1/* 2 * pthread_rwlockattr_init.c 3 * 4 * Description: 5 * This translation unit implements read/write lock primitives. 6 * 7 * -------------------------------------------------------------------------- 8 * 9 * Pthreads-win32 - POSIX Threads Library for Win32 10 * Copyright(C) 1998 John E. Bossom 11 * Copyright(C) 1999,2005 Pthreads-win32 contributors 12 * 13 * Contact Email: rpj@callisto.canberra.edu.au 14 * 15 * The current list of contributors is contained 16 * in the file CONTRIBUTORS included with the source 17 * code distribution. The list can also be seen at the 18 * following World Wide Web location: 19 * http://sources.redhat.com/pthreads-win32/contributors.html 20 * 21 * This library is free software; you can redistribute it and/or 22 * modify it under the terms of the GNU Lesser General Public 23 * License as published by the Free Software Foundation; either 24 * version 2 of the License, or (at your option) any later version. 25 * 26 * This library is distributed in the hope that it will be useful, 27 * but WITHOUT ANY WARRANTY; without even the implied warranty of 28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 29 * Lesser General Public License for more details. 30 * 31 * You should have received a copy of the GNU Lesser General Public 32 * License along with this library in the file COPYING.LIB; 33 * if not, write to the Free Software Foundation, Inc., 34 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 35 */ 36 37#include <limits.h> 38 39#include "pthread.h" 40#include "implement.h" 41 42int 43pthread_rwlockattr_init (pthread_rwlockattr_t * attr) 44 /* 45 * ------------------------------------------------------ 46 * DOCPUBLIC 47 * Initializes a rwlock attributes object with default 48 * attributes. 49 * 50 * PARAMETERS 51 * attr 52 * pointer to an instance of pthread_rwlockattr_t 53 * 54 * 55 * DESCRIPTION 56 * Initializes a rwlock attributes object with default 57 * attributes. 58 * 59 * RESULTS 60 * 0 successfully initialized attr, 61 * ENOMEM insufficient memory for attr. 62 * 63 * ------------------------------------------------------ 64 */ 65{ 66 int result = 0; 67 pthread_rwlockattr_t rwa; 68 69 rwa = (pthread_rwlockattr_t) calloc (1, sizeof (*rwa)); 70 71 if (rwa == NULL) 72 { 73 result = ENOMEM; 74 } 75 else 76 { 77 rwa->pshared = PTHREAD_PROCESS_PRIVATE; 78 } 79 80 *attr = rwa; 81 82 return (result); 83} /* pthread_rwlockattr_init */ 84