1 /* 2 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by John Birrell. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $DragonFly: src/lib/libthread_xu/thread/thr_condattr.c,v 1.3 2005/03/15 12:01:51 davidxu Exp $ 33 */ 34 #include <stdlib.h> 35 #include <string.h> 36 #include <errno.h> 37 #include <pthread.h> 38 #include "thr_private.h" 39 40 __weak_reference(_pthread_condattr_init, pthread_condattr_init); 41 __weak_reference(_pthread_condattr_destroy, pthread_condattr_destroy); 42 __weak_reference(_pthread_condattr_getclock, pthread_condattr_getclock); 43 __weak_reference(_pthread_condattr_setclock, pthread_condattr_setclock); 44 __weak_reference(_pthread_condattr_getpshared, pthread_condattr_getpshared); 45 __weak_reference(_pthread_condattr_setpshared, pthread_condattr_setpshared); 46 47 int 48 _pthread_condattr_init(pthread_condattr_t *attr) 49 { 50 pthread_condattr_t pattr; 51 int ret; 52 53 if ((pattr = (pthread_condattr_t) 54 malloc(sizeof(struct pthread_cond_attr))) == NULL) { 55 ret = ENOMEM; 56 } else { 57 memcpy(pattr, &_pthread_condattr_default, 58 sizeof(struct pthread_cond_attr)); 59 *attr = pattr; 60 ret = 0; 61 } 62 return (ret); 63 } 64 65 int 66 _pthread_condattr_destroy(pthread_condattr_t *attr) 67 { 68 int ret; 69 70 if (attr == NULL || *attr == NULL) { 71 ret = EINVAL; 72 } else { 73 free(*attr); 74 *attr = NULL; 75 ret = 0; 76 } 77 return(ret); 78 } 79 80 int 81 _pthread_condattr_getclock(const pthread_condattr_t *attr, 82 clockid_t *clock_id) 83 { 84 if (attr == NULL || *attr == NULL) 85 return (EINVAL); 86 *clock_id = (*attr)->c_clockid; 87 return (0); 88 } 89 90 int 91 _pthread_condattr_setclock(pthread_condattr_t *attr, 92 clockid_t clock_id) 93 { 94 if (attr == NULL || *attr == NULL) 95 return (EINVAL); 96 if (clock_id != CLOCK_REALTIME || 97 clock_id != CLOCK_MONOTONIC) 98 return (EINVAL); 99 (*attr)->c_clockid = clock_id; 100 return (0); 101 } 102 103 int 104 _pthread_condattr_getpshared(const pthread_condattr_t *attr, 105 int *pshared) 106 { 107 if (attr == NULL || *attr == NULL) 108 return (EINVAL); 109 110 pshared = PTHREAD_PROCESS_PRIVATE; 111 return (0); 112 } 113 114 int 115 _pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared) 116 { 117 if (attr == NULL || *attr == NULL) 118 return (EINVAL); 119 120 if (pshared != PTHREAD_PROCESS_PRIVATE) 121 return (EINVAL); 122 return (0); 123 } 124