) {
41*0Sstevel@tonic-gate med_perror("cond_init");
42*0Sstevel@tonic-gate med_exit(1);
43*0Sstevel@tonic-gate }
44*0Sstevel@tonic-gate }
45*0Sstevel@tonic-gate
46*0Sstevel@tonic-gate void
med_cv_destroy(cond_t * cvp)47*0Sstevel@tonic-gate med_cv_destroy(
48*0Sstevel@tonic-gate cond_t *cvp
49*0Sstevel@tonic-gate )
50*0Sstevel@tonic-gate {
51*0Sstevel@tonic-gate if (cond_destroy(cvp) != 0) {
52*0Sstevel@tonic-gate med_perror("cond_destroy");
53*0Sstevel@tonic-gate med_exit(1);
54*0Sstevel@tonic-gate }
55*0Sstevel@tonic-gate }
56*0Sstevel@tonic-gate
57*0Sstevel@tonic-gate void
med_cv_wait(cond_t * cvp,mutex_t * mp)58*0Sstevel@tonic-gate med_cv_wait(
59*0Sstevel@tonic-gate cond_t *cvp,
60*0Sstevel@tonic-gate mutex_t *mp
61*0Sstevel@tonic-gate )
62*0Sstevel@tonic-gate {
63*0Sstevel@tonic-gate int err;
64*0Sstevel@tonic-gate
65*0Sstevel@tonic-gate assert(MUTEX_HELD(mp));
66*0Sstevel@tonic-gate if (((err = cond_wait(cvp, mp)) != 0) &&
67*0Sstevel@tonic-gate (err != EINTR)) {
68*0Sstevel@tonic-gate errno = err;
69*0Sstevel@tonic-gate med_perror("cond_wait");
70*0Sstevel@tonic-gate med_exit(1);
71*0Sstevel@tonic-gate }
72*0Sstevel@tonic-gate }
73*0Sstevel@tonic-gate
74*0Sstevel@tonic-gate void
med_cv_timedwait(cond_t * cvp,mutex_t * mp,med_msec_t to)75*0Sstevel@tonic-gate med_cv_timedwait(
76*0Sstevel@tonic-gate cond_t *cvp,
77*0Sstevel@tonic-gate mutex_t *mp,
78*0Sstevel@tonic-gate med_msec_t to
79*0Sstevel@tonic-gate )
80*0Sstevel@tonic-gate {
81*0Sstevel@tonic-gate struct itimerval new, old;
82*0Sstevel@tonic-gate int err;
83*0Sstevel@tonic-gate
84*0Sstevel@tonic-gate /* check lock */
85*0Sstevel@tonic-gate assert(MUTEX_HELD(mp));
86*0Sstevel@tonic-gate assert(to != 0);
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate /* set timer */
89*0Sstevel@tonic-gate new.it_interval.tv_sec = 0;
90*0Sstevel@tonic-gate new.it_interval.tv_usec = 0;
91*0Sstevel@tonic-gate new.it_value.tv_sec = to / 1000;
92*0Sstevel@tonic-gate new.it_value.tv_usec = (to % 1000) * 1000;
93*0Sstevel@tonic-gate if (setitimer(ITIMER_REAL, &new, &old) != 0) {
94*0Sstevel@tonic-gate med_perror("cond_wait");
95*0Sstevel@tonic-gate med_exit(1);
96*0Sstevel@tonic-gate }
97*0Sstevel@tonic-gate
98*0Sstevel@tonic-gate /* wait for condition or timeout */
99*0Sstevel@tonic-gate if (((err = cond_wait(cvp, mp)) != 0) &&
100*0Sstevel@tonic-gate (err != EINTR)) {
101*0Sstevel@tonic-gate errno = err;
102*0Sstevel@tonic-gate med_perror("cond_wait");
103*0Sstevel@tonic-gate med_exit(1);
104*0Sstevel@tonic-gate }
105*0Sstevel@tonic-gate
106*0Sstevel@tonic-gate /* reset timer */
107*0Sstevel@tonic-gate if (err != EINTR) {
108*0Sstevel@tonic-gate new.it_interval.tv_sec = 0;
109*0Sstevel@tonic-gate new.it_interval.tv_usec = 0;
110*0Sstevel@tonic-gate new.it_value.tv_sec = 0;
111*0Sstevel@tonic-gate new.it_value.tv_usec = 0;
112*0Sstevel@tonic-gate if (setitimer(ITIMER_REAL, &new, &old) != 0) {
113*0Sstevel@tonic-gate med_perror("cond_wait");
114*0Sstevel@tonic-gate med_exit(1);
115*0Sstevel@tonic-gate }
116*0Sstevel@tonic-gate }
117*0Sstevel@tonic-gate }
118*0Sstevel@tonic-gate
119*0Sstevel@tonic-gate void
med_cv_broadcast(cond_t * cvp)120*0Sstevel@tonic-gate med_cv_broadcast(
121*0Sstevel@tonic-gate cond_t *cvp
122*0Sstevel@tonic-gate )
123*0Sstevel@tonic-gate {
124*0Sstevel@tonic-gate if (cond_broadcast(cvp) != 0) {
125*0Sstevel@tonic-gate med_perror("cond_broadcast");
126*0Sstevel@tonic-gate med_exit(1);
127*0Sstevel@tonic-gate }
128*0Sstevel@tonic-gate }
129*0Sstevel@tonic-gate
130*0Sstevel@tonic-gate /*
131*0Sstevel@tonic-gate * manipulate mutexs, handle errors
132*0Sstevel@tonic-gate */
133*0Sstevel@tonic-gate void
med_mx_init(mutex_t * mp)134*0Sstevel@tonic-gate med_mx_init(
135*0Sstevel@tonic-gate mutex_t *mp
136*0Sstevel@tonic-gate )
137*0Sstevel@tonic-gate {
138*0Sstevel@tonic-gate if (mutex_init(mp, USYNC_THREAD, NULL) != 0) {
139*0Sstevel@tonic-gate med_perror("mutex_init");
140*0Sstevel@tonic-gate med_exit(1);
141*0Sstevel@tonic-gate }
142*0Sstevel@tonic-gate }
143*0Sstevel@tonic-gate
144*0Sstevel@tonic-gate void
med_mx_destroy(mutex_t * mp)145*0Sstevel@tonic-gate med_mx_destroy(
146*0Sstevel@tonic-gate mutex_t *mp
147*0Sstevel@tonic-gate )
148*0Sstevel@tonic-gate {
149*0Sstevel@tonic-gate if (mutex_destroy(mp) != 0) {
150*0Sstevel@tonic-gate med_perror("mutex_destroy");
151*0Sstevel@tonic-gate med_exit(1);
152*0Sstevel@tonic-gate }
153*0Sstevel@tonic-gate }
154*0Sstevel@tonic-gate
155*0Sstevel@tonic-gate void
med_mx_lock(mutex_t * mp)156*0Sstevel@tonic-gate med_mx_lock(
157*0Sstevel@tonic-gate mutex_t *mp
158*0Sstevel@tonic-gate )
159*0Sstevel@tonic-gate {
160*0Sstevel@tonic-gate if (mutex_lock(mp) != 0) {
161*0Sstevel@tonic-gate med_perror("mutex_lock");
162*0Sstevel@tonic-gate med_exit(1);
163*0Sstevel@tonic-gate }
164*0Sstevel@tonic-gate }
165*0Sstevel@tonic-gate
166*0Sstevel@tonic-gate void
med_mx_unlock(mutex_t * mp)167*0Sstevel@tonic-gate med_mx_unlock(
168*0Sstevel@tonic-gate mutex_t *mp
169*0Sstevel@tonic-gate )
170*0Sstevel@tonic-gate {
171*0Sstevel@tonic-gate assert(MUTEX_HELD(mp));
172*0Sstevel@tonic-gate if (mutex_unlock(mp) != 0) {
173*0Sstevel@tonic-gate med_perror("mutex_unlock");
174*0Sstevel@tonic-gate med_exit(1);
175*0Sstevel@tonic-gate }
176*0Sstevel@tonic-gate }
177*0Sstevel@tonic-gate
178*0Sstevel@tonic-gate /*
179*0Sstevel@tonic-gate * manipulate rwlockss, handle errors
180*0Sstevel@tonic-gate */
181*0Sstevel@tonic-gate void
med_rw_rdlock(rwlock_t * rwlp)182*0Sstevel@tonic-gate med_rw_rdlock(
183*0Sstevel@tonic-gate rwlock_t *rwlp
184*0Sstevel@tonic-gate )
185*0Sstevel@tonic-gate {
186*0Sstevel@tonic-gate if (rw_rdlock(rwlp) != 0) {
187*0Sstevel@tonic-gate med_perror("rw_rdlock");
188*0Sstevel@tonic-gate med_exit(1);
189*0Sstevel@tonic-gate }
190*0Sstevel@tonic-gate }
191*0Sstevel@tonic-gate
192*0Sstevel@tonic-gate void
med_rw_wrlock(rwlock_t * rwlp)193*0Sstevel@tonic-gate med_rw_wrlock(
194*0Sstevel@tonic-gate rwlock_t *rwlp
195*0Sstevel@tonic-gate )
196*0Sstevel@tonic-gate {
197*0Sstevel@tonic-gate if (rw_wrlock(rwlp) != 0) {
198*0Sstevel@tonic-gate med_perror("rw_wrlock");
199*0Sstevel@tonic-gate med_exit(1);
200*0Sstevel@tonic-gate }
201*0Sstevel@tonic-gate }
202*0Sstevel@tonic-gate
203*0Sstevel@tonic-gate void
med_rw_unlock(rwlock_t * rwlp)204*0Sstevel@tonic-gate med_rw_unlock(
205*0Sstevel@tonic-gate rwlock_t *rwlp
206*0Sstevel@tonic-gate )
207*0Sstevel@tonic-gate {
208*0Sstevel@tonic-gate if (rw_unlock(rwlp) != 0) {
209*0Sstevel@tonic-gate med_perror("rw_unlock");
210*0Sstevel@tonic-gate med_exit(1);
211*0Sstevel@tonic-gate }
212*0Sstevel@tonic-gate }
213*0Sstevel@tonic-gate #endif /* _REENTRANT */
214