1 /*- 2 * Copyright (c) 1998 Alex Nash 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/lib/libpthread/thread/thr_rwlockattr.c,v 1.8 2002/09/16 08:45:35 mini Exp $ 27 * $DragonFly: src/lib/libthread_xu/thread/thr_rwlockattr.c,v 1.3 2006/04/06 13:03:09 davidxu Exp $ 28 */ 29 30 #include "namespace.h" 31 #include <errno.h> 32 #include <stdlib.h> 33 34 #include <pthread.h> 35 #include "un-namespace.h" 36 37 #include "thr_private.h" 38 39 int 40 _pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr) 41 { 42 pthread_rwlockattr_t prwlockattr; 43 44 if (rwlockattr == NULL) 45 return(EINVAL); 46 47 prwlockattr = *rwlockattr; 48 49 if (prwlockattr == NULL) 50 return(EINVAL); 51 52 free(prwlockattr); 53 54 return(0); 55 } 56 57 int 58 _pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *rwlockattr, 59 int *pshared) 60 { 61 *pshared = (*rwlockattr)->pshared; 62 63 return(0); 64 } 65 66 int 67 _pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr) 68 { 69 pthread_rwlockattr_t prwlockattr; 70 71 if (rwlockattr == NULL) 72 return(EINVAL); 73 74 prwlockattr = (pthread_rwlockattr_t) 75 malloc(sizeof(struct pthread_rwlockattr)); 76 77 if (prwlockattr == NULL) 78 return(ENOMEM); 79 80 prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE; 81 *rwlockattr = prwlockattr; 82 83 return(0); 84 } 85 86 int 87 _pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared) 88 { 89 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 90 if (pshared != PTHREAD_PROCESS_PRIVATE) 91 return(EINVAL); 92 93 (*rwlockattr)->pshared = pshared; 94 95 return(0); 96 } 97 98 __strong_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy); 99 __strong_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared); 100 __strong_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init); 101 __strong_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared); 102 103