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