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 1.6 2006/04/06 13:03:09 davidxu Exp $ 33 */ 34 35 #include "namespace.h" 36 #include <errno.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <pthread.h> 40 #include "un-namespace.h" 41 42 #include "thr_private.h" 43 44 /* Default condition variable attributes. */ 45 struct pthread_cond_attr _pthread_condattr_default = { 46 .c_pshared = PTHREAD_PROCESS_PRIVATE, 47 .c_clockid = CLOCK_REALTIME 48 }; 49 50 int 51 _pthread_condattr_init(pthread_condattr_t *attr) 52 { 53 pthread_condattr_t pattr; 54 int ret; 55 56 if ((pattr = (pthread_condattr_t) 57 malloc(sizeof(struct pthread_cond_attr))) == NULL) { 58 ret = ENOMEM; 59 } else { 60 memcpy(pattr, &_pthread_condattr_default, 61 sizeof(struct pthread_cond_attr)); 62 *attr = pattr; 63 ret = 0; 64 } 65 return (ret); 66 } 67 68 int 69 _pthread_condattr_destroy(pthread_condattr_t *attr) 70 { 71 int ret; 72 73 if (attr == NULL || *attr == NULL) { 74 ret = EINVAL; 75 } else { 76 free(*attr); 77 *attr = NULL; 78 ret = 0; 79 } 80 return(ret); 81 } 82 83 int 84 _pthread_condattr_getclock(const pthread_condattr_t *attr, 85 clockid_t *clock_id) 86 { 87 if (attr == NULL || *attr == NULL) 88 return (EINVAL); 89 *clock_id = (*attr)->c_clockid; 90 return (0); 91 } 92 93 int 94 _pthread_condattr_setclock(pthread_condattr_t *attr, 95 clockid_t clock_id) 96 { 97 if (attr == NULL || *attr == NULL) 98 return (EINVAL); 99 if (clock_id != CLOCK_REALTIME || 100 clock_id != CLOCK_MONOTONIC) 101 return (EINVAL); 102 (*attr)->c_clockid = clock_id; 103 return (0); 104 } 105 106 int 107 _pthread_condattr_getpshared(const pthread_condattr_t *attr, 108 int *pshared) 109 { 110 if (attr == NULL || *attr == NULL) 111 return (EINVAL); 112 113 *pshared = PTHREAD_PROCESS_PRIVATE; 114 return (0); 115 } 116 117 int 118 _pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared) 119 { 120 if (attr == NULL || *attr == NULL) 121 return (EINVAL); 122 123 if (pshared != PTHREAD_PROCESS_PRIVATE) 124 return (EINVAL); 125 return (0); 126 } 127 128 __strong_reference(_pthread_condattr_init, pthread_condattr_init); 129 __strong_reference(_pthread_condattr_destroy, pthread_condattr_destroy); 130 __strong_reference(_pthread_condattr_getclock, pthread_condattr_getclock); 131 __strong_reference(_pthread_condattr_setclock, pthread_condattr_setclock); 132 __strong_reference(_pthread_condattr_getpshared, pthread_condattr_getpshared); 133 __strong_reference(_pthread_condattr_setpshared, pthread_condattr_setpshared); 134 135