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 */ 28 29 #include "namespace.h" 30 #include <errno.h> 31 #include <stdlib.h> 32 #include <pthread.h> 33 #include "un-namespace.h" 34 35 #include "thr_private.h" 36 37 int 38 _pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr) 39 { 40 pthread_rwlockattr_t prwlockattr; 41 42 if (rwlockattr == NULL) 43 return (EINVAL); 44 prwlockattr = *rwlockattr; 45 if (prwlockattr == NULL) 46 return (EINVAL); 47 __free(prwlockattr); 48 return (0); 49 } 50 51 int 52 _pthread_rwlockattr_getpshared( 53 const pthread_rwlockattr_t * __restrict rwlockattr, 54 int * __restrict pshared) 55 { 56 *pshared = (*rwlockattr)->pshared; 57 return (0); 58 } 59 60 int 61 _pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr) 62 { 63 pthread_rwlockattr_t prwlockattr; 64 65 if (rwlockattr == NULL) 66 return (EINVAL); 67 68 prwlockattr = __malloc(sizeof(struct pthread_rwlockattr)); 69 if (prwlockattr == NULL) 70 return (ENOMEM); 71 72 prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE; 73 *rwlockattr = prwlockattr; 74 return (0); 75 } 76 77 int 78 _pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared) 79 { 80 /* Only PTHREAD_PROCESS_PRIVATE is supported. */ 81 if (pshared != PTHREAD_PROCESS_PRIVATE) 82 return (EINVAL); 83 (*rwlockattr)->pshared = pshared; 84 return (0); 85 } 86 87 __strong_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy); 88 __strong_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared); 89 __strong_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init); 90 __strong_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared); 91